Latest Threads
Latest
Greatest Threads
Greatest
Lobby
Lobby
Journals
Journals
Search
Search
Options
Options
Help
Help
Login
Login
Home » Discuss » Journals » NNadir Donate to DU
Advertise Liberally! The Liberal Blog Advertising Network
Advertise on more than 70 progressive blogs!
NNadir's Journal
Posted by NNadir in Environment/Energy
Mon Feb 08th 2010, 08:44 PM
While the Montreal Protocol was a tremendous (and all too rare) successful instance of public policy actually following scientific consensus and addressing the emergency of ozone depletion, the dirty little secret of that success is that the materials which replaced ozone depleting CFC's (chlorofluorocarbons) are HFC's (hydrofluorocarbons) very potent and very persistent greenhouse gases in their own right.

Many of these gases leaking out of all those 2005 Prius's air conditioners - the Prius user who thinks he or she is saving the world representing in my mind a case something like an alcoholic announcing that he is now no longer an alcoholic because he has switched from drinking Scotch to drinking beer - will still be present in earth's atmosphere 50,000 years from now, something like 5 times the distance, in time, between the period before writing was invented and today.

In terms of persistence, CFC's are not quite as bad as HFC's, but of course, the mechanism for the decomposition of CFC's destroys stratospheric ozone, whereas HFC's generally do not. The solution was to make something that doesn't, effectively, decompose at all. (Actually HFC's do decompose under irradiation, but with hardly the same alacrity as HFC's; they have long half-lives. The decomposition product of HFC's is the very toxic compound HF gas - also decomposition product with CFC's - and various acid fluorides, including fluorophosgene. Happily the concentration in the atmosphere is never very high, because the slow rate of formation allows HF to be neutralized by glass and carbonates before it can cause much harm.)

The global warming potential of one widely used HFC 1,1,1,2, tetrafluorethane, R-134a, is about 1600 times as high as carbon dioxide. This is actually not quite as bad as R-12, which has a global warming potential of 6700, which is hopefully irrelevant owning to the Montreal Protocol banning it.

Any substance that has a half-life will, no matter how quickly it is formed, will come into equilibrium, at which time it will be destroyed at the same rate that it is created. The position of the equilibrium has to do with the rates of destruction and formation. Since R-134a has a low rate of decomposition, one can have higher concentrations of it in the atmosphere than one can have of R-12, which has a shorter half-life, if a more problematic decomposition route.

It would be nice therefore to have compounds with a short half life and a relatively benign mechanism of decomposition.

Actually it now understood that such compounds exist. They are the HFE's, hydrofluoroethers, which are pretty good refrigerants, are non-flammable, and decompose with a short half-life with a mechanism similar to that of HFC's, generating HF and fluorophosgene that can be neutralized by silica (glass) and carbonates before accumulating in toxic concentrations.

It might seem like a slam dunk, but, um, not so fast. Although HFE's are effective, they are not as efficient. To wit, it takes more energy to make them work than it takes with HFC's.

This is discussed in the ASAP section of the American Chemical Society Journal Environmental Science and Technology in a paper by Blowers and Landsbury out of the University of Arizona, where they should care about things like refrigerants.

Here is the abstract of the article, and a link for use of subscribers and people in good scientific libraries.

Here are some excerpts of the article from the text:

This paper quantifies the environmental impacts of refrigeration for R-12 (the CFC CCl2F2), which was used prior to the Montreal Protocol, R-134a (the HFC CH2FCF3 ), and an emerging HFE (CF3OCH3), which has properties appropriate for drop-in replacement from a temperature and vapor pressure perspective. A review of the literature shows only one other HFE (CF3OCHF2) with suitable properties for low temperature cooling applications, but calculations showed that the chemical is not feasible for technical reasons...

...A refrigeration system involves a circulating working fluid called a coolant that removes heat from the refrigerator at low temperatures, vaporizing the fluid and absorbing energy. The vapor stream enters a compressor where the gas is pressurized, increasing the temperature. A secondary fluid, commonly water or air, is used to remove the heat from the refrigerant to form a saturated liquid stream at high pressure. The pressure is lowered to utilize the Joule-Thomson effect through partial vaporization, which drops the temperature to the point where the fluid can again be passed through the refrigerator. The compressor requires energy, which leads to off-site carbon dioxide emissions due to energy creation.


The bold is mine.

Note that the Joule-Thompson coefficient of all real gases, with the exception of hydrogen, helium and neon is positive, meaning that all real gases except these are potentially used as refrigerants. Indeed, liquid nitrogen is often made using the auto-refrigeration of compressed air being allowed to expand.

The problem is that using nitrogen to refrigerate itself involves an energy penalty. If energy is cheap, liquid nitrogen is cheap. If energy is expensive, liquid nitrogen is expensive.

These thermodynamic facts - like all thermodynamic facts - translate into environmental effects, since energy and the environment are inextricably connected, which is why energy storage always involves an environmental penalty.

To continue with excepting the paper, they consider - unlike an anti-nuke daydreaming about putative "someday" solar and wind systems with brazillions of battery packs - where energy comes from:

A compressor efficiency of 75% was assumed. The implications of these decisions on the analysis analyses are explored later.We used standard chemical engineering equations and principles for calculating entropies,heat duties,work requirements,and Joule-Thomson cooling effects (11). Details are shown in the Supporting Information. Carbon dioxide emissions were estimated for both direct and indirect contributions. For direct GWP contributions, we assumed a refrigerant leakage rate of 9%/year (8). We selected coal as the fuel source to evaluate indirect contributions due to the rapid growth of coal as a primary fuel for electricity generation. Coal produces 39% of electricity in the U.S. and is the dominant source of electricity worldwide (12). It should be noted that there are a range of values available in the literature for the emissions factor for CO2 for electricity from coal. Schreiber, et al. (13), performed an LCA for coal-fired power plants in Germany and found CO2 emissions to be 0.796 kg/kWh when they considered impacts due to materials procurement, coal supply, combustion, and some post-combustion treatment. It is unclear how they handled details about transport as this was not discussed in their paper. Odeh and Cockerill examined coal combustion for UK coal-fired power plants, including coal mining, transport, and power generation in their analyses and found emissions to be 0.957 kg/kWh (13) or 0.984 kg/kWh (14). Similar values were reported by Spath (15) for U.S. coal-fired plants and Hondo (16) for Japanese plants, with values of 1.042 and 0.975 kg/kWh, respectively...


