新型强酸性阳离子树脂SPVC对工业废水中镁、钙离子的吸附平衡、动力学、热力学及动态分离

IF 0.4 Q4 CHEMISTRY, ANALYTICAL

Pakistan Journal of Analytical & Environmental Chemistry Pub Date : 2021-06-23 DOI:10.21743/pjaec/2021.06.13

E. Berdimurodov

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引用次数: 5

摘要

研究了新型强酸阳离子树脂磺化聚氯乙烯(SPVC)对工业废水中镁、钙离子的吸附平衡、动力学、热力学和动态分离。根据Langmuir等温线，树脂对镁离子和钙离子的吸附量分别为3.78 mmol/g和3.74 mmol/g。结果表明，拟一阶模型更适合于镁离子和钙离子在树脂上的吸附动力学。动态分离结果证实了所选树脂在动态条件下能有效分离工业废水中的镁离子和钙离子。计算了标准吉布斯自由能(G)、焓(H)和熵(S)的变化。所得结果证实了所选树脂对镁离子和钙离子的吸热吸附。

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

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 (G) and enthalpy (H), and entropy (S) were calculated. The obtained results confirmed that the adsorption of magnesium and calcium ions on the selected resin is endothermic.

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来源期刊

Pakistan Journal of Analytical & Environmental Chemistry CHEMISTRY, ANALYTICAL-

CiteScore

1.10

自引率

16.70%

发文量

审稿时长

15 weeks