Pyrolytic behaviors, kinetics, decomposition mechanisms, product distributions and joint optimization of Lentinus edodes stipe. (1st June 2020)

• Record Type: Journal Article
• Authors: Zou, Huihuang; Zhang, Junhui; Liu, Jingyong; Buyukada, Musa; Evrendilek, Fatih; Liang, Guanjie
• Is Part Of: Energy conversion and management. Volume 213(2020)
• Publication Date: 2020-06-01
• Subjects: Pyrolysis -- Lentinus edodes stipe -- TG-FTIR -- Master-plots -- Py-GC/MS; Direct energy conversion -- Periodicals; Energy storage -- Periodicals; Energy transfer -- Periodicals; Énergie -- Conversion directe -- Périodiques; Direct energy conversion; Periodicals; 621.3105
• DOI: 10.1016/j.enconman.2020.112858
• Languages: English
• ISSNs: 0196-8904

Abstract

Graphical abstract: Highlights: Lentinus edodes stipe (LES) pyrolytic kinetics, reaction mechanisms and products were characterized. Models A 0.91, F 1.6 and F 2.1 best accounted for three pyrolytic sub-stages. d -Glucopyranoside, d -glucopyranosyl with symmetrical structure was found during pyrolysis. Maillard reaction may occur more easily in faster heating rate. The biochar surface area rose with the elevated temperature. Abstract: The pyrolytic behaviors, kinetics, decomposition mechanisms and product distributions and joint optimization of Lentinus edodes stipe (LES) were quantified. Its main pyrolysis stages (the decomposition of hemicellulose) occurred between 200 and 400 °C. Random nucleation and nuclei growth ( A 0.91 ), and orders of reaction ( F 1.6 and F 2.1 ) best explained the three sub-stages of the LES pyrolysis mechanism, respectively. The gas emissions were in good agreement with pyrolysis behavior. The main distributions of the pyrolytic products were classified into the 12 types of acids, alcohols, aldehydes, ketones, esters, phenols, glucopyranoside, aliphatic hydrocarbons, furans, aromatic hydrocarbons, N-heterocyclic substances, and N-containing substances. Cellobiose was found as pyrolytic product during 400 and 600 °C. For economic and practical reasons, the target functions of the four responses for the LES pyrolysis were jointly best optimized combining the temperature of 550 °C and the heating rate of 12.5 °C/min. This study offers theoretical and practical insights into the pyrolysis performance and products of LES or similar second-generation feedstocks in a thermal reactor.