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Performance of Electrochemical Oxidation in Treating Textile Industry Wastewater by Graphite Electrode


Affiliations
1 School of Environmental and Natural Resource Sciences, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
 

This study was conducted to investigate the optimization and reduction of the toxicity level of the textile industry wastewater using electrochemical oxidation. We assessed the effect of current density and pH and found that the maximum removal of COD and colour was at the current density of 0.28A/cm2 and at a pH of 5. The performance of graphite electrode for COD removal was also reached within 120th minute at 2.5M of NaCl concentration. The biodegradability was improved because ratio of BOD5/COD was increased by 94.46% from 0.015 to 0.271 and the toxicity level was successfully reduced from 1.195% to 0.129%. It was observed that the removal of oil and grease can be up to 82.02%. It can be concluded that the graphite electrode is effective for treating textile wastewater.

Keywords

Graphite Electrode, Electrochemical Oxidation, Biodegradability, (BOD5/COD), Textile Wastewater.
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  • Performance of Electrochemical Oxidation in Treating Textile Industry Wastewater by Graphite Electrode

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Authors

Devagi Subramaniam
School of Environmental and Natural Resource Sciences, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
Azhar A. Halim
School of Environmental and Natural Resource Sciences, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
Marlia M. Hanafiah
School of Environmental and Natural Resource Sciences, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia

Abstract


This study was conducted to investigate the optimization and reduction of the toxicity level of the textile industry wastewater using electrochemical oxidation. We assessed the effect of current density and pH and found that the maximum removal of COD and colour was at the current density of 0.28A/cm2 and at a pH of 5. The performance of graphite electrode for COD removal was also reached within 120th minute at 2.5M of NaCl concentration. The biodegradability was improved because ratio of BOD5/COD was increased by 94.46% from 0.015 to 0.271 and the toxicity level was successfully reduced from 1.195% to 0.129%. It was observed that the removal of oil and grease can be up to 82.02%. It can be concluded that the graphite electrode is effective for treating textile wastewater.

Keywords


Graphite Electrode, Electrochemical Oxidation, Biodegradability, (BOD5/COD), Textile Wastewater.

References