The effect of pyrolysis conditions on biochar stability as determined by three methods

@article{Crombie2013TheEO,
  title={The effect of pyrolysis conditions on biochar stability as determined by three methods},
  author={Kyle Crombie and Ondřej Ma{\vs}ek and Saran P. Sohi and Peter Brownsort and Andrew Cross},
  journal={GCB Bioenergy},
  year={2013},
  volume={5}
}
Biochar is the porous, carbonaceous material produced by thermochemical treatment of organic materials in an oxygen‐limited environment. In general, most biochar can be considered resistant to chemical and biological decomposition, and therefore suitable for carbon (C) sequestration. However, to assess the C sequestration potential of different types of biochar, a reliable determination of their stability is needed. Several techniques for assessing biochar stability have been proposed, e.g… 
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References

SHOWING 1-10 OF 54 REFERENCES
Influence of production conditions on the yield and environmental stability of biochar
Abstract Biochar, a solid product of biomass pyrolysis, is a promising concept for climate change mitigation and adaptation, as it can sequester atmospheric CO 2 while improving quality of soil where
A method for screening the relative long‐term stability of biochar
Biochar is being actively explored as a tool for long‐term soil carbon sequestration. However, in order for this to be effective the long‐term environmental stability of biochar must be assured.
Review of the stability of biochar in soils: predictability of O:C molar ratios
Biochar is not a structured homogeneous material; rather it possesses a range of chemical structures and a heterogeneous elemental composition. This variability is based on the conditions of
Characterization of biochars to evaluate recalcitrance and agronomic performance.
TLDR
Prediction of biochar stability was improved by a combination of volatile matter and H:C ratios corrected for inorganic C, and agronomic utility of biochars is not an absolute value, as it needs to meet local soil constraints.
A review of biochar and its use and function in soil
Abstract Agricultural activities and soils release greenhouse gases, and additional emissions occur in the conversion of land from other uses. Unlike natural lands, active management offers the
Oxidation of Black Carbon by Biotic and Abiotic Processes
Abstract The objectives of this study were to assess the relative importance of either biotic or abiotic oxidation of biomass-derived black carbon (BC) and to characterize the surface properties and
Impact of minerals and alkali metals on willow combustion properties
In the present work the impact of mineral variability on pyrolysis and combustion behaviour has been studied. A willow sample was pre-treated to remove certain minerals and salts by water washing and
Chemical composition and bioavailability of thermally altered Pinus resinosa (Red pine) wood
Abstract The residues remaining after incomplete combustion of vegetation (char) can contribute significantly to the carbon content of soils. Char C is considered biologically inert relative to other
Stability of biomass-derived black carbon in soils
Black carbon (BC) may play an important role in the global C budget, due to its potential to act as a significant sink of atmospheric CO2. In order to fully evaluate the influence of BC on the global
An Assessment of the Benefits and Issues Associated with the Application of Biochar to Soil: A report commissioned by the UK Department for Environment, Food and Rural Affairs and Department of Energy and Climate Change
10 Bruun et al., 2008 Stability Char fractions Dynamic Cereal straw Synthetic environmental charcoal 113 15 Pyrolysis temperature CO2; soil microbial biomass C Labile char fraction is less than 10%
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