Toxicity and Bacterial Decolourization of Textile Dyes (original) (raw)

The removals of Orange G (OG) dye on Chitin (CHI) and Commercial Activated Carbon (CAC) have been studied comparatively. The effects of various experimental parameters have also been investigated using a batch adsorption technique at room temperature. The extent of dye removal increased with decrease in the initial concentration, initial pH of the dye solution and increased with increase in contact time, amount of adsorbent used. Adsorption data were modeled using the Freundlich, Langmuir adsorption isotherms and first order kinetic equations. The kinetics of adsorption were found to be first order with regard to intra-particle diffusion rate. These results indicate that Chitin was found to be effective adsorbent alternative to Commercial activated carbon in waste water treatment for the removal of color and dyes.