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Electrochemical Treatment of Reactive Black 5 Textile Wastewater: Optimization, Kinetics, and Disposal Study

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Abstract:

ABSTRACT: 

This research reports treatment of textile wastewater containing Reactive Black 5 (RB5) and other industrial constituents which are found in textile industry effluent, by the electrochemical treatment method using aluminum electrodes. Initial pH, current density (J), and electrolysis time (t) were selected as operational variables to observe the effects on chemical oxygen demand (COD) removal efficiency (Y 1), dye removal efficiency (Y 2), and specific energy consumed (Y 3) (kWh/kg of COD removed). A response surface methodology (RSM) with full factorial central composite design (CCD) was used for designing and optimizing responses. To optimize the multiple responses, multi-response optimization with a desirability function were utilized for maximizing Y 1 and Y 2, and simultaneously minimizing Y 3. To address issues of treated wastewater disposal, aluminum mass balance was performed. Electrocoagulation with subsequent adsorption, electrofloatation, and electro-oxidation were found to be the mechanism for removal of the pollutants.

Keywords: COD removal; Electrochemical treatment; dye removal; specific energy consumption; textile wastewater

Document Type: Research Article

DOI: https://doi.org/10.2175/106143013X13807328848414

Publication date: 2013-12-01

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  • Water Environment Research® (WER®) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year.

    Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
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