자성으로 표면개질된 제올라이트 흡착제를 이용한 수중 암모늄 이온 제거 특성
Removal Properties of Aqueous Ammonium ion with Surface Modified Magnetic Zeolite Adsorbents
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참고문헌
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초록
본 연구는 수중 암모늄 이온을 처리하기 위하여 자성 제올라이트를 합성하여 흡착 특성을 평가하였다. 표면개질된자성 제올라이트는 수열작용으로 합성되었다. 제올라이트와 Fe3O4 복합체는 SEM과 XRD 분석 결과 혼합비12.6% 범위이내에서 최적인 상태로 침투 혼합된 것으로 관찰되었다. 최적의 흡착 pH는 중성부근인 약 8근처에서나타났고, 최대 흡착량은 Fe3O4 함량의 증가에 따라 감소하였다. 수중 암모늄 이온은 Langmuir 식에 근사하는 흡착식으로 나타났다. 개발된 합성제올라이트 흡착제는 질소농도의 관리가 필요한 습지환경 보호에도 적용 가능할 것으로 판단된다.
Abstract
The removal property of magnetic zeolite for the adsorption of aqueous ammonium ion was examined in this work. The surface modified magnetic zeolite was produced by hydrothermal synthesis. The complex of zeolite and Fe3O4 was established by the observation of SEM and XRD analysis and less than 12.6% of Fe3O4 content in magnetic zeolite was observed in the form of Fe3O4 particles. The optimum pH of adsorption was shown around 8 and the maximum adsorption linearly decreased with the increase of Fe3O4 content. The adsorption isotherm for aqueous ammonium ion was approximated by Langmuir equation. The developed surface modified magnetic zeolite adsorbent was recommended to control the nitrogen pollution for wetland environment system.
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