Concentration of water supplies with metals is constant area of concern naturally an international. The challenge to remediate hazardous metals containing waste stream from present formal mining operation, industrial sites and ground water is immersed. Adsorption has proved to be an accelerate way to treat industrial waste effluents. The heavy metals renders the water unsuitable for drinking and also higher toxic to human being. Removal of these material is therefore essential. The studies pertaining to the use of inexpensive agro based adsorbents, such as tree bark, saw dust, Corn cob, straw and fly ashes for heavy metals ions has been investigated using Mangifeara indica substrate through batch adsorption studies. Result obtained are quite encouraging, batch adsorption studies have shown that removal of metal ions is dependent upon process parameters like contact time, temperature, metal ions concentration, dosage and pH. The maximum removal of Co2+ to the extent of has been achieved at pH 4 to 6 in 30 min in the concentration range 30 to 90 mg/liter. The use of packed column adsorption has been investigated at the optimum condition, to study the feasibility of the process s for application in small scale industries.
DE Fluoridation of Domestic Waste Water by using Activated Diatomaceous Earth in fixed Mattress Column Adsorption System
