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Adsorption Performance of Two Kinds of Biochar for Cd2+ in Water

Received: 31 May 2022     Published: 1 June 2022
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Abstract

Cadmium is one of the most widely distributed and toxic pollutants in nature, and the remediation of Cd pollution is still a difficult and serious task. In this paper, the biochar derived from walnut shells and sunflower seed shells were prepared at 700°C. The two kinds of biochar were characterized by SEM and FTIR, and the effects of pH, adsorption time, initial concentration on the adsorption of Cd2+ in aqueous solution were investigated. The adsorption kinetics were studied and the experimental data was also fitted with the isotherm equilibrium models. The results showed that the adsorption amount of Cd2+ increased with the pH when the solution pH was between 2 and 7. The maximum adsorption amount of Cd in water was up to 12.94 mg•g-1 and 21.11 mg•g-1 for BWS and BSS. The adsorption kinetics of Cd2+ on the BWS and BSS followed pseudo-second-order kinetics. The Langmuir adsorption isotherm was used to describe the adsorption equilibrium process isotherms. Thermodynamic studies showed that the adsorption reaction was spontaneous, endothermic and entropy increasing. The analysis of microstructural characteristics indicated that complexation and ion exchange are the main mechanisms of cadmium adsorption on the two kinds of biochar. And the surface of the BSS contained a large number of functional groups. Compared with the BSS exhibited better Cd2+ adsorption capacity. The results of this research are important for the resourceful use of waste and the purification of heavy metals in water.

Published in International Journal of Environmental Protection and Policy (Volume 10, Issue 3)
DOI 10.11648/j.ijepp.20221003.14
Page(s) 67-72
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2022. Published by Science Publishing Group

Keywords

Biochar, Walnut Shell, Sunflower Seed Shell, Cd2+, Adsorption

References
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[2] Cai R Z, Tan C Y, Cao X Y, et al. Physicochemical properties and adsorption effect of cadmium on biochar from teak peel [J]. Journal of Natural Sciences, Hunan Normal University, 2022, 45 (01): 57-66.
[3] Liu S J, Liu Y G, Tan X F, et al. The effect of several activated biochar on Cd immobilization and microbial community composition during in-situ remediation of heavy metal contaminated sediment [J]. Chemosphere, 2018, 208: 655-664.
[4] Zhou J H, Song Q Y, Luo W, et al. Removal of Hg (II) and Cd (II) from wastewater by biochar/fly ash [J]. Environmental Science and Technology, 2021, 44 (S2): 245-252.
[5] Li B, Yang L, Wang C Q, et al. Adsorption of Cd (II) from aqueous solutions by rape straw biochar derived from different modification processes [J]. Chemosphere, 2017, 175: 332-340.
[6] Hu X Y, Chen Y J, Zhang S S, et al. Removal of Cd from water bodies by magnetic corn stover biochar and recycling [J]. Journal of Agricultural Engineering, 2018, 34 (19): 208-218.
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[8] Sheng X C, Sima X F, Meng Y, et al. Characterization of Cd adsorption by two types of straw biochar [J]. Journal of Anhui Agricultural University, 2021, 48 (05): 829-833.
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[11] Guo H Y, HeC X. Physicochemical properties of four biochar and their adsorption performance on methylene blue [J]. Materials Development and Applications, 2019, 34 (2): 113-119.
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[13] Martinez M L, Torres M M, Guzman C A, et al. Preparation and characteristics of activated carbon from olive stones and walnut shells [J]. Industrial Crops and Products, 2006, 23: 23-28.
[14] Bandara T, Xu J M, Potter L D, et al. Mechanisms for the removal of Cd (II) and Cu (II) from aqueous solution and mine water by biochars derived from agricultural wastes [J]. Chemosphere, 2020, 254: 1-10.
[15] Chen Q, Zheng J W, Zheng L C, et al. Classical theory and electron-scale view of exceptional Cd (II) adsorption onto mesoporous cellulose biochar via experimental analysis coupled with DFT calculations [J]. Chemical Engineering Journal, 2018, 350: 1000-1009.
[16] Zhao Y F, Zhang B, Zhang X, et al. Preparation of highly ordered cubic naa zeolite from halloysite mineral for adsorption of ammonium ions [J]. Journal of Hazardous Materials, 2010, 178 (1-3): 658-664.
[17] Niu Y Z, Qu R J, Sun C M, et al. Adsorption of Pb (II) from aqueous solution by silicagel supported hyperbranched polyamidoamine dendrimers [J]. Journal of Hazardous Materials, 2013, 244-245: 276-286.
[18] Fan S S, Li X, Hu K, et al. Kinetics and thermodynamics of heavy metal Cd adsorption by sludge-based biochar [J]. Journal of Environmental Engineering, 2016, 10 (10): 5971-5977.
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    Ye Jinsha, Luo Xin, Liu Ruisen. (2022). Adsorption Performance of Two Kinds of Biochar for Cd2+ in Water. International Journal of Environmental Protection and Policy, 10(3), 67-72. https://doi.org/10.11648/j.ijepp.20221003.14

