Key Laboratory for Water Quality and Conservation of Pearl River Delta, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, PR China.
Key Laboratory for Water Quality and Conservation of Pearl River Delta, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, PR China; Guangzhou University-Linköping University Research Center on Urban Sustainable Development, Guangzhou University, Guangzhou 510006, PR China.
Sci Total Environ. 2021 Jun 15;773:145535. doi: 10.1016/j.scitotenv.2021.145535. Epub 2021 Feb 3.
Many industries such as iron and steel metallurgy, copper and zinc smelting, the battery industry, and cement manufacturing industries discharge high concentrations of fluoride-containing wastewater into the environment. Subsequently, the discharge of high fluoride effluent serves as a threat to human life as well as the ecological ability to sustain life. This article analyses the advantages and drawbacks of some fluoride remediation technologies such as precipitation and flocculation, membrane technology, ion exchange technology, and adsorption technology. Among them, adsorption technology is considered the obvious choice and the best applicable technology. As such, several adsorbents with high fluoride adsorption capacity such as modified alumina, metal oxides, biomass, carbon-based materials, metal-organic frameworks, and other adsorption materials including their characteristics have been comprehensively summarized. Additionally, different adsorption conditions of the various adsorbents, such as pH, temperature, initial fluoride concentration, and contact time have been discussed in detail. The study found out that the composite synergy between different materials, morphological and structural control, and the strengthening of their functional groups can effectively improve the ability of the adsorbents for removing fluoride. This study has prospected the direction of various adsorbents for removing fluoride in wastewater, which would serve as guiding significance for future research in the field.
许多行业，如钢铁冶金、铜锌冶炼、电池工业和水泥制造业，都会向环境中排放高浓度含氟废水。随后，高氟废水的排放不仅对人类生活构成威胁，也对维持生命的生态能力构成威胁。本文分析了沉淀和絮凝、膜技术、离子交换技术和吸附技术等一些除氟技术的优缺点。其中，吸附技术被认为是明显的选择和最佳适用技术。因此，综合总结了具有高氟吸附能力的几种吸附剂，如改性氧化铝、金属氧化物、生物质、碳基材料、金属有机骨架等，以及其他吸附材料的特性。此外，还详细讨论了各种吸附剂的不同吸附条件，如 pH 值、温度、初始氟浓度和接触时间。研究发现，不同材料之间的复合协同作用、形态和结构控制以及功能基团的强化可以有效地提高吸附剂去除氟化物的能力。本研究展望了各种废水除氟吸附剂的发展方向，为该领域的未来研究提供了指导意义。
