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Ozonation of tannery effluent for removal of cod and color |
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| Authors: | V Preethi KS Parama Kalyani K Iyappan C Srinivasakannan N Balasubramaniam N Vedaraman |
| Affiliation: | 1. Department of Chemical Engineering, A.C.Tech. Campus, Anna University-Chennai, Chennai 600 025, India;2. School of Engineering, Monash University, Sunway Campus 46150, Malaysia;3. Department of Chemical Engineering, Central Leather Research Institute, Adyar, Chennai 600 041, India |
| Abstract: | Ozonation of leather dye effluent for removal of color and COD reduction covering wide range in operating parameters forms the scope of the present work. The influence of parameters such as influent pH, ozone flow rate and initial effluent concentration on ozonation efficiency has been critically examined. It has been observed from the present investigation that a maximum of COD removal efficiency of 92% has been achieved under optimum operating conditions. Further the biodegradability index of the tannery effluent has increased from an initial value of 0.18 to 0.49 during ozonation indicating favorable adaptation of ozonation as a primer to the biochemical technique to enhance the efficiency of biochemical treatment. |
| Keywords: | Ozonation Tannery effluent Advanced oxidation COD/color removal Bio-degradability index |
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