New: hydrocarbon from electricity and CO2!

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elephant
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New: hydrocarbon from electricity and CO2!




by elephant » 31/03/12, 19:33

Fresh news: an American researcher has managed to synthesize isobutanol from electricity and CO2 and a biochemical reaction. A kind of phtosynthesis in a way.

All costs: published this March 29, 2012

Liao and his team genetically engineered a lithoautotrophic microorganism known as Ralstonia eutropha H16 to produce isobutanol and 3-methyl-1-butanol in an electro-bioreactor using carbon dioxide as the sole carbon source and electricity as the sole energy input.


http://www.sciencedaily.com/releases/20 ... 171607.htm

The advantage: storing solar energy in the form of fuel, that is to say with an energy / weight ratio much higher than that of batteries and certainly more convenient than in the form of hydrogen.
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elephant Supreme Honorary éconologue PCQ ..... I'm too cautious, not rich enough and too lazy to really save the CO2! http://www.caroloo.be
dedeleco
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by dedeleco » 31/03/12, 20:31

I had seen, but very complicated, formic acid with solar electricity, then bacteria giving heavy alccools but also good and simpler, make oil with algae in the sun and in CO2.

very optimistic about the future:
"We've been able to separate the light reaction from the dark reaction and instead of using biological photosynthesis, we are using solar panels to convert the sunlight to electrical energy, then to a chemical intermediate, and using that to power carbon dioxide fixation to produce the fuel, "Liao said. "This method could be more efficient than the biological system."

Liao explained that with biological systems, the plants used require large areas of agricultural land. However, because Liao's method does not require the light and dark reactions to take place together, solar panels, for example, can be built in the desert or on rooftops.

Theoretically, the hydrogen generated by solar electricity can drive CO2 conversion in lithoautotrophic microorganisms engineered to synthesize high-energy density liquid fuels. But the low solubility, low mass-transfer rate and the safety issues surrounding hydrogen limit the efficiency and scalability of such processes. Instead Liao's team found formic acid to be a favorable substitute and efficient energy carrier.

Liao and his team genetically engineered a lithoautotrophic microorganism known as Ralstonia eutropha H16 to produce isobutanol and 3-methyl-1-butanol in an electro-bioreactor using carbon dioxide as the sole carbon source and electricity as the sole energy input.

“Instead of using hydrogen, we use formic acid as the intermediary,” Liao said. "We use electricity to generate formic acid and then use the formic acid to power the CO2 fixation in bacteria in the dark to produce isobutanol and higher alcohols. "

The electrochemical formate production and the biological CO2 fixation and higher alcohol synthesis now open up the possibility of electricity-driven bioconversion of CO2 to a variety of chemicals. In addition, the transformation of formate into liquid fuel will also play an important role in the biomass refinery process, according to Liao.

"We've demonstrated the principle, and now we think we can scale up," he said. "That's our next step."


There is an armada of publications of this type.
as annexed in:
http://www.physorg.com/news/2012-03-mic ... -fuel.html

http://www.sciencedaily.com/releases/20 ... 112104.htm
Using the Energy in Oil Shale Without Releasing Carbon Dioxide in a Greenhouse World


http://www.physorg.com/news187031401.html#firstCmt
Catalyst could power homes on a bottle of water, produce hydrogen on-site
http://www.physorg.com/news218721227.html#firstCmtBESC scores a first with isobutanol directly from cellulose

http://www.physorg.com/news179683624.html#firstCmt
Researchers engineer bacteria to turn carbon dioxide into liquid fuel

http://www.physorg.com/news219567788.html#firstCmt
Researchers engineer E. coli to produce record-setting amounts of alternative fuel

and many other very interesting in these previous links !!

The imagination has immense possibilities in renewable, not to be overlooked and developed !!

The sun at 1KW / m2 can be used according to many methods, without reducing our energy consumption, just avoid polluting and depleting what is non-renewable !!
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