[1]Zhan Yuzhong,ZHU Xiaoli,LI Lingling,et al.Study on adsorption and fluorine removal of silica gel-supported zirconia[J].Journal of Zhengzhou University (Engineering Science),2007,28(04):20-23.[doi:10.3969/j.issn.1671-6833.2007.04.006]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
28卷
Number of periods:
2007年04期
Page number:
20-23
Column:
Public date:
1900-01-01
- Title:
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Study on adsorption and fluorine removal of silica gel-supported zirconia
- Author(s):
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Zhan Yuzhong; ZHU Xiaoli; LI Lingling; etc
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- Keywords:
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Fluoride removal; silica gel loaded zirconia; adsorption kinetics; Adsorption isotherms
- CLC:
-
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- DOI:
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10.3969/j.issn.1671-6833.2007.04.006
- Abstract:
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The adsorption and fluorine removal performance of silica gel-supported zirconia was studied by static adsorption method, and the effects of solution pH, adsorbent dosage, initial concentration, and adsorption time at different temperatures and initial concentrations on adsorption were investigated. The results show that the pH of the solution has a great influence on adsorption, and the pH value of the maximum adsorption is 3~4.The adsorption rate can be described by the quasi-secondary kinetic equation, and the adsorption equilibrium can be reached within 200 min. The adsorption isotherm conforms to the Langmuir equation, and the calculated adsorption equilibrium constant is 1.31 L/mg, and the saturated adsorption capacity is 7.46 mg/g, indicating that the adsorbent has a large affinity for fluorine and a high saturation adsorption capacity.