Thermally Activated Brown and Black Coals as the Sorbents of Chromium(VI) from Aqueous Solutions

V. V. Golovina; A. O. Eremina; N. V. Chesnokov; A. A. Sobolev

doi:10.3103/S0361521918040043

Thermally Activated Brown and Black Coals as the Sorbents of Chromium(VI) from Aqueous Solutions

Авторы: Golovina V.V.¹, Eremina A.O.¹, Chesnokov N.V.¹, Sobolev A.A.¹
Учреждения:
1. Institute of Chemistry and Chemical Technology, Siberian Branch
Выпуск: Том 52, № 4 (2018)
Страницы: 240-246
Раздел: Article
URL: https://journals.rcsi.science/0361-5219/article/view/176647
DOI: https://doi.org/10.3103/S0361521918040043
ID: 176647

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Porous materials prepared from brown and black coals were used as sorbents for the extraction of chromium(VI) from aqueous solutions. They were compared with an AG-3 commercial sorbent. The effect of the acidity of reaction medium on the adsorption of chromium(VI) was established. The extraction of Cr(VI) from aqueous solutions reached a maximum in a range of pH 1.5–2.0. A kinetic study made it possible to determine equilibration times in the porous material–chromium(VI) solution systems.