Biochar stability scores from analytical pyrolysis (Py-GC-MS)

Stef Ghysels; Dilani Rathnayake; Przemyslaw Maziarka; Ondřej Mašek; Saran Sohi; Frederik Ronsse

doi:10.1016/j.jaap.2021.105412

Biochar stability scores from analytical pyrolysis (Py-GC-MS)

Stef Ghysels^*, Dilani Rathnayake, Przemyslaw Maziarka, Ondřej Mašek, Saran Sohi, Frederik Ronsse

^*Corresponding author for this work

School of Geosciences

Research output: Contribution to journal › Article › peer-review

Abstract

The long-term stability of biochar in soil is key for carbon capture and storage and soil amelioration. Yet, its assessment is hampered by the long time-horizons needed to actually probe biochar's stability. Therefore, quick and reliable estimation methods are sought. Analytical pyrolysis (Py-GC-MS) offers a quick tool to predict biochar's stability in soil, if adequate and validated metrics can be extracted from it. This work derives and validates stability scores from biochar pyrograms and advanced data analysis. The stability scores were benchmarked by comparison with other stability metrics (Edinburgh stability tool, fixed carbon content and atomic H/C ratio). Calibration of the stability scores with these stability metrics had an R² between 0.61 and 0.95; validation resulted in R² between 0.59 and 0.72. Overall, this work illustrates how Py-GC-MS can lead to simple and adequate predictors of biochar stability.

Original language	English
Article number	105412
Journal	Journal of Analytical and Applied Pyrolysis
Volume	161
DOIs	https://doi.org/10.1016/j.jaap.2021.105412
Publication status	Published - 1 Jan 2022

Keywords / Materials (for Non-textual outputs)

Biochar
Micropyrolysis
Soil amendment
Stability indices
Stability tool

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10.1016/j.jaap.2021.105412

JAAP_R2_AAMAccepted author manuscript, 6.59 MBLicence: Creative Commons: Attribution (CC-BY)

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title = "Biochar stability scores from analytical pyrolysis (Py-GC-MS)",

abstract = "The long-term stability of biochar in soil is key for carbon capture and storage and soil amelioration. Yet, its assessment is hampered by the long time-horizons needed to actually probe biochar's stability. Therefore, quick and reliable estimation methods are sought. Analytical pyrolysis (Py-GC-MS) offers a quick tool to predict biochar's stability in soil, if adequate and validated metrics can be extracted from it. This work derives and validates stability scores from biochar pyrograms and advanced data analysis. The stability scores were benchmarked by comparison with other stability metrics (Edinburgh stability tool, fixed carbon content and atomic H/C ratio). Calibration of the stability scores with these stability metrics had an R2 between 0.61 and 0.95; validation resulted in R2 between 0.59 and 0.72. Overall, this work illustrates how Py-GC-MS can lead to simple and adequate predictors of biochar stability.",

keywords = "Biochar, Micropyrolysis, Soil amendment, Stability indices, Stability tool",

author = "Stef Ghysels and Dilani Rathnayake and Przemyslaw Maziarka and Ond{\v r}ej Ma{\v s}ek and Saran Sohi and Frederik Ronsse",

note = "Funding Information: This study received funding from the European Union{\textquoteright}s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No 721991 . Funding Information: This study received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No 721991. Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

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doi = "10.1016/j.jaap.2021.105412",

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TY - JOUR

T1 - Biochar stability scores from analytical pyrolysis (Py-GC-MS)

AU - Ghysels, Stef

AU - Rathnayake, Dilani

AU - Maziarka, Przemyslaw

AU - Mašek, Ondřej

AU - Sohi, Saran

AU - Ronsse, Frederik

N1 - Funding Information: This study received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No 721991 . Funding Information: This study received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No 721991. Publisher Copyright: © 2021 Elsevier B.V.

PY - 2022/1/1

Y1 - 2022/1/1

N2 - The long-term stability of biochar in soil is key for carbon capture and storage and soil amelioration. Yet, its assessment is hampered by the long time-horizons needed to actually probe biochar's stability. Therefore, quick and reliable estimation methods are sought. Analytical pyrolysis (Py-GC-MS) offers a quick tool to predict biochar's stability in soil, if adequate and validated metrics can be extracted from it. This work derives and validates stability scores from biochar pyrograms and advanced data analysis. The stability scores were benchmarked by comparison with other stability metrics (Edinburgh stability tool, fixed carbon content and atomic H/C ratio). Calibration of the stability scores with these stability metrics had an R2 between 0.61 and 0.95; validation resulted in R2 between 0.59 and 0.72. Overall, this work illustrates how Py-GC-MS can lead to simple and adequate predictors of biochar stability.

AB - The long-term stability of biochar in soil is key for carbon capture and storage and soil amelioration. Yet, its assessment is hampered by the long time-horizons needed to actually probe biochar's stability. Therefore, quick and reliable estimation methods are sought. Analytical pyrolysis (Py-GC-MS) offers a quick tool to predict biochar's stability in soil, if adequate and validated metrics can be extracted from it. This work derives and validates stability scores from biochar pyrograms and advanced data analysis. The stability scores were benchmarked by comparison with other stability metrics (Edinburgh stability tool, fixed carbon content and atomic H/C ratio). Calibration of the stability scores with these stability metrics had an R2 between 0.61 and 0.95; validation resulted in R2 between 0.59 and 0.72. Overall, this work illustrates how Py-GC-MS can lead to simple and adequate predictors of biochar stability.

KW - Biochar

KW - Micropyrolysis

KW - Soil amendment

KW - Stability indices

KW - Stability tool

U2 - 10.1016/j.jaap.2021.105412

DO - 10.1016/j.jaap.2021.105412

M3 - Article

AN - SCOPUS:85121129158

SN - 0165-2370

VL - 161

JO - Journal of Analytical and Applied Pyrolysis

JF - Journal of Analytical and Applied Pyrolysis

M1 - 105412

ER -

Biochar stability scores from analytical pyrolysis (Py-GC-MS)

Abstract

Keywords / Materials (for Non-textual outputs)

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