Removal of arsenic, methylene blue, and phosphate by biochar/AlOOH nanocomposite

•Biochar/AlOOH nanocomposite was produced from biomass through pyrolysis.•AlOOH particles on biochar surfaces are nanosized.•Biochar matrix is mesoporous with average pore size of 50nm.•Biochar/AlOOH nanocomposite effectively removed tested contaminants. In this work, a biochar based composite mater...

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Vydáno v:Chemical engineering journal (Lausanne, Switzerland : 1996) Ročník 226; s. 286 - 292
Hlavní autoři: Zhang, Ming, Gao, Bin
Médium: Journal Article
Jazyk:angličtina
Vydáno: Elsevier B.V 15.06.2013
Témata:
Adsorbent
adsorbents
adsorption
AlOOH
aqueous solutions
Arsenic
Biochar
biomass
carbon
chemical engineering
Contaminants
electron microscopes
methylene blue
Nanocomposite
Nanocomposites
Nanomaterials
Nanostructure
Phosphates
pyrolysis
Sorption
sorption isotherms
Surface chemistry
X-radiation
Nanocomposite
AlOOH
Biochar
Adsorbent
Contaminants
ISSN:1385-8947, 1873-3212
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Shrnutí:•Biochar/AlOOH nanocomposite was produced from biomass through pyrolysis.•AlOOH particles on biochar surfaces are nanosized.•Biochar matrix is mesoporous with average pore size of 50nm.•Biochar/AlOOH nanocomposite effectively removed tested contaminants. In this work, a biochar based composite material with AlOOH nano-flakes was fabricated from AlCl3 pretreated biomass through slow pyrolysis in a N2 environment at 600°C. Physicochemical properties of the biochar/AlOOH nanocomposite were studied systematically with several commonly used material characterization instruments, including electron microscopes and X-ray techniques. Structure and morphology analysis of the sample showed that the AlOOH particles/flakes are nanosized and uniformly grow on the carbon surface within the pores of the biochar. Laboratory batch sorption experiments were conducted to evaluate the sorption ability of the biochar/AlOOH nanocomposite to three representative aqueous contaminants: arsenic, methylene blue, and phosphate. The adsorption isotherm and adsorption kinetics data suggested that the biochar/AlOOH nanocomposite is an excellent multifunctional adsorbent that can effectively remove all these contaminants from aqueous solutions.
Bibliografie:http://dx.doi.org/10.1016/j.cej.2013.04.077
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ISSN:1385-8947
1873-3212
DOI:10.1016/j.cej.2013.04.077