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Adsorption of Lead (II) from Aqueous Solution with High Efficiency by Hydrothermal Biochar Derived from Honey

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  • Bo Wang

    (State Key Laboratory of Environment-Friendly Energy Materials, School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China)

  • Jie Yu

    (State Key Laboratory of Environment-Friendly Energy Materials, School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China)

  • Hui Liao

    (State Key Laboratory of Environment-Friendly Energy Materials, School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China)

  • Wenkun Zhu

    (State Key Laboratory of Environment-Friendly Energy Materials, School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China)

  • Pingping Ding

    (College of Nuclear Technology and Automation Engineering, Chengdu University of Technology, Chengdu 610059, China)

  • Jian Zhou

    (State Key Laboratory of Environment-Friendly Energy Materials, School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China)

Abstract

A novel natural honey hydrothermal biochar (HHTB) was prepared using natural honey as raw material. The as-prepared adsorbent was applied to adsorb Pb 2+ from aqueous solution and characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy to investigate the structure and morphology change of the adsorbent before and after Pb 2+ adsorption. The influence of the pH, initial Pb 2+ concentration, temperature, and contact time on the adsorption of Pb 2+ was systematically investigated. The results revealed that the adsorption capacity for Pb 2+ is up to 133.2 mg·g −1 at initial pH of 5.0 and adsorption temperature of 298 K. Meanwhile, the adsorption of Pb 2+ on HHTB can be well fitted by the pseudo-second-order model and Langmuir isotherm model. The adsorbent had great selectivity for Pb 2+ from the aqueous solution containing coexisting ions including Cd 2+ , Co 2+ , Cr 3+ , Cu 2+ , Ni 2+ and Zn 2+ . Furthermore, the adsorption of Pb 2+ on HHTB was attributed to complexation coordination, where it involved hydroxyl and carboxylic groups on HHTB in the process of adsorption of Pb 2+ .

Suggested Citation

  • Bo Wang & Jie Yu & Hui Liao & Wenkun Zhu & Pingping Ding & Jian Zhou, 2020. "Adsorption of Lead (II) from Aqueous Solution with High Efficiency by Hydrothermal Biochar Derived from Honey," IJERPH, MDPI, vol. 17(10), pages 1-13, May.
    • Handle: RePEc:gam:jijerp:v:17:y:2020:i:10:p:3441-:d:358374
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    References listed on IDEAS

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    1. Zhang, Zhikun & Zhu, Zongyuan & Shen, Boxiong & Liu, Lina, 2019. "Insights into biochar and hydrochar production and applications: A review," Energy, Elsevier, vol. 171(C), pages 581-598.
    2. Zhong, Chongli & Wei, Xiaomin, 2004. "A comparative experimental study on the liquefaction of wood," Energy, Elsevier, vol. 29(11), pages 1731-1741.
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