Study on thermochemical characteristics properties and pyrolysis kinetics of the mixtures of waste corn stalk and pyrolusite

Du, Jun; Gao, Lei; Yang, Yong; Chen, Guo; Guo, Shenghui; Omran, Mamdouh; Chen, Jin; Ruan, Roger

doi:10.1016/j.biortech.2020.124660

Cited by 40 publications

(2 citation statements)

References 25 publications

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“…The Kissinger-Akahira-Sunose integral isoconversional model is a method where activation energy is assumed to be constant at a given conversion [73,74]. It has been applied to biomasses such as garlic hush, which was investigated by Sigh et al [75], or kenaf (Hibiscus cannabinus L.), which was studied by Lee et al [76].…”

Section: The Kissinger-akahira-sunose Isoconversional Kinetic Modelmentioning

confidence: 99%

Determination of the Kinetics and Thermodynamic Parameters of Lignocellulosic Biomass Subjected to the Torrefaction Process

et al. 2021

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The torrefaction process upgrades biomass characteristics and produces solid biofuels that are coal-like in their properties. Kinetics analysis is important for the determination of the appropriate torrefaction condition to obtain the best utilization possible. In this study, the kinetics (Friedman (FR) and Kissinger–Akahira–Sunose (KAS) isoconversional methods) of two final products of lignocellulosic feedstocks, miscanthus (Miscanthus x giganteus) and hops waste (Humulus Lupulus), were studied under different heating rates (10, 15, and 20 °C/min) using thermogravimetry (TGA) under air atmosphere as the main method to investigate. The results of proximate and ultimate analysis showed an increase in HHV values, carbon content, and fixed carbon content, followed by a decrease in the VM and O/C ratios for both torrefied biomasses, respectively. FTIR spectra confirmed the chemical changes during the torrefaction process, and they corresponded to the TGA results. The average Eα for torrefied miscanthus increased with the conversion degree for both models (25–254 kJ/mol for FR and 47–239 kJ/mol for the KAS model). The same trend was noticed for the torrefied hops waste samples; the values were within the range of 14–224 kJ/mol and 60–221 kJ/mol for the FR and KAS models, respectively. Overall, the Ea values for the torrefied biomass were much higher than for raw biomass, which was due to the different compositions of the torrefied material. Therefore, it can be concluded that both torrefied products can be used as a potential biofuel source.

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Section: The Kissinger-akahira-sunose Isoconversional Kinetic Modelmentioning

confidence: 99%

Determination of the Kinetics and Thermodynamic Parameters of Lignocellulosic Biomass Subjected to the Torrefaction Process

et al. 2021

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“…This is related to the space inside the large pores, being big enough to allow the diffusion of primary products and to favor the formation of PAH molecules. However, PAH are undesirable compounds as they act as coke precursors [48]. Lin et al [49] compared four zeolites with different pore sizes (HZSM-5, HBeta, HY and HUSY), and highlighted that a zeolite with a medium pore size can modulate the aromatic production by shape selectivity, resulting in high yields of aromatics and hindering coke formation.…”

Section: Zeolites and Mesoporous Materialsmentioning

confidence: 99%

Selecting Catalysts for Pyrolysis of Lignocellulosic Biomass

Rangel

Mayer

Carvalho

et al. 2023

Biomass

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The pyrolysis of lignocellulosic biomass is a promising technology for obtaining renewable chemicals and fuels to replace fossil-based products. However, due to the complexity of the lignin, cellulose and hemicellulose molecules, a large variety of compounds are often formed, making commercial implementation difficult. The use of a catalyst during reactions has been recognized as one of the major improvements in pyrolysis, allowing the production of selected compounds. Moreover, the large number of available catalysts opens up a wide range of possibilities for controlling the reaction network. Zeolites, hierarchical zeolites, alkali and alkaline earth oxides, transition metals and carbonaceous materials, among others, have been investigated in the pyrolysis of a variety of biomasses. In addition, bifunctional catalysts play a role in pyrolysis, as well as the addition of plastics as hydrogen donors. This review aims to present and discuss in detail state-of-the-art catalytic pyrolysis, focusing on the relationships between the properties of the catalysts and the obtained products. A guideline for selecting catalysts for lignocellulosic biomass is also provided.

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Physicochemical and Pyrolysis Kinetic Aspects of Biomass Feedstocks: An Overview

Bamboriya¹,

Varma

Yadav³

et al. 2022

Advances in Chemical, Bio and Environmental Engineering

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Study on thermochemical characteristics properties and pyrolysis kinetics of the mixtures of waste corn stalk and pyrolusite

Cited by 40 publications

References 25 publications

Determination of the Kinetics and Thermodynamic Parameters of Lignocellulosic Biomass Subjected to the Torrefaction Process

Determination of the Kinetics and Thermodynamic Parameters of Lignocellulosic Biomass Subjected to the Torrefaction Process

Selecting Catalysts for Pyrolysis of Lignocellulosic Biomass

Physicochemical and Pyrolysis Kinetic Aspects of Biomass Feedstocks: An Overview

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