Note that coal use is likely to get worse not better although many attempts will be made to pretend otherwise, by building as a red herring one or two tiny coal gasification plants that could someday, possibly - if we really, really wanted to do it, even though we don't - be applied to sequestration, to distract attention from the huge new traditional coal plants. This is what I call the "Florida Power and Light Solution" which is marginally better than the German solution which is to announce that new coal plants don't count because they're, um, new. (It also helps to announce that you intend to use useless solar and wind power even as you build new coal and gas plants, another practice of the Germans who are in the process of replacing all of their nearly pollution free nuclear plants with "green" coal and gas plants.)

Now for the results of the paper:

The refrigerant GWPs suggest that switching to the HFE would be desirable to prevent global climate change through greenhouse gas emissions. However, our results in Table 2 show the drop-in replacement HFE for R-134a is unfavorable from an overall use-to-disposal life cycle perspective. Unfortunately, there is an increase of indirect emissions through both the increased compressor requirements and increased cooling water needs.The compressor significantly contributes to greenhouse gas emissions with between 69 and 72% of the electricity needs, which make up between 76 and 98% of the total CO2-equivalents. The primary reason that the HFE leads to larger compression needs is that the heat of vaporization of the HFE is the lowest among the refrigerants, resulting in the largest vaporization fraction across the valve due to the Joule-
Thomson effect. This leads to a larger required mass of refrigerant that must be transported throughout the refrigeration loop, which increases the overall work duty of the compressor. In fact, the work per mole is lower for the HFE but the need for higher flow rates to meet the cooling requirements leads to higher electricity usage.


The bold is, again, mine.

Note that HFE's become a reasonable and workable replacement for HFC's if and only if electricity is freely available without the generation of greenhouse gases.

This is entirely feasible with known technology, but regrettably, ignorance and mysticism prevent full application of the technology.
Read entry | Discuss (2 comments) | Recommend (+11 votes)
Posted by NNadir in Environment/Energy
Mon Feb 08th 2010, 03:19 PM
http://www.findingdulcinea.com/news/Americ...

Since the population of Harrisburg, PA is roughly 50,000, or would have been had the city not had every man, woman, child, hermaphodite, cat, dog and gold fish wiped out by the 1979 Three Mile Island accident, the automobile death toll is "only" roughly the equivalent of killing 60% of Harrisburg each year.

I, for one, am relieved, especially as so many anti-nukes here who worry incessantly about "dangerous nuclear power" are spending so much time talking about their theoretical solar powered and wind powered electrical cars which could work, although for as long as I've been here, 8 years, none of these optimistic predictions have panned out despite great enthusiasm and many thousands of energy consuming threads about them.

I'm sure that our saftey minded renewable car advocates can show readily that solar powered cars - should they exist someday - will be much safer than modern cars, which "only" killed 60% of a Harrisburg in 2008.

Driving a car of course is much safer than having a tritium atom decay every hour or so in some water in the Marianas trench.
Read entry | Discuss (7 comments) | Recommend (+4 votes)
Posted by NNadir in Environment/Energy
Sun Feb 07th 2010, 11:23 PM


The Impending Power Gap: Where Will Germany's Energy Come From ...


I thought wind and solar was going to supply 100% of Germany's energy, although I was sort of, kinda, in a way, after a fashion, maybe, remotely curious about why Gazprom was paying Gerhard Schroeder 300,000 euros per year to install gas lines to Russia, and why Nabucco was paying Joschka Fischer about the same amount to do the same thing.

I don't know who's going to cash in on the coal. Maybe Tritten can get on that one, by issuing a lot of platitudes about how Germany could build CGS plants by the 25th century or some other soothsaying.

Read entry | Discuss (30 comments) | Recommend (+8 votes)
Posted by NNadir in Environment/Energy
Sat Feb 06th 2010, 07:28 AM
This comes from the European Scientific Publication: Eur J Public Health JUEL et al. 10 (2): 93.

It's available on line for free: http://eurpub.oxfordjournals.org/cgi/repri...

The title of the article is:

Mortality and life expectancy in Denmark and in other European countries. What is happening to middle-aged Danes?.

Fifteen nations were studied over that period. (One nation included is one that began using so called "deadly nuclear power" almost exclusively in that period to generate its electricity, which is, of course, my point.)

Of the fifteen nations reported, the largest increase in life expectancy were reported in decending order: Portugal, Spain, France, Austria, and (then) West Germany. Life expectancy in these nations increase about 5 years over the period. French men actually increased their life expectancy more than Spanish men, 5 years compared to 4 years resepctively.

The nations the smallest increases were, from highest increase to lowest: Sweden, Greece, Norway, Netherlands, and, dead last, Denmark. The increase in Danish life expectancy over this roughly 20 year period was just one year.

In this period, the nation with the lowest mortality from lung cancer was, um France, with a mortality rate of 20 per 100,000. France was also in the lower tier for breast cancer.

France, despite all of its "deadly" nuclear power plants, according to the Wikipedia reference, which claims to be based on United Nations statistics, as the tenth best life expectancy in the world, 80.7 years. Japan, the best in the world, has a life expectancy of 82.6 years. Denmark ranks #31, and has a lower life expectancy than the EU overall. Denmark actually beats out the United States, #34, but that's not saying much. In the United States if you have no money, you have no health care.

Apparently the evil, nasty, "deadly scourge" of nuclear power cannot overwhelm the excellent French health care system, and maybe - it actually could be - air pollution is bad for you.

Nevertheless, as we all know, everyone in France will die.

