Distillery effluents are normally characterized by high chemical oxygen demand (COD), high polyphenol content, and high acidic and dark colour. The dark brown colour is caused by the presence of a pigment called melanoidin. The pigment reduces sunlight penetration in water bodies thereby affecting aquatic life. This study consequently evaluates the use of surface modified natural zeolite in the removal of melanoidin present in distillery wastewaters. Batch and column sorption studies were carried out to evaluate the performance of the modified zeolite in the removal of melanoidin. Under batch experiment, equilibrium, kinetics and thermodynamic studies were performed. The effects of sorbent mass, initial solution pH, initial concentration and temperature were examined. The equilibrium sorption data obtained were fitted to Langmuir and Freundlich isotherms. The thermodynamic studies indicated that th...
|Journal||Gauteng Tertiary Institutions’ 5th Water Research Showcase (WRS2012)|
|Publication status||Published - 2012|