title: Phosphate removal ability of biochar/MgAl-LDH ultra-fine composites prepared by liquid-phase deposition.
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.
authors.affiliation: Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL 32611, USA.
authors.forename: Ming
authors.initials: M
authors.lastname: Zhang
authors.forename: Bin
authors.initials: B
authors.lastname: Gao
authors.forename: Ying
authors.initials: Y
authors.lastname: Yao
authors.forename: Mandu
authors.initials: M
authors.lastname: Inyang
mesh_terms: D000327:Adsorption; D000535:Aluminum / Q000032:analysis / Q000737:chemistry; D002606:Charcoal / Q000032:analysis / Q000737:chemistry*; D003102:Colloids / Q000032:analysis / Q000737:chemistry; D006878:Hydroxides / Q000032:analysis / Q000737:chemistry*; D007700:Kinetics; D008274:Magnesium / Q000032:analysis / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D053758:Nanoparticles / Q000032:analysis / Q000737:chemistry; D010710:Phosphates / Q000032:analysis / Q000737:chemistry*; D013052:Spectrometry, X-Ray Emission; D017550:Spectroscopy, Fourier Transform Infrared; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D003102:Colloids; D006878:Hydroxides; D010710:Phosphates; D014874:Water Pollutants, Chemical; C540010:biochar; D002606:Charcoal; D000535:Aluminum; D008274:Magnesium
keywords: Adsorption; Biochar; Layered double hydroxide; Liquid-phase deposition; Phosphate; Ultra-fine composites