@article{McCall:2024:10.1021/acssusresmgt.4c00148,
author = {McCall, MA and Watson, JS and Sephton, MA},
doi = {10.1021/acssusresmgt.4c00148},
journal = {ACS Sustainable Resource Management},
pages = {1975--1983},
title = {Predicting stability of barley straw-derived biochars using Fourier transform infrared spectroscopy},
url = {http://dx.doi.org/10.1021/acssusresmgt.4c00148},
volume = {1},
year = {2024}
}

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TY  - JOUR
AB  - In order to estimate the ability of biochar to sequester carbon as part of greenhouse gas removal technology, there is a need for rapid and accessible estimations of biochar stability. This study employs a novel method using Fourier transform infrared spectroscopy (FTIR) to predict common stability indicators, namely H:C and O:C molar ratios. Biochars derived from barley straw were produced at temperatures from 150 to 700 °C. The greatest compositional changes of the biochars occurred between 200 and 400 °C. All biochars produced at ≥400 °C achieved H:C < 0.7 and O:C < 0.4, indicative of biochars suitable for soil application. Regression models were built using FTIR data to predict H:C and O:C molar ratios. The H:C model produced a coefficient of determination (R2) of 0.99, mean absolute percentage error (MAPE) 6.86%, and root-mean-square error (RMSE) of 0.07. The O:C model achieved the same R2 (0.99), MAPE of 9.02%, and RMSE of 0.03. Our results demonstrate that combining FTIR data with modeling is a promising rapid and accessible method for attaining biochar stability data.
AU  - McCall,MA
AU  - Watson,JS
AU  - Sephton,MA
DO  - 10.1021/acssusresmgt.4c00148
EP  - 1983
PY  - 2024///
SN  - 2837-1445
SP  - 1975
TI  - Predicting stability of barley straw-derived biochars using Fourier transform infrared spectroscopy
T2  - ACS Sustainable Resource Management
UR  - http://dx.doi.org/10.1021/acssusresmgt.4c00148
VL  - 1
ER  - 

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