TY - JOUR
T1 - Preparation and characterization of a novel magnetic biochar for arsenic removal
AU - Zhang, Ming
AU - Gao, Bin
AU - Varnoosfaderani, Sima
AU - Hebard, Arthur
AU - Yao, Ying
AU - Inyang, Mandu
PY - 2013/2
Y1 - 2013/2
N2 - A magnetic biochar based adsorbent with colloidal or nanosized γ-Fe2O3 particles embedded in porous biochar matrix was fabricated via thermal pyrolysis of FeCl3 treated biomass. The synthesized samples were studied systematically by X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy, selected-area electron diffraction pattern, scanning electron microscopy, energy-dispersive X-ray analysis, superconducting quantum interference device, and batch sorption measurements. The characterization analyses showed that large quantity of γ-Fe2O3 particles with size between hundreds of nanometers and several micrometers tightly grow within the porous biochar matrix. Biochar/γ-Fe2O3 composite exhibited excellent ferromagnetic property with a saturation magnetization of 69.2emu/g. Batch sorption experimental results showed that the composite has strong sorption ability to aqueous arsenic. Because of its excellent ferromagnetic properties, the arsenic-laden biochar/γ-Fe2O3 composite could be easily separated from the solution by a magnet at the end of the sorption experiment.
AB - A magnetic biochar based adsorbent with colloidal or nanosized γ-Fe2O3 particles embedded in porous biochar matrix was fabricated via thermal pyrolysis of FeCl3 treated biomass. The synthesized samples were studied systematically by X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy, selected-area electron diffraction pattern, scanning electron microscopy, energy-dispersive X-ray analysis, superconducting quantum interference device, and batch sorption measurements. The characterization analyses showed that large quantity of γ-Fe2O3 particles with size between hundreds of nanometers and several micrometers tightly grow within the porous biochar matrix. Biochar/γ-Fe2O3 composite exhibited excellent ferromagnetic property with a saturation magnetization of 69.2emu/g. Batch sorption experimental results showed that the composite has strong sorption ability to aqueous arsenic. Because of its excellent ferromagnetic properties, the arsenic-laden biochar/γ-Fe2O3 composite could be easily separated from the solution by a magnet at the end of the sorption experiment.
KW - Adsorption
KW - Biochar
KW - Black carbon
KW - Nanocomposite
UR - https://www.scopus.com/pages/publications/84872246268
U2 - 10.1016/j.biortech.2012.11.132
DO - 10.1016/j.biortech.2012.11.132
M3 - Article
AN - SCOPUS:84872246268
SN - 0960-8524
VL - 130
SP - 457
EP - 462
JO - Bioresource Technology
JF - Bioresource Technology
ER -
