２００８年に玉川大学で水素をだす燃料電池をつくっている話題を提供したが
すでに２００７年にペンシルベニア州立大学で同様の研究を発表している。
http://wiredvision.jp/news/200711/2007111522.html
こういうのはちゃんと先人の研究を引用しないとね。
論文は
”11月13日付の『米国科学アカデミー紀要』(PNAS)に論文が掲載されたこの新しい方法では、既存の技術を使って即座に実用化できるので、水素を実用的で持続可能な燃料に「格上げ」するものとして非常に有望だ、と研究者らは述べている。
”
http://www.pnas.org/content/104/47/18871.abstract
Sustainable and efficient biohydrogen production via electrohydrogenesis
Shaoan Cheng and
Bruce E. Logan*
+Author Affiliations
Department of Civil and Environmental Engineering, Pennsylvania State University, University Park, PA 16802
Edited by James M. Tiedje, Michigan State University, East Lansing, MI, and approved September 17, 2007 (received for review July 9, 2007)
Abstract
Hydrogen gas has tremendous potential as an environmentally acceptable energy carrier for vehicles, but most hydrogen is generated from nonrenewable fossil fuels such as natural gas. Here, we show that efficient and sustainable hydrogen production is possible from any type of biodegradable organic matter by electrohydrogenesis. In this process, protons and electrons released by exoelectrogenic bacteria in specially designed reactors (based on modifying microbial fuel cells) are catalyzed to form hydrogen gas through the addition of a small voltage to the circuit. By improving the materials and reactor architecture, hydrogen gas was produced at yields of 2.01–3.95 mol/mol (50–99% of the theoretical maximum) at applied voltages of 0.2 to 0.8 V using acetic acid, a typical dead-end product of glucose or cellulose fermentation. At an applied voltage of 0.6 V, the overall energy efficiency of the process was 288% based solely on electricity applied, and 82% when the heat of combustion of acetic acid was included in the energy balance, at a gas production rate of 1.1 m3 of H2 per cubic meter of reactor per day. Direct high-yield hydrogen gas production was further demonstrated by using glucose, several volatile acids (acetic, butyric, lactic, propionic, and valeric), and cellulose at maximum stoichiometric yields of 54–91% and overall energy efficiencies of 64–82%. This electrohydrogenic process thus provides a highly efficient route for producing hydrogen gas from renewable and carbon-neutral biomass resources.
biofilms
cellulose
electron transport
hydrogen
microbial fuel cells
Footnotes
*To whom correspondence should be addressed. E-mail: blogan@psu.edu
Author contributions: S.C. and B.E.L. designed research; S.C. performed research; S.C. analyzed data; and S.C. and B.E.L. wrote the paper.
The authors declare no conflict of interest.
This article is a PNAS Direct Submission.
すでに２００７年にペンシルベニア州立大学で同様の研究を発表している。
http://wiredvision.jp/news/200711/2007111522.html
こういうのはちゃんと先人の研究を引用しないとね。
論文は
”11月13日付の『米国科学アカデミー紀要』(PNAS)に論文が掲載されたこの新しい方法では、既存の技術を使って即座に実用化できるので、水素を実用的で持続可能な燃料に「格上げ」するものとして非常に有望だ、と研究者らは述べている。
”
http://www.pnas.org/content/104/47/18871.abstract
Sustainable and efficient biohydrogen production via electrohydrogenesis
Shaoan Cheng and
Bruce E. Logan*
+Author Affiliations
Department of Civil and Environmental Engineering, Pennsylvania State University, University Park, PA 16802
Edited by James M. Tiedje, Michigan State University, East Lansing, MI, and approved September 17, 2007 (received for review July 9, 2007)
Abstract
Hydrogen gas has tremendous potential as an environmentally acceptable energy carrier for vehicles, but most hydrogen is generated from nonrenewable fossil fuels such as natural gas. Here, we show that efficient and sustainable hydrogen production is possible from any type of biodegradable organic matter by electrohydrogenesis. In this process, protons and electrons released by exoelectrogenic bacteria in specially designed reactors (based on modifying microbial fuel cells) are catalyzed to form hydrogen gas through the addition of a small voltage to the circuit. By improving the materials and reactor architecture, hydrogen gas was produced at yields of 2.01–3.95 mol/mol (50–99% of the theoretical maximum) at applied voltages of 0.2 to 0.8 V using acetic acid, a typical dead-end product of glucose or cellulose fermentation. At an applied voltage of 0.6 V, the overall energy efficiency of the process was 288% based solely on electricity applied, and 82% when the heat of combustion of acetic acid was included in the energy balance, at a gas production rate of 1.1 m3 of H2 per cubic meter of reactor per day. Direct high-yield hydrogen gas production was further demonstrated by using glucose, several volatile acids (acetic, butyric, lactic, propionic, and valeric), and cellulose at maximum stoichiometric yields of 54–91% and overall energy efficiencies of 64–82%. This electrohydrogenic process thus provides a highly efficient route for producing hydrogen gas from renewable and carbon-neutral biomass resources.
biofilms
cellulose
electron transport
hydrogen
microbial fuel cells
Footnotes
*To whom correspondence should be addressed. E-mail: blogan@psu.edu
Author contributions: S.C. and B.E.L. designed research; S.C. performed research; S.C. analyzed data; and S.C. and B.E.L. wrote the paper.
The authors declare no conflict of interest.
This article is a PNAS Direct Submission.