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학술기사

Aminated cassava residue-based magnetic microspheres for Pb(II) adsorption from wastewater

표제/저자사항
Aminated cassava residue-based magnetic microspheres for Pb(II) adsorption from wastewater / Xinling Xie, Jie Huang, Youquan Zhang, Zhangfa Tong, Anping Liao, Xingkui Guo, Zuzeng Qin, Zhanhu Guo
형태사항
p. 226-235 ; 29 cm
주기사항
수록자료: Korean journal of chemical engineering. Korean Institute of Chemical Engineers. Vol.36 No.2(2019 February), p. 226-235 36:2<226 ISSN 0256-1115↔
저자: Xinling Xie, School of Chemistry and Chemical Engineering, Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, Guangxi University ; Integrated Composites Laboratory (ICL), Department of Chemical and Biomolecular Engineering, University of Tennessee
저자: Jie Huang, School of Chemistry and Chemical Engineering, Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, Guangxi University,
저자: Youquan Zhang, School of Chemistry and Chemical Engineering, Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, Guangxi University,
저자: Zhangfa Tong, School of Chemistry and Chemical Engineering, Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, Guangxi University,
저자: Anping Liao, Key Laboratory of Chemical and Biological Transformation Process of Guangxi Higher Education Institutes, Guangxi University for Nationalities
저자: Xingkui Guo, Integrated Composites Laboratory (ICL), Department of Chemical and Biomolecular Engineering, University of Tennessee ; College of Chemical and Environmental Engineering, Shandong University of Science and Technology
저자: Zuzeng Qin, School of Chemistry and Chemical Engineering, Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, Guangxi University,
저자: Zhanhu Guo, Integrated Composites Laboratory (ICL), Department of Chemical and Biomolecular Engineering, University of Tennessee
수록잡지명
Korean journal of chemical engineering.
청구기호
660.2-K846-36(2)
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학술기사선택 => 바구니넣기 => 자료당일신청 후 [3층 연속간행물실(서고자료대출반납)] 에서 이용하십시오

초록내용/해제내용

인쇄

 Aminated cassava residue magnetic microspheres (ACRPM) were synthesized via an inverse emulsion method by using chemically modified cassava residue as a crude material, and acrylic acid (AA), acrylamide (AM), and methyl methacrylate (MMA) as monomers and a polyethylene glycol/methanol system (PEG/MeOH) as the porogen. Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), N₂ adsorption-desorption and vibrating sample magnetometry (VSM) were used to characterize the ACRPM. The results indicated that amino groups were grafted to the cassava residue magnetic microspheres, and the Fe₃O₄ nanoparticles were encapsulated in the microspheres. After porogen was added, the particle size of the ACRPM decreased from 16.5 μm to 150 nm with a pore volume of 0.05510 m3/g, and the specific surface area of the ACRPM increased from 3.02 to 12.34 m²/g. The ACRPM were superparamagnetic, and the saturation magnetization was 9.8 emu/g. The maximum adsorption capacity of Pb(II) on the ACRPM was 390 mg/g. The ACRPM exhibited a large specific surface area and provided many adsorption sites for metal ion adsorption, which favored a high adsorption capacity. Additionally, the Pb(II) adsorption process was fitted to pseudo-second-order kinetic and Langmuir isothermal adsorption models. This suggests that the Pb(II) adsorption process was dominated by a chemical reaction process and that chemisorption was the rate-controlling step during the Pb(II) removal process. In addition, the adsorbent exhibited good stability after six consecutive reuses.

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