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Biofilm re-vitalization using hydrodynamic shear stress for stable power generation in microbial fuel cell

Viable electroactive biofilm formation, allowing considerable conversion capacity and opportunities for extracellular electron transfer (EET) is essential for sustainable and long term stable power generation in microbial fuel cells (MFCs). However, over the time, the anodic biofilm can be particula...

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Main Authors: Islam, M. Amirul, Baranitharan, E., Cheng, C. K., Dubey, Bipro Nath, Khan, Maksudur R.
Format: Article
Language:English
Published: Elsevier 2019
Subjects:
QD Chemistry
TP Chemical technology
Online Access:http://umpir.ump.edu.my/id/eprint/25230/1/Biofilm%20re-vitalization%20using%20hydrodynamic%20shear%20stress%20for%20stable.pdf
http://umpir.ump.edu.my/id/eprint/25230/
https://doi.org/10.1016/j.jelechem.2019.05.013
https://doi.org/10.1016/j.jelechem.2019.05.013
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spelling my.ump.umpir.252302019-10-25T01:54:02Z http://umpir.ump.edu.my/id/eprint/25230/ Biofilm re-vitalization using hydrodynamic shear stress for stable power generation in microbial fuel cell Islam, M. Amirul Baranitharan, E. Cheng, C. K. Dubey, Bipro Nath Khan, Maksudur R. QD Chemistry TP Chemical technology Viable electroactive biofilm formation, allowing considerable conversion capacity and opportunities for extracellular electron transfer (EET) is essential for sustainable and long term stable power generation in microbial fuel cells (MFCs). However, over the time, the anodic biofilm can be particularly detrimental for electrogenesis due to the accumulation of more dead cells and that increases the charge transfer resistance as well as reduces the electrocatalytic efficiency. In this study, flow induced shear stresses (4.38, 9.34 and 14.92 mPa) were employed to revitalize the biofilm by removing the inert biomass for the maintenance of stable power in MFCs. Among them, the moderate shear stress (9.34 mPa) successfully reduced the thickness and thereby revitalized the biofilm within a short time. The field emission scanning electron microscopy (FESEM) and cell viability count analysis of the biofilms confirmed that the shear stress (9.34 mPa) reduced the dead cells accumulation in the biofilm. Moreover, this treatment significantly reduced the polarization resistance (68%) by dislodging nonconductive inert dead cells from the surface. Our results revealed that the application of shear stress could be an effective method to maintain the stable power generation by reducing the thickness and increasing the cell viability of the biofilm in the MFC. Elsevier 2019-07-01 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/25230/1/Biofilm%20re-vitalization%20using%20hydrodynamic%20shear%20stress%20for%20stable.pdf Islam, M. Amirul and Baranitharan, E. and Cheng, C. K. and Dubey, Bipro Nath and Khan, Maksudur R. (2019) Biofilm re-vitalization using hydrodynamic shear stress for stable power generation in microbial fuel cell. Journal of Electroanalytical Chemistry, 44. pp. 14-22. ISSN 1572-6657 https://doi.org/10.1016/j.jelechem.2019.05.013 https://doi.org/10.1016/j.jelechem.2019.05.013
institution Universiti Malaysia Pahang
building UMP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Pahang
content_source UMP Institutional Repository
url_provider http://umpir.ump.edu.my/
language English
topic QD Chemistry
TP Chemical technology
spellingShingle QD Chemistry
TP Chemical technology
Islam, M. Amirul
Baranitharan, E.
Cheng, C. K.
Dubey, Bipro Nath
Khan, Maksudur R.
Biofilm re-vitalization using hydrodynamic shear stress for stable power generation in microbial fuel cell
description Viable electroactive biofilm formation, allowing considerable conversion capacity and opportunities for extracellular electron transfer (EET) is essential for sustainable and long term stable power generation in microbial fuel cells (MFCs). However, over the time, the anodic biofilm can be particularly detrimental for electrogenesis due to the accumulation of more dead cells and that increases the charge transfer resistance as well as reduces the electrocatalytic efficiency. In this study, flow induced shear stresses (4.38, 9.34 and 14.92 mPa) were employed to revitalize the biofilm by removing the inert biomass for the maintenance of stable power in MFCs. Among them, the moderate shear stress (9.34 mPa) successfully reduced the thickness and thereby revitalized the biofilm within a short time. The field emission scanning electron microscopy (FESEM) and cell viability count analysis of the biofilms confirmed that the shear stress (9.34 mPa) reduced the dead cells accumulation in the biofilm. Moreover, this treatment significantly reduced the polarization resistance (68%) by dislodging nonconductive inert dead cells from the surface. Our results revealed that the application of shear stress could be an effective method to maintain the stable power generation by reducing the thickness and increasing the cell viability of the biofilm in the MFC.
format Article
author Islam, M. Amirul
Baranitharan, E.
Cheng, C. K.
Dubey, Bipro Nath
Khan, Maksudur R.
author_facet Islam, M. Amirul
Baranitharan, E.
Cheng, C. K.
Dubey, Bipro Nath
Khan, Maksudur R.
author_sort Islam, M. Amirul
title Biofilm re-vitalization using hydrodynamic shear stress for stable power generation in microbial fuel cell
title_short Biofilm re-vitalization using hydrodynamic shear stress for stable power generation in microbial fuel cell
title_full Biofilm re-vitalization using hydrodynamic shear stress for stable power generation in microbial fuel cell
title_fullStr Biofilm re-vitalization using hydrodynamic shear stress for stable power generation in microbial fuel cell
title_full_unstemmed Biofilm re-vitalization using hydrodynamic shear stress for stable power generation in microbial fuel cell
title_sort biofilm re-vitalization using hydrodynamic shear stress for stable power generation in microbial fuel cell
publisher Elsevier
publishDate 2019
url http://umpir.ump.edu.my/id/eprint/25230/1/Biofilm%20re-vitalization%20using%20hydrodynamic%20shear%20stress%20for%20stable.pdf
http://umpir.ump.edu.my/id/eprint/25230/
https://doi.org/10.1016/j.jelechem.2019.05.013
https://doi.org/10.1016/j.jelechem.2019.05.013
_version_ 1648741191135526912
score 13.211869

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