Bioelectro-Claus processes using MFC technology: Influence of co-substrate. (August 2015)

• Record Type: Journal Article
• Authors: Raschitor, A.; Soreanu, G.; Fernandez-Marchante, C.M.; Lobato, J.; Cañizares, P.; Cretescu, I.; Rodrigo, M.A.
• Is Part Of: Bioresource technology. Volume 189(2015)
• Page Start: 94
• Page End: 98
• Publication Date: 2015-08
• Subjects: Microbial fuel cell -- Sulphide -- Bioelectro-Claus -- Sulphur -- Sulphate; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2015.03.115
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: Sulphide can be efficiently removed from wastewater using microbial fuel cell. Maximum power density of 150 mW m −2 can be attained. COD is removed simultaneously with sulphide oxidation. Co-substrate influences on speciation and rate but not on electricity production. Abstract: This work is focused on the removal of sulphide from wastewater using a two chamber microbial fuel cell, seeded with activated sludge and operated in semi-continuous mode. Two co-substrates were used in order to provide the system for carbon and nutrient source: actual urban wastewater and synthetic wastewater. Results show that sulphide is efficiency depleted (removals over 94%) and that electricity is efficiently produced (maximum power density is 150 mW m −2 ) meanwhile COD is also oxidised (removals higher than 60%). Sulphur and sulphate are obtained as the final products of the oxidation and final speciation depends on the type of co-substrate used. The start-up of the system is very rapid and production of electricity and polarisation curves do not depend on the co-substrate.