Sorption of Copper Cations by Native and Modified Humic Acids
S. I. ZHEREBTSOV1, N. V. MALYSHENKO1, O. V. SMOTRINA1, L. V. BRYUKHOVETSKAYA1, Z. R. ISMAGILOV1,2
1Institute of Coal Chemistry and Material Science, Federal Research Centre of Coal and Coal Chemistry, Siberian Branch of the Russian Academy of Sciences, Sovetskiy Pr. 18, Kemerovo 650000
2Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Pr. Akademika Lavrentyeva 5, Novosibirsk 630090
Keywords: нативные и модифицированные гуминовые кислоты, сорбция катионов меди, емкость, ионный обмен, native and modified humic acids, sorption of copper cations, capacity, ion exchange
Abstract
The sorption of copper cations by native and modified humic acids obtained from brown coal of the Tisul deposit of the Kansk-Achinsk basin was studied using IR Fourier, 13С NMR spectroscopy in solid. The sorption capacity of humic acids was determined. It was shown that modification of humic acids by hydrogen peroxide causes the change of the functional composition and an increase in sorption capacity. The sorption of copper cations proceeds both via ion exchange mechanism and due to the formation of complexes with oxygen-containing groups and aromatic fragments.
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