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Study on Adsorption Properties of Modified Corn Cob Activated Carbon for Mercury Ion

Author

Listed:
  • Yuyingnan Liu

    (College of Engineering, Northeast Agriculture University, Harbin 150030, China)

  • Xinrui Xu

    (College of Engineering, Northeast Agriculture University, Harbin 150030, China
    CAS Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Guangzhou 510640, China)

  • Bin Qu

    (College of Engineering, Northeast Agriculture University, Harbin 150030, China)

  • Xiaofeng Liu

    (Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China)

  • Weiming Yi

    (College of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China)

  • Hongqiong Zhang

    (College of Engineering, Northeast Agriculture University, Harbin 150030, China)

Abstract

In this study, corn cob was used as raw material and modified methods employing KOH and KMnO 4 were used to prepare activated carbon with high adsorption capacity for mercury ions. Experiments on the effects of different influencing factors on the adsorption of mercury ions were undertaken. The results showed that when modified with KOH, the optimal adsorption time was 120 min, the optimum pH was 4; when modified with KMnO 4 , the optimal adsorption time was 60 min, the optimal pH was 3, and the optimal amount of adsorbent and the initial concentration were both 0.40 g/L and 100 mg/L under both modified conditions. The adsorption process conforms to the pseudo-second-order kinetic model and Langmuir model. Scanning electron microscopy and energy-dispersive X-ray spectroscopy (SEM-EDS), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and Zeta potential characterization results showed that the adsorption process is mainly physical adsorption, surface complexation and ion exchange.

Suggested Citation

  • Yuyingnan Liu & Xinrui Xu & Bin Qu & Xiaofeng Liu & Weiming Yi & Hongqiong Zhang, 2021. "Study on Adsorption Properties of Modified Corn Cob Activated Carbon for Mercury Ion," Energies, MDPI, vol. 14(15), pages 1-22, July.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:15:p:4483-:d:600799
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    Citations

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    Cited by:

    1. Syafiqa Ayob & Wahid Ali Hamood Altowayti & Norzila Othman & Faisal Sheikh Khalid & Shafinaz Shahir & Husnul Azan Tajarudin & Ammar Mohammed Ali Alqadasi, 2023. "Experimental and Modeling Study on the Removal of Mn, Fe, and Zn from Fiberboard Industrial Wastewater Using Modified Activated Carbon," Sustainability, MDPI, vol. 15(8), pages 1-23, April.
    2. Muhammad Sultan & Muhammad Hamid Mahmood & Md Shamim Ahamed & Redmond R. Shamshiri & Muhammad Wakil Shahzad, 2022. "Energy Systems and Applications in Agriculture," Energies, MDPI, vol. 15(23), pages 1-3, December.

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