Thermal decomposition of castor oil, corn starch, soy protein, lignin, xylan, and cellulose during fast pyrolysis. (April 2019)

• Record Type: Journal Article
• Authors: Qiao, Yingyun; Wang, Bo; Ji, Yaoyao; Xu, Fanfan; Zong, Peijie; Zhang, Jinhong; Tian, Yuanyu
• Is Part Of: Bioresource technology. Volume 278(2019)
• Page Start: 287
• Page End: 295
• Publication Date: 2019-04
• Subjects: Pyrolysis -- TG-FTIR -- Biomass chemical composition -- Kinetics -- Thermodynamics; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2019.01.102
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: Six compounds were selected as model compounds of biomass composition. Pyrolysis experiments were performed under heating rate >100 °C min −1 . Castor oil had the highest Ea whereas xylan had the lowest Ea . Biomass rich in lipids and cellulose was more suitable to produce energy. Abstract: The aim of this work was to study the pyrolysis behavior of castor oil, corn starch, soy protein, lignin, xylan, and cellulose. The pyrolysis behavior, gaseous product evolution, kinetics and thermodynamics of these model compounds were investigated via TG-FTIR under high heating rates. The TG/DTG curves showed that castor oil had the widest pyrolysis temperature zone and lignin had the highest residual rate. The apparent activation energy of these model compounds was calculated by Kissinger-Akahira-Sunose method. The kinetic results revealed that the average bond energy of chemical compositions was in the order of lipid > lignin > starch > cellulose > protein > hemicellulose. The pre-exponential factor analysis showed that there were a large number of surface reactions for soy protein and xylan during pyrolysis, however other model compounds were not surface controlled. The thermodynamic parameters including G, Δ S, Δ H for six model compounds were also calculated.