천연제올라이트를 이용한 고농도의 칼슘이온 제거:이온교환속도 및 이온교환능Concentrated Calcium Ion Removal Using Natural Zeolites: Kinetics and Isotherm
- Authors
- 안봉규; 오재일; 임남웅; 윤석민
- Issue Date
- 2003
- Publisher
- 대한상하수도학회
- Keywords
- 천연제올라이트; 칼슘이온; 이온교환속도; 등온흡착; 산업폐수; Natural zeolite; Calcium ion exchange; Kinetics; Isotherm; Industrial wastewater
- Citation
- 상하수도학회지, v.17, no.1
- Journal Title
- 상하수도학회지
- Volume
- 17
- Number
- 1
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/32298
- ISSN
- 1225-7672
2287-822X
- Abstract
- The concentrated calcium removal from industrial wastewater by natural zeolite was examined to reduce inhibitory effects of those ions on the biological treatment in down-stream. It is well known that natural zeolite possesses good cation exchange capacity. Kinetic studies by using a batch-type methods demonstrated that the adopted particle size(1-2, 2-2.8, 2.8-4mm) of zeolites showed similar exchange trends of calcium ions and showed relatively fast exchange reaction within 1 hour in spite of various zeolite dosages. The influence of the temperature on the ion-exchange capacity (isotherm) was examined. It was found that calcium exchange capacity(4.464 mg-Ca2+/g-zeolite) at low temperature of 5℃ was double up to 9.225mg -Ca2+/g-zeolite at the range of 22-40℃. However, ion exchange efficiencies were similar at each condition of pH 6, 7, 8, 10.
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