Cited by 1,113Thermochemical Biomass Conversion ProcessesSoil Carbon and Nitrogen DynamicsAdsorption and biosorption for pollutant removal

Characterization of biochars to evaluate recalcitrance and agronomic performance

Enders, Akio, Hanley, Kelly, Whitman, Thea, Joseph, Stephen, Lehmann, Johannes·2012·Bioresource Technology

Abstract

Biochars (n=94) were found to have ash contents from 0.4% to 88.2%, volatile matter from 13.2% to 70.0%, and fixed carbon from 0% to 77.4% (w/w). Greater pyrolysis temperature for low-ash biochars increased fixed carbon, but decreased it for biochars with more than 20% ash. Nitrogen recovery varied depending on feedstock used to a greater extent (12-68%) than organic (25-45%) or total C (41-76%) at a pyrolysis temperature of 600 °C. Fixed carbon production ranged from no enrichment in poultry biochar to a 10-fold increase in corn biochar (at 600 °C). Prediction of biochar stability was improved by a combination of volatile matter and H:C ratios corrected for inorganic C. In contrast to stability, agronomic utility of biochars is not an absolute value, as it needs to meet local soil constraints. Woody feedstock demonstrated the greatest versatility with pH values ranging from 4 to 9.

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Crossref · 10.1016/j.biortech.2012.03.022

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Authors
Enders, A., Hanley, K., Whitman, T., Joseph, S., & Lehmann, J.
Affiliations
  • Cornell University (US)
  • UNSW Sydney (AU)
Corresponding author
Lehmann, Johannes
Venue
Bioresource Technology
Publisher
Elsevier BV
Published
2012-06
Volume
114
Pages
644-653
ISSN
0960-8524 (ISSN-L)
OpenAlex
W2056641622
Cited by
1,113
References
53
Citations by year
2026: 91 · 2025: 91 · 2024: 82 · 2023: 105 · 2022: 97 · 2021: 105 · 2020: 104 · 2019: 88 · 2018: 84 · 2017: 66 · 2016: 71 · 2015: 55 · 2014: 45 · 2013: 21 · 2012: 7
FWCI
23.34
Type
journal article
Language
en
Open access
closed
Locations
  • Bioresource Technology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Science Foundation
  • New York State Energy Research and Development Authority
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Thermochemical Biomass Conversion Processes
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Carbon and Nitrogen Dynamics
  • Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
Keywords
biochar, pyrolysis temperature, ash content, fixed carbon, volatile matter, nitrogen recovery, biochar stability, feedstock, poultry manure, H/C ratio, soil amendment, agronomic performance
MeSH terms
Charcoal, Wood, Incineration

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