Read entry | Discuss (5 comments) | Recommend (+3 votes)
Posted by NNadir in Environment/Energy
Sat Feb 06th 2010, 04:11 AM
http://www.energy.eu /

French Electricity (Domestic): 0,1319 Euros/kwh.

German Electricity (Domestic): 0,2125 Euros/kwh.

Danish Electricity (Domestic): 0,2671 Euros/kwh

French Electricity (Industrial): 00,0765 Euros/kwh.

German Electricity (Industrial): 0,1389 Euros/kwh.

Danish Electricity (Industrial): 0,1293 Euro/kwh.

Somebody call Joe Romm and ask him to explain the differences in these country's electricity rates.

I believe his claim is that "nuclear is too expensive," which belies the fact that France, the world's sixth largest economy, has as its 4th largest export, um, electricity.
Read entry | Discuss (3 comments) | Recommend (+3 votes)
Posted by NNadir in Environment/Energy
Tue Jan 26th 2010, 10:20 PM
Natural disasters are often described as “acts of God,” but within days of last May’s devastating earthquake in China’s Sichuan Province, seismologists in and out of China were quietly wondering whether humans might have had a hand in it. Now, the first researchers have gone public with evidence that stresses from water piled behind the new Zipingpu Dam may have triggered the failure of the nearby fault, a failure that went on to rupture almost 300 kilometers of fault and kill some 80,000 people. Still, no one is near to proving that the Wenchuan quake was a case of reservoir triggered seismicity. “There’s no question triggered earthquakes happen,” says seismologist Leonardo Seeber of the Lamont- Doherty Earth Observatory in Palisades, New York. That fact and the new evidence argue that the quake-dam connection “is worth pursuing further,” he says, but proving triggering “is not easy.”

And the Chinese government is tightly holding key data. Seismologists have been collecting examples of triggered seismicity for 40 years. “The surprising thing to me is that you need
very little mechanical disturbance to trigger an earthquake,” says Seeber. Removing fluid or rock from the crust, as in oil production or coal mining, could do it. So might injecting fluid to store wastes or sequester carbon dioxide, or adding the weight of 100 meters or so of water behind a dam...


Kerr and Stone, Science Vol 323, page 322, Jan 16, 2009.

The Zipingpu dam survived the earthquake, by the way. About half a million people live downstream from the dam. It is not clear that the dam would have survived Monsoon type levels in the reservoir, but the reservoir was only partially filled on the day of the quake. Engineers quickly drained the reservoir after the quake to repair damage to it.

The Zipingpu dam is upstream from the Three Gorges dam, which in turn is upstream from 40 million people.

A series of serial dam failures in 1975 in China, at Banqiao and other dams downstream from it represents the largest energy disaster of all time, killing more than 1/4 of a million people.

Of course everyone here knows all about that one, given the amount of time we all spend discussing it, which is almost continuously.

Just kidding...

A similar disaster was narrowly averted in the United States in 1983 - a matter that is somewhat obscure - but was averted when the Corp of Engineers went to a local hardware store to get plywood to avert the collapse of Lake Powell, upstream from the Hoover dam.

I covered this point on another website some time ago: A Tale of Two Centimeters: The Near Collapse of the Colorado River Dam System in 1983.

Hydrological triggering of seismicity is being increasingly discussed in the literature. Another example is given in L. Bollinger et al. / Earth and Planetary Science Letters 290 (2010) 20–29



Read entry | Discuss (13 comments) | Recommend (+2 votes)
Posted by NNadir in Environment/Energy
Wed Jan 13th 2010, 09:11 PM
plants in France, or for that matter anywhere else.

Most nuclear plants worldwide run at close to or better than 90% of rated power, whereas there are zero solar plants that ever reach their rated power, and none that have reliability (capacity utilization of even 30%).

The same losers carry on endlessly about how wonderful wind and solar are, even though wind plants woud need to increase their pathetic reliability by a factor of more than 3 to run as reliably as nuclear plants, and wind by a factor of 9.

Today, January, 13th, 2010, the $700,000 "52 kw" solar toxic nightmare at MOCA in North Adams Massachusetts produced just 39 kWh of energy. Since the sun is now down and the piecd of consumer garbage isn't going to anything now, we may conclude that, since today, like every other day, contains 86,400 seconds, and 39 kWh is still 1.4 X 108J, just like it has always been and always been, the output of the $700,000 system is just 1600 watts as average continuous power, not counting the waste that would have been involved in the imaginary batteries, if they existed, which they don't.

A lawnmower produces more power than that (since 1 horsepower still, as it always has, equals roughly 746 watts).

The capacity utilization of the "52 kW" solar plant today? 3%. Useless.

How do I know these details? Because the MOCA system posts its data "live," as I never tire of pointing out: http://www.sunviewer.net/portals/MoCA /

Have all the "renewables will save us" gas greenwashers in Massachusetts been living without electricity today just because the fucking solar toy isn't working reliably?

Of course not. They're right here on the internet hawking their selective attention like it fucking matters and posturing with denial.

Solar and wind fail miserably on the same criteria, reliability, that the "renewables will save us" gas greenwasher apply only to nuclear.

So called "renewable energy" will never be as clean, as safe, as reliable or as inexpensive as nuclear power.

Read entry | Discuss (1 comments)
Posted by NNadir in Environment/Energy
Fri Jan 08th 2010, 01:17 AM
A secret cabal of 150 unelected dirty birds, hiding behind "endangered species laws," funded by big wing interests is delaying the expansion into every valley, crook, mountain top, desert and dessicated dry lake bed in California marvelous "green" windmills filled with ton quantities of dangerous fossil fuel based lubricants that occasionally burst into flames.

This dastardly scheme against electric cars and the endless stream of asphalt and concrete connecting on which they upon which they depend as vital habitats, and the endangered desert tract housing cul-de-sac species that flower and depend on chaparral fires to reproduce, is funded by an elitist organization known as "Ventana Wild Life Society."

Wild life my ass. They wouldn't know a good kegger party in the pack of my F150 pick up truck that could be fueled by electricity or wind powered hydrogen (except for the fact that I'm waiting for the super delicious model to hit showrooms in 2005) if I invited them to one, which I wouldn't, since they're obviously bird brains.

