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Biochar and bioenergy production for climate change mitigation

Author(s): Winsley P

Published: January, 2007

Publisher: New Zealand Science Review

Tags: Biochar

URL: http://www.biochar-international.org/images/NZSR64_1_Winsley.pdf

Abstract: The world will increasingly depend on renewable energy with low or zero net greenhouse gas (GHG) emissions. This paper explores how science and the economic ‘rules of the game’ might realize the potential for the pyrolysis co-production of biochar and bio-oil to mitigate net GHG emissions while achieving other economic and environmental benefits. This pyrolysis process produces a high carbon biochar that can be sequestered almost permanently in soil, and energy that substitutes for fossil fuels. It is ‘carbon negative’, that is, it allows an ever-increasing carbon sink to be built up in soil. Biochar can reduce emissions of nitrous oxide and leaching of nitrates into water. It can also lift agricultural productivity through its effect on soil structure, microbiota and nutrient availability.


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