SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2018, Vol. 26 ›› Issue (3): 657-666.DOI: 10.1016/j.cjche.2017.08.015

• Materials and Product Engineering • 上一篇    下一篇

Fabrication of chitosan microspheres for efficient adsorption of methyl orange

Linlin Zhai, Zhishan Bai, Yong Zhu, Bingjie Wang, Wenqiang Luo   

  1. State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Mechanical and Engineering, East China University of Science and Technology, Shanghai 200237, China
  • 收稿日期:2017-02-16 修回日期:2017-08-29 出版日期:2018-03-28 发布日期:2018-04-18
  • 通讯作者: Zhishan Bai
  • 基金资助:

    Supported by the National Basic Research Program of China (2014CB748500) and the National Natural Science Foundation of China (51578239, 51322805).

Fabrication of chitosan microspheres for efficient adsorption of methyl orange

Linlin Zhai, Zhishan Bai, Yong Zhu, Bingjie Wang, Wenqiang Luo   

  1. State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Mechanical and Engineering, East China University of Science and Technology, Shanghai 200237, China
  • Received:2017-02-16 Revised:2017-08-29 Online:2018-03-28 Published:2018-04-18
  • Contact: Zhishan Bai
  • Supported by:

    Supported by the National Basic Research Program of China (2014CB748500) and the National Natural Science Foundation of China (51578239, 51322805).

摘要: In this article, morphology, structure and size controllable chitosan microspheres with high mechanical strength were synthesized by microfluidic technology combining chemical crosslinking and used as an adsorbent for methyl orange. The synthesized adsorbents were characterized using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and an Energy Dispersive Spectrometer (EDS). The effect of pH revealed that the adsorption process depended on pH and the pH variation of methyl orange solution after adsorption indicated that adsorption capacity was affected through the associated role of chitosan nature and pH variation. Experimental results suggested that the as-prepared chitosan microspheres were controlled within a narrow size distribution (coefficients of variation is 1.81%), whose adsorption capacity reached to 207 mg·g-1 and mechanical strength was suitable to resist forces. In addition, the adsorption isotherm was well fitted with the Langmuir model, and the adsorption kinetic was best described by the pseudo-second-order kinetic model. The high performance microfluidic-synthesized chitosan microspheres have promising potentials in the applications of removing dyes from wastewater.

关键词: Microfluidic technology, Chitosan microspheres, Adsorption, Methyl orange

Abstract: In this article, morphology, structure and size controllable chitosan microspheres with high mechanical strength were synthesized by microfluidic technology combining chemical crosslinking and used as an adsorbent for methyl orange. The synthesized adsorbents were characterized using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and an Energy Dispersive Spectrometer (EDS). The effect of pH revealed that the adsorption process depended on pH and the pH variation of methyl orange solution after adsorption indicated that adsorption capacity was affected through the associated role of chitosan nature and pH variation. Experimental results suggested that the as-prepared chitosan microspheres were controlled within a narrow size distribution (coefficients of variation is 1.81%), whose adsorption capacity reached to 207 mg·g-1 and mechanical strength was suitable to resist forces. In addition, the adsorption isotherm was well fitted with the Langmuir model, and the adsorption kinetic was best described by the pseudo-second-order kinetic model. The high performance microfluidic-synthesized chitosan microspheres have promising potentials in the applications of removing dyes from wastewater.

Key words: Microfluidic technology, Chitosan microspheres, Adsorption, Methyl orange