Chemical Research in Chinese Universities

, Volume 34, Issue 6, pp 1014–1019 | Cite as

Preparation of Corn Stalk-walnut Shell Mix-based Activated Carbon and Its Adsorption of Malachite Green

  • Chunli Kang
  • Dan Shang
  • Ting Yang
  • Ling Zhu
  • Fang Liu
  • Nan Wang
  • Tao TianEmail author


The mix-based activated carbon derived from corn stalk and walnut shell was prepared by chemical activation method using phosphoric acid as the activator. The optimized conditions for preparation were obtained by the orthogonal experiment, the characterizations of the activated carbon were performed by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy(FTIR), Boehm’s titration method and nitrogen adsorption. For the prepared mix-based activated carbon, the highest iodine number, methylene blue number and BET surface area are 720.5 mg/g, 195.0 mg/g and 1187 m2/g, respectively, and the pores are mainly mesopores. The mix-based activated carbon shows the higher adsorption capacity for malachite green than the raw materials, the activated carbons prepared only from corn stalk or walnut shell and the commercial activated carbon. The kinetics and thermodynamics of the adsorption can be satisfactorily described by the Pseudo-second-order kinetic model and the Langmuir isotherm model, separately.


Mix-based activated carbon Phosphoric acid activation Adsorption Malachite green 


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Copyright information

© Jilin University, The Editorial Department of Chemical Research in Chinese Universities and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Chunli Kang
    • 1
  • Dan Shang
    • 1
  • Ting Yang
    • 1
  • Ling Zhu
    • 1
  • Fang Liu
    • 1
  • Nan Wang
    • 1
  • Tao Tian
    • 1
    Email author
  1. 1.Key Laboratory of Groundwater Resources and Environment, Ministry of EducationJilin UniversityChangchunP. R. China

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