Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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A Study on Removal Effect of Residual Pesticide on Adsorbent

흡착제에 의한 잔류농약 제거효과에 관한 연구

  • An, Jung-hyeok (Department of Environmental & Applied Chemical Engineering, Kangnung National University) ;
  • Kim, Joon-bum (Department of Environmental & Applied Chemical Engineering, Kangnung National University) ;
  • Kwon, Young-du (Department of Environmental Engineering, Hanzhong University) ;
  • Jeon, Choong (Department of Environmental & Applied Chemical Engineering, Kangnung National University) ;
  • Park, Kwang-ha (Department of Environmental & Applied Chemical Engineering, Kangnung National University)
  • 안중혁 (강릉대학교 환경응용화학공학과) ;
  • 김준범 (강릉대학교 환경응용화학공학과) ;
  • 권영두 (한중대학교 환경공학과) ;
  • 전충 (강릉대학교 환경응용화학공학과) ;
  • 박광하 (강릉대학교 환경응용화학공학과)
  • Received : 2006.11.21
  • Accepted : 2007.09.17
  • Published : 2007.12.10
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Abstract

This study was carried out to investigate adsorption characteristics of residual pesticides on an adsorbent. $Bauxsol^{TM}$ and mackban-stone as adsorbent were used. Analytical method for residual pesticides was established by GC/NPD and $GC/{\mu}ECD$. Pesticides used in this study were ${\alpha}$-endosulfan, ${\beta}$-endosulfan, pendimethalin and chlorpyrifos-methyl, fenitrothion, and recovery rates were more than 97%. Adsorption rate on an adsorbent was decreased in order of endosulfan, chlorpyrifos-methyl, pendimethalin, fenitrothion. Organochlorine pesticides showed higher removal rate than the other pesticides. $Bauxsol^{TM}$ gave both chemical decomposition and physical adsorption. Mackban-stone gave only physical adsorption on the other hand. The high pH and chloric ions structure of eluted solution have greatly affected at chemical resolution. The removal rate of pesticides was increased due to the physical property of adsorbent, i.e. high porosity. The above adsorbent is to be a candidate to remove residual pesticides in water and pond of links.

본 연구는 흡착제를 이용하여 잔류농약의 흡착특성을 살펴보았다. 흡착제는 $bauxsol^{TM}$과 맥반석을 사용하였다. 잔류농약의 분석은 GC/NPD와 $GC/{\mu}ECD$로 분석하였다. 실험에 사용된 농약은 ${\alpha}$-endosulfan, ${\beta}$-endosulfan, pendimethalin, chlorpyrifos-methyl, fenitrothion이고 회수율은 97% 이상으로 나타났다. $Bauxsol^{TM}$과 맥반석 흡착제의 흡착율은 endosulfan, chlorpyrifosmethyl, pendimethalin, fenitrothion의 내림차순으로 나타났고, 상대적으로 유기염소계 농약이 다른 농약에 비해 높은 제거율을 보여주었다. $Bauxsol^{TM}$은 농약의 화학적 분해와 물리흡착이 동시에 발생하였고, 맥반석은 물리흡착만이 발생하였다. 흡착제 용출액의 높은 pH와 농약구조의 염소이온은 화학적 분해에 많은 영향을 주었다. 흡착제의 물리흡착은 광물의 많은 다공성에 의해 농약 제거율을 높여 주었다. 흡착제는 골프장의 연못 등 수질에 잔류농약제거 가능성을 보여주었다.

Keywords

Acknowledgement

Supported by : 강릉창업보육센터 옥천환경

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