title: Effect of co-existing copper and calcium on the removal of As(V) by reused aluminum oxides.
abstract: Among the various heavy metals, arsenic is frequently found in abandoned mine drainage and the environmental fate of arsenic in real aqueous solutions can be highly dependent on the presence of co-existing ions. In this study, removal of arsenate through adsorption on the reused aluminum oxide or through precipitation was investigated in a single and in a binary system as a function of pH and concentration. Different removal behaviors of arsenate were observed in the presence of different cations as well as a variation of the molar ratios of arsenate to cations. Co-operative effects on arsenate removal by precipitation in solution occurred with an increase of copper concentration, while a decrease of arsenate removal resulted in increasing calcium concentration. It was observed that the arsenate removal in the presence of calcium would be highly dependent on the molar ratios of both elements.
authors.affiliation: Division of General Education, Kwangwoon University, Seoul 139-701, Korea.
authors.forename: J K
authors.initials: JK
authors.lastname: Yang
authors.forename: Y J
authors.initials: YJ
authors.lastname: Park
authors.forename: K H
authors.initials: KH
authors.lastname: Kim
authors.forename: H Y
authors.initials: HY
authors.lastname: Lee
authors.forename: K C
authors.initials: KC
authors.lastname: Min
authors.forename: S M
authors.initials: SM
authors.lastname: Lee
mesh_terms: D000327:Adsorption; D000537:Aluminum Oxide / Q000737:chemistry*; D001151:Arsenic / Q000737:chemistry*; D002118:Calcium / Q000737:chemistry*; D002412:Cations; D003300:Copper / Q000737:chemistry*; D012965:Sodium Chloride; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification / Q000379:methods*
chemical_list: D002412:Cations; D014874:Water Pollutants, Chemical; D012965:Sodium Chloride; D003300:Copper; D000537:Aluminum Oxide; D001151:Arsenic; D002118:Calcium