Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/7243
Título: Bioelectrochemically-assisted reductive dechlorination of 1,2-dichloroethane by a Dehalococcoides-enriched microbial culture
Autor: Leitão, Patrícia
Rossetti, Simona
Nouws, Henri P.A.
Danko, Anthony S.
Majone, Mauro
Aulenta, Federico
Palavras-chave: Bioelectrochemical dechlorination
1,2-Dichloroethane
Reductive dechlorination
Microbial biocathode
Data: Nov-2015
Editora: Elsevier
Relatório da Série N.º: Bioresource Technology;Vol. 195
Resumo: The aim of this study was to verify the possibility to use a polarized graphite electrode as an electron donor for the reductive dechlorination of 1,2-dichloroethane, an ubiquitous groundwater contaminant. The rate of 1,2-DCA dechlorination almost linearly increased by decreasing the set cathode potential over a broad range of set cathode potentials (i.e., from −300 mV to −900 mV vs. the standard hydrogen electrode). This process was primarily dependent on electrolytic H2 generation. On the other hand, reductive dechlorination proceeded (although quite slowly) with a very high Coulombic efficiency (near 70%) at a set cathode potential of −300 mV, where no H2 production occurred. Under this condition, reductive dechlorination was likely driven by direct electron uptake from the surface of the polarized electrode. Taken as a whole, this study further extends the range of chlorinated contaminants which can be treated with bioelectrochemical systems.
URI: http://hdl.handle.net/10400.22/7243
DOI: 10.1016/j.biortech.2015.06.027
Versão do Editor: http://www.sciencedirect.com/science/article/pii/S0960852415008135
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