Column Studies on Removal of Colour from Silk Filature Composite Wastewater by Using Activated Carbon Derived from Ziziphus Mauritiana

The present study deals with removal of colour from wastewater of silk filature using a low cost activated carbon prepared from Ziziphus Mauritiana shell powder of size 150Ã?Â?. The chemically activated carbon is prepared with Impregnation Ratio of 0.75 A series of column tracer experiments have been performed with colour on the physically and chemically activated carbons for obtaining the breakthrough and retardation co-efficients. The values of Coefficient of Freundlich Isotherm (KF), Distribution coefficient (KdF), Coefficient of Freundlich Isotherm (1/n) and Retardation coefficients (R) are 1, 0.997, 0.993 and 1.549 for CaCl2 activated carbon are 1,0.992,0.982 and 1.542 and for MgCl2 activated carbon are1,0.999, 0.998 and 1.552 respectively. Adsorption capacity for physically and chemically activated carbons are 0.326mg/g, 0.579 mg/g and 0.627 mg/g respectively.