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Alkalinity and salinity favor bioelectricity generation potential of Clostridium, Tetrathiobacter and Desulfovibrio consortium in Microbial Fuel Cells (MFC) treating sulfate-laden wastewater
Year:
2020
Source of publication :
Bioresource Technology
Authors :
Malyan, Sandeep K.
;
.
Volume :
306
Co-Authors:

Smita S.Kumar. Centre for Rural Development and Technology, Indian Institute of Technology Delhi, Hauz Khas, 10016 New Delhi, India; Department of Environmental Sciences, J.C. Bose University of Science and Technology, YMCA, Faridabad, 121006 Haryana, India;
Vivek Kumar. Centre for Rural Development and Technology, Indian Institute of Technology Delhi, Hauz Khas, 10016 New Delhi, India;
Veera Gnaneswar Gudec. Department of Civil and Environmental Engineering, Mississippi State University, Mississippi State, MS 39762, United States.
valagan Pugazhendhi. Innovative Green Product Synthesis and Renewable Environment Development Research Group, Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Viet Nam.

 

 

 

Facilitators :
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Total pages:
1
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Abstract:

ClostridiumTetrathiobacter and Desulfovibrio species are identified as suitable biocatalysts for treating organic-rich and sulfate-laden wastewater. Results from this study show that the power generation was much higher under alkaline conditions, i.e., pH of 8 when compared to neutral and acidic conditions. The effect of salinity was studied by varying the sodium chloride concentration at (1.5, 3, 4.5, 6, and 7.5 g/L NaCl) in anolyte. The highest power density of 1188 mW/m3 was produced at a sodium chloride concentration of 6 g/L in the anolyte. Results from cyclic voltammetry and linear scan voltammetry analysis suggested the direct electron transfer mechanism favored by cytb and cytc, Redox peaks observed for the biogenic synthesis of sulfite and sulfide support the complete one-step mineralization of sulfate. Bioelectrochemical behavior of the selectively enriched microbial consortium confirms its use for the treatment of wastewaters high in salinity and sulfate concentrations.

Note:
Related Files :
Bioelectricity generation
Consortium
Microbial fuel cells
Sulfate-reducing bacteria
Sulfur-oxidizing bacteria (SOB)
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More details
DOI :
https://doi.org/10.1016/j.biortech.2020.123110
Article number:
0
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
46940
Last updated date:
02/03/2022 17:27
Creation date:
22/03/2020 21:32
You may also be interested in
Scientific Publication
Alkalinity and salinity favor bioelectricity generation potential of Clostridium, Tetrathiobacter and Desulfovibrio consortium in Microbial Fuel Cells (MFC) treating sulfate-laden wastewater
306

Smita S.Kumar. Centre for Rural Development and Technology, Indian Institute of Technology Delhi, Hauz Khas, 10016 New Delhi, India; Department of Environmental Sciences, J.C. Bose University of Science and Technology, YMCA, Faridabad, 121006 Haryana, India;
Vivek Kumar. Centre for Rural Development and Technology, Indian Institute of Technology Delhi, Hauz Khas, 10016 New Delhi, India;
Veera Gnaneswar Gudec. Department of Civil and Environmental Engineering, Mississippi State University, Mississippi State, MS 39762, United States.
valagan Pugazhendhi. Innovative Green Product Synthesis and Renewable Environment Development Research Group, Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Viet Nam.

 

 

 

Alkalinity and salinity favor bioelectricity generation potential of Clostridium, Tetrathiobacter and Desulfovibrio consortium in Microbial Fuel Cells (MFC) treating sulfate-laden wastewater

ClostridiumTetrathiobacter and Desulfovibrio species are identified as suitable biocatalysts for treating organic-rich and sulfate-laden wastewater. Results from this study show that the power generation was much higher under alkaline conditions, i.e., pH of 8 when compared to neutral and acidic conditions. The effect of salinity was studied by varying the sodium chloride concentration at (1.5, 3, 4.5, 6, and 7.5 g/L NaCl) in anolyte. The highest power density of 1188 mW/m3 was produced at a sodium chloride concentration of 6 g/L in the anolyte. Results from cyclic voltammetry and linear scan voltammetry analysis suggested the direct electron transfer mechanism favored by cytb and cytc, Redox peaks observed for the biogenic synthesis of sulfite and sulfide support the complete one-step mineralization of sulfate. Bioelectrochemical behavior of the selectively enriched microbial consortium confirms its use for the treatment of wastewaters high in salinity and sulfate concentrations.

Scientific Publication
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