Adsorption of chromate ions (VI) from solutions formed during processing of high-chromium ilmenite concentrate using interpolymer systems

G.A. Toilanbay, Mrutyunjay Panigrahi, Arman Baishibekov, Małgorzata Rutkowska-Gorczyca

2024

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DOI 10.31643/2024.18
Data confidence 85 high
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Abstract

The paper presents the results of the sorption of chromium (VI) ions from solutions, obtained during the processing of high-chromium ilmenite concentrate using the simultaneous co-presence of anionite (AB-17-8(Na)) and cationite (KU-2-8(Na)). Under static conditions, the sorption behavior of two polymer hydrogels was studied at different molar ratios of polymers to determine their sorption capacity towards chromium (VI) ions. The investigated polymer systems were formed at molar ratios of KU-2-8(Na) and AB-17-8(Na), respectively: 6:0, 4:2, 3:3, 2:4 и0:6. The sorption efficiency of interpolymer hydrogel systems towards chromate ions (VI) in solutions obtained during the processing of ilmenite concentrate has been studied. An interpolymer system with two types of hydrogels: anionic (AB-17-8(Na)) and cationic (KU-2-8(Na)) was studied. Different molar ratios of these polymers were tested to evaluate their combined effect on the sorption of chromate ions. A Shimadzu atomic absorption spectrometer was used to analyze the samples. The results showed that the simultaneous presence of the two polymers in the system enhanced the efficiency of the sorption process compared to using either of them individually. It was also demonstrated that the best sorption occurred when both polymers were present, with optimum performance at a ratio of 2:4. The combined presence of anionic and cationic polymers enhances the sorption process of chromium compared to the use of either polymer alone.