Impurity partitioning in Nafion and ceramic separators used for purification of spent chromium plating solutions
作者： Kuo-Lin Huang , Thomas M Holsen , J.R Selman
DOI: 10.1016/S0376-7388(02)00384-8
关键词: Partition coefficient 、 Chemistry 、 Ceramic 、 Chromic acid 、 Adsorption 、 Salt (chemistry) 、 Nafion 、 Freundlich equation 、 Inorganic chemistry 、 Membrane
摘要: Abstract Cationic partitioning (Cu(II), Ni(II), and Fe(III)) into Nafion ceramic membranes equilibrated with different salt solutions was investigated in this study. Both single-ion multicomponent a Nafion-117 membrane 2.12 M chromic acid solution well characterized the Freundlich isotherm. The affinity for Fe(III)>Ni(II)>Cu(II). partition coefficients of divalent cations experiments were similar to those whereas trivalent cation decreased. Among factors investigated, pH had most significant influence on coefficients, especially range about 0.5–1.5. In contrast, temperature 25–55 °C an insignificant effect. diaphragm equal porosity (0.4) all species implying that not adsorbed its surface.
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