Preparation of Sulfonylcalix[4]arene-loaded XAD-7 Resin for Strontium(II) Adsorption

2019 3rd International Workshop on Renewable Energy and Development

能源学;生态环境科学

Liu, Cong^1 ; Su, Guofeng^1 ; Chen, Tao^1 ; Liang, Manchun^1 ; Zhao, Liting^2 ; Zhang, Dongxiang^2

Institute of Public Safety Research, Tsinghua University, Beijing

100084, China^1

School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing

102446, China^2

关键词: Adsorption capacities;    Contact time;    Exothermic process;    Langmuir models;    pH value;    Thermodynamic studies;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/267/3/032084/pdf
DOI  :  10.1088/1755-1315/267/3/032084

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Sulfonylcalix[4]arene-loaded XAD-7 Resin was prepared and used as an adsorbent for removal of Strontium(II) from aqueous solutions. The adsorption of the metal ions onto SCA-XAD-7 as a function of pH, contact time, metal ions concentration, temperature, and reuses was investigated. The adsorption capacity of SCA-XAD-7 composite towards tested ions reached a maximum at pH values of ∼6. The adsorption has reached equilibrium within 7 h. The adsorption isotherms were well fitted by the Langmuir model, and the maximum values of adsorption capacity of the adsorbent were 28.87 mg⋅g-1. Thermodynamic studies imply the adsorption was a spontaneous and exothermic process in nature.