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Investigators from Zhejiang University Have Reported New Data on Biosensors and Bioelectronics

May 14, 2014



By a News Reporter-Staff News Editor at Biotech Week -- Fresh data on Biotechnology are presented in a new report. According to news reporting from Hangzhou, People's Republic of China, by NewsRx journalists, research stated, "Scaling up of microbial fuel cells (MFCs) without losing power density requires a thorough understanding of the effect of hydraulic pressure on MFC performance. In this work, the performance of an activated carbon air-cathode MFC was evaluated under different hydraulic pressures."

The news correspondents obtained a quote from the research from Zhejiang University, "The MFC under 100 mmH(2)O hydraulic pressure produced a maximum power density of 1260 +/- 24 mW m(-2), while the power density decreased by 24.4% and 44.7% as the hydraulic pressure increased to 500 mmH(2)O and 2000 mmH(2)O, respectively. Notably, the performance of both the anode and the cathode had decreased under high hydraulic pressures. Electrochemical impedance spectroscopy tests of the cathode indicated that both charge transfer resistance and diffusion transfer resistance increased with the increase in hydraulic pressure. Denaturing gradient gel electrophoresis of PCR-amplified partial 16S rRNA genes demonstrated that the similarity among anodic biofilm communities under different hydraulic pressures was >= 90%, and the communities of all MFCs were dominated by Geobacter sp."

According to the news reporters, the research concluded: "These results suggested that the reduction in power output of the single chamber air-cathode MFC under high hydraulic pressures can be attributed to water flooding of the cathode and suppression the metabolism of anodic exoelectrogenic bacteria."

For more information on this research see: Effects of hydraulic pressure on the performance of single chamber air-cathode microbial fuel cells. Biosensors & Bioelectronics, 2014;56():264-270. Biosensors & Bioelectronics can be contacted at: Elsevier Advanced Technology, Oxford Fulfillment Centre The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, Oxon, England. (Elsevier - www.elsevier.com; Biosensors & Bioelectronics - www.elsevier.com/wps/product/cws_home/405913)

Our news journalists report that additional information may be obtained by contacting S.A. Cheng, Zhejiang University, Dept. of Energy Engn, State Key Lab Clean Energy, Hangzhou 310027, People's Republic of China. Additional authors for this research include W.F. Liu, J. Guo, D. Sun, B. Pan, Y.L. Ye, W.J. Ding, H.B. Huang and F.J. Li (see also Biotechnology).

Keywords for this news article include: Asia, Biotechnology, Hangzhou, People's Republic of China

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Biotech Week


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