The invention relates to a combination degradation technology, and particularly relates to a process for combination degradation of polychlorinated biphenyls. According to the process, polychlorinated biphenyls in an organic-aqueous system are subjected to reductive dechlorination reaction for 1.5-4h by adding an alkaline proton absorbent under the catalysis of transition metals with hydrogen gas as the gas source, and subsequently the reaction solution of the reductive dechlorination reaction is added into a carbon-free culture medium for cultivation of candida tropicalis to result in full degradation of the polychlorinated biphenyls. The process has the advantages that the catalysis reduction efficiency of polychlorinated biphenyls is high, and the reaction conditions are simple and modest; the reactants are thoroughly degraded; the operation is easily controlled and the cost is low; and the process is economic and environment-friendly.
; 马宣宣; 刘苏静; 杨翠云
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