Design of reaction conditions for the enhancement of microbial degradation of dyes in sequential cycles

查看全文 作　　者：Rashmi [1,2]Sanghi;Awantika [1]Dixit;Preeti [1]Verma;Sadhna [3]Puri

机构地区：[1]Facility for Ecological and Analytical Testing,302, Southern Laboratories, Institute of Technology;[2]The LNM Institute of Information Technology Jaipur;[3]Dayanand Girls College, CSJM University

出　　处：《Journal of Environmental Sciences》索引2009年第21卷第12期,共6页

基　　金：the funding agencies, Department of Science and Technology, India and International Foundation for Science Sweden, for providing the financial support to conduct the studies reported in this article 摘　　要：The present study evaluated the potential of white-rot fungal strain Coriolus versicolor to decolorize five structurally different dyes in sequential batch reactors under optimized conditions. The experiments were run continuously for seven cycles of 8 d each. High decolorizing activity was observed even during the repeated reuse of the fungus, especially when the old medium was replaced with fresh medium after every cycle. Biodegradation was the dominating factor as the fungus was able to produce the enzyme laccase mainly, to mineralize synthetic dyes. The nutrients and composition of the medium played important roles in sustaining the decolorisation potential of the fungus. Corncob was found be an easy and cheap substitute for carbon source for the fungus. Glucose consumption by the fungus was in accordance to its decolorisation activity and chemical oxygen demand (COD) reduction. 关键词：微生物降解合成染料反应条件白腐真菌循环设计更换周期反应器结构

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Design of reaction conditions for the enhancement of microbial degradation of dyes in sequential cycles

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