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Zeolitic material prepared by hydrothermal treatment of brown coal fly ash was used for sorption separation of Co2+ and Zn2+ ions from single and binary solutions. Adsorption in single systems was rapid, pH dependent and follow the Langmuir isotherm. 3D sorption surfaces revealed competitive effects and mutual interactions between Co2+ and Zn2+ and significant preference for Zn2+ in binary system...
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