ABSTRACT
Arsenic toxicity in groundwater have the severe impact on the health of the living beings. There are many countries affected by the elevated level of arsenic in the groundwater and the recommended value of arsenic in drinking water given by WHO (<10 µg/L). In the current study, we have developed the adsorbent consist of oxides of manganese and aluminum. Tetravalent manganese oxidizes the arsenite into arsenate and simultaneously forms the co-precipitate with trivalent manganese and the trivalent aluminum. Ultimately, the concentration of elements in the treated water meets the standard of the drinking water. The prepared adsorbent shows the good adsorption capacity for the arsenite (21.56 mg/g) species. XANES and XPS techniques have been used to confirm the oxidation state of arsenic and manganese in the pristine as well as the spent adsorbent.
