Influence of sludge age on the performance of MFC treating winery wastewater

Author(s)

Penteado, Eduardo D. ^[1] ; Maria Fernandez-Marchante, Carmen ^[2] ; Zaiat, Marcelo ^[1] ; Canizares, Pablo ^[2] ; Gonzalez, Ernesto Rafael ^[3] ; Andres Rodrigo, Manuel ^[2]

Affiliation

^[1] Univ Sao Paulo, Lab Proc Biol, Ctr Pesquisa Desenvolvimento & Inovacao Engn Ambi, Escola Engn Sao Carlos, Engn Ambiental Bloco 4-F, Av Joao Dagnone 1100, BR-13563120 Sao Carlos, SP - Brazil

^[2] Univ Castilla La Mancha, Dept Chem Engn, Enrique Costa Bldg, Av Camilo Jose Cela 12, E-13071 Ciudad Real - Spain

^[3] Univ Sao Paulo, Dept Quim Fis, Inst Quim Sao Carlos, Ave Trabalhador Sao Carlense 400, BR-13566590 Sao Carlos, SP - Brazil

• Document type: Journal article
• Source: Chemosphere; v. 151, p. 163-170, MAY 2016.
• Web of Science Citations: 15

Abstract

The objective of this paper was to determine the influence of sludge age on microbial fuel cell (MFC) performance for generating electricity and removing organic matter from winery wastewater. Six Solid Retention Times (SRT) were used: 1.2, 1.4, 1.8, 2.3, 3.5 and 7.0 d. Results demonstrate that the electricity generation increases by decreasing the SRT, selecting electrogenic microorganisms, once the specific organic loading rate (SOLR) increased and the competition for substrate was reduced. Decreasing the SRT, coulombic efficiency can be increased from 3.4% to almost 42.2% and maximum power density from 58 to 890 mW m(-2). However the SRT did not influence on organic matter removal in biological treatment, because only a small part of COD was removed oscillating around 600 mg L-1 d(-1) and it was very similar at all SRT studied. (C) 2016 Elsevier Ltd. All rights reserved. (AU)

• FAPESP's process: 09/15984-0 - Bioenergy production from wastewaters and environmental fitting of liquid and solid wastes generated
• Grantee: Marcelo Zaiat
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 14/07904-5 - Winery wastewater treatment in microbial fuel cell
• Grantee: Eduardo Dellosso Penteado
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• FAPESP's process: 11/23026-0 - Wastewater treatment in microbial fuel cell and direct electric power generation: fundaments and application
• Grantee: Eduardo Dellosso Penteado
• Support Opportunities: Scholarships in Brazil - Doctorate