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Studies on sorption isotherm models of ion exchange modified acrylic fibers

机译:离子交换改性丙烯酸纤维的吸附等温线模型研究

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The sorption behavior, favorability, shape and thermodynamic parameters of Cu(II), Ni(II), Pb(II), and Fe(III) ions sorption onto the ion exchage acrylic fiber were studied by applying Langmuir, Freundlich, Dubinin-Radushkevich and Redlich-Peterson models. Analytical studies from sorption isotherms proved that sorption process follows mono layer adsorption mechanism. Gibbs free energy was spontaneous for all interactions. The adsorption processes all exhibited endothermic enthalpy values and were accompanied by increasing in entropy. The activation energies for the sorption of metal ions on aminated acrylic fiber were at the same order of magnitude as the activation energy of ion exchange.
机译:研究了Langmuir,Freundlich,Dubinin-Radushkevich对Cu(II),Ni(II),Pb(II)和Fe(III)离子在离子交换丙烯酸纤维上的吸附行为,吸附性,形状和热力学参数。和Redlich-Peterson模型。从吸附等温线的分析研究表明,吸附过程遵循单层吸附机理。吉布斯的自由能是所有相互作用的自发性。吸附过程均表现出吸热焓值,并伴随着熵的增加。在胺化的丙烯酸纤维上吸附金属离子的活化能与离子交换的活化能处于相同数量级。

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