Adsorption of Copper(II) and Lead(II) Ions from Aqueous Solutions by Porcellanite

A.Y. Hmood; T.E. Jassim

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Adsorption of Copper(II) and Lead(II) Ions from Aqueous Solutions by Porcellanite

机译：钙钛矿对水溶液中铜离子和铅离子的吸附

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This work is concerned with one of the applications of adsorption behavior from aqueous solution. It deals with the adsorption of copper (II) and lead (II) ions on the surface of porcellanite , which is locally available in Iraq. The purpose of this study is to search for surfaces that are highly applicable for copper (II) and lead (II) ions adsorption to treat the pollution of aqueous solution in nature. The different variables affecting the adsorption capacity of the porcellanite such as contact time, initial metal ion concentration in the feed solution, pH of the medium and temperature , were investigated on a batch process mode. The optimum contact time to attain equilibrium is 90 min for copper (II) ion, 30 min for lead (II) ion, and the pH values in the range of 2-10. The results showed the optimum pH for Cu (II) is 8 and for Pb (II) is 4. The experimental data of adsorption were fitted to two different isotherms, namely; Langmuir and Freundlich. These isotherms equations were applied at different temperatures. The results obtained showed that, the Langmuir isotherm equation is better fitted to the experimental data than the Freundlich isotherm equation. The thermodynamic parameters indicated that ΔH was endothermic, ΔG was a spontaneous process and ΔS was positive value.

机译：这项工作涉及从水溶液中吸附行为的应用之一。它处理了在伊拉克当地可用的钙钛矿表面上铜（II）和铅（II）离子的吸附。这项研究的目的是寻找非常适合吸附铜（II）和铅（II）离子的表面，以处理自然界中水溶液的污染。在分批处理模式下，研究了影响钙钛矿吸附能力的不同变量，例如接触时间，进料溶液中的初始金属离子浓度，介质的pH值和温度。达到平衡的最佳接触时间是铜（II）离子为90分钟，铅（II）离子为30分钟，pH值在2-10范围内。结果表明，Cu（II）的最佳pH为8，Pb（II）的最佳pH为4。吸附的实验数据拟合为两个不同的等温线，分别为： Langmuir和Freundlich。这些等温线方程式在不同温度下应用。所得结果表明，Langmuir等温线方程比Freundlich等温线方程更适合实验数据。热力学参数表明ΔH是吸热的，ΔG是自发过程，ΔS是正值。

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《International Journal of Marine Science》 |2015年第30期|共页
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A.Y. Hmood; T.E. Jassim;
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Adsorption of Copper(II) and Lead(II) Ions from Aqueous Solutions by Porcellanite

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