REMOVAL OF NICKEL FROM WASTE WATER USING GUAR GUM

Abstract

Heavy metals are one of the most toxic materials to the environment. Adsorption is the process which is used for the removal of heavy metals from wastewater. Many researches have been conducted to remove heavy metals using different materials. Various adsorbents have been used to remove different type of heavy metal ions from wastewater especially those that are harmful to mankind. Activated carbons, plant or lignocellulosic wastes, clays and biopolymers are the most common adsorbents used. For this research, Guar Gum was used as a adsorbent to remove Heavy Metal from wastewater. Guar Gum, a type of biopolymer, is a good adsorbent to remove the heavy metal ions from wastewater. The synthetic wastewater was prepared in the laboratory to conduct the experiments. Batch experiments were conducted to obtain the optimum conditions for Heavy Metals. Effect of parameter like pH, adsorbent dose, contact time, temperature and initial metal ion concentration were also determined. The optimum conditions obtained were 180 min contact time, 10-500 mg adsorbent dose 1-5 g and pH 5 for Nickel. The maximum adsorption capacity was found to be 91.9% for Nickel.