Enhanced power performance of an in situ sediment microbial fuel cell with steel-slag as the redox catalyst: I. electricity generation

Sustainable Energy and Fuels Volume 4 Issue 3 Page 1363-1371 published_at 2020-01-09
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Title ( eng )
Enhanced power performance of an in situ sediment microbial fuel cell with steel-slag as the redox catalyst: I. electricity generation
Creator
Kim Kyeongmin
Source Title
Sustainable Energy and Fuels
Volume 4
Issue 3
Start Page 1363
End Page 1371
Abstract
Steel-slag was added as a catalytic material of redox reaction to sediment microbial fuel cells (SMFCs) in an in situ sediment biodegradation experiment to determine its benefits in the long-term power production of the cells and to elucidate the external factors affecting power production. The steel-slag was found to consistently increase the power generated, and over a period of two years, the combination produced six times more charge than that of an SMFC alone (1549 C per day), which was superior to that of conventional SMFCs reported in the literature. After two years of electron-harvesting, the redox potential of pore water rose to the level at which hydrogen sulfide and ammonia can be oxidized. Upon investigation, rapid changes or fluctuations in power production were found to be cathode-related, for example, if it was damaged, or variations in the ambient environmental conditions, such as dissolved oxygen, algal activity, etc., affected its performance. In particular, algal activity appeared within nine days, which led to a 68% increase in the average current density during the day vs. the night.
Descriptions
アクセプト後にタイトル・アブストラクト等変更あり、著者最終稿は変更前のタイトル"In situ sediment biodegradation via a sediment microbial fuel cell and steel-slag: I. Electricity generation"
Language
eng
Resource Type journal article
Publisher
Royal Society of Chemistry
Date of Issued 2020-01-09
Rights
This is not the published version. Please cite only the published version. この論文は出版社版ではありません。引用の際には出版社版をご確認、ご利用ください。
Publish Type Author’s Original
Access Rights open access
Source Identifier
[ISSN] 2398-4902
[DOI] 10.1039/C9SE00918C
[DOI] https://doi.org/10.1039/C9SE00918C