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• 영문명: A Study on Heavy Metals Removal in Aqueous Solution Using Autoclaved Chitosan
• 발행기관: 한국환경보건학회
• 저자명: 김동석(Dong Seog Kim) 이승원(Seung Won Lee)
• 간행물 정보: 『1. 한국환경보건학회지』제29권 제3호, 50~58쪽, 전체 9쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 2003.09.30

영문 초록

Removal of heavy metal ions (Cd²⁺, Cr³⁺, Cu²⁺, Pb²⁺) by several chitosans was studied and the molecular weight of chitosan was investigated in order to examine the effect of autoclaving. Chitosan were divided into 3 groups (A type, controlled chitosan; B type, autoclaved for 15 min; C type, autoclaved for 60 min). The heavy metal removal capacity and rate of B type chitosan were higher than those of A type and B type chitosan. The molecular weight of chitosan was decreased by the increase of autoclaving time. Therefore, the heavy metal capacity was not well correlated to the molecular weight. Freundlich and Langmuir isotherm was determined from the experimental results of equilibrium adsorption for individual heavy metal ions on chitosan. Langmuir isotherm was well fitted to this experimental data. The heavy metal removal capacity of B type chitosan was in the order of Pb²⁺ > Cu²⁺ > Cd²⁺> Cr³⁺.

목차

Ⅰ. 서론

Ⅱ. 연구방법

Ⅲ. 결과 및 고찰

Ⅳ. 결론

감사의 글

참고문헌

키워드

Autoclaving Chitosan Molecular weight Heavy metal ions