Removal of 17β-estradiol in laccase catalyzed treatment processes 被引量：1

Removal of 17β-estradiol in laccase catalyzed treatment processes

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摘要 The removal of 17β-estradiol （E2） in laccase catalyzed oxidative coupling processes was systematically studied in this work. We focused on the influence of pH and natural organic matter （NOM） on the performance of the enzymatic treatment processes. It was found that the optimal pH for E2 removal was between 4 and 6. The removal of E2 was slightly inhibited in the presence of NOM. Enzymatic transformation of E2 was second-order in kinetics with first-order to both the concentrations of the enzyme and contaminant. Mass spectrum （MS） analysis suggested that coupling products were formed through radical-radical coupling mechanism. The results of this study demonstrated that laccase catalyzed oxidative coupling process could potentially serve as a treatment strategy to control steroid estrogens. The removal of 17β-estradiol （E2） in laccase catalyzed oxidative coupling processes was systematically studied in this work. We focused on the influence of pH and natural organic matter （NOM） on the performance of the enzymatic treatment processes. It was found that the optimal pH for E2 removal was between 4 and 6. The removal of E2 was slightly inhibited in the presence of NOM. Enzymatic transformation of E2 was second-order in kinetics with first-order to both the concentrations of the enzyme and contaminant. Mass spectrum （MS） analysis suggested that coupling products were formed through radical-radical coupling mechanism. The results of this study demonstrated that laccase catalyzed oxidative coupling process could potentially serve as a treatment strategy to control steroid estrogens.

作者 Qing XIA Deyang KONG Guoqiang LIU Qingguo HUANG Aamr ALALEWI Junhe LU

机构地区 Department of Environmental Science and Engineering Nanjing Institute of Environmental Sciences Department of Crop and Soil Sciences

出处《Frontiers of Environmental Science & Engineering》 SCIE EI CAS CSCD 2014年第3期372-378,共7页 环境科学与工程前沿（英文）

基金 This research was funded by the National Natural Science Foundation of China （Grant No. 51178224）, Jiangsu Natural Science Foundation （BIC2010443）, and the Priority Academic Program Development （PAPD） of Jiangsu Higher Education Institute. The content of the paper does not necessarily represent the views of the funding agencies.

关键词 17Β-ESTRADIOL LACCASE oxidative coupling processes KINETICS mechanisms 17β-estradiol, laccase, oxidative coupling processes, kinetics, mechanisms

分类号 O623.11 [理学—有机化学] TS192.7 [轻工技术与工程—纺织化学与染整工程]

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