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DOI:	10.1371/journal.pone.0109935
论文题名:	Influence of Acidic pH on Hydrogen and Acetate Production by an Electrosynthetic Microbiome
作者:	Edward V. LaBelle; Christopher W. Marshall; Jack A. Gilbert; Harold D. May
刊名:	PLOS ONE
ISSN:	1932-6203
出版年:	2014
发表日期:	2014-10-15
卷:	9, 期:10
语种:	英语
英文关键词:	Hydrogen ; Microbiome ; Cathodes ; Formates ; Graphite ; Phosphates ; Carbon dioxide ; Electrode potentials
英文摘要:	Production of hydrogen and organic compounds by an electrosynthetic microbiome using electrodes and carbon dioxide as sole electron donor and carbon source, respectively, was examined after exposure to acidic pH (∼5). Hydrogen production by biocathodes poised at −600 mV vs. SHE increased>100-fold and acetate production ceased at acidic pH, but ∼5–15 mM (catholyte volume)/day acetate and>1,000 mM/day hydrogen were attained at pH ∼6.5 following repeated exposure to acidic pH. Cyclic voltammetry revealed a 250 mV decrease in hydrogen overpotential and a maximum current density of 12.2 mA/cm2 at −765 mV (0.065 mA/cm2 sterile control at −800 mV) by the Acetobacterium-dominated community. Supplying −800 mV to the microbiome after repeated exposure to acidic pH resulted in up to 2.6 kg/m3/day hydrogen (≈2.6 gallons gasoline equivalent), 0.7 kg/m3/day formate, and 3.1 kg/m3/day acetate ( = 4.7 kg CO2 captured).
URL:	http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0109935&type=printable
Citation statistics:
资源类型:	期刊论文
标识符:	http://119.78.100.158/handle/2HF3EXSE/18531
Appears in Collections:	过去全球变化的重建影响、适应和脆弱性科学计划与规划气候变化与战略全球变化的国际研究计划气候减缓与适应气候变化事实与影响

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journal.pone.0109935.PDF（4826KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	View Download

作者单位:

Department of Microbiology & Immunology, Marine Biomedicine & Environmental Science Center, Hollings Marine Laboratory, Medical University of South Carolina, Charleston, South Carolina, United States of America;Institute for Genomic and Systems Biology, Argonne National Laboratory, Argonne, Illinois, United States of America;Institute for Genomic and Systems Biology, Argonne National Laboratory, Argonne, Illinois, United States of America;Department of Ecology and Evolution, University of Chicago, Chicago, Illinois, United States of America;Marine Biological Laboratory, Woods Hole, Massachusetts, United States of America;College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, China;Department of Microbiology & Immunology, Marine Biomedicine & Environmental Science Center, Hollings Marine Laboratory, Medical University of South Carolina, Charleston, South Carolina, United States of America

Recommended Citation:

Edward V. LaBelle,Christopher W. Marshall,Jack A. Gilbert,et al. Influence of Acidic pH on Hydrogen and Acetate Production by an Electrosynthetic Microbiome[J]. PLOS ONE,2014-01-01,9(10)

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