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Application Method and Biochar Type Affect Petroleum Hydrocarbon Degradation in Northern Landfarms by Erin M. Karppinen; Steven D. Siciliano; Katherine J. Stewart is a Environmental Science article available to read on EtoBox.

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To integrate biochar as a practical and successful remedial amendment at northern landfarms, components of its formulation and application must be optimized for site‐specific environmental conditions. Different biochar amendments were applied to petroleum hydrocarbon (PHC)‐contaminated soil at two northern field sites (Iqaluit and Whitehorse) and in a laboratory study at −5°C to determine the effects of application method (injection or incorporation) and biochar type (wood, fishmeal, bonemeal, and/or compost) on PHC degradation and associated soil properties. Incorporation decreased F2 (equivalent __n__C~10~–C~16~) and F3 (equivalent __n__C~16~–C~34~) PHC concentrations in soil after 31 d, whereas injection did not decrease PHC concentrations until Day 334. Bonemeal‐derived biochar selectively stimulated F3‐PHC degradation in frozen soil over 90 d under controlled laboratory conditions. In the field, there was little difference in PHC degradation between biochar types and the fertilizer control. Incorporation also increased NO~3~^−^ availability, and in field trials, all biochars increased NO~3~^−^ availability relative to the fertilizer control, whereas the effects of biochars on

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Author

Erin M. Karppinen; Steven D. Siciliano; Katherine J. Stewart

Publisher

Wiley

Published

2017

Language

EN

Field

Environmental Science (Physical Sciences)