Enzymatic oxidation of aqueous pentachlorophenol

被引：17

作者：

Kim, E. Y. ^{[1
]}

Chae, H. J.

Chu, K. H.

机构：

[1] Univ Seoul, Dept Chem Engn, Seoul 130743, South Korea

[2] Hoseo Univ, Dept Food & Biotechnol, Asan 336795, South Korea

[3] Hoseo Univ, Dept Innovat Ind Technol, Asan 336795, South Korea

[4] Honeywell Proc Solut, Singapore 486073, Singapore

来源：

JOURNAL OF ENVIRONMENTAL SCIENCES | 2007年 / 19卷 / 09期

关键词：

biocatalysis; horseradish peroxidase; pentachlorophenol; surfactant;

D O I：

10.1016/S1001-0742(07)60168-5

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The influence of the nonionic surfactant Tween 80 on pentachlorophenol (PCP) oxidation catalyzed by horseradish peroxidase was studied. The surfactant was tested at concentrations below and above its critical micelle concentration (CMC). Enhancement of PCP removal was observed at sub-CMCs. The presence of Tween 80 in the reaction mixture reduced enzyme inactivation which occurred through a combination of free radical attack and sorption by precipitated products. A simple first-order model was able to simulate time profiles for enzyme inactivation in the presence or absence of Tween 80. At supra-CMCs, the surfactant caused noticeable reductions in PCP removal, presumably through micelle partitioning of PCP which precluded the hydrophobic PCP molecule from interacting with the enzyme.

引用

页码：1032 / 1036

页数：5

共 28 条

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