|
|
| Type |
Poster Presentation |
| Area |
Analytical Chemistry |
| Room No. |
Event Hall |
| Time |
4월 19일 (목요일) 11:00~12:30 |
| Code |
ANAL.P-302 |
| Subject |
Use of powdered cockle shell as a bio-sorbent material for
phosphate removal from water |
| Authors |
Keon Sang Ryoo*, Jong-Ha Choi, Yong Pyo Hong
Department of Applied Chemistry, Andong National University, Korea
|
| Abstract |
In this study, powdered cockle shell was used as a bio-sorbent material for the removal of phosphates in water. The SEM-EDX, XRD and FT-IR analyses showed that calcium carbonate (CaCO3) exists in aragonite state in powdered cockle shell. The effect of pH, contact time and initial concentrations of phosphate was investigated in a series of batch-sorption experiments. Among the various factors studied, the pH was turned out to be a key variable for phosphate removal. Based on the experimental results for pH, it was found that the phosphate is chemically sorbed onto aragonite surface. At lower phosphate concentration, roughly 88% of sorption efficiency was accomplished by powdered cockle shell. The pseudo-second-order kinetic and the Langmuir isotherm models were fitted well to the sorption data of phosphate because of their higher correlation coefficients (R2). |
| E-mail |
ksr@andong.ac.kr |
|
121st General Meeting of the KCS