The DOI matches its Crossref record; 74 of the 76 references it cites were found in a registry or an index.
Chars produced by slow pyrolysis and hydrothermal carbonization vary in carbon sequestration potential and greenhouse gases emissions
Open accessAbstract
Bio-char, biomass that has been deliberately charred to slow its rate of decomposition, has been proposed as an amendment with the potential to sequester carbon and improve certain soil properties. Slow pyrolysis (temperature ≤500 °C) and hydrothermal carbonization (low temperature, high pressure) are two efficient methods to produce bio-char with high yield and are applicable to a broad range of feedstocks. Chars made using slow pyrolysis (PC) and hydrothermal carbonization (HTC) of the same feedstock material (corn, C4) differed in physical appearance, chemical properties and decomposition behavior. We added these HTC and PC chars as amendments to three soils with C3-derived organic matter that differed in clay content, pH, and land use (managed spruce forest, unmanaged deciduous forest and agriculture), and compared their impacts on carbon sequestration and net greenhouse gas (CO2, 13CO2, N2O and CH4) emissions. HTC addition (1% w/w) significantly increased CO2 emissions in all three soils (p < 0.001), with much of the extra C derived from HTC decomposition. In contrast, PC addition (1% w/w) had almost no impact on deciduous forest soil and actually decreased CO2 emission from the agricultural soil. HTC treatment resulted in increased CH4 emission from all soils but reduced N2O fluxes in the agricultural and spruce forest soils. PC amendment had no significant effect on CH4 emission, and resulted in intermediate levels of N2O emission (between control and HTC treatments). Although both HTC and PC chars were produced from the same feedstock, PC had markedly higher potential for carbon sequestration than HTC.
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“Kammann et al. (2012) and Schimmelpfennig et al. (2014) noticed identical outcomes, i.e., the emission of CO 2 and CH 4 during their carbon sequestration study using hydrochars derived from ryegrass and peanut hulls and Miscanthus giganteus as feedstocks [86,115].”
From Hydrochar: A Review on Its Production Technologies and Applications (2021) · cites this paper as [115]
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Application of biochar for the removal of pollutants from aqueous solutions
Tan, X., Liu, Y., Zeng, G., Wang, X., Hu, X., Gu, Y., & Yang, Z. (2015) · Chemosphere · doi:10.1016/j.chemosphere.2014.12.058 · Cited by 2,081
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Effect of process parameters on production of biochar from biomass waste through pyrolysis: A review
Tripathi, M., Sahu, J. N., & Ganesan, P. (2016) · Renewable and Sustainable Energy Reviews · doi:10.1016/j.rser.2015.10.122 · Cited by 1,759
Biochar stability in soil: meta-analysis of decomposition and priming effects
Wang, J., Xiong, Z., & Kuzyakov, Y. (2016) · GCB Bioenergy · doi:10.1111/gcbb.12266 · Cited by 1,316
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Metadata
- Authors
- Malghani, S., Gleixner, G., & Trumbore, S. E.
- Affiliations
- Max Planck Institute for Biogeochemistry (DE)
- Corresponding author
- Malghani, Saadatullah
- Venue
- Soil Biology and Biochemistry
- Publisher
- Elsevier BV
- Published
- 2013-07
- Volume
- 62
- Pages
- 137-146
- ISSN
- 0038-0717 (ISSN-L)
- OpenAlex
- W2162229938
- Cited by
- 202
- References
- 76
- Citations by year
- 2026: 8 · 2025: 12 · 2024: 18 · 2023: 14 · 2022: 19 · 2021: 21 · 2020: 15 · 2019: 15 · 2018: 15 · 2017: 19 · 2016: 14 · 2015: 17 · 2014: 14 · 2013: 1
- FWCI
- 22.22
- Type
- journal article
- Language
- en
- Open access
- green
- escholarship.org
- Licence
- Locations
- Soil Biology and Biochemistry (publishedVersion)
- eScholarship (California Digital Library) (submittedVersion, cc-by)
- MPG.PuRe (Max Planck Society) (submittedVersion)
- Funders
- International Max-Planck Research School
- Topics
- Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Carbon and Nitrogen Dynamics
- Physical Sciences › Energy › Fuel Technology › Thermochemical Biomass Conversion Processes
- Physical Sciences › Environmental Science › Global and Planetary Change › Fire effects on ecosystems
- Keywords
- biochar, slow pyrolysis, hydrothermal carbonization, carbon sequestration, greenhouse gas emissions, soil amendment, maize, soil CO2 efflux, methane emissions, nitrous oxide emissions, soil organic matter, spruce forest soil, agricultural soils, deciduous forest soil
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