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HWAHAK KONGHAK,
Vol.40, No.2, 252-258, 2002
Vol.40, No.2, 252-258, 2002
제주 Scoria에 의한 구리 이온의 흡착특성
Adsorption Characteristics of Copper Ion by Jeju Scoria
제주도의 지형학적 특성 때문에 다량 산재해 있는 scoria를 중금속 흡착제로서의 이용 가능성을 검토하기 위하여 5곳의 대표 지역에서 scoria를 채취하여 이들 scoria를 사용하여 Cu(2+) 이온에 대해 흡착 특성을 검토하였다. Scoria의 종류에 따른 구리 이온의 흡착량은 이온치환용량(CEC) 또는 표면적이 높을수록 구리 이온의 흡착량은 증가하였다. Scoria의 양이 많아질수록 Cu(2+)의 제거율은 증가하였으나, 단위 무게당 흡착량은 감소하였다. 그러나, 구리 이온의 초기농도가 증가함에 따라서는 구리이온의 흡착량이 증가하였다. 유효확산계수는 초기 구리 이온의 농도에 대해 거의 직선성을 나타내었다.
The adsorption characteristics of copper ion on scoria species, which were sampled at five representative areas of Jeju island, Korea, were investigated and the parameters related to its adsorption were obtained. Copper uptake by a scoria showed a high correlation with its cationic exchange capacity(CEC) and surface area, i.e., The scoria with higher CEC and surface area, showed higher copper uptake. The copper removal performance increased but the copper uptake decreased as scoria concentration increased. However, the copper uptake by scorias increased with increasing initial copper ion concentration. The effective diffusion coefficient showed a high linearity with initial concentration of copper ion.
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