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Effect of mediator on decontamination of chloroaromatic compounds by using electrochemical method

Abdul Jalil, Aishah and Sundang, Murni and Tajuddin, Norhuda and Akhbar, Suffiyana and Idris, Ani and Triwahyono, Sugeng and Awang Panjang, Noor Fatimah and Tokuda, Masao (2005) Effect of mediator on decontamination of chloroaromatic compounds by using electrochemical method. In: 2nd International Conference on Chemical and Bioprocess Engineering in conjunction with 19th Symposium of Malaysian Chemical Engineers (SOMChE 2005), 8-10 December 2005, Kota Kinabalu, Sabah. (Submitted)

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Abstract

Decontamination of chloroaromatic compounds has been studied under mild conditions by a simple electrochemical reduction method in order to remove chlorine atoms completely from such compounds. Chlorobenzene was used as a model substrate to determine the optimum conditions of the dechlorination, Electrolysis of chlorobenzene in an acetonitrile solution containing tetraethylammonium perchlorate as a supporting electrolyte in a one- compartment cell fitted with a platinum cathode and a zinc anode at a constant current of 60 mA/cm2 was found to be the optimum conditions in this dechlorination. However, complete dechlorination can not be achieved by applying this conditions to dechlorinate 1,3-dichlorobenzene and 1,2,4- trichlorobenzene .Alternative method by adding naphthalene as a mediator in this system was found to solve this problem and as a result, complete dechlorination of such chloroaromatic compounds were achieved to give 100% conversion off the starting materials. This efficient and simple method could be expected and applied to dechlorinate other chloroaromatic compounds in wastewater in order to solve environmental problems.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:Chloroaromatic, dechlorination, electrolysis, reduction, mediator
Subjects:T Technology > T Technology (General)
Divisions:Chemical and Natural Resources Engineering (Formerly known)
ID Code:5245
Deposited By: Norhani Jusoh
Deposited On:07 Mar 2008 04:34
Last Modified:01 Jun 2010 15:28

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