화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.33, No.4, 1416-1424, April, 2016
DOI10.1007/s11814-015-0248-y  Export Citation
Removal of Cr(VI) from aqueous solution by rice husk derived magnetic sorbents
Yuan Fan, Ruifeng Yang†, Zhimin Lei, Na Liu, Jialiang Lv, Shangru Zhai†, Bin Zhai, and Lei Wang
  • Faculty of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
E-mail:,
A novel magnetic porous sorbent obtained from agricultural waste rice husk was successfully synthesized through a simple carbon-thermal method. The sorbent was characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, vibrating sample magnetometer, N2 sorption analysis, and X-ray photoelectron spectroscopy. The removal efficiency of the sorbent for Cr(VI) was also investigated. Chromium adsorption was fitted by the pseudo-second-order and Langmuir models. The maximum chromium adsorption capacity, Brunauer-Emmett-Teller surface area, and average Barrett-Joyner-Halenda 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 Cr(VI) were also discussed. The result illustrates that rice husk-derived magnetic carbonaceous materials are a potential adsorbent for Cr(VI) 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.
Keywords:Bio-sorbent;Magnetic;Cr(VI) Removal;Adsorption;Agricultural Waste
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