Alteration of sediment organic matter in sediment microbial fuel cells
- Alteration of sediment organic matter in sediment microbial fuel cells
- 홍석원; 김한승; 정태학
- Microbial fuel cell; Electricity generation; Sediment organic matter; Anaerobic oxidation; Humification; *2009년도 기관고유 성과에 반영되었음.; *2009년도 개인평가에 반영되었음.
- Issue Date
- Environmental pollution
- VOL 158, NO 1, 185-191
- The alteration of physico-chemical properties of sediment organic matter (SOM) incubated under current-harvesting conditions as well as no-current producing conditions over 120 days using sediment microbial fuel cell systems was examined. The SOM was microbially oxidized under anaerobic conditions with an electrode serving as a terminal electron acceptor. It was found that SOM around the electrochemically-active electrodes became more humified, aromatic, and polydispersed, and had a higher average molecular weight, along with its partial degradation and electricity generation compared to that for the original sediment. These changes in SOM properties were analogous to those commonly observed in the early stages of the SOM diagenetic process (i.e. humification). Such a humification-like process was evidently more stimulated when electrical current was produced than no-current condition. These new findings associated with microbially-catalyzed electricity generation may present a potential for the energy-efficient remediation, monitoring, and/or management of the geo-environment.
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