Application of layered double hydroxide-biochar composites in wastewater treatment: Recent trends, modification strategies, and outlook
| Autor: | Hailan Yang, Xiaofei Tan, Qianzhen Fang, Shujing Ye, Yue Gao, Qinyi Lin, Zhongzhu Yang, Kaihua Yang, Junwu Zhou |
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| Rok vydání: | 2021 |
| Předmět: |
Environmental Engineering
Materials science Health Toxicology and Mutagenesis Intercalation (chemistry) 0211 other engineering and technologies 02 engineering and technology Wastewater 010501 environmental sciences engineering.material 01 natural sciences Catalysis law.invention chemistry.chemical_compound Adsorption law Biochar Hydroxides Environmental Chemistry Calcination Composite material Waste Management and Disposal 0105 earth and related environmental sciences 021110 strategic defence & security studies Ion exchange Layered double hydroxides Pollution chemistry Charcoal engineering Hydroxide |
| Zdroj: | Journal of Hazardous Materials. 420:126569 |
| ISSN: | 0304-3894 |
| DOI: | 10.1016/j.jhazmat.2021.126569 |
| Popis: | In recent years, layered double hydroxide-biochar (LDH-BC) composites as adsorbents and catalysts for contaminants removal (inorganic anions, heavy metals, and organics) have received increasing attention and became a new research point. It is because of the good chemical stability, abundant surface functional groups, excellent anion exchange ability, and good electronic properties of LDH-BC composites. Hence, we offer an overall review on the developments and processes in the synthesis of LDH-BC composites as adsorbents and catalysts. Special attention is devoted to the strategies for enhancing the properties of LDH-BC composites, including (1) magnetic treatment, (2) acid treatment, (3) alkali treatment, (4) controlling metal ion ratios, (5) LDHs intercalation, and (6) calcination. In addition, further studies are called for LDH-BC composites and potential areas for future application of LDH-BC composites are also proposed. |
| Databáze: | OpenAIRE |
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