Anaerobic biodegradation of pentachlorophenol (PCP) in solid-liquid phase of contaminated sediment slurry

Abstract

Abstract: The study showed that after inoculating 10 g穔g^-1 anaerobic dechlorinated granular sludge (ADGS) for 31 days,the biodegradation rate of pentachlorophenol (PCP) in solid-liquid phase of contaminated sediment slurry was up to 98.9%,with an average of 8.0 mg穔g^-1穌^-1,while that of the control was only 4.4 mg穔g^-1穌^-1.As the regulation factors in slurry remediation,organic solvent,co-substrate and surfactant had different effects on PCP degradation.The addition of ethanol could enhance the desorption and degradation of PCP,the degradation rate being up to 54.3 mg穔g^-1穌^-1 within 4 days,while the addition of co-substrate and non-ionic surfactant EGME (ethylene glycol monobutyl- ether) inhibited the PCP degradation in solid- liquid phase of slurry.

Key words: Anaerobic degradation, Granular sludge, Pentachlorophenol, Solid-Liquid phase, Slurry

CLC Number:

X703.1

TANG Quan, XU Xiangyang, ZHU Youwei . Anaerobic biodegradation of pentachlorophenol (PCP) in solid-liquid phase of contaminated sediment slurry[J]. Chinese Journal of Applied Ecology, 2005, 16(4): 683-687.

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