NEW ANION EXCHANGERS AND THEIR SORPTION PROPERTIES TOWARD CHROMIUM (VI) AND VANADIUM (V) IONS

Kanat Sadykov, Nesiphan Bektenov, Tolegen Chalov, Katira Serikbayeva, Yekaterina Kuznetsova, Fatima Yerbolova

2025

Data confidence 70 medium

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Abstract

Introduction.This study focuses on the synthesis of a novel anion-exchange material based on glycidyl methacrylate (GMA), methyl methacrylate (MMA), and acrylonitrile (AN), as well as on its ability to sorb heavy metal ions. The dependence of ion-exchanger properties on solution concentration, pH value, and contact time was investigated.The purpose of the work:To determine the structure, chemical stability, and optimal conditions for the efficient sorption of chromium (VI) and vanadium (V) ions by the new anion exchanger. Results and discussions: The optimal synthesis conditions were found to be 24 hours, a molar ratio of 1:6, and a temperature of 80 °C. The maximum sorption capacity was 509.2 mg/g for vanadium ions at pH 2.8 and 561.6 mg/g for chromium ions at pH 4.5. Kinetic studies showed that equilibrium was reached within 1 hour for vanadium and 2 hours for chromium. Conclusion: The new anion exchanger can be effectively applied in non-ferrous and ferrous metallurgy, as well as for the treatment of industrial wastewater from heavy metal ions.