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HWAHAK KONGHAK,
Vol.40, No.1, 43-49, 2002
Vol.40, No.1, 43-49, 2002
키토산과 활성탄이 혼합된 CAC 비드를 이용한 유기물과 무기물의 흡착
The Adsorption of Organic and Inorganic Compounds Using the CAC Beads Combined with Chitosan and Activated Carbon
평균분자량이 4.5×10(5), 탈아세틸화도가 91%인 키토산과 PAC(powder activated-carbon)를 혼합하여 이를 2 wt% 초산수용액에 용해시킨 후 CAC(mixed chitosan with power activated-carbon) Beads를 제조하였다. 유기물과 무기물을 동시에 제거하기 위하여 CAC Beads의 흡착 효율에 대하여 조사하였다. CAC Beads에 의한 구리와 페놀의 흡착평형은 Sips식으로 잘 묘사할 수 있었으며, Beads 내부에서의 확산과정은 세공확산모델로 설명할 수 있었다. 결과적으로, CAC Beads는 폐수로부터 유기물과 무기물을 동시에 제거할 수 있는 새로운 흡착제로 사용될 수 있을 것이다.
Simultaneous adsorption of phenol and copper ions on CAC beads were investigated. The chitosan solution was prepared by dissolving chitosan power and PAC into 2 wt% aqueous acetic acid solution. Then CAC beads were made by this chitosan solution. The average molecular weight and the degree of deacetylation of the chitosan used here were determined to be 4.5×10(5) and 91%, respectively. Adsorption equilibrium of copper ions and phenol on CAC beads could be represented by Sips equation. The diffusion mechanism could be explained by pore diffusion model. Consequently, CAC beads could be used as a adsorbent for simultaneous removal and separation of phenol and copper ions from aqueous effluents.
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