Environmental contextualisation of potential toxic elements and polycyclic aromatic hydrocarbons in biochar

Freddo, Alessia, Cai, Chao and Reid, Brain J. ORCID: https://orcid.org/0000-0002-9613-979X (2012) Environmental contextualisation of potential toxic elements and polycyclic aromatic hydrocarbons in biochar. Environmental Pollution, 171. pp. 18-24. ISSN 1873-6424

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Abstract

Nine dissimilar biochars, produced from varying feedstock at different pyrolysis temperatures, are appraised with respect to concentrations of potentially toxic elements, specifically, metals, metalloids and polycyclic aromatic hydrocarbons (PAHs). Concentrations of the metals and metalloids varied with the following ranges (mg kg−1): 0.02–0.94, Cd; 0.12–6.48, Cr; 0.04–13.2, Cu; 0.1–1.37, Ni; 0.06–3.87, Pb; 0.94–207, Zn and 0.03–0.27, As. Σ16PAH concentrations (16 Environmental Protection Agency (EPA) PAHs) range between 0.08 mg kg−1 to 8.7 mg kg−1. Subsequent comparison with background soil concentrations, concentration applied to the regulation of composted materials (Publicly Available Specification (PAS 100)) and European Union (EU) regulations relating to the application of sewage sludge to agricultural land suggest low risk associated with the concentrations of PTEs observed in biochar. Collectively, results suggest that environmental impacts attributable to metals, metalloids and PAHs associated with biochar following its application to soil are likely to be minimal.

Item Type:	Article
Faculty \ School:	Faculty of Science > School of Environmental Sciences
UEA Research Groups:	Faculty of Science > Research Centres > Centre for Ecology, Evolution and Conservation Faculty of Science > Research Groups > Geosciences Faculty of Science > Research Groups > Environmental Biology Faculty of Science > Research Groups > Resources, Sustainability and Governance (former - to 2018) Faculty of Science > Research Groups > Geosciences and Natural Hazards (former - to 2017)
Depositing User:	Brian Reid
Date Deposited:	03 May 2013 12:02
Last Modified:	08 Nov 2022 17:30
URI:	https://ueaeprints.uea.ac.uk/id/eprint/42247
DOI:	10.1016/j.envPol.2012.07.009

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