California Condors and the Potential for Wind Power in Monterey County.

Let's stop the bird shit now. It's damn hard to remove from my windshield, meaning I'm often delayed several minutes in my quest to get stuck in traffic in my swell F150 that could be electric some day.
Read entry | Discuss (33 comments) | Recommend (+1 votes)
Posted by NNadir in Environment/Energy
Thu Dec 31st 2009, 10:11 PM
From the Grid.

Um...um...um...

Lessons Learned From Case Studies of Six High Performance Buildings.


...the U.S. Department of Energy’s (DOE) Building Technologies Program has established a goal to create the technology and knowledgebase for marketable zero-energy commercial buildings (ZEBs) by 2025. To help DOE reach its ZEB goal, the Buildings and Thermal Systems Center at the National Renewable Energy Laboratory (NREL) studied six buildings in detail over the past four years to understand the issues related to the design, construction, operation, and evaluation of the current generation of low energy commercial buildings. These buildings and the lessons learned from them help inform a set of best practices—beneficial design elements, technologies, and techniques that should be encouraged in future buildings, as well as pitfalls to be avoided. The lessons learned from these six buildings are also used to guide future research on commercial buildings to meet DOE’s goal for facilitating marketable ZEBs by 2025. The six buildings are...




Measurements in all six buildings showed that they used more energy and produced less energy than predicted in the design/simulation stage. Several reasons were documented:

�� There was often a lack of control software or appropriate control logic to allow the
technologies to work well together.

�� Design teams were too optimistic about the behavior of the occupants and their acceptance of
systems.

�� Energy savings from daylighting were substantial, but were generally less than expected.

�� Plug loads were often greater than design predictions.

�� Effective insulation values are often inflated when comparing the actual building to the as designed building.

�� PV systems experienced a range of operational performance degradations. Common
degradation sources included snow, inverter faults, shading, and parasitic standby losses.


The bold is mine. Further on:

During nighttime hours when the Oberlin or Cambria PV system was in standby mode, the inverters and transformers consumed electricity. The inefficiency of the isolation transformers in these systems results in a power draw of approximately 300 W per 15 kVA transformer. At Oberlin, this standby parasitic load of the three inverters and isolation transformers was a constant 900 to 1000 W during times of no PV production. The primary purpose of the isolation transformers was to transform the three-phase AC 208- delta output of the inverters to utility-compatible, three-phase AC 208-wye/120. The Oberlin no-load transformer inefficiency of 2% of rated capacity resulted in a standby loss of 4,363.5 kWh/yr, or 7.3% of the total PV production. This does not include transformer losses when the PV system is generating power. Cambria’s inverter faults caused considerably greater standby losses. The causes of the inverter faults were a high AC voltage and high temperature. The high temperature fault was the most severe because the system would have to be manually reset. The inverter was removed and sent to the manufacturer in December 2003 and replaced with a new unit in February 2004. From May 31, 2002 to December 31, 2003, the main PV system produced no energy on 50% of the days because of inverter problems. On many other days the system was operational for only part of the day because of inverter problems. From May 31, 2002 to December 31, 2003, the parasitic load on the PV system equaled 40% of the energy delivered to the building by the main PV system. Most of the parasitic load (37%) occurred when the PV system was down at night or because of an inverter fault; the other 3% were transformer losses during PV system operation. From the time the inverter was replaced on February 20, 2004 to December 31, 2004, the main PV system was down only three days because the whole system was shut down. During this same period, the parasitic load of the isolation transformer was 18% of the total energy delivered to the building. The monthly parasitic load varies from 11% in summer to more than 50% in winter


Great system.

I wonder if anyone here ever wrote a puff piece here about the "new" Oberlin College solar system.

I have no idea how Governor Hydrogen Hummer's brazillion solar roofs program is working out, but its a good thing they keep building all those gas plants in California. They'll be able to use them to keep those inverters humming all through the night.
Read entry | Discuss (8 comments) | Recommend (+1 votes)
Posted by NNadir in Environment/Energy
Sat Nov 14th 2009, 09:55 PM
One of the big jokes about the dumb fundie German nuclear phase out, engineered by the Russian gas company executives Gerhard Schroeder and Joschka Fischer, is that it was a "bait and switch" program extraordinaire.

There was all kinds of rhetoric from dumb fundie anti-nukes about how Germany didn't "need" nuclear power because the useless and failed so called "renewable energy" industry was so great.

Eight years later, Germany produced between January to July 2009 (YTD figures for July) 33,538 GWh of so called "renewable energy," wind, solar, geothermal and trash burning combined, 14,680 GWh of hydroelectric power, 73,573 GWh of "phasing out" nuclear power, and 205,056 GWh of dangerous fossil fuel power.

IEA data on German Electrical Production, page 14.

This makes nuclear energy, post Gas Executive "nuclear phase out" announcements aside (made when the gas company executives were nominally heading the German government and not Russian gas pipeline companies) the largest source of climate change gas free energy in Germany still in spite of massive German dumb fundie anti-nuclear ignorance.

Germany has no permanent repository for dangerous fossil fuel waste, has no plans to built one, no plans to site one, and no plans to design one. The waste dump for all of Germany's dangerous fossil fuel waste is earth's atmosphere.

This problem is obviously a failure not of technology but of language. Obviously the secret of improving the performance of the German renewables industry is to declare dangerous coal gas, "renewable."

German science has risen to the task.

Recently a very stupid dumb fundie anti-nuke posted a reference to a stupid paper on this website - he posts it over and over and over and over and over again as if it were the only paper in the scientific literature - claiming that um, renewable energy was going to save us all, and he could prove it by citing the same damn paper again and again and again and again. The reference reported by the very stupid dumb fundie anti-nuke was Energy Environ. Sci., 2009, 2, 148 - 173. Of course, if one thinks critically, one realizes that not everything published in the literature is true.

I'll let people judge for themselves whether this paper from the scientific literature is accurate:

Organic GeochemistryVolume 35, Issues 11-12, November-December 2004, Pages 1537-1549.

