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Effect of nanowire conductive transfer on the performance of batch-microbial fuel cells

Microbial fuel cells (MFCs) are a promising technology that uses microorganisms to simultaneously generate bioelectricity while treating wastewater. To further improve the performance of the MFC, it is essential to understand and evaluate the electron transfer mechanism. However, redesigning the ele...

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Main Authors: Wang, Chin-Tsan, Lan, Tzu-Hsuan, Ubando, Aristotle T., Chong, Wen Tong, Culaba, Alvin B., Yang, Yung-Chin
Format: Article
Published: John Wiley & Sons 2022
Subjects:
TA Engineering (General). Civil engineering (General)
TJ Mechanical engineering and machinery
TP Chemical technology
Online Access:http://eprints.um.edu.my/42391/
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spelling my.um.eprints.423912023-10-05T08:04:32Z http://eprints.um.edu.my/42391/ Effect of nanowire conductive transfer on the performance of batch-microbial fuel cells Wang, Chin-Tsan Lan, Tzu-Hsuan Ubando, Aristotle T. Chong, Wen Tong Culaba, Alvin B. Yang, Yung-Chin TA Engineering (General). Civil engineering (General) TJ Mechanical engineering and machinery TP Chemical technology Microbial fuel cells (MFCs) are a promising technology that uses microorganisms to simultaneously generate bioelectricity while treating wastewater. To further improve the performance of the MFC, it is essential to understand and evaluate the electron transfer mechanism. However, redesigning the electron transfer mechanism of MFCs through an experimental approach is costly and time-consuming. Hence, in this study, a numerical modeling approach is implemented through the Nernst-Monod kinetic equation, which is validated by experimental results. A nanowire conductive transferring pathway is considered between the microorganisms and anode electrodes of a batch-type MFC. Moreover, two types of bacteria are utilized such as the Shewanella oneidensis MR-1 and Shewanella putrefacient with substrate concentrations of 0.5 M sodium lactate. The results have shown that the limiting current density of the MFC from the computational model is 1514 mA m(-2). On the other hand, the current density from the experimental approach for Shewanella oneidensis MR-1 is 497 mA m(-2) while for Shewanella putrefacient is 140 mA m(-2). The anode activation loss of 491 omega is lower than the cathode activation loss of 643 omega, which indicates the relative influence of the cathode activation loss on the bioelectricity generation of the MFC. In addition, the results revealed that the nanowire electron transfer mechanism in the anode biofilm was less affected by the concentration losses. This then indicates that the physical mechanism of the nanowire electron transfer can be effectively used to investigate the batch-type MFCs. In turn, the results of this study will contribute to the development of an improved MFC. John Wiley & Sons 2022-04 Article PeerReviewed Wang, Chin-Tsan and Lan, Tzu-Hsuan and Ubando, Aristotle T. and Chong, Wen Tong and Culaba, Alvin B. and Yang, Yung-Chin (2022) Effect of nanowire conductive transfer on the performance of batch-microbial fuel cells. International Journal of Energy Research, 46 (5). pp. 6919-6928. ISSN 0363-907X, DOI https://doi.org/10.1002/er.7568 <https://doi.org/10.1002/er.7568>. 10.1002/er.7568
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic TA Engineering (General). Civil engineering (General)
TJ Mechanical engineering and machinery
TP Chemical technology
spellingShingle TA Engineering (General). Civil engineering (General)
TJ Mechanical engineering and machinery
TP Chemical technology
Wang, Chin-Tsan
Lan, Tzu-Hsuan
Ubando, Aristotle T.
Chong, Wen Tong
Culaba, Alvin B.
Yang, Yung-Chin
Effect of nanowire conductive transfer on the performance of batch-microbial fuel cells
description Microbial fuel cells (MFCs) are a promising technology that uses microorganisms to simultaneously generate bioelectricity while treating wastewater. To further improve the performance of the MFC, it is essential to understand and evaluate the electron transfer mechanism. However, redesigning the electron transfer mechanism of MFCs through an experimental approach is costly and time-consuming. Hence, in this study, a numerical modeling approach is implemented through the Nernst-Monod kinetic equation, which is validated by experimental results. A nanowire conductive transferring pathway is considered between the microorganisms and anode electrodes of a batch-type MFC. Moreover, two types of bacteria are utilized such as the Shewanella oneidensis MR-1 and Shewanella putrefacient with substrate concentrations of 0.5 M sodium lactate. The results have shown that the limiting current density of the MFC from the computational model is 1514 mA m(-2). On the other hand, the current density from the experimental approach for Shewanella oneidensis MR-1 is 497 mA m(-2) while for Shewanella putrefacient is 140 mA m(-2). The anode activation loss of 491 omega is lower than the cathode activation loss of 643 omega, which indicates the relative influence of the cathode activation loss on the bioelectricity generation of the MFC. In addition, the results revealed that the nanowire electron transfer mechanism in the anode biofilm was less affected by the concentration losses. This then indicates that the physical mechanism of the nanowire electron transfer can be effectively used to investigate the batch-type MFCs. In turn, the results of this study will contribute to the development of an improved MFC.
format Article
author Wang, Chin-Tsan
Lan, Tzu-Hsuan
Ubando, Aristotle T.
Chong, Wen Tong
Culaba, Alvin B.
Yang, Yung-Chin
author_facet Wang, Chin-Tsan
Lan, Tzu-Hsuan
Ubando, Aristotle T.
Chong, Wen Tong
Culaba, Alvin B.
Yang, Yung-Chin
author_sort Wang, Chin-Tsan
title Effect of nanowire conductive transfer on the performance of batch-microbial fuel cells
title_short Effect of nanowire conductive transfer on the performance of batch-microbial fuel cells
title_full Effect of nanowire conductive transfer on the performance of batch-microbial fuel cells
title_fullStr Effect of nanowire conductive transfer on the performance of batch-microbial fuel cells
title_full_unstemmed Effect of nanowire conductive transfer on the performance of batch-microbial fuel cells
title_sort effect of nanowire conductive transfer on the performance of batch-microbial fuel cells
publisher John Wiley & Sons
publishDate 2022
url http://eprints.um.edu.my/42391/
_version_ 1781704637150134272
score 13.211869

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