... anions) in the bed is decreased resulting to shorter contact between the feed and the adsorbent. In addition, the higher the flow rate, the smaller the film resistance, implying that arsenic adsorption ... calculated kinetic coefficients to their corresponding kinetic expressions. These predicted values of q e can be compared with q e from the experimental data. It means that the experimental data ... longer the portion of AC-Fe, the higher the adsorbent cost. Therefore, optimizing the AC-Fe portion in the column is one of the key factors for a feasible arsenic treatment system. To determine an...