This project involved four activities centered on evaluation of activated alumina adsorbents for arsenic removal. Several commercial adsorption media were tested by batch equilibrium protocols, and the influence of pH, silica and hardness on their arsenic sorption capacities was determined. Full adsorption isotherms were developed. A representative synthetic challenge water was developed, and its stability ascertained. A rapid small-scale column test for assessing sorption capacity was developed, to speed the evaluation of sorption media. Finally, the sorption capacities of several commercial media for two source waters from systems that must initiate arsenic removal were determined, using the new rapid column test.
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