Abstract
The sorption of lead by an impregnated type sorbent based on the phosphorylpodand, 1,8-bis[2-(diphenylphosphorylmethyl)phenoxy]-3,6-dioxaoctane, was studied. Sorption isotherms were plotted, as well as the data on kinetics, selectivity, and dynamics of sorption were obtained. The phosphorylpodand-based sorbent attains the sorption equilibrium of lead extraction with a high rate. The maximum sorbent capacity was achieved when the equilibrium concentration of lead in solutions was more than 150 mg L−1. The 1,8-bis[2-(diphenyl-phosphorylmethyl)phenoxy]-3,6-dioxaoctane-based sorbent shows a high selectivity for lead sorption from neutral solutions. The output curve of lead sorption was plotted. The dynamic exchange capacity and total dynamic capacity of the obtained sorbent were determined.
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This work was financially supported by the Russian Foundation for Basic Research and the Sevastopol city (Project No. 18-43-920004 “r_a” and, partially, Project No. 18-29-24069), and also as a part of the State Task (Topic “Oceanological Processes” No. 0827-2020-0003) and State Tasks of the 2020 year for the A. N. Frumkin Institute of Physical Chemistry and Electrochemistry and the Institute of Physiologically Active Compounds of the Russian Academy of Sciences.
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Bezhin, N.A., Dovhyi, I.I., Baulin, D.V. et al. Physicochemical regularities of lead sorption by an impregnated type sorbent based on phosphorylpodand. Russ Chem Bull 69, 2281–2285 (2020). https://doi.org/10.1007/s11172-020-3042-x
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DOI: https://doi.org/10.1007/s11172-020-3042-x