Application of layered double hydroxide-biochar composites in wastewater treatment: Recent trends, modification strategies, and outlook.
J Hazard Mater
; 420: 126569, 2021 10 15.
Article
en En
| MEDLINE
| ID: mdl-34280719
ABSTRACT
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.
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01-internacional
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MEDLINE
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Carbón Orgánico
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Aguas Residuales
Idioma:
En
Revista:
J Hazard Mater
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SAUDE AMBIENTAL
Año:
2021
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Article