A carregar...
Publicação
Bioelectrochemically-assisted reductive dechlorination of 1,2-dichloroethane by a Dehalococcoides-enriched microbial culture
| Nome: | Descrição: | Tamanho: | Formato: | |
|---|---|---|---|---|
| 1.02 MB | Adobe PDF |
Orientador(es)
Resumo(s)
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.
Descrição
Palavras-chave
Bioelectrochemical dechlorination 1,2-Dichloroethane Reductive dechlorination Microbial biocathode
Contexto Educativo
Citação
Editora
Elsevier