천연 제올라이트를 이용한 고농도의 칼슘이온 제거: 공존양이온 및 재생의 영향Concentrated Calcium Ion Removal using Natural Zeolites : Effects of Coexisting Cations and Regeneration
- Authors
- 안봉규; 오재일
- Issue Date
- 2003
- Publisher
- 대한상하수도학회
- Keywords
- calcium ion; zeolite; coexisting cations; regeneration; industrial wastewater; 칼슘이온; 제올라이트; 공존 양이온; 재생; 산업폐수
- Citation
- 상하수도학회지, v.17, no.3
- Journal Title
- 상하수도학회지
- Volume
- 17
- Number
- 3
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/32193
- ISSN
- 1225-7672
2287-822X
- Abstract
- Calcium exchange by natural zeolite was investigated in relation to the coexistence of other cation (Na+and/or K+). Although some zeolite (e.g., clinoptilolite) have a good affinity and selectivity for calcium ions,other cations in the solution have a negative impact on the calcium exchange. The exchange capacitydecreased significantly according to the increase of Na+ and/or K+ concentrations, however the decreasingextent was not similar between two different ion species. It was estimated that K+ possessed more affinitywas tested as the regeneration brine, and found that 3.8% of NaCl showed the optimal concentration fordesorbing calcium ions.
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