Removal efficiency of an aluminum based hydrotalcite-like-compound on Arsenic

Hydrotalcite has been considered as a promised adsorbent to remove arsenic. In this study, bench scale studies were conducted to evaluate the effects of adsorbent dose and initial pH on the efficiency for removing arsenic (As)(III) and As(V) by adsorption onto an Al-based hydrotalcite (named MA3). Then the maximum removal adsorption capacity and isothermal models were investigated. The results showed that the optimum pH values for removing As(III) and As(V) were 10 and 5-6, respectively.