Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)
- Volume 29 Issue 2
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- Pages.130-136
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- 1996
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- 0367-6315(pISSN)
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- 2288-2162(eISSN)
Determination of Refreshing Time of Natural Zeolite Used for Livestock Waste Water Clearing Based on Electrical Conductivity
축산폐수(畜産廢水) 처리시(處理時) 전기전도도(電氣傳導度)를 기준(基準)한 천연(天然) Zeolite의 교환시기(交換時期) 결정(決定)
- Choi, Jyung (Dep. of Agricultural Chemistry, Kyungpook National University) ;
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Seo, Young-Jin
(Dep. of Agricultural Chemistry, Kyungpook National University) ;
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Lee, Dong-Hoon
(Dep. of Agricultural Chemistry, Kyungpook National University)
- Published : 1996.06.30
Abstract
This study was carried out easily to determine the refreshing time of natural Zeolite used for the clearing of Livestock waste water and to investigate the relationship between EC of solution and adsorption amount on Zeolite. During the adsorption reaction, EC of supernatant solution decreased till the equilibrium was reached and kept a constant level after it. EC was greatly decreased with the concentration of solution and the magnitude of adsorbent. Decrease in EC of suspension was found to be lesser in addition of Na-Zeolite than Ca-Zeolite. EC change of Livestock waste water was shown to be similar tendency to that of the simulated waste water. On the cumulative adsorption isotherm, the EC of suspension increased until the EC value of the initial solution as the increase in treatment times. Therefore, it is apparent that the exchange point of natural zeolite should be in the vicinity of the EC value of initial waste water.
EC(Electrical conductivity) meter를 이용(利用)하여 폐수(廢水) 처리제(處理劑)로 사용(使用)된 천연(天然) Zeolite의 교환시기(交換時期)를 쉽고 간편(簡便)하게 결정(決定)하고자 상징액(上澄液)의 EC변화(變化)와 Zeolite에 의한 이온의 흡착반응(吸着反應)과의 관계(關係)를 조사(調査)하였다. 용액중(溶液中)의 양이온이 Zeolite에 흡착(吸着)됨에 따라 상징액(上澄液)의 EC는 흡착평형(吸着平衡) 시(時)까지 감소(減少)하였으며 그 이후(以後)는 일정(一定)한 EC를 유지(維持)하였다. 시료량(試料量) 및 첨가용액(添加溶液)의 농도(濃度)가 증가(增加)할수록