Adsorption Equilibrium, Kinetics, Thermodynamics and Dynamic Separation of Magnesium and Calcium Ions from Industrial Wastewater by New Strong Acid Cation Resin of SPVC

被引：6
作者：
Nuriddinova, Dilfuza [1 ]
Yusupov, Farkhod [2 ]
Berdimurodov, Elyor [1 ]
Yodgorov, Normahmat [2 ]
Mamanazarov, Murod [2 ]
机构：
[1] Karshi State Univ, Dept Nat Sci, Kuchabog 17, Karshi 180100, Uzbekistan
[2] Acad Sci Uzbek, Inst Gen & Nonorgan Chem, Feruza 39, Tashkent 100180, Uzbekistan
来源：
PAKISTAN JOURNAL OF ANALYTICAL & ENVIRONMENTAL CHEMISTRY | 2021年 / 22卷 / 01期
关键词：
Magnesium and calcium ions; Dynamic separation; Kinetics; Adsorption equilibrium; Strong acid cation resin; EXCHANGE; REMOVAL;
D O I：
10.21743/pjaec/2021.06.13
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
In the research work, the adsorption equilibrium, kinetics, thermodynamics and dynamic separation of magnesium and calcium ions from industrial wastewater by new strong acid cation resin of SPVC (sulphonated polyvinylchloride) were investigated. The sorption capacity of the studied resin was 3.78 mmol/g and 3.74 mmol/g for magnesium and calcium ions, respectively, according to Langmuir isotherm. It was found that the pseudo-first-order model was better fitted for the adsorption kinetics of magnesium and calcium ions on the resin. The dynamic separation results confirmed that the selected resin effectively separated magnesium and calcium ions from industrial wastewater in the dynamic condition. The change of the standard Gibbs free energy (Delta G degrees) and enthalpy (Delta H degrees), and entropy (Delta S degrees) were calculated. The obtained results confirmed that the adsorption of magnesium and calcium ions on the selected resin is endothermic.
引用
收藏
页码：127 / 138
页数：12
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