Comparison of Low Concentration and High Concentration Arsenic Removal Techniques and Evaluation of Concentration of Arsenic in Ground Water: A Case Study of Lahore, Pakistan

The main focus of this study was the evaluation of arsenic concentration in the ground water of Lahore atdifferent depth and application of different mitigation techniques for arsenic removal. Twenty four hours of solar oxidationgives 90% of arsenic removal as compared to 8 hr. or 16 hr. Among oxides, calcium oxide gives 96% of Asremoval as compared to 93% by lanthanum oxide. Arsenic removal efficiency was up to 97% by ferric chloride, whereas95% by alum. Activated alumina showed 99% removal as compared to 97% and 95% removal with bauxite and charcoal,respectively. Elemental analysis of adsorbents showed that the presence of phosphate and silica can cause a reductionof arsenic removal efficiency by activated alumina, bauxite and charcoal. This study has laid a foundation forfurther research on arsenic in the city of Lahore and has also provided suitable techniques for arsenic removal. KCI Citation Count: 0