U(VI) ion adsorption thermodynamics and kinetics from aqueous solution onto raw sodium feldspar and acid-activated sodium feldspar

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成果类型：

期刊论文

作者：

Ding, Dexin*;Fu, Pingkun;Li, Le;Xin, Xin;Hu, Nan;...

通讯作者：

Ding, Dexin

作者机构：

[Ding, Dexin; Li, Guangyue; Hu, Nan; Xin, Xin; Fu, Pingkun] Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.

[Li, Le] Univ South China, Sch Publ Hlth, Hengyang 421001, Peoples R China.

通讯机构：

[Ding, Dexin] U

Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.

语种：

英文

关键词：

acid activated sodium feldspar;adsorbent;mercury;raw sodium feldspar;sodium;sulfuric acid;unclassified drug;uranium;acidification;adsorption kinetics;aqueous solution;article;comparative study;concentration (parameters);environmental temperature;Freundlich model;Langmuir model;mathematical model;pH;porosity;thermodynamics

期刊：

Journal of Radioanalytical and Nuclear Chemistry

ISSN：

0236-5731

年：

2014

卷：

299

期：

页码：

1903-1909

DOI：

10.1007/s10967-013-2903-2

基金类别：

Acknowledgments This research was supported by the National Natural Science Foundation of China (Grant Nos. 91326106, 11305087), the Scientific Research Foundation of Science and Technology Department of Hunan Province (Grant Nos. 2010GK2025, 2012SK3154), the Scientific Research Foundation of Education Department of Hunan Province (Grant No. 10A103).

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本校为第一且通讯机构

院系归属：

核资源工程学院

公共卫生学院

摘要：

The raw sodium feldspar (RSF) is activated with the concentrated sulfuric acid solution and the acid activated sodium feldspar (AASF) is obtained. The results obtained from the mercury intrusion method show that the acidification can increase the porosity and the specific surface area. The effects of the initial pH, contact time and ambient temperature on the adsorption of U(VI) ions are investigated in a batch process. The adsorption efficiency amounts to the highest at pH 6 and the adsorption equilibrium is reached in 600 min. The pseudo-second-order model is found to be more suitable for th...

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U(VI) ion adsorption thermodynamics and kinetics from aqueous solution onto raw sodium feldspar and acid-activated sodium feldspar

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