| 학회 |
한국공업화학회 |
| 학술대회 |
2015년 봄 (04/29 ~ 05/01, BEXCO (부산)) |
| 권호 |
19권 1호 |
| 발표분야 |
(국제협력) 우수 외국인 연구자 세션 |
| 제목 |
Adsorptive removal of arsenic(III) and arsenic(V) from water by iron oxide-impregnated alginate beads |
| 초록 |
Amorphous iron oxide-impregnated alginate beads were developed for the removal of both arsenic(III) and arsenic(V) from water phase. The IO-alg beads were characterized by SEM-EDX. Arsenic adsorption efficiency by the beads was investigated as a function of contact time, concentration, pH, dosage and iron loading in the beads in batch experiments. Arsenic removal increased with increasing dose and initial concentration. Arsenic(III) adsorption by the beads was favored in pH range 6-9, while As(V) adsorption was favored in acidic pH. Pseudo-second-order kinetics and Freundlich isotherm model best described adsorption phenomena in terms of kinetics and equilibrium, respectively. Effectiveness of the beads for arsenic adsorption was not significantly affected even in the presence of common natural anions; only phosphate showed pronounced competitive effect especially at high concentration. |
| 저자 |
Abinashi Sigdel, 박정원, 곽효은, 민소진, 박병규
|
| 소속 |
Yonsei Univ. |
| 키워드 |
Adsorption; alginate; amorphous iron oxide; arsenic; competition |
| E-Mail |
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