Korean Journal of Environmental Agriculture (한국환경농학회지)

The Korean Society of Environmental Agriculture (한국환경농학회)
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Utilization of Natural Zeolite for $NH_4^\;^+-N$ Adsorbent

($NH_4^\;^+-N$ 흡착제(吸着劑)로서의 천연(天然) Zeolite의 이용(利用)

  • Kim, Sang-Su (Department of Agricultural Chemistry, College of Agriculture, Kyungpook National University) ;
  • Hur, Nam-Ho (Department of Agricultural Chemistry, College of Agriculture, Kyungpook National University) ;
  • Choi, Jyung (Department of Agricultural Chemistry, College of Agriculture, Kyungpook National University)
  • 김상수 (경북대학교 농과대학 농화학과) ;
  • 허남호 (경북대학교 농과대학 농화학과) ;
  • 최정 (경북대학교 농과대학 농화학과)
  • Published : 1991.06.30
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Abstract

This study was conducted to examine the adsorption capacity of $NH_4\;^+-N$ by natural zeolite for the purpose of investigating the possibility for $NH_4\;^+-N$ eliminator of Korean natural zeolite. The dominant clay minerals of zeolite were clinoptilolite and mordenite. The reaction of $NH_4\;^+-N$ adsorption by zeolite reached equilibrium after 4hrs. The amount of $NH_4\;^+-N$ adsoption by zeolite was not significantly affected by the particle size of zeolite. The order of $NH_4\;^+-N$ adsorption by zeolite according to exchangeable cations was Na-> Ca> K-saturated zeolite. The amount of $NH_4\;^+-N$ adsorption by zeolite was increased with increasing pH of solution and the ratio of zeolite to the volume of solution. The isothermal curvel of $NH_4\;^+-N$ adsorption by zeolite was conformed to Langmuir equation.

국내산 천연(天然) zeolite의 $NH_4^\;+-N$ 제거제(除去劑)로서의 이용가능성(利用可能性)을 검정하기 위해 천연(天然) zeolite에 의한 $NH_4^\;^+-N$의 흡착능(吸着能)을 조사하였다. zeolite의 주구성점토광물(主構成粘土鑛物)은 clinoptilolite와 mordenite였다. Zeolite에 의한 $NH_4\;^+$의 흡착반응은 4시간 후에는 흡착평형(吸着平衡)에 도달하였다. $NH_4\;^+$ 흡착량은 zeolite의 입경(粒徑)에 의해 영향을 크게 받지 않았다. 치환성 양(陽)이온에 따른 $NH_4\;^+$ 흡착량은 Na-> Ca> K-zeolite의 순(順)이었다. 반응용액(反應溶液)의 pH가 높을수록 또 동일량(同一量)의 용액에 대한 시료량이 증가할수록 $NH_4\;^+-N$흡착량은 증가하였다. Zeolite에 의한 $NH_4\;^+$흡착등온곡선은 Langmuir 식(式)에 적용(適用)되었다.

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