The influences of operating conditions on the removal of Fe(II) in water by adsorption using bentonite as a low-cost adsorbent

Abstract

The contamination of Fe 2 + in groundwater is a problem that needs to be handled seriously as it can cause health problems for humans. In this study, the adsorption process method is conducted by use of natural bentonite from North Aceh. This process is expected to reduce Fe 2+ as effectively as possible. The adsorption process is carried out by varying the contact time, adsorbent dose, and pH of the sample. The most effective contact time is obtained at 160 minutes, the adsorbent dose is 1 g/L and the pH of the sample is in neutral condition. With the initial concentration of metal in the sample solution of 20 mg/L, the adsorption process is able to remove 85.5% of Fe with the remaining Fe in the water of only 2.82 g/L.