期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 43, 期 33, 页码 16240-16247出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2018.06.144
关键词
Long-term operation; CNTs; Electrochemically active biofilms; Microbial fuel cell
资金
- National Natural Science Foundation of China [21607030, 51678162]
- Natural Science Fund of Guangdong province [2016A030310351, 2016A030313693]
- Guangdong Special Support Program for Training High Level Talents, China [2015TQ01Z039]
Carbon nanotubes (CNTs) have been widely exploited to improve anodic performance, but information is needed on their long-term stability for improvement. Herein, we prepared a novel CNTs-modified graphite felt (CNTs-GF) by a simple and scalable process and evaluated its long-term performance using anaerobic sludge as inoculum. the MFC with CNTs-GF yielded a sustained enhancement of power output, increasing from 1.93 +/- 0.09 W m(-2) after 1 month to 2.10 +/- 0.05 W m(-2) after 3 months and reaching 2.00 +/- 0.10 W m(-2) after 13 month, indicating the enhancement in electricity generation by the CNTs was not declined over one year. However, the bare GF showed a declining tendency of performance during 13 months. The long-term enhancement can be explained by the facts that the CNTs-GF was beneficial to electrochemically active biofilms (EABs) growth and interacted better with EABs and increased the extracellular electron transfer. Community analysis showed an increase in Geobacter in response to CNTs modification. These results demonstrated that CNTs modification could sustain a superior long-term enhancement in MFC performance. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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