Removal of strontium ions from aqueous solution using hybrid membranes: Kinetics and thermodynamics

Zhicheng Chu; Junsheng Liu; Chengliang Han

doi:10.1016/j.cjche.2015.08.011

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Removal of strontium ions from aqueous solution using hybrid membranes: Kinetics and thermodynamics

分离科学与工程 | Updated：2026-01-06

- Removal of strontium ions from aqueous solution using hybrid membranes: Kinetics and thermodynamics
- Chinese Journal of Chemical Engineering Vol. 23, Issue 10, Pages: 1620-1626(2015)
- Affiliations：
  
  Key Laboratory of Membrane Materials & Processes, Department of Chemical and Materials Engineering, Hefei University,Hefei,China,230601
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2015.08.011
  CLC：
- Published：2015
- Accepted：
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Zhicheng Chu, Junsheng Liu, Chengliang Han. Removal of strontium ions from aqueous solution using hybrid membranes: Kinetics and thermodynamics[J]. Chin.J.Chem.Eng., 2015, 23(10): 1620-1626.
DOI：

Zhicheng Chu, Junsheng Liu, Chengliang Han. Removal of strontium ions from aqueous solution using hybrid membranes: Kinetics and thermodynamics[J]. Chin.J.Chem.Eng., 2015, 23(10): 1620-1626. DOI： 10.1016/j.cjche.2015.08.011.

摘要

Abstract

The removal of radionuclide from radioactive wastewater has captured much attention. Strontium-90 is one of the major radionuclides. To develop a new type of adsorbents to remove strontium ions from the radioactive wastewater

in this study

novel hybrid membranes were prepared and characterized. The adsorption kinetics

thermodynamic parameters of ΔG

ΔH and ΔS

as well as surface SEM and EDS images were used to investigate the removal of strontium ions from stimulated radioactive wastewater using the previously prepared hybrid membranes as efficient adsorbents. The study of kinetic model confirmed that the adsorption of strontium ions on these hybrid membranes followed the Lagergren pseudo-second order model. Moreover

it was proved that the adsorption of strontium ions on these samples was solely controlled by intraparticle diffusion. The negative values of ΔG and the positive values of ΔH indicated that the adsorption of strontium ions on samples A-D is a spontaneous and endothermic process in nature. Furthermore

surface SEM and DES images give significant evidence to confirm the existence of strontiumions on the surface of the adsorbed samples. These findings demonstrate that these hybrid membranes are promising adsorbents for the removal of strontium ions from aqueous solution and can be potentially applied in the adsorptive separation of radionuclides from the radioactive wastewater.

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Related Institution

Key Laboratory of Membrane Materials and Processes, Department of Chemical and Materials Engineering, Hefei University, 99 Jinxiu Avenue

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