Open AccessPreparation of Selective Adsorption Materials Based on AI203 and their Adsorption Properties for Sr2+
Author(s) -
LI Long-xian,
Zongliang Du,
Yanjun Wang,
Hongjun Cao,
Yang Yang
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2009/1/012020
Subject(s) - adsorption , freundlich equation , ion exchange , langmuir , ion exchange resin , chemical engineering , composite number , particle size , langmuir adsorption model , materials science , selectivity , chemistry , ion , raw material , nuclear chemistry , inorganic chemistry , organic chemistry , composite material , catalysis , engineering
Aiming at the selective adsorption treatment of 90 Sr in radioactive waste liquid, we need to synthesize MnO 2 and other inorganic ion exchanger with high selectivity for Sr 2+ in the waste water, find the best material ratio, and prepare the raw material liquid. The feed liquid is blown into the hot dimethylsilicone oil by the self-made spherical particle preparation device and loaded on the Al 2 O 3 matrix. The composite adsorbent with appearance and size similar to ion exchange resin was prepared. The physicochemical properties of the composite adsorbent were characterized by SEM,FT-IR and XRD.Different concentrations of strontium ion solution were prepared to study the change of adsorption capacity of Sr 2+ at different time. The effects of pH on the adsorption properties of the adsorption properties under the influence of different initial concentrations and different coexisting ions were studied. According to the experimental data, the pseudo first order and quasi second order kinetic first order and quasi second order kinetic equations were used to fit the adsorption process. Two typical adsorption isotherm models, Langmuir and Freundlich models, were used to describe the adsorption process of Sr 2+ by composite adsorbents.