Advanced search
2 files | 1.98 MB Add to list

Chemical stabilization of Cd-contaminated soil using fresh and aged wheat straw biochar

Author
Organization
Project
  • GreenCarbon (Advanced Carbon Materials from Biowaste: Sustainable Pathways to Drive Innovative Green Technologies)
Abstract
Metal mining and smelting activities can introduce a substantial amount of potentially toxic elements (PTE) into the environment that can persist for an extended period. That can limit the productivity of the land and creates dangerous effects on ecosystem services. The effectiveness of wheat straw biochar to immobilize Cd in contaminated soil due to metal smelting activities was investigated in this study. The biochar carbon stability and long-term provisioning of services depend on the biochar production conditions, nature of the feedstock, and the biotic and abiotic environmental conditions in which the biochar is being used. Within this context, three types of wheat straw biochar were produced using a screw reactor at 400 °C, 500 °C, and 600 °C and tested in a laboratory incubation study. Soil was amended with 2 wt% of biochar. Both fresh and aged forms of biochar were used. Biochars produced at lower temperatures were characterized by lower pH, a lower amount of stable C, and higher amounts of acidic surface functional groups than the freshly produced biochars at higher production temperatures. At the end of the 6 months of incubation time, compared to the soil only treatment, fresh and aged forms of wheat straw biochar produced at 600 °C reduced the Cd concentration in soil pore water by 22% and 15%, respectively. Our results showed that the aged forms of biochar produced at higher production temperatures (500 °C and 600 °C) immobilized Cd more efficiently than the aged forms of lower temperature biochar (400 °C). The findings of this study provide insights to choose the production parameters in wheat straw biochar production while considering their aging effect to achieve successful stabilization of Cd in contaminated soils.
Keywords
Wheat straw biochar, Accelerated aging, Soil remediation, Biochar stability, Cd contaminated soil, PYROGENIC ORGANIC-MATTER, PYROLYSIS TEMPERATURE, SLOW PYROLYSIS, IMMOBILIZATION, STABILITY, FEEDSTOCK, CADMIUM, WATER, ZN, REMEDIATION

Downloads

  • accepted version.pdf
    • full text (Accepted manuscript)
    • |
    • open access
    • |
    • PDF
    • |
    • 1.14 MB
  • (...).pdf
    • full text (Published version)
    • |
    • UGent only
    • |
    • PDF
    • |
    • 847.71 KB

Citation

Please use this url to cite or link to this publication:

MLA
Rathnayake, Dilani, et al. “Chemical Stabilization of Cd-Contaminated Soil Using Fresh and Aged Wheat Straw Biochar.” ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, vol. 28, no. 8, 2021, pp. 10155–66, doi:10.1007/s11356-020-11574-6.
APA
Rathnayake, D., Rego, F., Van Poucke, R., Bridgwater, A. V., Mašek, O., Meers, E., … Ronsse, F. (2021). Chemical stabilization of Cd-contaminated soil using fresh and aged wheat straw biochar. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, 28(8), 10155–10166. https://doi.org/10.1007/s11356-020-11574-6
Chicago author-date
Rathnayake, Dilani, Filipe Rego, Reinhart Van Poucke, Anthony V. Bridgwater, Ondřej Mašek, Erik Meers, Jiawei Wang, Yang Yang, and Frederik Ronsse. 2021. “Chemical Stabilization of Cd-Contaminated Soil Using Fresh and Aged Wheat Straw Biochar.” ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 28 (8): 10155–66. https://doi.org/10.1007/s11356-020-11574-6.
Chicago author-date (all authors)
Rathnayake, Dilani, Filipe Rego, Reinhart Van Poucke, Anthony V. Bridgwater, Ondřej Mašek, Erik Meers, Jiawei Wang, Yang Yang, and Frederik Ronsse. 2021. “Chemical Stabilization of Cd-Contaminated Soil Using Fresh and Aged Wheat Straw Biochar.” ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 28 (8): 10155–10166. doi:10.1007/s11356-020-11574-6.
Vancouver
1.
Rathnayake D, Rego F, Van Poucke R, Bridgwater AV, Mašek O, Meers E, et al. Chemical stabilization of Cd-contaminated soil using fresh and aged wheat straw biochar. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH. 2021;28(8):10155–66.
IEEE
[1]
D. Rathnayake et al., “Chemical stabilization of Cd-contaminated soil using fresh and aged wheat straw biochar,” ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, vol. 28, no. 8, pp. 10155–10166, 2021.
@article{8679895,
  abstract     = {{Metal mining and smelting activities can introduce a substantial amount of potentially toxic elements (PTE) into the environment that can persist for an extended period. That can limit the productivity of the land and creates dangerous effects on ecosystem services. The effectiveness of wheat straw biochar to immobilize Cd in contaminated soil due to metal smelting activities was investigated in this study. The biochar carbon stability and long-term provisioning of services depend on the biochar production conditions, nature of the feedstock, and the biotic and abiotic environmental conditions in which the biochar is being used. Within this context, three types of wheat straw biochar were produced using a screw reactor at 400 °C, 500 °C, and 600 °C and tested in a laboratory incubation study. Soil was amended with 2 wt% of biochar. Both fresh and aged forms of biochar were used. Biochars produced at lower temperatures were characterized by lower pH, a lower amount of stable C, and higher amounts of acidic surface functional groups than the freshly produced biochars at higher production temperatures. At the end of the 6 months of incubation time, compared to the soil only treatment, fresh and aged forms of wheat straw biochar produced at 600 °C reduced the Cd concentration in soil pore water by 22% and 15%, respectively. Our results showed that the aged forms of biochar produced at higher production temperatures (500 °C and 600 °C) immobilized Cd more efficiently than the aged forms of lower temperature biochar (400 °C). The findings of this study provide insights to choose the production parameters in wheat straw biochar production while considering their aging effect to achieve successful stabilization of Cd in contaminated soils.}},
  author       = {{Rathnayake, Dilani and Rego, Filipe and Van Poucke, Reinhart and Bridgwater, Anthony V. and Mašek, Ondřej and Meers, Erik and Wang, Jiawei and Yang, Yang and Ronsse, Frederik}},
  issn         = {{0944-1344}},
  journal      = {{ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH}},
  keywords     = {{Wheat straw biochar,Accelerated aging,Soil remediation,Biochar stability,Cd contaminated soil,PYROGENIC ORGANIC-MATTER,PYROLYSIS TEMPERATURE,SLOW PYROLYSIS,IMMOBILIZATION,STABILITY,FEEDSTOCK,CADMIUM,WATER,ZN,REMEDIATION}},
  language     = {{eng}},
  number       = {{8}},
  pages        = {{10155--10166}},
  title        = {{Chemical stabilization of Cd-contaminated soil using fresh and aged wheat straw biochar}},
  url          = {{http://dx.doi.org/10.1007/s11356-020-11574-6}},
  volume       = {{28}},
  year         = {{2021}},
}

Altmetric
View in Altmetric
Web of Science
Times cited: