Abstract

• This research work is focused on the determination of physicochemical properties of ground water collected from Hinthada and Zalun townships, Ayeyarwady Region, and Pb(II) ion in model solution and groundwater sample (3) were removed. Water samples: sample (1) from No.512, Myopart Street, Kanaungsu, sample (2) from No.1, Yankin Street, Kanaungsu, sample (3) from Lain Knoe Village, sample (4) from Lain Knoe Village, sample (5) from Htan Hnint Pin, Dar Sin Gaung Village from Hinthada, sample (6) from Yay Kyaw middle school, sample (7) from Hospital Street and sample (8) from General Administration Office of Zalun were collected. The physicochemical parameters such as pH, dissolved oxygen, chemical oxygen demand, biochemical oxygen demand, alkalinity, nitrate nitrogen, total phosphate, temperature, turbidity, and total dissolved solid of the collected water samples were determined. In this research, removal of Pb(II) ion from model solution by KPT Kaolin was studied by effect of contact time, effect of dosage, effect of pH and effect of concentration of metal ion solution. Sorption of Pb(II) ion by Kaolin clay sample was very fast and then adsorbed ion was slowly release into the solution. After 24 h, the adsorption process reached equilibrium. The optimum pH 6.5 observed while 96.3 % Pb(II) was removed. The Pb(II) ion sorption efficiency increased with increasing dosage of Kaolin sample. The sorption efficiency become decreased as the concentration of metal ions increased and the sorption site decrease. It was found that, the removal percent of Pb(II) ions was 90 %.