包括固定化した嫌気性菌と好気性菌によるテトラクロロエチレン・トリクロロエチレンの回分処理 Degradation of Tetrachloroethene and Trichloroethene by Immobilized Anaerobic and Aerobic Microorganisms
Degradation of tetrachloroethene (PCE) and trichloroethene (TCE) by combining an anaerobic consortium with an aerobic bacterium was investigated. The anaerobic enrichment culture that dechlorinated high concentration of PCE to cis-1, 2-dichloroethene (cDCE) without methane production and sulfate reduction, was obtained from TCE contaminated soil. The aerobic phenol-oxidizing bacterium that degraded TCE and cDCE was isolated from leachate of a waste landfill site. Each culture retained chloroethene degrading activities after immobilization in κ-carrageenan gel beads. In a batch bioreactor containing the immobilized cells, PCE and TCE were converted to cDCE and chloride ion under anaerobic condition. After addition of phenol and oxygen (or hydrogen peroxide) to the reactor, cDCE was degraded. PCE and TCE (40-50mg·l-1) were degraded in 3 days with the bioreactor. The immobilized cells retained the degrading activities in repeated use.
- 水環境学会誌 = Journal of Japan Society on Water Environment
水環境学会誌 = Journal of Japan Society on Water Environment 22(6), 479-484, 1999-06