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    ACS Style

    Ye Jinsha; Luo Xin; Liu Ruisen. Adsorption Performance of Two Kinds of Biochar for Cd2+ in Water. Int. J. Environ. Prot. Policy 2022, 10(3), 67-72. doi: 10.11648/j.ijepp.20221003.14

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    AMA Style

    Ye Jinsha, Luo Xin, Liu Ruisen. Adsorption Performance of Two Kinds of Biochar for Cd2+ in Water. Int J Environ Prot Policy. 2022;10(3):67-72. doi: 10.11648/j.ijepp.20221003.14

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  • @article{10.11648/j.ijepp.20221003.14,
      author = {Ye Jinsha and Luo Xin and Liu Ruisen},
      title = {Adsorption Performance of Two Kinds of Biochar for Cd2+ in Water},
      journal = {International Journal of Environmental Protection and Policy},
      volume = {10},
      number = {3},
      pages = {67-72},
      doi = {10.11648/j.ijepp.20221003.14},
      url = {https://doi.org/10.11648/j.ijepp.20221003.14},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijepp.20221003.14},
      abstract = {Cadmium is one of the most widely distributed and toxic pollutants in nature, and the remediation of Cd pollution is still a difficult and serious task. In this paper, the biochar derived from walnut shells and sunflower seed shells were prepared at 700°C. The two kinds of biochar were characterized by SEM and FTIR, and the effects of pH, adsorption time, initial concentration on the adsorption of Cd2+ in aqueous solution were investigated. The adsorption kinetics were studied and the experimental data was also fitted with the isotherm equilibrium models. The results showed that the adsorption amount of Cd2+ increased with the pH when the solution pH was between 2 and 7. The maximum adsorption amount of Cd in water was up to 12.94 mg•g-1 and 21.11 mg•g-1 for BWS and BSS. The adsorption kinetics of Cd2+ on the BWS and BSS followed pseudo-second-order kinetics. The Langmuir adsorption isotherm was used to describe the adsorption equilibrium process isotherms. Thermodynamic studies showed that the adsorption reaction was spontaneous, endothermic and entropy increasing. The analysis of microstructural characteristics indicated that complexation and ion exchange are the main mechanisms of cadmium adsorption on the two kinds of biochar. And the surface of the BSS contained a large number of functional groups. Compared with the BSS exhibited better Cd2+ adsorption capacity. The results of this research are important for the resourceful use of waste and the purification of heavy metals in water.},
     year = {2022}
    }
    

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  • TY  - JOUR
    T1  - Adsorption Performance of Two Kinds of Biochar for Cd2+ in Water
    AU  - Ye Jinsha
    AU  - Luo Xin
    AU  - Liu Ruisen
    Y1  - 2022/06/01
    PY  - 2022
    N1  - https://doi.org/10.11648/j.ijepp.20221003.14
    DO  - 10.11648/j.ijepp.20221003.14
    T2  - International Journal of Environmental Protection and Policy
    JF  - International Journal of Environmental Protection and Policy
    JO  - International Journal of Environmental Protection and Policy
    SP  - 67
    EP  - 72
    PB  - Science Publishing Group
    SN  - 2330-7536
    UR  - https://doi.org/10.11648/j.ijepp.20221003.14
    AB  - Cadmium is one of the most widely distributed and toxic pollutants in nature, and the remediation of Cd pollution is still a difficult and serious task. In this paper, the biochar derived from walnut shells and sunflower seed shells were prepared at 700°C. The two kinds of biochar were characterized by SEM and FTIR, and the effects of pH, adsorption time, initial concentration on the adsorption of Cd2+ in aqueous solution were investigated. The adsorption kinetics were studied and the experimental data was also fitted with the isotherm equilibrium models. The results showed that the adsorption amount of Cd2+ increased with the pH when the solution pH was between 2 and 7. The maximum adsorption amount of Cd in water was up to 12.94 mg•g-1 and 21.11 mg•g-1 for BWS and BSS. The adsorption kinetics of Cd2+ on the BWS and BSS followed pseudo-second-order kinetics. The Langmuir adsorption isotherm was used to describe the adsorption equilibrium process isotherms. Thermodynamic studies showed that the adsorption reaction was spontaneous, endothermic and entropy increasing. The analysis of microstructural characteristics indicated that complexation and ion exchange are the main mechanisms of cadmium adsorption on the two kinds of biochar. And the surface of the BSS contained a large number of functional groups. Compared with the BSS exhibited better Cd2+ adsorption capacity. The results of this research are important for the resourceful use of waste and the purification of heavy metals in water.
    VL  - 10
    IS  - 3
    ER  - 

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Author Information
  • College of Safety Engineering, North China University of Science and Technology, Beijing, China

  • College of Chemical and Environmental Engineering, North China Institute of Science and Technology, Beijing, China

  • College of Safety Engineering, North China University of Science and Technology, Beijing, China

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