염화암모늄용액에서 음이온 교환수지에 의한 금(III)의 이온교환
Ion Exchange of Gold(III) from Ammonium Chloride Solution by Anionic Resins
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초록
강염기성 음이온 교환 수지인 Amberlite IRA 402와 AG 1-X8로 염화암모늄용액에 함유된 금(III)의 이온교환을 회분식 실험으로조사했다. 두 수지 모두 염화암모늄용액에서 금(III)을 잘 흡착했으며, AG 1X-8이 Amberlite IRA 402보다 우수한 금(III) 흡착거동을 보였다. AG 1-X8 수지의 금(III)의 흡착은 Langmuir 등온흡착과 잘 일치했고 흡착용량은 355 mg/g이었다. AG 1X-8에 흡착된금(III)은 과염소산으로 세출할 수 있으며, 과염소산의 농도 증가에 따라 세출률이 증가하였다.
Abstract
Batch ion exchange experiments of Au(III) were performed from ammonium chloride solution by employing strong anionic exchange resins (Amberlite IRA 402 and AG 1-X8). Au(III) was well loaded into the two resins and the loading behavior of Au(III) into AG 1-X8 was superior to that into Amberlite IRA 402. The loading of Au(III) into AG 1-X8 followed Langmuir adsorption isotherm and the experimentally determined loading capacity was 355 mg/g. Au(III) was successfully eluted by HClO 4 from the loaded AG 1-X8 and the elution percentage of Au(III) increased with the concentration of HClO 4 .
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