The title of the article is "Coalbed methane in the Ruhr Basin, Germany: a renewable energy resource?"

Um...um...um...

Here's some excepts:

Total methane emissions from hard coal mines range between 25 and 45 Mt (Boyer et al., 1990; Beck et al., 1993; Clayton et al., 1993; Khalil et al., 1993) on a global scale. Within the last 5 years, more and more countries utilized a part of the coal gases for energy production. The reasons for this trend are an increasing utilization of abandoned mining areas, and a more effective and sustainable utilization in active mining. This utilization comprises all different kinds of coal gases. Coal gases are subdivided into coalbed methane (CBM), coalseam methane (CSM), and coalmine methane (CMM). CBM is coal gas produced from boreholes in unworked coalbearing rocks. CSM is coal gas released in active collieries, whereas CMM escapes or is produced from abandoned mines. The coal gases produced in the Ruhr Basin are CSM and CMM. In the Ruhr Basin, 77 power stations with a total of 70 MW converted CSM and CMM into 650 GWh energy in 2002. About 85 million Euros have been invested in these plants, which consumed 280 · 106 m3 of coal gas in 2002. The annual production and the production characteristics differ considerably between the sites. There are sites with generally rising, falling as well as stable production rates.


By the way, Germany has been doing what it can to help coal bed methane "fields" - abandoned coal mines - form around the world. The South African coal industry for instance, has big plans to fuel all of the new German coal plants.

Here's some happy talk from the Materials and Methods section of the paper:

Water samples were taken at six sites (A–F, see Fig. 1) in April 2003. Site A is a more or less natural water spring in the city of Dortmund which produces water from abandoned mine works since coal mining and water drainage measures ceased (Table 4). Locality B in the city of Essen as well as C and D in Bochum are pumping stations within abandoned mining areas which transport mine waters from depths of several hundred metres to the surface, with hardly any contact to oxygen (air). Samples E and F were received from an active mine near the town of Haltern.


Natural spring water. Can we bottle it in bis phenol A bottles?

And what's this stuff about active coal mines? In a "renewable" paradise? As Donald Fagen once sang in a slightly different context: "It just couldn't be and only a fool would say that..."

What follows is a tortured argument that really the source of the methane found in these mines is biogenic, derived from organisms living in the mines, maybe mine timbers.

So it's OK therefore. It's renewable. Problem solved and the apparent failure of the German renewable energy industry to match the "phased out" nuclear industry, the hydro industry or the dangerous fossil fuel industry is just an illusion.

Sigh...

Read entry | Discuss (0 comments) | Recommend (+2 votes)
Posted by NNadir in Environment/Energy
Sat Nov 14th 2009, 01:13 PM
As is well known to people who have taken a science course in their lives, the vast majority of the reduction of carbon dioxide by living systems is dominated by the use of chlorophyll, which is structurally a porphyrin complex of magnesium.

Here is a picture of the chlorophyll porphyrin:



The source of energy for the reduction of carbon dioxide by chlorophyll is of course, solar energy, and, from a thermodynamic perspective, the energy efficiency is extremely low, less than 10%, sort of like the capacity utilization of solar PV toxicological nightmares, which seldom ever reaches 15%, which is why the fraudulent solar industry always advertises it's systems not in terms of energy but rather by peak power which solar PV systems never actually reach.

Live, From the Massachusetts Museum of Contemporary Art: The Solar System.

One Holy Grail in energy science is to achieve the efficient electrochemical reduction of carbon dioxide to energy carriers, which are chemically reduced compounds.

I found a relatively recent report in the scientific literature interesting in this regard since it involves porphyrin biomimetic chemistry to accomplish the reduction of carbon dioxide using electricity as a source of energy.

Here is the abstract of the paper to which I will refer:

Journal of Molecular Catalysis A: Chemical 229 (2005) 249–257

The title of the article as one can see by clicking on the link above is: "Electrochemical reduction of CO2 mediated by poly-M-aminophthalocyanines (M = Co, Ni, Fe): poly-Co-tetraaminophthalocyanine, a selective catalyst."

Here are some excerpts from the paper:

The electrochemical reduction of CO2 has been extensively studied due to its increasing concentration in the atmosphere generating the so-called “green house effect” which might cause undesirable changes in the environment. It presents the possibility of recycling and transforming this raw material into a source of carbon for chemicals or fuels <1–3>. This reaction has been studied on different electrodes;metallic cathodes such as Hg, Pb, Sn, In, Au, Ag, Pt, Ni and Cu <4–6> and semiconductors such as p-Si, p-CdTe, p-InP, p-GaP, n-GaAs <3,7,8>. Carbon electrodes have also been used but, in this case, the reaction requires high over potential and depending on the electrolyte, evolution of H2 could decrease the efficiency of the process <9–11>. However, it is possible to use carbon electrodes if transition metal complexes act as electronic mediators either in solution <12–17> or becoming modified electrodes <18–23>. Azamacrocycles like porphyrins or phthalocyanines containing different transition metals have been investigated showing good electrocatalytic behavior when forming parts of modified electrodes <24–32>. For these cases, the selectivity and efficiency will depend on the media, applied potential, and microenvironment among other factors <24–32>. In the last years the possibility of electropolymerizing azamacrocyclic complexes on carbon electrodes surfaces has also been studied <33,34>...


The porphyrin complexes used in this chemistry are not co-ordination complexes of magnesium, as chlorophyll is, but rather complexes of the metals cobalt, nickel and iron, which happen to be the most paramagnetic elements among the transition "d" elements. (Lanthanide paramagnetic elements such as samarium are also known.)

The South American scientists who have written this paper report the products of this reaction:

The results of the electrolysis experiments are summarized in Table 1. It is worth noticing that the active polymers
release protonated species, since it is frequently reported that phthalocyanines or porphyrins (of Co generally)<27–31> are selective catalyst for CO. Indeed the reaction
products for polymeric-polypyridine metallic complexes modified electrodes were exclusively formic acid and formaldehyde <18–20>.


