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Adsorption of uranium(Ⅵ), calcium(Ⅱ), and samarium(Ⅲ) ions on synthetic resin adsorbent with styrene hazardous materials
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2009, v.22 no.1, pp.92-100
(2009). Adsorption of uranium(Ⅵ), calcium(Ⅱ), and samarium(Ⅲ) ions on synthetic resin adsorbent with styrene hazardous materials. Analytical Science and Technology, 22(1), 92-100.
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Abstract
초록 1%, 2%, 5% 및 10%의 가교도를 가진 스타이렌(제4류 위험물중 제2석유류) 디비닐벤젠 공중합체에 1-aza-12-crown-4 거대고리 리간드를 치환반응으로 결합시켜 수지들을 합성하였다. 이들 수지의 합성은 염소 함량, 원소 분석, 열중량 분석, 비표면적(BET) 그리고 IR-분광법으로 확인하였다. 수지 흡착제에 의한 금속 이온들의 흡착에 미치는 pH, 시간, 수지의 가교도 그리고 용매의 유전상수에 따른 영향들을 조사하였다. 금속 이온들은 pH 3 이상에서 큰 흡착율을 보였으며, 금속 이온들의 흡착 평형은 2시간 정도였다. 한편, 에탄올 용매에서 수지에 대한 금속 이온의 흡착 선택성은 UO₂<SUP>2+</SUP>＞Ca<SUP>2+</SUP>＞Sm<SUP>3+</SUP> 이온이었고, 우라늄 이온의 흡착력은 1%, 2%, 5% 및 10%의 가교도 순으로 감소하였으며, 용매의 유전상수 크기에 반비례하였다
- keywords
- 1-aza-12-crown-4, macrocyclic ligand, crosslinkage, styrene divinylbenzene (DVB)
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