Applied Biological Chemistry
- Volume 34 Issue 2
- /
- Pages.125-129
- /
- 1991
- /
- 2468-0834(pISSN)
- /
- 2468-0842(eISSN)
Adsorption of methyl 2-benzimidazole carbamate on clay minerals
점토광물(粘土鑛物)에 의(依)한 methyl 2-benzimidazole carbamate의 흡착(吸着)
- Kim, Bark-Jung (Department of Agricultural Chemistry, Kyungpook National University) ;
- Park, Man (Department of Agricultural Chemistry, Kyungpook National University) ;
- Hur, Nam-Ho (Department of Agricultural Chemistry, Kyungpook National University) ;
- Choi, Jung (Department of Agricultural Chemistry, Kyungpook National University)
- Published : 1991.06.30
Abstract
This experiment was carried out to examine the MBC adsorption on clay minerals by the slurry method. The adsorption of MBC on Kaolinite nearly reached equilibrium after shaking lot 2hrs. but on Bentonite and Zeolite, 10hrs., respectively. The adsorption amount was in the order of Zeolite>Bentonite>Kaolinite, and Na-saturated clay mineral adsorbed more MBC than Mg-saturated clay mineral did. The more the amount of clay minerals, the more MBC was adsorbed by clay minerals, whereas the amount of MBC adsorbed per unit gram of clay minerals reduced and Kd value cf MBC was greatest on the Na-Zeolite. The lower the pH of the water-clay system at each concentration, the more MBC was adsorbed by clay minerals. The pH dependence of the adsorption of MBC may be due to protonation of MBC in acid solution.
상괴중(上壞中)에서 methyl 2-benzimidazole carbamate(MBC)의 흡착양상(吸着樣相)에 관(關)한 기초자과(基礎資科)를 얻고자 Kaolinite, Bentonite 및 Zeolite에 Na와 Mg를 포화(飽和)시키고 MBC를 첨가(添加)하여 습식(濕式)진(振)탕법(法)으로 흡착실험(吸着實驗)을 행(行)하였다. MBC점토광물(粘土鑛物)의 현탁류(懸濁流)에 있어서 Kaolinite는 2시간(時間), Bentonite와 Zeolite는 10시간(時間) 진탕 반응(反應)으로 각각(各各) 반응평형(反應平衡)에 도달(到達)하였다. MBC의 흡착량(吸着量)은 Zeolite>Bentonite>Kaolinite의 순(順)이었으며 포화(飽和)시킨 각(各) 이온의 종류간(種類間)에는 Mg보다 Na포화점토(飽和粘土)가 다소(多少) 컸다. MBC의 농도(濃度)가 높을수록 흡착량(吸着量)은 증가(增加)하였으며, 점토량(粘土量)이 많아질수록 MBC의 흡착량(吸着量)은 증가(增加)하였으나, Kd치(値)는 오히려 감소(減少)되었으며, Na-Zeolite가 가장 높은 Kd치(値)를 나타냈다. 각(各) 농도(濃度)에서 현탁류(懸濁流)의 pH가 낮을수록 MBC의 흡착량(吸着量)은 증가(增加)하였다. 따라서 점토광물(粘土鑛物)에 의(依)한 MBC흡착(吸着)은 상괴중(上壞中)에 존재(存在)하는 점토광물(粘土鑛物)의 종류(種類))와 함량(含量), ph 및 CEC등에 영향(影響)을 받을 것으로 사료(思料)된다.