Sorption techniques are widely used to remove heavy metal ions from large volume of aqueous solutions, this plays a vital role in controlling environmental pollution. Herein, the sorption of Pb 2+ , Cu 2+ and Zn 2+ with blended membrane of sodium alginate (Na-Alg) and immobilized karkashi leaves (IKAL) from aqueous solution was investigated at optimum conditions for effectiveness. Sorption capacities of the membrane for Pb 2+ , Cu 2+ and Zn 2+ were found to be 86.80, 40.60 and 39.55% respectively. The sorption behavior with respect to initial pH, ionic strength, temperature, contact time and initial metal ion concentration was investigated for optimum sorption conditions. Maximum sorption was found to occur at pH 3.0 for all the metal ions studied. Results showed that metallic ion uptake by the blended membrane declined with increase in ionic strength. This trend was also observed at an increased temperature of 50ºC for Pb 2+ , Cu 2+ and 40ºC for Zn 2+ . Increase in initial metal ion concentration led to increase in metal ion uptake. At the end of the chemical remediation, the blended membrane was found to be effective to some extent, with the reaction being exothermic.

The remediation of surface water contaminated with domestic purpose kerosene (DPK) using Fenton's oxidation was investigated at ambient temperature for effectiveness at optimum conditions established. Results obtained from optimization studies for the Fenton's oxidation employed for the study were 250000 mg/L H 2 O 2 and 300 mg/L FeSO 4 at ambient temperature with pH of samples adjusted to 3.0. At the end of the chemical remediation, the Fenton's oxidation was found to be rapid with the reaction being exothermic and followed second order kinetics. About 44.4% of the total petroleum hydrocarbon (TPH) as kerosene removal efficiency was achieved after 90 minutes. The reaction also followed a pseudo-first order kinetics with the rate constant of 3x10 2 mol -1 cm 3 min -1 .