1. Recent advances of application of bentonite-based composites in the environmental remediation.
- Author
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Zhang, Bo, Zhu, Weiyu, Hou, Rongbo, Yue, Yanxue, Feng, Jiashuo, Ishag, Alhadi, Wang, Xiao, Qin, Yan, and Sun, Yubing
- Subjects
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BENTONITE , *ENVIRONMENTAL remediation , *ADSORPTION (Chemistry) , *POLLUTANTS , *MICROPOLLUTANTS , *PLASTIC marine debris , *HEAVY metals , *ADSORPTION capacity - Abstract
Bentonite-based composites have been widely utilized in the removal of various pollutants due to low cost, environmentally friendly, ease-to-operate, whereas the recent advances concerning the application of bentonite-based composites in environmental remediation were not available. Herein, the modification (i.e., acid/alkaline washing, thermal treatment and hybrids) of bentonite was firstly reviewed; Then the recent advances of adsorption of environmental concomitants (e.g., organic (dyes, microplastics, phenolic and other organics) and inorganic pollutants (heavy metals, radionuclides and other inorganic pollutants)) on various bentonite-based composites were summarized in details. Meanwhile, the effect of environmental factors and interaction mechanism between bentonite-based composites and contaminants were also investigated. Finally, the conclusions and prospective of bentonite-based composites in the environmental remediation were proposed. It is demonstrated that various bentonite-based composites exhibited the high adsorption/degradation capacity towards environmental pollutants under the specific conditions. The interaction mechanism involved the mineralization, physical/chemical adsorption, co-precipitation and complexation. This review highlights the effect of different functionalization of bentonite-based composites on their adsorption capacity and interaction mechanism, which is expected to be helpful to environmental scientists for applying bentonite-based composites into practical environmental remediation. • The modification of bentonite was firstly reviewed. • Recent advances of adsorption of organics, heavy metals and radionuclides on bentonite were summarized. • Interaction mechanism of bentonite and contaminants were investigated. • The conclusions and prospective of bentonite-based composites were proposed. • This review is expected to be helpful into practical environmental remediation. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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