Energy generation in a Microbial Fuel Cell using anaerobic sludge from a wastewater treatment plant
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Scientia Agrícola (Online) |
Texto Completo: | https://www.revistas.usp.br/sa/article/view/119294 |
Resumo: | In microbial fuel cells (MFCs), the oxidation of organic compounds catalyzed by microorganisms (anode) generates electricity via electron transfer to an external circuit that acts as an electron acceptor (cathode). Microbial fuel cells differ in terms of the microorganisms employed and the nature of the oxidized organic compound. In this study, a consortium of anaerobic microorganisms helped to treat the secondary sludge obtained from a sewage treatment plant. The microorganisms were grown in a 250 mL bioreactor containing a carbon cloth. The reactor was fed with media containing acetate (as the carbon source) for 48 days. Concomitantly, the electrochemical data were measured with the aid of a digital multimeter and data acquisition system. At the beginning of the MFC operation, power density was low, probably due to slow microorganism growth and adhesion. The power density increased from the 15th day of operation, reaching a value of 13.5 μW cm–2 after ca. 24 days of operation, and remained stable until the end of the process. Compared with data in the literature, this power density value is promising; improvements in the MFC design and operation could increase this value even further. The system investigated herein employed excess sludge as a biocatalyst in an MFC. This opens up the possibility of using organic acids and/or carbohydrate-rich effluents to feed MFCs, and thereby provide simultaneous effluent treatment and energy generation. |
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Energy generation in a Microbial Fuel Cell using anaerobic sludge from a wastewater treatment plant In microbial fuel cells (MFCs), the oxidation of organic compounds catalyzed by microorganisms (anode) generates electricity via electron transfer to an external circuit that acts as an electron acceptor (cathode). Microbial fuel cells differ in terms of the microorganisms employed and the nature of the oxidized organic compound. In this study, a consortium of anaerobic microorganisms helped to treat the secondary sludge obtained from a sewage treatment plant. The microorganisms were grown in a 250 mL bioreactor containing a carbon cloth. The reactor was fed with media containing acetate (as the carbon source) for 48 days. Concomitantly, the electrochemical data were measured with the aid of a digital multimeter and data acquisition system. At the beginning of the MFC operation, power density was low, probably due to slow microorganism growth and adhesion. The power density increased from the 15th day of operation, reaching a value of 13.5 μW cm–2 after ca. 24 days of operation, and remained stable until the end of the process. Compared with data in the literature, this power density value is promising; improvements in the MFC design and operation could increase this value even further. The system investigated herein employed excess sludge as a biocatalyst in an MFC. This opens up the possibility of using organic acids and/or carbohydrate-rich effluents to feed MFCs, and thereby provide simultaneous effluent treatment and energy generation. Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz2016-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/sa/article/view/11929410.1590/0103-9016-2015-0194Scientia Agricola; v. 73 n. 5 (2016); 424-428Scientia Agricola; Vol. 73 Núm. 5 (2016); 424-428Scientia Agricola; Vol. 73 No. 5 (2016); 424-4281678-992X0103-9016reponame:Scientia Agrícola (Online)instname:Universidade de São Paulo (USP)instacron:USPenghttps://www.revistas.usp.br/sa/article/view/119294/116671Copyright (c) 2016 Scientia Agricolainfo:eu-repo/semantics/openAccessPassos, Vinicius FabianoAquino Neto, SidneyAndrade, Adalgisa Rodrigues deReginatto, Valeria2016-08-18T15:46:21Zoai:revistas.usp.br:article/119294Revistahttp://revistas.usp.br/sa/indexPUBhttps://old.scielo.br/oai/scielo-oai.phpscientia@usp.br||alleoni@usp.br1678-992X0103-9016opendoar:2016-08-18T15:46:21Scientia Agrícola (Online) - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Energy generation in a Microbial Fuel Cell using anaerobic sludge from a wastewater treatment plant |
title |
Energy generation in a Microbial Fuel Cell using anaerobic sludge from a wastewater treatment plant |
spellingShingle |
Energy generation in a Microbial Fuel Cell using anaerobic sludge from a wastewater treatment plant Passos, Vinicius Fabiano |
title_short |
Energy generation in a Microbial Fuel Cell using anaerobic sludge from a wastewater treatment plant |
title_full |
Energy generation in a Microbial Fuel Cell using anaerobic sludge from a wastewater treatment plant |
title_fullStr |
Energy generation in a Microbial Fuel Cell using anaerobic sludge from a wastewater treatment plant |
title_full_unstemmed |
Energy generation in a Microbial Fuel Cell using anaerobic sludge from a wastewater treatment plant |
title_sort |
Energy generation in a Microbial Fuel Cell using anaerobic sludge from a wastewater treatment plant |
author |
Passos, Vinicius Fabiano |
author_facet |
Passos, Vinicius Fabiano Aquino Neto, Sidney Andrade, Adalgisa Rodrigues de Reginatto, Valeria |
author_role |
author |
author2 |
Aquino Neto, Sidney Andrade, Adalgisa Rodrigues de Reginatto, Valeria |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Passos, Vinicius Fabiano Aquino Neto, Sidney Andrade, Adalgisa Rodrigues de Reginatto, Valeria |
description |
In microbial fuel cells (MFCs), the oxidation of organic compounds catalyzed by microorganisms (anode) generates electricity via electron transfer to an external circuit that acts as an electron acceptor (cathode). Microbial fuel cells differ in terms of the microorganisms employed and the nature of the oxidized organic compound. In this study, a consortium of anaerobic microorganisms helped to treat the secondary sludge obtained from a sewage treatment plant. The microorganisms were grown in a 250 mL bioreactor containing a carbon cloth. The reactor was fed with media containing acetate (as the carbon source) for 48 days. Concomitantly, the electrochemical data were measured with the aid of a digital multimeter and data acquisition system. At the beginning of the MFC operation, power density was low, probably due to slow microorganism growth and adhesion. The power density increased from the 15th day of operation, reaching a value of 13.5 μW cm–2 after ca. 24 days of operation, and remained stable until the end of the process. Compared with data in the literature, this power density value is promising; improvements in the MFC design and operation could increase this value even further. The system investigated herein employed excess sludge as a biocatalyst in an MFC. This opens up the possibility of using organic acids and/or carbohydrate-rich effluents to feed MFCs, and thereby provide simultaneous effluent treatment and energy generation. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-10-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://www.revistas.usp.br/sa/article/view/119294 10.1590/0103-9016-2015-0194 |
url |
https://www.revistas.usp.br/sa/article/view/119294 |
identifier_str_mv |
10.1590/0103-9016-2015-0194 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://www.revistas.usp.br/sa/article/view/119294/116671 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2016 Scientia Agricola info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2016 Scientia Agricola |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz |
publisher.none.fl_str_mv |
Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz |
dc.source.none.fl_str_mv |
Scientia Agricola; v. 73 n. 5 (2016); 424-428 Scientia Agricola; Vol. 73 Núm. 5 (2016); 424-428 Scientia Agricola; Vol. 73 No. 5 (2016); 424-428 1678-992X 0103-9016 reponame:Scientia Agrícola (Online) instname:Universidade de São Paulo (USP) instacron:USP |
instname_str |
Universidade de São Paulo (USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Scientia Agrícola (Online) |
collection |
Scientia Agrícola (Online) |
repository.name.fl_str_mv |
Scientia Agrícola (Online) - Universidade de São Paulo (USP) |
repository.mail.fl_str_mv |
scientia@usp.br||alleoni@usp.br |
_version_ |
1800222792877080576 |