| Carbon nanotube powders as electrode modifier to enhance the activity of anodic biofilm in microbial fuel cells. | |
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MedLine Citation:
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PMID: 21190836 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Carbon nanotube (CNT) is a promising electrode material and has been used as an anode modifier in microbial fuel cells (MFCs). In this study, a new method of simultaneously adding CNT powders and Geobacter sulfurreducens into the anode chamber of a MFC was used, aiming to form a composite biofilm on the anode. The performance of MFCs such as startup time and steady-state power generation was investigated under conditions of different CNT powders dosages. Results showed that both the startup time and the anodic resistance were reduced. The optimal dosage of CNT powders pre-treated by acid was 4mg/mL for the anode chamber with an effective volume of 25mL. The anodic resistance and output voltage of the MFC with CNT powders addition were maintained around 180Ω and 650mV during 40 days operation, while those of the MFC without CNT powders addition increased from 250Ω to 540Ω and decreased from 630mV to 540mV, respectively, demonstrating that adding CNT powders helped stabilize the anodic resistance, thus the internal resistance and power generation during long-term operation. Based on cyclic voltammogram, the electrochemical activity of anodic biofilm was enhanced by adding CNT powders, though no significant increase of the biomass in anodic biofilm was detected by phospholipids analysis. There was no remarkable change of ohmic resistance with an addition of CNT powders revealed by current interrupt method, which indicated that the rate of mass transfer might be promoted by the presence of CNT powders. |
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Authors:
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Peng Liang; Huiyong Wang; Xue Xia; Xia Huang; Yinghui Mo; Xiaoxin Cao; Mingzhi Fan |
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Publication Detail:
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Type: Journal Article Date: 2010-12-10 |
Journal Detail:
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Title: Biosensors & bioelectronics Volume: 26 ISSN: 1873-4235 ISO Abbreviation: Biosens Bioelectron Publication Date: 2011 Feb |
Date Detail:
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Created Date: 2011-01-17 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9001289 Medline TA: Biosens Bioelectron Country: England |
Other Details:
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Languages: eng Pagination: 3000-4 Citation Subset: IM |
Copyright Information:
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Copyright © 2010 Elsevier B.V. All rights reserved. |
Affiliation:
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State Key Joint Laboratory of Environment Simulation and Pollution Control, Department of Environmental Science and Engineering, Tsinghua University, Haidian District, Beijing 100084, PR China. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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