Thermokinetic Mapping of Activation Energy Evolution from Biomass to Biochar and Activated Carbon

Basit Öğe Kaydı
dc.contributor.authorKorkmaz, Aydan Aksogan
dc.contributor.authorKaya, Harun
dc.contributor.authorErsoy Atalay, Funda
dc.date.accessioned2026-04-04T13:33:39Z
dc.date.available2026-04-04T13:33:39Z
dc.date.issued2026
dc.departmentİnönü Üniversitesi
dc.description.abstractIntroduction: Understanding the thermokinetic evolution of biomass-derived carbons is critical for optimizing their structural stability and functional performance in advanced applications. Agricultural residues, such as pepper, tomato, and eggplant waste, offer sustainable carbon precursors; however, the evolution of activation energy during their transformation into biochar and activated carbon remains poorly understood. Methodology: Raw biomass, derived biochars, and KOH-activated carbons were systematically investigated using thermogravimetric analysis under controlled heating conditions. Kinetic parameters were determined by combining the Arrhenius, Coats - Redfern, and isoconversional Kissinger - Akahira - Sunose/Ozawa - Flynn - Wall models to track changes in activation energy throughout the conversion pathway. Results and Discussion: The materials exhibited multistage thermal degradation behavior, with significant mass losses associated with hemicellulose and cellulose decomposition between 200 and 400 degrees C. Progressive shifts of Tmax toward higher temperatures and increased residual mass from biomass to activated carbon indicated enhanced carbon consolidation and thermal stability. Activation energy increased systematically from raw biomass (-66 to 55kJ mol-1) to biochar (63-93kJ mol-1), reaching up to 118kJ mol-1 for activated carbons, reflecting a transition to carbon lattice - controlled kinetics. Conclusion and Recommendations: This study elucidates the structure - reactivity transformation from biomass to engineered carbons driven by aromatization and stabilization. The presented thermokinetic mapping provides a rational framework for designing biomass-derived carbons tailored for adsorption, catalysis, and energy storage applications.
dc.identifier.doi10.1080/00102202.2026.2618502
dc.identifier.issn0010-2202
dc.identifier.issn1563-521X
dc.identifier.scopus2-s2.0-105027911659
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1080/00102202.2026.2618502
dc.identifier.urihttps://hdl.handle.net/11616/109285
dc.identifier.wosWOS:001665056500001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherTaylor & Francis Inc
dc.relation.ispartofCombustion Science and Technology
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250329
dc.subjectActivated carbon
dc.subjectactivation energy
dc.subjectbiochar
dc.subjectbiomass
dc.subjectthermokinetics
dc.titleThermokinetic Mapping of Activation Energy Evolution from Biomass to Biochar and Activated Carbon
dc.typeArticle

Dosyalar

Koleksiyon

WoS İndeksli Yayınlar Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu