Cited by 1,103Soil Carbon and Nitrogen DynamicsThermochemical Biomass Conversion ProcessesFire effects on ecosystems

Abiotic and microbial oxidation of laboratory-produced black carbon (biochar)

Zimmerman, Andrew R.·2010·Environmental Science & Technology

Abstract

Pyrogenic or "black" carbon is a soil and sediment component that may control pollutant migration. Biochar, black carbon made intentionally by biomass pyrolysis, is increasingly discussed as a possible soil amendment to increase fertility and sequester carbon. Though thought to be extremely refractory, it must degrade at some rate. Better understanding of the rates and factors controlling its remineralization in the environment is needed. Release of CO(2) was measured over 1 year from microbial and sterile incubations of biochars made from a range of biomass types and combustion conditions. Carbon release from abiotic incubations was 50-90% that of microbially inoculated incubations, and both generally decreased with increasing charring temperature. All biochars displayed log-linearly decreasing mineralization rates that, when modeled, were used to calculate 100 year C losses of 3-26% and biochar C half-lives on orders ranging from 10(2) to 10(7) years. Because biochar lability was found to be strongly controlled by the relative amount of a more aliphatic and volatile component, measurements of volatile weight content may be a convenient predictor of biochar C longevity. These results are of practical value to those considering biochar as a tool for soil remediation, amelioration, or atmospheric C sequestration.

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Crossref · 10.1021/es903140c

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Authors
Zimmerman, A. R.
Affiliations
University of Florida (US)
Corresponding author
Zimmerman, Andrew R.
Venue
Environmental Science & Technology
Published
2010-01-19
Volume
44
Issue
4
Pages
1295-1301
ISSN
  • 0013-936X (ISSN-L)
  • 1520-5851
OpenAlex
W2141370599
Cited by
1,103
References
47
Citations by year
2026: 54 · 2025: 66 · 2024: 62 · 2023: 74 · 2022: 67 · 2021: 87 · 2020: 76 · 2019: 62 · 2018: 75 · 2017: 54 · 2016: 76 · 2015: 80 · 2014: 94 · 2013: 70 · 2012: 48
FWCI
92.57
Type
journal article
Language
en
Open access
closed
Locations
  • Environmental Science & Technology (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Science Foundation
Topics
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Carbon and Nitrogen Dynamics
  • Physical Sciences › Engineering › Biomedical Engineering › Thermochemical Biomass Conversion Processes
  • Physical Sciences › Environmental Science › Global and Planetary Change › Fire effects on ecosystems
Keywords
biochar, black carbon, pyrogenic carbon, carbon mineralization, carbon sequestration, biomass pyrolysis, charring temperature, volatile organic compounds, microbial oxidation, abiotic oxidation, soil amendment, carbon lability, soil remediation
MeSH terms
Charcoal, Environmental Monitoring, Oxidation-Reduction

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