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Energy recovery from winery wastewater using a dual chamber microbial fuel cell
Author(s) -
Penteado Eduardo D,
FernandezMarchante Carmen M,
Zaiat Marcelo,
Cañizares Pablo,
Gonzalez Ernesto R,
Rodrigo Manuel AR
Publication year - 2016
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.4771
Subject(s) - winery , microbial fuel cell , effluent , wastewater , environmental science , nutrient , phosphorus , pulp and paper industry , sewage treatment , nitrogen , environmental engineering , waste management , chemistry , electricity generation , engineering , food science , wine , power (physics) , organic chemistry , physics , quantum mechanics
BACKGROUND Microbial fuel cells ( MFCs ) can treat agro‐industrial wastewater, but only a few studies have reported the treatment of winery waste and much work is needed in order to develop this interesting application of MFC technology, in particular in evaluating how the unfavorable COD /N and COD /P ratios may affect the MFC performance. In this work, a dual chamber MFC was used to treat real effluents from wine processing factories. RESULTS The MFC was not efficient in terms of COD removal, even when nutrients concentration was increased and daily removals which oscillated around 1000 mg L ‐1 d ‐1 were observed during the complete experimental period, with COD removals around 17%. Increases in the phosphorus and nitrogen concentrations positively influenced the production of electricity. By increasing the concentration of phosphorus and nitrogen, Coulombic efficiency was increased from 2% to almost 15%, and maximum power density from 105 to 465 mW m ‐2 . CONCLUSIONS Results demonstrate that electricity can be produced efficiently and that the unbalanced nutrients/ COD ratio is a major challenge in the treatment of winery wastewater, in spite of the very high organic load contained in this type of wastewater. © 2015 Society of Chemical Industry