| 학회 |
한국공업화학회 |
| 학술대회 |
2015년 봄 (04/29 ~ 05/01, BEXCO (부산)) |
| 권호 |
19권 1호 |
| 발표분야 |
환경에너지_포스터 |
| 제목 |
Enhanced arsenate removal from water by silane grafted chitosan |
| 초록 |
The natural biopolymer chitosan is grafted with 3-aminopropyltriethoxysilane under the inert atmosphere in acetic acid-ethanol solvent mixture. The material is characterized by the FE-SEM (Field Emission Scanning Electron Microscopy) and FT-IR (Fourier transform Infrared) analysis. The surface morphology was slightly changed with the silane grafted-chitosan however; the EDX data confirms the introduction of silane compounds with the modified chitosan samples. The hybrid materials are then employed in the remediation of aqueous solutions contaminated with arsenic(V) under the batch and column reactor operations. The hybrid materials possessed extremely high sorption capacity of arsenic(V) comparing to bare chitosan. The high percent removal of As(V) was obtain within a pH ranges between pH 3.0-7.0 and slightly decrease beyond pH 7.0. The equilibrium sorption was achieved within 120 min of contact and the removal percent decrease from 99.91% to 62.10% while increasing the initial concentration from 1 to 20 mg/L. Moreover, the presence of co-existing ions could not significantly affect the removal of As(V) using the synthesized hybrid materials. Furthermore, the loading capacity of arsenic(V) under the dynamic conditions using hybrid materials packed columns was estimated and found to be 2.576 mg/g. |
| 저자 |
Lalhmunsiama1, Lalchhingpuii2, Diwakar Tiwari2, 이승목1
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| 소속 |
1가톨릭관동대, 2Mizoram Univ. |
| 키워드 |
As(V); hybrid materials; chitosan; kinetic
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| E-Mail |
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