Comparison of Decolorization by Kaolin Zettlitz with Common Adsorbents in Textile Wastewater

Removal of reactive dye (RED HE7BI) from textile wastewater effluents using Kaolin Zettlitz is described. Its ability for decolorization has been compared with waste newspaper, carbon active and sawdust. Parameters affecting dye uptake including contact time, reagent dosage and pH are examined. The sorption of dyes increased with increase in pH and reached maximum at 28.12% for 100mg/L initial concentration at pH 7.0. Adsorbents dosage optimized is 20g for every 50mL of dye solution. As a result Kaolin Zettllitz is a suitable system for treatment of coloured effluent and decolorization of textile wastewater.