Green approach for wastewater treatment-degradation and mineralization of aqueous organic pollutants by discharge plasma

Reddy, P M K and Ch, Subrahmanyam (2012) Green approach for wastewater treatment-degradation and mineralization of aqueous organic pollutants by discharge plasma. Industrial and Engineering Chemistry Research, 51 (34). pp. 11097-11103. ISSN 0888-5885

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Abstract

A dielectric barrier discharge reactor was designed and tested for the degradation of a model aqueous pollutant crystal violet (CV). The specific advantage of the present configuration is the effective utilization of reactive species generated in the discharge plasma. The reactive species formed in the discharge, particularly the OH - radicals, may cause strong oxidizing effects in the degradation of CV. Mineralization of the dye was confirmed by TOC analyzer and infrared gas analyzer. It was observed that both degradation efficiency and TOC removal increased with increasing the input energy; however, the energy yield decreased. The highest energy yield achieved was 86.3 (g/kWh). Formation of hydrogen peroxide was quantified and addition of Fe 2+ increased the performance of the reactor. The dye degradation followed first-order kinetics

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IITH Creators:

IITH Creators	ORCiD
Ch, Subrahmanyam	https://orcid.org/0000-0002-2643-3854

Item Type:

Article

Uncontrolled Keywords:

Aqueous organic pollutants; Crystal violet; Degradation efficiency; Dielectric barrier discharge reactors; Discharge plasma; Dye degradation; Energy yields; First order kinetics; Infrared gas analyzers; Input energy; Oxidizing effects; Reactive species; TOC removal

Subjects:

?? sub5.8 ??

Divisions:

Department of Chemistry

Depositing User:

Team Library

Date Deposited:

11 Nov 2014 04:15

Last Modified:

04 Dec 2017 06:48

URI:

http://raiithold.iith.ac.in/id/eprint/689