Removal of COD Using Leaves, Stem and Root of Mangifera Indica as Biosorbent

Modern environmental legislation focuses more on prevention of pollution through control of hazardous materials and processes as well as on protection of eco-systems. A number of technologies have been developed over the years for the treatment of industrial wastewater esp. COD. Potential of biosorbent prepared of leaves, stem and root of two species of Mangifera indica as a commercial grade activated carbon was determined to remove COD from the wastewater. For this purpose a system of standardised batch absorbers under steady state conditions is used to study the effect of these media. The influence of contact time, adsorbent dosage, pH of the solution, initial COD concentration, temperature and adsorbent particle size on the rate of per cent COD reduction is evaluated. Biosorbents has shown quite effective adsorbent capacity for COD reduction from the textile wastewater. The results revealed 96-98% of COD reduction which makes it an attractive option for the treatment of textile wastewater.