Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)

Korean Society of Soil Science and Fertilizer (한국토양비료학회)
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Adsorption of Pentachlorophenol (PCP) on Clay Minerals from Hexane Solution

Hexane 용액중(溶液中)에서 점토용물(粘土鏞物)에 의(依)한 PCP 흡착(吸着)

  • Choi, Jyung (Dept. of Agricultural Chem., College of Agriculture, Kyungbuk University)
  • 최정 (경북대학교농과대학농화학과)
  • Received : 1974.06.20
  • Published : 1974.09.20
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Abstract

Adsorption experiments were carried out with several clay minerals and PCP hexane solution in order to clarify the status of adsorbed PCP on the clay surface. The amount of PCP adsorption on clay minerals was much greater in the clay-hexane system than in the clay water system. Among the clay minerals, allophane and imogolite ($SiO_2/Al_2O_3$ ratio of about 1) were the most efficient adsorbents of PCP. The PCP adsorption from hexane solution was greatly hindered by the presence of water, suggesting the occurrence of adsorption by a dipole-dipole interaction. PCP adsorption is dependent upon the nature of the clay surface and the exchangeable cations rather than the total surface area.

Hexane 용액중(溶液中)에서 점토광물(粘土鑛物)에 의한 PCP 흡착실험(吸着實驗)을 행(行)하여 점토표면(粘土表面)에서의 PCP의 상태(狀態)를 조사(調査)하였다. PCP는 수용액(水溶液)에서 보다 Hexane 용액(溶液)에서 더욱 많은 양(量)이 점토(粘土)에 흡착(吸着)된다. 점토광물중(粘土鑛物中)에서도 규반비(珪礬比)가 약(約)1인 Allophane과 Imogolite가 가장 많은 PCP를 흡착(吸着)하며, 이 흡착현상(吸着現象)은 PCP와 점토광물간(粘土鑛物間)의 dipole-dipole interaction에 의하여 일어난다. Hexane 용액(溶液)에서 PCP가 점토광물(粘土鑛物)에 의하여 흡착(吸着)될 때는 점토광물(粘土鑛物)의 전표면적(全表面積)보다 표면성질(表面性質) 및 교환성(交煥性) 양(陽) ion에 의(依)하여 흡착량(吸着量)이 좌우(左右)되었다.

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