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Adsorption of Cadmium on Degraded Soils Amended with Maize-Stalk-Derived Biochar

Author

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  • Caixia Wu

    (Department of Environmental Engineering, School of Environment and Resource, Southwest University of Science and Technology, Mianyang 621010, China
    Low-cost Wastewater Treatment Technology International Sci-Tech Cooperation Base of Sichuan Province, Mianyang 621010, China)

  • Yungui Li

    (Department of Environmental Engineering, School of Environment and Resource, Southwest University of Science and Technology, Mianyang 621010, China
    Low-cost Wastewater Treatment Technology International Sci-Tech Cooperation Base of Sichuan Province, Mianyang 621010, China)

  • Mengjun Chen

    (Department of Environmental Engineering, School of Environment and Resource, Southwest University of Science and Technology, Mianyang 621010, China
    Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, Southwest University of Science and Technology, Mianyang 621010, China)

  • Xiang Luo

    (Department of Environmental Engineering, School of Environment and Resource, Southwest University of Science and Technology, Mianyang 621010, China
    Low-cost Wastewater Treatment Technology International Sci-Tech Cooperation Base of Sichuan Province, Mianyang 621010, China)

  • Yuwei Chen

    (Department of Environmental Engineering, School of Environment and Resource, Southwest University of Science and Technology, Mianyang 621010, China
    Department of Chemistry and Biochemistry, Laurentian University, Sudbury, ON P3E 2C6, Canada)

  • Nelson Belzile

    (Department of Environmental Engineering, School of Environment and Resource, Southwest University of Science and Technology, Mianyang 621010, China
    Department of Chemistry and Biochemistry, Laurentian University, Sudbury, ON P3E 2C6, Canada)

  • Sheng Huang

    (Department of Environmental Engineering, School of Environment and Resource, Southwest University of Science and Technology, Mianyang 621010, China
    Low-cost Wastewater Treatment Technology International Sci-Tech Cooperation Base of Sichuan Province, Mianyang 621010, China)

Abstract

Biochar has been extensively proven to distinctively enhance the sorption capacity of both heavy metal and organic pollutants and reduce the related environmental risks. Soil pollution and degradation widely coexist, and the effect of biochar addition on adsorption behavior by degraded soils is not well understood. Four degraded soils with different degrees of degradation were amended with maize-stalk-derived biochar to investigate the adsorption of cadmium using batch methods. The maximum adsorption capacity ( Q m ) of degraded soil remarkably decreased in comparison with undegraded soil (5361 mg·kg −1 →170 mg·kg −1 ), and the Q m of biochar increased with increasing pyrolysis temperature (22987 mg·kg −1 →49016 mg·kg −1 ) which was much higher than that of soil. The addition of biochar can effectively improve the cadmium adsorption capacity of degraded soil (36–328%). The improving effect is stronger when increasing either the degradation level or the amount of added biochar, or the pyrolysis temperature of biochar. Contrary to the general soil–biochar system, adsorption of Cd was not enhanced but slightly suppressed (7.1–36.6%) when biochar was incorporated with degraded soils, and the adsorptivity attenuation degree was found to be negatively linear with SOM content in the degraded soil–biochar system. The results of the present study suggest that more attention on the adsorption inhibition and acceleration effect difference between the soil–biochar system and the degraded soil–biochar system is needed.

Suggested Citation

  • Caixia Wu & Yungui Li & Mengjun Chen & Xiang Luo & Yuwei Chen & Nelson Belzile & Sheng Huang, 2018. "Adsorption of Cadmium on Degraded Soils Amended with Maize-Stalk-Derived Biochar," IJERPH, MDPI, vol. 15(11), pages 1-17, October.
    • Handle: RePEc:gam:jijerp:v:15:y:2018:i:11:p:2331-:d:177564
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    References listed on IDEAS

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    1. Dan Zhou & Dan Liu & Fengxiang Gao & Mengke Li & Xianping Luo, 2017. "Effects of Biochar-Derived Sewage Sludge on Heavy Metal Adsorption and Immobilization in Soils," IJERPH, MDPI, vol. 14(7), pages 1-15, June.
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    Cited by:

    1. Zuwen Liu & Shi Yang & Linan Zhang & Jinfeng Zeng & Shuai Tian & Yuan Lin, 2022. "The Removal of Pb 2+ from Aqueous Solution by Using Navel Orange Peel Biochar Supported Graphene Oxide: Characteristics, Response Surface Methodology, and Mechanism," IJERPH, MDPI, vol. 19(8), pages 1-18, April.
    2. Haixia Wang & Mingliang Zhang & Qi Lv, 2019. "Influence of Pyrolysis Temperature on Cadmium Removal Capacity and Mechanism by Maize Straw and Platanus Leaves Biochars," IJERPH, MDPI, vol. 16(5), pages 1-16, March.
    3. Catalin Aurelian Rosculete & Elena Bonciu & Elena Rosculete & Liviu Aurel Olaru, 2018. "Determination of the Environmental Pollution Potential of Some Herbicides by the Assessment of Cytotoxic and Genotoxic Effects on Allium cepa," IJERPH, MDPI, vol. 16(1), pages 1-10, December.

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