| Title |
Adsorption Characteristics of Arsenic using the Recycled Aluminium Oxide |
| Authors |
민경철 ( Kyung Chul Min ) ; 김원기 ( Won Gee Kim ) ; 이승목 ( Seung Mok Lee ) ; 김근한 ( Keun Han Kim ) ; 이희용 ( Hee Yong Lee ) ; 양재규 ( Jae Kyu Yang ) ; 박연종 ( Youn Jong Park ) |
| Keywords |
Adsorption; Aluminum oxide; Arsenic; Multiple-ion |
| Abstract |
As(V) adsorption on aluminum oxide powder which was recycled from industrial wastes containing aluminum hydroxide was evaluated. Aluminum oxide powder in this study was prepared by calcinating aluminum hydroxide wastes at 550°C. Spectroscopic analysis indicated that the aluminum hydroxide wastes were changed to aluminum oxide by calcination. Arsenic adsorption isotherm was conducted with variation of ionic strength and multiple-ion systems using Ca(II) and Cu(II). As(V) removal showed typical anionic adsorption characteristics that the removal efficiency decreased with increasing pH in single As(V) system as well as in binary and ternary system. More than 80% of As(V) at an initial concentration of 5×10-5 M was removed from aluminum oxide powder in As(V) single system. The effect of ionic strength on As(V) adsorption was negligible, which indicated the strong bonding between aluminum oxide powder and As(V). The removal efficiency of As(V) was higher in a binary system with Cu(II) than in a binary system with Ca(II). |