SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2019, Vol. 27 ›› Issue (8): 1973-1980.DOI: 10.1016/j.cjche.2018.12.014

• Materials and Product Engineering • 上一篇    下一篇

Adsorption of methyl orange from aqueous solution by composite magnetic microspheres of chitosan and quaternary ammonium chitosan derivative

Bin Zhao1,2, Xiaojing Sun2, Liang Wang1,2, Lixiang Zhao2, Zhaohui Zhang1,2, Junjing Li1,2   

  1. 1 State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin 300387, China;
    2 School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, China
  • 收稿日期:2018-07-26 修回日期:2018-11-25 出版日期:2019-08-28 发布日期:2019-11-16
  • 通讯作者: Liang Wang
  • 基金资助:
    Supported by the National Key Project for Research and Development (2016YFC0400503), the National Natural Science Foundation of China (51478314, 51678408, 51508385), and the Science and Technology Plans of Tianjin (17PTSYJC00050, 17ZYPTJC00060).

Adsorption of methyl orange from aqueous solution by composite magnetic microspheres of chitosan and quaternary ammonium chitosan derivative

Bin Zhao1,2, Xiaojing Sun2, Liang Wang1,2, Lixiang Zhao2, Zhaohui Zhang1,2, Junjing Li1,2   

  1. 1 State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin 300387, China;
    2 School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, China
  • Received:2018-07-26 Revised:2018-11-25 Online:2019-08-28 Published:2019-11-16
  • Contact: Liang Wang
  • Supported by:
    Supported by the National Key Project for Research and Development (2016YFC0400503), the National Natural Science Foundation of China (51478314, 51678408, 51508385), and the Science and Technology Plans of Tianjin (17PTSYJC00050, 17ZYPTJC00060).

摘要: Novel composite magnetic microspheres containing chitosan and quaternary ammonium chitosan derivative (CHMMs) were prepared by inverse suspension method, and used for the methyl orange (MO) removal from aqueous solutions. The CHMMs were characterized by a scanning electron microscope, a transmission electron microscope, and Fourier transform infrared spectroscopy, respectively. Compared with the chitosan beads, the incorporation of quaternary ammonium chitosan derivative significantly reduced the particle size. The MO adsorption by CHMMs was investigated by batch adsorption experiments. The adsorption kinetics was conformed to the pseudo second-order kinetics equation. The adsorption isotherm followed the Langmuir model better than the Freundlich model and the calculated maximum MO adsorption capacity was 266.6 mg·g-1 at 293 K. Thermodynamic studies indicated that the MO adsorption was endothermic in nature with the enthalpy change (ΔH°) of 99.44 kJ·mol-1. The CHMMs had a stable performance for MO adsorption in the pH range of 4-10, but high ionic strength deteriorated the MO removal due to the shielding of the ion exchange interaction. A 1 mol·L-1 NaCl solution could be used to regenerate the exhausted CHMMs. The proposed CHMMs can be used as an effective adsorbent for dye removal or recovery from the dye wastewater.

关键词: Chitosan, Quaternary ammonium chitosan derivative, Waste water, Adsorption, Ion exchange

Abstract: Novel composite magnetic microspheres containing chitosan and quaternary ammonium chitosan derivative (CHMMs) were prepared by inverse suspension method, and used for the methyl orange (MO) removal from aqueous solutions. The CHMMs were characterized by a scanning electron microscope, a transmission electron microscope, and Fourier transform infrared spectroscopy, respectively. Compared with the chitosan beads, the incorporation of quaternary ammonium chitosan derivative significantly reduced the particle size. The MO adsorption by CHMMs was investigated by batch adsorption experiments. The adsorption kinetics was conformed to the pseudo second-order kinetics equation. The adsorption isotherm followed the Langmuir model better than the Freundlich model and the calculated maximum MO adsorption capacity was 266.6 mg·g-1 at 293 K. Thermodynamic studies indicated that the MO adsorption was endothermic in nature with the enthalpy change (ΔH°) of 99.44 kJ·mol-1. The CHMMs had a stable performance for MO adsorption in the pH range of 4-10, but high ionic strength deteriorated the MO removal due to the shielding of the ion exchange interaction. A 1 mol·L-1 NaCl solution could be used to regenerate the exhausted CHMMs. The proposed CHMMs can be used as an effective adsorbent for dye removal or recovery from the dye wastewater.

Key words: Chitosan, Quaternary ammonium chitosan derivative, Waste water, Adsorption, Ion exchange