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Treatment of textile dyes for color and COD removal by pretreatment with Ozonation followed by Granular Activated Carbon

Publication Date : 19/07/2015



Author(s) :

Kunal Dipak Sambrekar , M. Bhargavi.


Volume/Issue :
Volume 2
,
Issue 7
(07 - 2015)



Abstract :

The study consisted of Decolorization of textile dyes Direct yellow 12, Reactive Orange 16 and Acid Blue 7 using ozonation as Advanced Oxidation Process (AOP) in a Ozone batch reactor. In which Acid blue 7 was also subjected to Granular activated carbon (GAC) adsorption after its pretreatment with Ozonation to examine the reduction in color concentration and COD of the dye solution. The effect of Ozone contact time, initial concentration of dyes and effect of pH on the efficiency of decolorization was investigated. It was observed that increase in the initial concentration of dye, decreased decolorization. Whereas increase in the ozone contact time gave better efficiencies. Effect of pH was different for each dye, Ozonation of the textile dye solutions resulted in  considerable amount of color removal in some cases nearly 100% decolorization and above 90% of COD removal was observed when ozone pretreatment was followed by Granular Activated Carbon adsorption. 


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Treatment of textile dyes for color and COD removal by pretreatment with Ozonation followed by Granular Activated Carbon

July 18, 2015