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Environments 2014, 1(1), 60-74;

Influence of Wood Biochar on Phenanthrene Catabolism in Soils

EcoSystems Environmental Management Services Ltd., 8 Rasheed Alaba Williams Street, Off Admiralty Way, Lekki Peninsula, Lagos, Nigeria
Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, UK
Section for Integrative Bioenergetics Ecotoxicology and Environmental Systems, Department of Microbiology, Faculty of Life Sciences, University of Ilorin, Ilorin P.M.B. 1515, Nigeria
These authors contributed equally to this work.
Author to whom correspondence should be addressed.
Received: 30 June 2014 / Revised: 4 August 2014 / Accepted: 5 August 2014 / Published: 12 August 2014
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The impact of increasing amendments of two particle sizes of biochar (≤2 mm and 3–7 mm), applied at 0%, 0.01%, 0.1% and 1% concentrations, on the development of indigenous phenanthrene catabolism was investigated in two soils with different soil organic matter contents. Mineralisation of 14C-phenanthrene was measured after 1, 20, 60 and 100 d soil-phenanthrene-biochar aging period. The presence of biochar in the pasture soil (low OM) resulted in a decrease in the lag phase of 14C-phenanthrene mineralisation, with higher maximum rates of mineralisation following 20 d aging. Higher extents of 14C-phenanthrene mineralisation were observed in the Kettering loam soil (high OM), which was more prominent with 0.01% biochar amendments (p < 0.05) at 61.2% and 64.9% in ≤2 mm and 3–7 mm biochar amended soils, respectively. This study illustrates the potential role for biochar to enhance microbial catabolic activity to degrade common petroleum contaminants. It however depends on contaminant concentration, aging period, and soil properties. View Full-Text
Keywords: biochar; PAHs; catabolism; adaptation biochar; PAHs; catabolism; adaptation

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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Ogbonnaya, U.; Oyelami, A.; Matthews, J.; Adebisi, O.; Semple, K.T. Influence of Wood Biochar on Phenanthrene Catabolism in Soils. Environments 2014, 1, 60-74.

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