Abstract
The sorption of some nonferrous metals (Cu, Ni, Zn, Pb) from aqueous solutions by granular sorbents based on activated carbon BAU-A has been studied. The surface modification of BAU-A has been conducted by exposing it to a nitrating atmosphere (NOx–air or HNO3 (vapors)–air) at a temperature of 90–110°C for 4 h and impregnating it with 10 wt % of triethanolamine (TEA), tetraethylenediamine (TEDA), or carbamide (CH4N2O). It has been found that modification of BAU-A leads to a decrease in the sorption capacity of this material with respect to Cu2+, Ni2+, and Zn2+ and an increase with respect to Pb2+.
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Original Russian Text © M.P. Gorbacheva, E.P. Krasavina, L.V. Mizina, I.A. Rumer, V.B. Krapukhin, V.V. Kulemin, V.A. Lavrikov, S.A. Kulyukhin, 2017, published in Khimicheskaya Tekhnologiya, 2017, Vol. 18, No. 6, pp. 283–288.
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Gorbacheva, M.P., Krasavina, E.P., Mizina, L.V. et al. Use of Modified Sorbents Based on Activated Carbon BAU-A for the Extraction of Nonferrous Metals from Aqueous Solutions. Theor Found Chem Eng 52, 725–729 (2018). https://doi.org/10.1134/S0040579518040115
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DOI: https://doi.org/10.1134/S0040579518040115