Open AccessPreparation of Sulfonylcalix[4]arene-loaded XAD-7 Resin for Strontium(II) Adsorption
Author(s) -
Cong Liu,
Guofeng Su,
Tao Chen,
Muxuan Liang,
Laiping Zhao,
Dongxiang Zhang
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/267/3/032084
Subject(s) - adsorption , aqueous solution , exothermic reaction , chemistry , strontium , langmuir adsorption model , metal ions in aqueous solution , langmuir equation , exothermic process , metal , composite number , ion , langmuir , nuclear chemistry , inorganic chemistry , materials science , organic chemistry , composite material
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.