Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)

Korean Society of Soil Science and Fertilizer (한국토양비료학회)
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The Study on the CEC Increase and Granulation of Natural Zeolite -The Effect of NaOH Concentration and Na2O/Al2O3 Ratio

천연(天然) Zeolite의 CEC 증가(增加)와 입단화(粒團化)에 관(關)한 연구(硏究) -1. NaOH농도(濃度)와 조반비(曺礬比)(Na2O/Al2O3)의 영향(影響)

  • Choi, Jyung (Department of Agricultural Chemistry, Kyungpook National University) ;
  • Hur, Nam-Ho (Department of Agricultural Chemistry, Kyungpook National University)
  • 최정 (경북대학교 농화학과) ;
  • 허남호 (경북대학교 농화학과)
  • Published : 1993.06.30
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Abstract

This study was carried out to develop the soil conditioner and/or the absorbent of high CEC with the natural zeolite poeder whose price was very low. The $SiO_2/Al_2O_3$ ratio & CEC of the natural zeolite were 6.78 and 67.5me/100g respectively. The CEC of the post-reaction product which was treated with 3N-NaOH and $Na_2O/Al_2O_3$ ratio. 9.5 for 8hours was about 200me/100g, which was the highest value than any other treatments. The dominant clay minerals were clinoptilolite, mordenite and smectite in natural zeolite, while phillipsite in the post-reaction product.

부가가치(附加價値)가 낮은 천연(天然) Zeolite 미분(微分)을 이용(利用)하여 CEC가 높은 토양개량제(土壤改良劑) 혹은 흡착제(吸着劑)의 개발(開發)을 시도하였다. 천연(天然) Zeolite의 $SiO_2/Al_2O_3$의 비(比)는 6.78이었으며 CEC는 67.5mg/100g이었다. 그러나 3N-NaOH용액(溶液)으로 $Na_2O/Al_2O_3$의 비(比)를 9.5로 하여 8시간(時間) 처리(處理)한 반응생성물(反應生成物)의 CEC는 약 200me/100g이었으며 다른 조건(條件)으로 처리(處理)한 반응생성물(反應生成物)의 CEC보다 높았다. 천연(天然) Zeolite의 주(主)된 점토광물(粘土鑛物)은 Clinoptilolite, Mordenite 및 Smectite였으나 반응생성물(反應生成物)은 Philipsite로 동정(同定)되었다.

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Acknowledgement

Supported by : 한국과학재단