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Investigation of materials for reactive permeable barrier in removing cadmium and chromium(VI) from aquifer near a solid domestic waste landfillстатья Исследовательская статья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 12 января 2022 г.
- Авторы: Safonov Alexey, Popova Nadezhda, Andrushenko Natalia, Boldyrev Kirill, Yushin Nikita, Zinicovscaia Inga
- Журнал: Environmental Science and Pollution Research
- Том: 28
- Номер: 4
- Год издания: 2021
- Издательство: Springer Nature
- Местоположение издательства: Switzerland
- Первая страница: 4645
- Последняя страница: 4659
- DOI: 10.1007/s11356-020-10743-x
- Аннотация: The sorption characteristics of raw and biofilm-coated materials: vermiculite, lightweight expanded clay aggregate (LECA),perlite, zeolite, and shungite toward Cd and Cr(VI) ions were investigated to evaluate the possibility of their use as filtrationbarrier in the aquifer near a solid domestic waste landfill. The effectiveness of Cr(VI) removal by the raw materials changed in thefollowing order: shungite > zeolite > perlite > vermiculite > LECA and for Cd: zeolite > shungite > vermiculite > perlite > LECA.After biofilm formation on the surface of the materials, the sorption capacity increased in some (perlite, LECA), while in others(zeolite) it was reduced. Four kinetic models were used to describe the experimental data. Mechanisms of metal removal wereproposed: for Cr(VI), a characteristic combination of sorption processes was suggested, while the removal of Cd ions could occurby ion exchange and by complexation on the surface of the sorbent. Cr(VI) reduction by living bacterial cells forming a biofilmon the sorbent surface was assessed.
- Добавил в систему: Сафонов Алексей Владимирович