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HWAHAK KONGHAK,
Vol.39, No.1, 48-53, 2001
Vol.39, No.1, 48-53, 2001
수용액에서 루타일형 이산화티타늄에 대한 구리이온(II)의 흡착
Adsorption of Copper Ion(II) on Rutile-Type Titanium Dioxide in Aqueous Solutions
반응기에 루타일형 이산화티타늄을 50g/l 넣고 5,000rpm으로 교반하면서 구리이온의 흡착거동을 연구했다. 산성 영역에서는 Langmuir 흡착등온식이 적합했으며 흡착량이 최대가 되는 pH 9의 염기성 영역에서는 Freundlich 흡착등온식이나 Sips 흡착등온식이 적합했다. pH가 증가할수록 흡착량도 증가했으며 등전점(pH 5-6) 이하의 pH영역에서는 급격한 흡착이 이루어졌지만 등전점 이상의 pH영역에서는 완만한 흡착이 일어났다. 흡착이 진행됨에 따라 수용액의 pH값은 낮아졌다. 루타일형 이산화티타늄이 아나타제형 이산화티타늄보다 흡착량이 많았고 아나타제형 이산화티타늄 50%와 루타일형 이산화티타늄 50%를 혼합한 경우의 흡착량이 가장 많았다.
We have studied the adsorption behavior of a copper ion using the reactor containing the titanium dioxide of 50 g/l and with the stirring of 5,000 rpm. A Langmuir adsorption isotherm was suitable in the acidic region, while Freundlich and Sips adsorption isotherms were suitable in the basic region at pH 9 where maximum adsorption had been observed. The adsorption amount increased with an increased value of pH. Adsorption took place rapidly in the pH region below the isoelectric point(pH 5-6) and more slowly above the isoelectric point. The value of pH in the solution decreased during the adsorption process proceeded. The adsorption amount on the rutile-type titanium dioxide was more than that on the anatase-type titanium dioxide. And the adsorbent manufactured with the anatase type of 50wt% and the rutile type of 50wt% was much better in adsorption performance.
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[Cited By]
- Lee YJ, Kim MS, Chung JG, Journal of the Korean Industrial and Engineering Chemistry, 12(7), 744, 2001
- Hong SC, Kim MS, Chung JG, HWAHAK KONGHAK, 40(1), 22, 2002
- Hong SC, Kim MS, Chung JG, Journal of the Korean Industrial and Engineering Chemistry, 13(2), 138, 2002
- Hong KM, Kim MS, Chung JG, Journal of the Korean Industrial and Engineering Chemistry, 14(3), 281, 2003
- Hong SC, Chung JG, Korean Chemical Engineering Research, 42(1), 70, 2004
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