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HWAHAK KONGHAK,
Vol.39, No.2, 190-194, 2001
Vol.39, No.2, 190-194, 2001
수용액에서 실리카 표면에 대한 철이온(II)의 흡착거동
Adsorption Behavior of Fe(II) on Silica Surface in Aqueous Solutions
본 연구에서는 실리카를 이용하여 수용액으로부터 철이온(Ⅱ)을 효율적으로 제거할 수 있는 조건을 구명하기 위해 철이온의 흡착거돈과 pH의 영향에 대해 회분식과 연속식 방법으로 실험을 실시했다. pH 2에서는 흡착량이 적었지만 pH 2-2.5의 범위에서 흡착량이 급격히 증가했고 pH 2.5-3에서 완만하게 흡착량이 증가했으며 pH 3-9에서는 균일한 흡착량을 나타냈다. 실리카 표면에 대한 철이온(Ⅱ)의 흡착에서, Freundlich 흡착등온식이 Langmuir 흡착등온식보다 더 적합했으며 Lagergren 흡착속도식으로 철이론(Ⅱ)의 흡착특성을 나타낼 수 있었다.
The adsorption behavior of a iron ion(II) on the silica under the various pH conditions were performed in the batch and continuous systems in order to study the efficient removal conditions of a iron ion from aqueous solutions. The adsorption amount was very small at pH 2 but rapidly increased in pH 2-2.5 and slowly in pH 2.5-3. That was constant regardless of pH value in region of pH 3-9. In adsorption of a iron ion(II) on the silica surface, Freundlich adsorption isotherm was more suitable than Langmuir adsorption isotherm and the adsorption characteristics could be explained by using Lagergren adsorption rate.
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[Cited By]
- Lee YJ, Kim MS, Chung JG, Journal of the Korean Industrial and Engineering Chemistry, 12(7), 744, 2001
- Lee YJ, Chung JG, Journal of the Korean Industrial and Engineering Chemistry, 13(2), 179, 2002
- Hong KM, Kim MS, Chung JG, Journal of the Korean Industrial and Engineering Chemistry, 14(3), 281, 2003
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