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Impact of Biochar on Organic Contaminants in Soil: A Tool for Mitigating Risk?
Lancaster Environment Centre, Lancaster University, Lancaster, LA1 4YQ, UK
* Author to whom correspondence should be addressed.
Received: 30 November 2012; in revised form: 20 January 2013 / Accepted: 7 April 2013 / Published: 23 April 2013
Abstract: 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.
Keywords: biochar; bioaccessibility; bioavailability; sorption; desorption
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Cite This Article
MDPI and ACS Style
Ogbonnaya, U.; Semple, K.T. Impact of Biochar on Organic Contaminants in Soil: A Tool for Mitigating Risk? Agronomy 2013, 3, 349-375.
Ogbonnaya U, Semple KT. Impact of Biochar on Organic Contaminants in Soil: A Tool for Mitigating Risk? Agronomy. 2013; 3(2):349-375.
Ogbonnaya, Uchenna; Semple, Kirk T. 2013. "Impact of Biochar on Organic Contaminants in Soil: A Tool for Mitigating Risk?" Agronomy 3, no. 2: 349-375.