Ozonation of tannery effluent for removal of cod and color

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 ex...

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Bibliographic Details
Published in:Journal of hazardous materials 2009-07, Vol.166 (1), p.150-154
Main Authors: Preethi, V., Parama Kalyani, K.S., Iyappan, K., Srinivasakannan, C., Balasubramaniam, N., Vedaraman, N.
Format: Article
Language:English
Subjects:
Advanced oxidation
Applied sciences
Bio-degradability index
Chemical engineering
COD/color removal
Color
Exact sciences and technology
Hydrogen-Ion Concentration
Industrial Waste - prevention & control
Ozonation
Ozone - chemistry
Pollution
Reactors
Tannery effluent
Tanning
Water Pollutants, Chemical - chemistry
Water Purification - methods
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Summary: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.
ISSN:0304-3894
1873-3336
DOI:10.1016/j.jhazmat.2008.11.035