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Impact of Biochar on Organic Contaminants in Soil: A Tool for Mitigating Risk?

期刊

AGRONOMY-BASEL
卷 3, 期 2, 页码 349-375

出版社

MDPI
DOI: 10.3390/agronomy3020349

关键词

biochar; bioaccessibility; bioavailability; sorption; desorption

资金

  1. Petroleum Development and Technology Fund, Nigeria

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The presence of biochar in soils through natural processes (forest fires, bush burning) or through application to soil (agriculture, carbon storage, remediation, waste management) has received a significant amount of scientific and regulatory attention. Biochar alters soil properties, encourages microbial activity and enhances sorption of inorganic and organic compounds, but this strongly depends on the feedstock and production process of biochar. This review considers biochar sources, the production process and result of pyrolysis, interactions of biochar with soil, and associated biota. Furthermore, the paper focuses on the interactions between biochar and common anthropogenic organic contaminants, such as polycyclic aromatic hydrocarbons (PAHs), pesticides, and dioxins, which are often deposited in the soil environment. It then considers the feasibility of applying biochar in remediation technologies in addition to other perspective areas yet to be explored.

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