Sorption Properties of Hydrolytic Lignin from Sunflower Husk towards Cr(VI) Ions
O. V. PATRUSHEVA1, V. N. VOLKOVA1, A. V. PERFILEV2, S. B. YARUSOVA2,3, V. A. SHALANIN1, L. A. ZEMNUKHOVA1,3
1Far-Eastern Federal University, Vladivostok, Russia
2Vladivostok State University of Economics and Service, Vladivostok, Russia
3Institute of Chemistry, Far-Eastern Branch, Russian Academy of Sciences, Vladivostok, Russia
Keywords: гидролизный лигнин, кинетика сорбции, подсолнечная шелуха, сорбция, тяжелые металлы, хром, hydrolytic lignin, sorption kinetics, sunflower husk, sorption, heavy metals, chromium
Pages: 195-202
Abstract
The composition and morphology of hydrolytic lignin obtained from sunflower husk are studied before and after alkaline modification. The sorption properties of hydrolytic lignin towards Cr(VI) ions were studied under static conditions (at the solid to liquid phase ratio 1 : 1200, and a temperature of 20 °C) from the aqueous solutions of potassium dichromate with different initial concentrations of Cr(VI) ions (0.05-1.0 mg/L). Sorption kinetics was studied, and the analysis of the integral kinetic curves of sorption was carried out in accordance with chemical kinetic models.
DOI: 10.15372/CSD2020220
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