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Journal of Zhejiang University SCIENCE A 2010 Vol.11 No.5 P.356-362


Catalytic dechlorination and detoxification of 1-(2-chlorophenyl) ethanol by Pd/Fe

Author(s):  Hong-yi Zhou, Shang-chen Wang, G. Daniel Sheng

Affiliation(s):  College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310032, China

Corresponding email(s):   zhouhy@zjut.edu.cn

Key Words:  1-(2-chlorophenyl) ethanol (CPE), Pd/Fe, Catalytic reductive dechlorination, Detoxification, 1-phenyl ethanol (PE)

Hong-yi Zhou, Shang-chen Wang, G. Daniel Sheng. Catalytic dechlorination and detoxification of 1-(2-chlorophenyl) ethanol by Pd/Fe[J]. Journal of Zhejiang University Science A, 2010, 11(5): 356-362.

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author="Hong-yi Zhou, Shang-chen Wang, G. Daniel Sheng",
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%0 Journal Article
%T Catalytic dechlorination and detoxification of 1-(2-chlorophenyl) ethanol by Pd/Fe
%A Hong-yi Zhou
%A Shang-chen Wang
%A G. Daniel Sheng
%J Journal of Zhejiang University SCIENCE A
%V 11
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%@ 1673-565X
%D 2010
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A0900469

T1 - Catalytic dechlorination and detoxification of 1-(2-chlorophenyl) ethanol by Pd/Fe
A1 - Hong-yi Zhou
A1 - Shang-chen Wang
A1 - G. Daniel Sheng
J0 - Journal of Zhejiang University Science A
VL - 11
IS - 5
SP - 356
EP - 362
%@ 1673-565X
Y1 - 2010
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A0900469

1-(2-chlorophenyl) ethanol (CPE) is of health and environmental concern due to its toxicity and its use as an intermediate in pharmaceutical manufacturing. The current work deals with the catalytic reductive dechlorination and detoxification of CPE by pd/Fe bimetal. CPE was effectively dechlorinated to 1-phenyl ethanol (PE) accompanied by the equivalent release of chloride. The extent of CPE dechlorination increased with temperature, Fe dosage and Pd loading. A decrease in solution pH increased CPE dechlorination, resulting presumably from an increase in hydrogen production. Under the specific conditions of 20 g/L pd/Fe, 0.10% Pd (w/w) and initial pH 5–6, the CPE dechlorination was completed within 145 min. The dechlorination followed a pseudo-first-order kinetics with an activation energy of 56.7 kJ/mol. The results of toxicity testing showed that CPE was very toxic to Chlorella, whereas PE showed little toxicity. The toxicity of the reaction solution declined gradually and the promoting effects on Chlorella intensified consequently with the dechlorination process. Thus, the reductive dechlorination of CPE to PE by pd/Fe was a detoxification process. It may be used to effectively reduce the toxicological effects of CPE-contaminated wastewater, thereby enhancing the performance of subsequent biological processes in wastewater treatment.

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