Korean Journal of Agricultural Science (농업과학연구)
- Volume 10 Issue 2
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- Pages.345-353
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- 1983
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- 2466-2402(pISSN)
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- 2466-2410(eISSN)
On the Separation and Adsorption of Hg(II) by DBHQ-OPP Foam
DBHQ-OPP foam에 의한 Hg(II)의 흡착과 분리
- Sung, Chang Keun (Dept. of Food Sci. & Tech., College of Agriculture, Cnungnam National University) ;
- Moon, Young Ja (Dept. of Food Nutri., Daejeon Junior College) ;
- Kim, Chan Jo (Dept. of Food Sci. & Tech., College of Agriculture, Cnungnam National University)
- Published : 1983.12.31
Abstract
The polyurethane foam impregnated with 5, 7-dibromo-8-hydroxyquinoline (DBHQ) has been studied to be applied to the quantitative adsorption and recovery of Hg(II) from the aqueous solutions. The adsorption of Hg(II) by DBHQ-OPP foam is due to the chelation between DBHQ-OPP foam and Hg(II) on the foam, forming each colored insoluble chelate with 1:2 mole ratio. The optimum experimental conditions for the adsorption of Hg(II) has been determined. The quantitative recovery of Hg(II) adsorption by the OPP foam and reuse of DBHQ-OPP foam were investigated. Hypothesis on the adsorption and separation mechanism of Hg(II) and DBHQ to the polyurethane foam was proposed.
수용액에 존재하는 중금속이온중의 Hg(II)을 정량적으로 분리 회수하기 위하여 DBHQ(5. 7-dibromo-8-hydroxyquinoline)을 Open-pore polyurethane foam (OPP foam)에 침윤시켜 수지의 응용성을 연구하였다. Hg(II)의 흡착은 DBHQ와 1:2 몰비의 착물형성이 이루어지며 Hg(II)의 흡착과 분리는 Batch법으로 실험하여 최적조건을 결정하였다. 가장 양호한 흡착은 DBHQ의 등전점인 pH5.0 부근에서 그리고 분리하는데는 4M-HCl, 50% 아세톤 용매를 사용하였을 경우가 비교적 정량적인 흡착과 분리가 이루어지는 조건이었으며 이와같은 결과를 기초로 DBHQ-OPP foam에 대한 Hg(II)의 흡착 및 분리에 대한 반응메카니즘을 제안했다.
Keywords