Phosphate removal ability of biochar/MgAl-LDH ultra-fine composites prepared by liquid-phase deposition

  • Ming Zhang
  • , Bin Gao*
  • , Ying Yao
  • , Mandu Inyang
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

293 Citations (Scopus)

Abstract

Morphological structures and adsorption properties of biochar/MgAl-LDH ultra-fine composites prepared by liquid-phase deposition have been determined in laboratory. X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray analysis (EDS), and Fourier transform infrared (FTIR) were used to characterize the biochar based ultra-composites. The XRD and FTIR data indicated that the biochar/MgAl-LDHs ultra-fine composites can successfully be obtained by liquid-phase deposition. The SEM images showed the dispersion of colloidal and nanosized LDH flakes on the carbon surfaces within the biochar matrix. The thickness and size of single LDH platelet are 20-40. nm and 100-300. nm. Batch sorption experiments were also conducted and the results indicated that the biochar/MgAl-LDHs ultra-fine composites is an effective sorbent for the removal of phosphate from aqueous solutions.

Original languageEnglish
Pages (from-to)1042-1047
Number of pages6
JournalChemosphere
Volume92
Issue number8
DOIs
Publication statusPublished - Aug 2013
Externally publishedYes

Keywords

  • Adsorption
  • Biochar
  • Layered double hydroxide
  • Liquid-phase deposition
  • Phosphate
  • Ultra-fine composites

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