Kinetic parameters of red pepper waste as biomass to solid biofuel

Maia, Alex Sandro Campos; Morais, Leandro Cardoso de

doi:10.1016/j.biortech.2015.12.055

Cited by 307 publications

(81 citation statements)

References 30 publications

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“…They estimated the average E a for cellulose, hemicellulose, and lignin to be 141, 126, and 167 kJ/mol, respectively. According to their study, the E a required was the highest for lignin, which was in contradiction to the study conducted by Huang et al There are other studies available in the literature regarding the estimation of E a for different kinds of biomass using the model‐free method …”

Section: Introductionmentioning

confidence: 60%

Predicting the biomass conversion performance in a fluidized bed reactor using isoconversional model‐free method

et al. 2019

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The first objective of this study to analyze the detailed pyrolysis kinetics of four Canadian feedstocks through two techniques: thermogravimetric analysis (TGA) using the isoconversional model-free method; and fast pyrolysis in a fluidized bed reactor using the simple Arrhenius model. The four biomass feedstocks were pyrolyzed in a fluidized bed reactor at 400-520 8C. The experiments were conducted for three size fractions. The thermogravimetric analysis was performed at four heating rates (2, 5, 10, and 15 8C/min) in an inert atmosphere. TGA experiments showed that the decomposition rate of agricultural residues was significantly lower than woody biomass due to high volatiles and low ash content in the latter. The range of average activation energy from fluidized bed experiments was 150-168 kJ/mol and 160-180 kJ/mol from TGA experiments. The difference is attributed to different methodology in the experiments and the determination of kinetic parameters. The second objective was to apply the global kinetic parameters from the TGA to predict the decomposition of biomass to biochar and to compare it with the experimental biochar left in the fluidized bed reactor at different temperatures. This study also confirmed that at high temperatures for all the feedstocks, average kinetics parameters obtained from the TGA could produce fluidized bed biomass conversion results with an average variation of 4 %.

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Section: Introductionmentioning

confidence: 60%

Predicting the biomass conversion performance in a fluidized bed reactor using isoconversional model‐free method

et al. 2019

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“…The extent of overall combustion performance and combustion potential can be reflected by S and D b , respectively. The four pyrolysis performance indicators are as follows [22,23]:…”

Section: Pyrolysis Performance Indicesmentioning

confidence: 99%

Comparison of Combustion and Pyrolysis Behavior of the Peanut Shells in Air and N2: Kinetics, Thermodynamics and Gas Emissions

Xiao

Fang

et al. 2020

Sustainability

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The influences of four heating rates on the combustion and pyrolysis behavior in the N2 and air atmosphere were investigated by the Fourier transform infrared spectrometry (FTIR) and thermogravimetric (TG) analysis. the distributed activation energy model (DEAM) and Flynn-Wall-Ozawa (FWO) were used to estimate Ea and A, ΔH, ΔG and ΔS. Experimental results showed that the similar thermal behavior emerged, but the temperatures in the air and N2 atmospheres representing the end of the reaction were about 500 °C and 550 °C, respectively. The results of FTIR showed the peak positions were basically the same, but the concentrations of aromatics, aldehydes and ketones produced by pyrolysis in the N2 atmosphere were higher. When the heating rate was 20 K/min, the comprehensive combustion parameters were 56.442 and 6.871 × 10−7%2/(min2• K3) in the air and N2 atmospheres, respectively, indicating that the peanut shells had great potential to become bioenergy.

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“…The positive Δ H values suggests that higher enthalpy values indicated a less reactive system . Δ S was negative in the temperature range, which indicated that cellulose has a high degree of arrangement and physical and/or chemical processes and the disorder degree formed via bond dissociations was lower the initial reactants . The raw material has the highest enthalpy value and lowest entropy value, which indicates that its order is the largest.…”

Section: Resultsmentioning

confidence: 81%

Catalytic copyrolysis of metal impregnated biomass and plastic with Ni‐based HZSM‐5 catalyst: Synergistic effects, kinetics and product distribution

et al. 2020

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The present work aims to investigate the thermal behavior, kinetics, thermodynamics, and product distribution during copyrolysis of transition metal salt (Ni, Co, Zn, Cu, and Fe)-added biomass and model compounds with low density polyethylene(LDPE) over a Ni-based HZSM-5 catalyst by TGA and fixed bed reactor. The interactions and reaction mechanisms during copyrolysis were evaluated. The influence of Ni-impregnated biomass (C-M) and Nimodified HZSM-5 (Ni/HZ) on the formation of pyrolysis bio-oil from biomass and model compounds and its subsequent effect on catalytic pyrolysis vapor upgrading was discussed. The results indicated that the presence of transition metal decreased the thermal degradation temperature and thermodynamics parameters; maximum decomposition rate, and reaction complexity. Ni/HZ catalyst could further decrease the activation energy, accelerate the reaction rate and change reaction process, and the modified samples/LDPE under copyrolysis with HZSM-5 catalyst presented a more significant effect than Ni/HZ catalyst. Subsequently, the Ea of pine, cellulose and lignin changed from 24.11, 18.29, and 28.68 kJ/mol (CP@Ni/HZ) to 56.04, 69.84, and 16.21 kJ/mol (CP-Ni@HZSM-5), respectively. In addition, Ni could inhibit the depolymerization of cellulose and promoted the formation of char, coke, and lignin derived phenolics. And Ni-impregnated biomass reduced the formation of desired aromatic hydrocarbons, but result in increasing of the char and non-condensable gases. But Ni/HZ catalysts promote the conversion of biomass to target products.

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Kinetic parameters of red pepper waste as biomass to solid biofuel

Cited by 307 publications

References 30 publications

Predicting the biomass conversion performance in a fluidized bed reactor using isoconversional model‐free method

Predicting the biomass conversion performance in a fluidized bed reactor using isoconversional model‐free method

Comparison of Combustion and Pyrolysis Behavior of the Peanut Shells in Air and N2: Kinetics, Thermodynamics and Gas Emissions

Catalytic copyrolysis of metal impregnated biomass and plastic with Ni‐based HZSM‐5 catalyst: Synergistic effects, kinetics and product distribution

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