In table one the only other product is hydrogen.

Formaldehyde and formic acid need to be further reduced to methanol or DME to be useful as fuels. This would best be accomplished by hydrogenation, but obtaining the hydrogen further reduces efficiency.

The efficiency for the reduction complex was highest for nickel pthalocyanine complexes, about 40%.

The best catalyst in this case was Ni-phthalocyanine, with a maximum current efficiency of 40% at −1.5V versus NHE. Selectivity is dependent on the metal center and the electrochemical potential used in the experiment. Formation of urea specifically depends on the ability of the metal center to form CO and ammonia separately.


The more I think about energy, by the way, the more I recognize the element nickel as being one of the most important elements in the periodic table for technological development. This metal has tremendous use both as a catalyst, where it is important in oxidation reduction chemistry, but also in the preparation of high temperature superalloys like Hastelloy and Inconel. It's a great metal.

I hope this report doesn't generate any "we and our stupid cars are saved" thinking, but it is interesting because of the electrochemical organic moieties.


Read entry | Discuss (0 comments) | Recommend (+1 votes)
Posted by NNadir in Environment/Energy
Sat Nov 14th 2009, 01:56 AM
Despite briefly, for 10 minutes periods that end up consuming lots of electricity as internet mavens admire it, producing large amounts of power from wind, Spain's reliance on renewable illusions has a predictable result: A huge increase in the output of carbon dioxide.

Predictably the change is dominated by the use of dangerous natural gas. There are no permanent disposal facilities in Spain to contain dangerous natural gas waste for eternity, none are designed, sited, or planned. The primary dump for Spanish dangerous natural gas waste is earth's atmosphere, which Spain continues to use in ever increasing amounts.

Dangerous Fossil Fuel Waste Dumping Around the World.


The Spanish dangerous natural gas dumping program is Amory Lovins' wet dream, an official anti-nuke program of the type that enriches dangerous natural gas companies who then get to pay Lovins "consulting fees."


Although so called "nuclear waste" in Spain has killed zero people, and zero people have been injured by Spanish nuclear facilities, the Spanish, now experiencing desertification of their peninsula have announced a policy of producing wastes that do kill people.

Of the 45 million tons of increased dangerous fossil fuel waste dumping, 35 million tons derive from dangerous natural gas burning. Dangerous natural gas is dumped in Spain when the wind plants there briefly produce zero percent of Spain's electricity.

Dangerous Natural Gas Waste Dumping Policies Around the World.

More recent figures on the failure of the weeny renewable energy industry to make a difference in OCED practice of dumping dangerous fossil fuel waste into the atmosphere can be seen in the simple pie graphs produced by the IEA for 2009, showing that despite 50 years of dumb fundie chanting cheering, so called "renewable energy," excepting the hydroelectricty that has already destroyed most of the world's major river systems, accounts for just 3% of OCED electricity.

Wanna bet that little dumb fundies can't interpret a simple pie chart? Don't bet on them being able to do it: You'll lose money, since their game is denial.

In the period between January and July of 2009, nuclear power produced more energy than wind, solar, hydro, geothermal and biomass combustion combined, producing, in the process far fewer deaths, zero, than these other forms of energy. In terms of something called "numbers" - to which anti-nuke fundies object vociferously, nuclear power produced 1,252.0 TWh whereas hydro produced 805.8 TWh and the combined solar, wind, geothermal and biomass industry produced 152.6 TWh. Unless you are a dumb fundie anti-nuke, you can add 805.8 and 152.6 and determine that the sum is less than 1,252.0.

In fact, without hydro, the entire renewable portfolio, wind, solar, geothermal and biomass remains in the OCED a trivial form of energy, so trivial that it could disappear without anyone noticing.

Interestingly, proponents of the failed so called "renewables" industry, like all dumb fundies who rail against stuff they can't understand, oppose the world's largest, by far, form of climate change gas free energy. They couldn't care less about dangerous fossil fuels, without which their toys would collapse.



Read entry | Discuss (34 comments) | Recommend (+3 votes)
Posted by NNadir in Science
Tue Nov 03rd 2009, 07:45 PM
but I'll leave that special feature to my work at Kos, of which I am still very proud in spite of what the wardens have done to the place. There were times at Kos that I have felt I actually wrote things that I could not have written better, and that's been a rare experience for me for most of my life.

Getting the polls... Writing the polls over there was often, almost always in fact, the most difficult part of the work, the one that required the most art. I certainly don't miss the responsibility of doing it. It was hard. It was very difficult to repeat the same thing over and over and over - a literary device about with a certain meaning conveyed not by the words themselves but by the style - still be amusing and still refer not only to the topic of the diaries themselves, but also the absurdity of the fact that some of these things even needed to be discussed at all. The polls worked, but a lot of times that I went to write one, I'd get a knot in my stomach. (Sometimes I'd get a knot feeling that "I shoulda said..." about a poll.) I always felt great when someone would comment in the diary - and there were more than one such occasions - remarking, "Best. Poll. Ever."

That was second only to someone telling me that they read my diaries and changed their minds about nuclear energy because of my writings. If that happened just once, it would have made it worth it, but it happened many times.

For the record, Tim certainly isn't the worst of the dumb fundie anti-nukes, but he is one who, rightly or wrongly, has been awarded nonetheless a certain level of autocratic power and is handling it badly. On some level that's not surprising if you come to understand certain features of his life.

There are some things he did in the past that I thought quite noble. Most fundamentalist anti-nukes are consumerist simpletons who are notably devoid of an ability to look beyond their own provincial realities. Tim was not that kind of guy in his better days.

He and I corresponded off line briefly and he was often gracious, even as I am almost never gracious. He is one of those guys who almost makes one want to weep, someone who definitely struggles to do good, but gets so swept by his illusions that he ends up, wholly unintentionally, being a force for doing the great wrongs without ever even being able to realize the depth and tragedy and nature of the illusions themselves.

Anyone who can't relate to that most human of predicaments is probably suffering from a short supply of self-cognition.

