Abstract
Electrodialysis (ED) is a potential option that can be used for treatment of groundwater or surface water containing ions or mineral salts in excess of the limits for health. In this reseach, electrodialysis was used to study the elimination of sulfate and its concurrent ions (nitrate, fluoride) from groundwater by using of cation exchange membrane and anion exchange membrane whose ion exchange capacity was different. The effect of the two different membrane types, the type of electrode solution, and the form of configuration of the cation exchange membrane and anion exchange membranes on the rate and removal efficiency of the ions were investigated. The performance of the ED process included the reduction profile of the ion concentrations in the diluted tank and the removal efficiency. The results showed that the type of cation exchange membrane and anion exchange membrane, and the membrane configuration are influenced how quickly ion removal occured by ED. Generally, the ion removal efficiency was greater than 90% for all investigated variables.
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