文献类型：期刊文献

中文题名：白腐菌降解氯代酚类化合物的特性研究

英文题名：Characters of Biodegradation of Chlorophenols by White Rot Fungus

作者：周敬红[1];赵庆祥[1]

机构：[1]华东理工大学资源与环境工程学院,上海200237

年份：2005

卷号：31

期号：4

起止页码：471

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;EI(收录号：2005389375482);Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金项目(20077007)

语种：中文

中文关键词：白腐菌;氯代酚化合物;胞外酶;胞内酶;动力学

外文关键词：white-rot fungus ; chlorophenols ; extracellular enzymes ; intracellular enzymes ; kinetics

摘要：研究了Mn2+对白腐菌(Phanerochanetechrysosporium)产生的过氧化物酶(MnP和LiP)活力的影响及胞内外酶在氯代酚化合物降解过程中的作用。结果表明Mn2+对MnP和LiP的活力有显著影响;白腐菌对相对分子质量低的有机化合物的降解主要在细胞内依靠胞内酶的作用进行,而胞外酶加快了降解速率;两种胞外酶MnP和LiP在降解过程中所起的作用不同,MnP起主要作用,LiP起次要作用。白腐菌对酚类化合物的基质亲和性较活性污泥低,适宜于高浓有机废水的预处理;白腐菌对毒性的忍受能力与活性污泥微生物相似,但处理方式和条件的改变可以提高其毒性忍受能力。
The paper presents the effects of Mn^2＋ on white rot fungus, Phanerochaete chrysosporium,particularly in its production of the extracellular enzymes, lignin peroxidases （LIP） and manganese peroxidases （MnP） in the biodegradation of chlorophenols. The presence of Mn^2＋ resultes in more production of MnP and less production of LiP. Degradation of low molecular weight chlorophenols by white rot fungus takes place mainly inside the cells by intracellular enzymes, and the overall degradation rates are increased by the fungus enzymes. The presence of Mn^2＋ enhances the observed degradation rates, suggesting that MnP plays a more important role than LiP in the degradation of chlorophenols. Relative to activated sludge-mixed liquors, the white rot fungus has a much lower affinity to chlorophenols, making it ideal for pretreatment of wastewaters containing high concentrations of such compounds. The toxicity tolerance of white rot fungus, which is similar to that of the activated sludge, may be improved when a more appropriate treatment process and/or more optimum treatment conditions are employed.