That said, ignorance is ignorance, of course, as I used to say over there, "Ignorance kills." Ignorance is not neutral. Ignorance is not acceptable. Ignorance must be confronted.

Although I am angry at Tim for giving reign to his ignorance, it's not like it's active ignorance, the kind of ignorance that insists on its right to assert itself as glory. I think on some level he is able to question himself. Better than 95% of the anti-nukes around, from the stupid and evil Amory Lovins to some of the more prosaic dunderheads here, revel in ignorance of the latter type. They positively glory in not knowing what they're talking about. They are actually proud of displaying with force how little they know. Again, Tim was generally not that kind of guy.

But these concerns are pedestrian. The real problem is our country and our planet and what we must do about them with the fuse burning ever closer to the bomb. We get so swept away that we forget that there is not much time left.

Over all these bitter years, I worried myself knowing that it is far more difficult to act than to criticize actions, and I've often cited Theodore Roosevelt's famous speech at the Sorbonne, the one about "being marred with sweat and dust", - which Roosevelt made in a typically triumphant manner by the way - as evidence of that difficulty and its risks. My goal in seeing the Democrats elected was not to triumph over the Republicans as an end in itself, but to hope that we would govern wisely, to give humanity its best hope at overcoming the vast challenge of a collapsing planet, something of which the Republicans were clearly temperamentally incapable.

If anyone seems equal to avoiding those risks of being swept away by power itself, the current President would seem to be the best we can hope for, because he has a thick skin, grace, intellect and most importantly a sense of humor. In this way the President may manage to achieve what the great Presidents achieve, a sense of limits that, at their most beautiful and evocative present themselves not as failure but as the success accomplishing the maximum for what those limits allow. Of all the qualities that a President must have, a sense of humor is the most important requirement for achieving those goals.

The great Presidents were all good at being self deprecating.

Compared to the challenges in Washington, DailyKos, and all other blogs are, in fact, provinces of small import, however big they think themselves, however humorless they are becoming. I am grateful however for many things I learned at Kos that I didn't know before. I certainly got to know about the President there - he was certainly not initially my ideal candidate but what I learned at Kos changed my mind - and knowing about the President has given me - still - something that doesn't come easy to me: Some hope. This is the first time in a very long time that I have wanted to hear what a President has to say on a subject, any subject. That's something and let me show some gratitude: Daily Kos was a beacon - as this place was - in some very dark times when I used to dread having to listen to what was advertised as "Our President."

But with the incredible load of work before us and the needs so crucial, who really cares about Kos and Democratic Underground and whether small obnoxious insulting bloggers who write silly polls are happy with them? Does it matter?

No.

All that said, the management at Kos is a little starstruck with itself and is probably not avoiding what Fox News was unable to avoid at the peak of its (dubious) credibility. Kos himself seems to think he's a cross between Madonna and Rupert Murdoch. I never paid much heed to him and actually have no real sense of his ideas but from what little I do know, I think he's laying the seeds of his own demise. (He certainly has a corps of anti-science types around on his front page appealing, um, to "science," and hypocrisy has a way of eroding one's credibility.) I could be wrong about the future of DailyKos, but, again, who cares?

Still Tim... Tim... Tim...there was a part of me that really liked him as dumb as his anti-nuke ideas were because I really felt he wanted to learn something and he really wanted to be a Mensch, a man. Still, somewhat more tragically than is the case with Kos himself, Tim has always been limited by being the opposite of what our much strained President is: Tim has too thin a skin, is not much of an original thinker and he sorely lacks both creativity and a sense of humor.

That's too bad. He would have been better off without any kind of authority, and he wouldn't have ended up looking like that kid you knew in elementary school whose personality was destroyed by being appointed hall monitor by the Vice Principal. Tim could have been more, because, maybe unlike me, I really suspect that he sorely needs to feel that he is a good man. In the right place and time that need alone can lead one to do great things.

But this little post ended up something like an old NNadir diary, and I'm rambling insufferably. Thanks for coming by and, oh yeah, even if we don't use our polls much, we have smileys here in case you ever find yourself too lazy to use words:
Read entry | Discuss (1 comments)
Posted by NNadir in Science
Mon Nov 02nd 2009, 10:53 PM
As a kind of shorthand, I like to say that I favor the banning of dangerous fossil fuels on the grounds that there is no solution to the problem of dangerous fossil fuel waste which is rapidly in geological terms doing extreme damage to the existing biosphere.

Specifically, I don't buy into the Amory Lovins/Gerhard Schroeder/Joschka Fisher meme that any of dangerous fossil fuels can be regarded acceptable, including the ones that pay their salaries, specifically, dangerous natural gas. It is pure bull shit - and not bull shit from a giant factory farm feedlot poop to methane scheme either - to claim that dangerous natural gas is a "clean" fuel. It is only slightly, very slightly, more ridiculous than appealing to so called "clean coal."

(The more that I think about it, the more I think that the anti-nuke fundamentalism of the aforementioned men is a deliberate function of their overt corruption by dangerous fossil fuel interests.)

I personally regard the phase out - the fast phase out - of dangerous fossil fuels as something that should be one of humanity's highest priorities, higher than health care, higher than the wars, higher than a host of other problems. This is because however great our problems with these issues may be, they will inevitably be made wildly uncontrollable by an unstable climate, particularly the risk of war as the number of refugees grows larger.

I am sometimes criticized for my rhetoric and although I generally couldn't care less, there is a technical problem with my rhetoric, inasmuch as I rail against methane as a dangerous fossil fuel, whereas the fossil part is assumed. There is a theory - to which I personally give little credence - involving abiotic methane, methane that has remained in rocks and subterranean formations from the time of the accretion of the earth. Advocates of this theory - including some who have drilled very deep holes at great expense to attempt, thus far with no success to "prove" it - point to the existence of huge quantities of methane that are known to be in interstellar clouds and, for that matter, in the atmospheres of the gas giant planets and some of their moons, like the moon of Saturn, Titan, that was recently visited by a European space probe as part of the Cassini mission. There is a form of methane however that is not strictly either abiotic nor fossil: This form is the famous methane hydrates in the deep ocean that have been viewed alternately as a source of both optimism and terror.

