Cited by 133Thermochemical Biomass Conversion ProcessesThermal and Kinetic AnalysisGraphite, nuclear technology, radiation studies

Biomass pyrolysis for biochar production: Study of kinetics parameters and effect of temperature on biochar yield and its physicochemical properties

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Rambhatla, Nikhill, Panicker, Tanushka Florence, Mishra, Ranjeet Kumar, Manjeshwar, Srinivas Kini, Sharma, Abhishek·2025·Results in Engineering

Abstract

This study investigates the pyrolysis kinetics behaviour and temperature effects on biochar yield and properties during pyrolysis. The kinetic study of biomass was performed using a thermogravimetric analyser at dynamic heating rates (10, 30, and 50 °C min −1 ) in an inert atmosphere. The kinetic parameters were estimated using Kissinger-Akahira-Sunose (KAS), Distributed Activation Energy Model (DAEM), and Vyazovkin model (VZ). The pyrolysis experiment was performed in a stainless steel semi-batch reactor at 400, 600, and 900 °C, 10 o C min -1 heating rate, 45 min holding time and 100 mL min −1 nitrogen gas flow rate. The produced biochar was characterised using proximate analysis, ultimate analysis, heating value, bulk density, BET surface area analyser, TGA, FTIR, and FE-SEM analysis. The physicochemical results support the candidacy of biomass for biochar and fuel production. Further, the kinetic analysis of MWS using KAS, DAEM, and VZ was found to be 233.39, 238.11, and 224.74 kJ mol −1 , respectively. The experimental results reveal that higher temperatures (600 and 900 °C) generally reduce biochar yield (19 %) due to increased devolatilization but enhance the biochar's surface area (17 %) and carbon content (4.84 %). The characterisation results of biochar confirmed higher carbon content (76.02 wt. %), HHV (36.97 MJ kg −1 ), and significant oxygen content (22.01 %) at 900 °C. Also, the thermal profile and surface morphology of the biochar suggest that biochar derived at…

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Crossref · 10.1016/j.rineng.2024.103679

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Authors
Rambhatla, N., Panicker, T. F., Mishra, R. K., Manjeshwar, S. K., & Sharma, A.
Affiliations
  • Manipal Academy of Higher Education (IN)
  • Manipal University Jaipur (IN)
Corresponding author
Mishra, Ranjeet Kumar
Venue
Results in Engineering
Publisher
Elsevier BV
Published
2025-03
Volume
25
Pages
103679
ISSN
2590-1230 (ISSN-L)
OpenAlex
W4405135050
Cited by
133
References
71
Citations by year
2026: 73 · 2025: 60
FWCI
14.56
Type
journal article
Language
en
Open access
Locations
  • Results in Engineering (publishedVersion, cc-by-nc-nd)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
Department of Chemical Engineering, Universiti Teknologi Petronas
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Thermochemical Biomass Conversion Processes
  • Physical Sciences › Materials Science › Materials Chemistry › Thermal and Kinetic Analysis
  • Physical Sciences › Materials Science › Materials Chemistry › Graphite, nuclear technology, radiation studies
Keywords
biomass pyrolysis, biochar, pyrolysis kinetics, pyrolysis temperature, biochar yield, physicochemical properties, activation energy, devolatilization, surface area, carbon content, calorific value, soil amendment, fertilizers

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