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Title of Journal: Korean J Chem Eng

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Abbravation: Korean Journal of Chemical Engineering

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Springer US

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DOI

10.1007/s11663-997-0063-x

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1975-7220

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Removal of CrVI from aqueous solution by rice hu

Authors: Yuan Fan Ruifeng Yang Zhimin Lei Na Liu Jialiang Lv Shangru Zhai Bin Zhai Lei Wang
Publish Date: 2015/12/18
Volume: 33, Issue: 4, Pages: 1416-1424
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Abstract

A novel magnetic porous sorbent obtained from agricultural waste rice husk was successfully synthesized through a simple carbonthermal method The sorbent was characterized by scanning electron microscopy transmission electron microscopy Xray diffraction Fourier transform infrared spectroscopy vibrating sample magnetometer N2 sorption analysis and Xray photoelectron spectroscopy The removal efficiency of the sorbent for CrVI was also investigated Chromium adsorption was fitted by the pseudosecondorder and Langmuir models The maximum chromium adsorption capacity BrunauerEmmettTeller surface area and average BarrettJoynerHalenda pore size of the magnetic sorbent were 157 7mg·g−1 134 1m2·g−1 and 4 99 nm respectively The saturated magnetization of the novel adsorbent was 77 8 emu·g−1 indicating that the material can facilitate separation and recovery from aqueous systems The removal mechanisms of CrVI were also discussed The result illustrates that rice huskderived magnetic carbonaceous materials are a potential adsorbent for CrVI pollution treatment and provide a suitable method for the effective conversion of biomass waste which may solve the problem of waste disposal and widen the applications of the materials

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