Enrichment of Electrochemically Active Bacteria Using a Three-Electrode Electrochemical Cell
2007
Yoon, S.M. (University of Konkuk, Seoul, Republic of Korea) | Choi, C.H. (University of Konkuk, Seoul, Republic of Korea) | Kim, M.A. (Pusan National University, Busan, Republic of Korea) | Hyun, M.S. (Korea Biosystems Co., Anyang, Republic of Korea) | Shin, S.H. (University of Konkuk, Seoul, Republic of Korea) | Yi, D.H. (University of Konkuk, Seoul, Republic of Korea) | Kim, H.J. (University of Konkuk, Seoul, Republic of Korea), E-mail: [email protected]
Electrochemically active bacteria were successfully enriched in an electrochemical cell using a positively poised working electrode. The positively poised working electrode (+0.7 V vs. Ag/AgCl) was used as an electron acceptor for enrichment and growth of electrochemically active bacteria. When activated sludge and synthetic wastewater were fed to the electrochemical cell, a gradual increase in amperometric current was observed. After a period of time in which the amperometric current was stabilized (generally 8 days), linear correlations between the amperometric signals from the electrochemical cell and added BOD (biochemical oxygen demand) concentrations were established.
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