Personally I come down on the terror side, since I regard this methane not as a hopeful source of energy with which to keep Viking Stoves fired up in stupid car CULTure suburban McMansions, but as a (potentially) unstable sink for holding a dangerous risk to the atmosphere in place for as long as is possible. I am concerned that warming oceans will cause some of this gas to be released, contributing a huge positive feedback loop.

Earlier this year in connection with another subject in which I am interested, I collected a paper on the origins of these hydrate formations.

Here is the abstract of the paper to which I refer:

Journal of Geochemical Exploration 95 (2007) 88–100

The title of the article is: "Terrestrial organic matter controlling gas hydrate formation in the
Nankai Trough accretionary prism, offshore Shikoku, Japan"

If the first paragraph of the article doesn't scare the pants off of you, it should:

The presence of marine gas hydrate throughout the world has been inferred from geophysical, geochemical, and geological evidence mainly by bottom simulating reflectors (BSRs), chemistry of sediment pore water, and direct sampling of gas hydrate (Shipley et al., 1979; Gornitz and Fung, 1994; Kvenvolden, 1995). This potentially large reservoir of methane in gas hydrate is of great interest as potential energy resource. The total amount of methane carbon in gas hydrate is postulated to be about twice as large as the carbon present in all known fossil-fuel resources (Kvenvolden, 1988a; Satoh et al., 1996).


Imagine someone trying to dump twice as much dangerous fossil fuel waste as is already known...

There I go again, saying "fossil." What I should say, at least strictly, if this paper is correct is that I favor banning the burning of deposited methane, since it is not clear that the origin of methane hydrates involves ancient formations. To wit, some other excerpts of the paper:


Many investigations have been carried out to understand the formation of marine gas hydrate around the Japanese Islands, especially offshore Tokai and offshore Shikoku (e.g. Matsumoto et al., 2004; Waseda and Uchida, 2004). It is, on the other hand, suggested that methane from dissociated gas hydrate can be a factor in global warming (Kvenvolden, 1988b; Nisbet, 1990; Paull et al., 1991; Harvey and Huang, 1995), and that dissociation of gas hydrate can induce a submarine geohazard such as surficial slides and slumps (McIver, 1982; Kvenvolden, 1999). Most of methane in gas hydrates is characterized by significantly light stable carbon isotope ratios, strongly suggesting a microbial origin. Microbiologists, however, still have not obtained any direct evidence of substantial active methanogenesis in methane hydrate bearing sediments (Parkes et al., 2000). The mechanisms of gas hydrate formation still remain unclear, and understanding gas hydrate formation and decomposition processes is now one of the current topics in geology, geochemistry, and biogeochemistry.


In other words, the stuff may have formed relatively recently from biological action. Some may accrete into the crust by being dragged along by subduction plates.

The authors do extensive analysis in their paper - wonderful analytical chemistry - and find lots of interesting and exciting things, like unusually long chained alkanes and primary alkanols, some with chain lengths up to 32.

The authors discuss at some length the difference between biogenic methane formed by decarboxylation of acetate and that formed by the biogenic reduction of carbon dioxide either from carbonate rocks or carbon dioxide formations, many of which are known and some of which - as amazing at it might seem in these times - are mined.

If one is interested, one may refer to the original paper at a subscribing institution's library.

A little from the conclusion:

Widely distributed BSR in accretionary prisms of Nankai Trough suggests distribution of enormous amount of gas hydrate. The presence and absence of BSRs are not only controlled by temperature–pressure condition for gas hydrate stability, but also by heterogeneity of geophysical, geochemical and geological characteristics of subsurface sediments. All three Sites 1175, 1176, and 1178 of ODP Leg 190 in Nankai Trough commonly have gas hydrate stability zones. However, only Site 1178 has substantial concentrations of gas hydrate. Sediments in Subunit IIA just beneath the major gas hydrate zone of Site 1178 are characterized by higher TOC contents, abundant terrestrial organic matter, and higher organic maturity compared to subsurface sediments at Sites 1175 and 1176. Terrestrial organic matter can produce much CO2 via the transformations of fulvic acids and humic acids to kerogen during the early diagenesis compared to marine organic matter.


I really don't trust human beings to discover huge reserves of methane, since I expect that they will do something stupid and dangerous with them, embracing short term and possibly suicidal thinking when they approach it. The idea of enormous reserves makes me shiver to think what may happen in that still shivering cold water.

Read entry | Discuss (5 comments) | Recommend (+2 votes)
Posted by NNadir in Environment/Energy
Wed Oct 28th 2009, 08:44 PM
First Lady blames Saitoti for oil spill deaths

“I was saddened by the Nakumatt inferno and now we have the Molo tragedy. Our leaders should wake up and do something.”

The death toll has reached 118 after seven of the 47 victims flown from the scene to Nairobi succumbed to their injuries.

She lamented that most of the dead were young people and school-going children, who had been sent by their parents to scoop oil for sale.

Mrs Kibaki also hit out at MPs whose constituents are dying of hunger.

“You should be ashamed. With your salaries you can feed the whole constituency...why should you let anyone die of hunger?


Imagine, just for a minute - if you have a sense of humor - that these 118 dead had been European and for another minute, that the cause of their death was a radioactive spill.

There would have been an international fetish lasting for decades.

As it is, this is the first lady of Kenya, the land of our President's father, and the spill involved oil and so the world couldn't care less about these people. The decision to not care less about any dangerous fossil fuel deaths, including the millions who die each year from air pollution, is an arbitrary decision, one made in a moral vacuum that in an ethical world would be reprehensible.
Read entry | Discuss (5 comments) | Recommend (+8 votes)
Visitor Tools
Use the tools below to keep track of updates to this Journal.
 
Home  |  Discussion Forums  |  Journals  |  Campaigns  |  Links  |  Store  |  Donate
About DU  |  Contact Us  |  Privacy Policy
Got a message for Democratic Underground? Click here to send us a message.