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Improving the extracellular electron transfer of Shewanella oneidensis MR-1 for enhanced bioelectricity production from biomass hydrolysate
Wang, Yan-Zhai1; Shen, Yu2; Gao, Lu1; Liao, Zhi-Hong1; Sun, Jian-Zhong1,3; Yong, Yang-Chun1
2017
摘要Direct electricity production from biomass hydrolysate by microbial fuel cells (MFC) holds great promise for the development of the sustainable biomass industry. Shewanella oneidensis MR-1 is one of the most extensively studied model exoelectrogens in MFC. But it is still unclear whether this model strain could generate bioelectricity from biomass or not. Here, a biomass hydrolysate MFC was constructed by using S. oneidensis MR-1 and electricity output was obtained from corn straw hydrolysate. More impressively, by promoting the extracellular electron transfer efficiency with electron shuttle addition and electrode modification using the vertically aligned polyaniline (PANI) nanowire array, the electricity output from biomass hydrolystate by S. oneidensis MR-1 was greatly improved and a high energy output was obtained, i.e., similar to 1260 mA m(-2) current output (similar to 7-fold increase over that of the control) and similar to 660 mW m(-2) power output (similar to 37-fold increase over that of the control) were achieved. This work demonstrates that S. oneidensis MR-1 has great potential in electrical energy harvesting from biomass hydrolysate, which broadens the fuel spectrum of the model exoelectrogen (S. oneidensis MR-1) inoculated MFC and also provides a new opportunity for the biomass industry.
DOI10.1039/c7ra04106c
发表期刊RSC ADVANCES
ISSN2046-2069
卷号7期号:48页码:30488-30494
通讯作者Sun, JZ (reprint author), Jiangsu Univ, Sch Environm, Biofuels Inst, 301 Xuefu Rd, Zhenjiang 212013, Jiangsu, Peoples R China. ; Sun, JZ (reprint author), Nanjing Univ Sci & Technol, Jiangsu Key Lab Chem Pollut Control & Resources R, Nanjing 210094, Jiangsu, Peoples R China.
收录类别SCI
WOS记录号WOS:000403565400072
语种英语