Pyrolysis of pellets made with biomass and glycerol: Kinetic analysis and evolved gas analysis

Bartocci, Pietro; Anca-Couce, Andrés; Slopiecka, Katarzyna; Nefkens, S; Evic, Nikola; Retschitzegger, Stefan; Barbanera, Marco; Buratti, Cinzia; Cotana, Franco; Bidini, Gianni; Fantozzi, Francesco

doi:10.1016/j.biombioe.2016.12.004

Cited by 48 publications

(10 citation statements)

References 28 publications

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“…Sait et al [9] have reported activation energies below 44 kJ mol −1 for date palm biomass, which significantly deviates from the values reported here, 146-204 kJ mol −1 . The activation energy values reported here are in the same order of what has been reported for other non-arid-land lignocellulosic biomass [15][16][17]. Gasparovic et al [15] determined the kinetic parameters of wood chip using the generalized isoconversional method and activation energy values of between 131.56 and 215.94 kJ mol −1 depending on the conversion.…”

Section: Summary Of Parameterssupporting

confidence: 80%

“…The same author also obtained 1.46 ×·10 11 min −1 as the pre-exponential factor using the Kissinger method as well. Bartocci et al [16] have reported activation energies for the three main components of lignocellulosic biomass, 154.1 kJ mol −1 , 224.7 kJ mol −1 , and 190.5 kJ mol −1 for hemicellulose, cellulose, and lignin, respectively. This shows the activation energy values obtained for both P. dactylifera leaves and S. bigelovii are within the range of values obtained by other authors using other non-arid-land lignocellulosic biomasses as reactants.…”

Section: Summary Of Parametersmentioning

confidence: 99%

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Pyrolysis Kinetics of the Arid Land Biomass Halophyte Salicornia Bigelovii and Phoenix Dactylifera Using Thermogravimetric Analysis

2018

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Biomass availability in arid regions is challenging due to limited arable land and lack of fresh water. In this study, we focus on pyrolysis of two biomasses that are typically abundant agricultural biomasses in arid regions, focusing on understanding the reaction rates and Arrhenius kinetic parameters that describe the pyrolysis reactions of halophyte Salicornia bigelovii, date palm (Phoenix dactylifera) and co-pyrolysis biomass using thermo-gravimetric analysis under non-isothermal conditions. The mass loss data obtained from thermogravimetric analysis of S. bigelovii and date palm revealed the reaction rate peaked between 592 K and 612 K for P. dactylifera leaves and 588 K and 609 K for S. bigelovii at heating rates, 5 K/min, 10 K/min and 15 K/min during the active pyrolysis phase. The activation energy for S. bigelovii and P. dactylifera leaves during this active pyrolysis phase were estimated using the Kissinger method as 147.6 KJ/mol and 164.7 KJ/mol respectively with pre-exponential factors of 3.13 × 10 9 /min and 9.55 × 10 10 /min for the respective biomasses. Other isoconversional models such as the Flynn-Wall-Ozawa were used to determine these kinetic parameters during other phases of the pyrolysis reaction and gave similar results.

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Section: Summary Of Parameterssupporting

confidence: 80%

Section: Summary Of Parametersmentioning

confidence: 99%

Pyrolysis Kinetics of the Arid Land Biomass Halophyte Salicornia Bigelovii and Phoenix Dactylifera Using Thermogravimetric Analysis

2018

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“…Both values are in agreement with this study. The reaction order is also in agreement with Reference [32].…”

Section: Resultssupporting

confidence: 91%

“…In particular the work of Conesa et al [30] reports a value of 3.0 × 10 17 min −1 , which is quite similar to the one obtained in this study. Dealing with the order of reaction usually a first order reaction is assumed by Antal and Varheghyi [31], and also confirmed in Reference [32].…”

Section: Resultsmentioning

confidence: 86%

Kinetic Analysis of Digestate Slow Pyrolysis with the Application of the Master-Plots Method and Independent Parallel Reactions Scheme

et al. 2019

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The solid fraction obtained by mechanical separation of digestate from anaerobic digestion plants is an attractive feedstock for the pyrolysis process. Especially in the case of digestate obtained from biogas plants fed with energy crops, this can be considered a lignin rich residue. The aim of this study is to investigate the pyrolytic kinetic characteristics of solid digestate. The Starink model-free method has been used for the kinetic analysis of the pyrolysis process. The average Activation Energy value is about 204.1 kJ/mol, with a standard deviation of 25 kJ/mol, which corresponds to the 12% of the average value. The activation energy decreased along with the conversion degree. The variation range of the activation energy is about 99 kJ/mol, this means that the average value cannot be used to statistically represent the whole reaction. The Master-plots method was used for the determination of the kinetic model, obtaining that n-order was the most probable one. On the other hand, the process cannot be modeled with a single-step reaction. For this reason it has been used an independent parallel reactions scheme to model the complete process.

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“…[3501][3502][3503][3504][3505][3506][3507][3508][3509][3510][3511][3512] key factor in the evaluation of biomass materials, because thermochemical process depends on the operating conditions and the physical and chemical properties of the sample. The kinetic parameters, such as activation energy and pre-exponential factor, can be calculated for a constant extent of conversion by the iso-conversional methods [7,8].…”

Section: Introductionmentioning

confidence: 99%

Thermal decomposition kinetics of raw and treated olive waste

Wang

Peng

2019

THERM SCI

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The pyrolysis characteristic of raw and ultrasound assisted enzyme hydrolysis treated (UAEH) olive waste was investigated using the thermogravimetric analysis at 5, 10, 15, and 20 °C per minute in the nitrogen atmosphere. The thermal decomposition was divided into three stages in the thermograph curve, and the thermogravimetric curve showed the same decomposition trend for two samples. The temperature interval and peak temperature were different for two different samples, and moved to higher temperature with the increase in heating rate. Differential thermogravimetric and differential scanning calorimetry curves depicted that the structure and composition of samples were changed by UAEH. Meanwhile, the kinetic parameters were calculated by the Kissinger, Kissinger-Akahira-Sunose, Flynn-Wall-Ozawa, and Coats-Redfern methods. For untreated and treated olive waste, the Kissinger-Akahira-Sunose and Flynn-Wall-Ozawa methods revealed the similar kinetic characteristics for the conversion degree from 0.1 to 0.9, and the average values of activation energy were 201.42 kJ/mol and 162.97 kJ/mol, respectively. The change in activation energy was clearly dependent on the extent of conversion. The Coats-Redfern method suggested the second-order model (F 2 , f(α) = (1 -α) 2 ) could be used to better describe the thermal decomposition mechanism of untreated and treated olive waste. Besides, thermodynamic characteristics of olive waste treated were consistent with that of the untreated sample.

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Pyrolysis of pellets made with biomass and glycerol: Kinetic analysis and evolved gas analysis

Cited by 48 publications

References 28 publications

Pyrolysis Kinetics of the Arid Land Biomass Halophyte Salicornia Bigelovii and Phoenix Dactylifera Using Thermogravimetric Analysis

Pyrolysis Kinetics of the Arid Land Biomass Halophyte Salicornia Bigelovii and Phoenix Dactylifera Using Thermogravimetric Analysis

Kinetic Analysis of Digestate Slow Pyrolysis with the Application of the Master-Plots Method and Independent Parallel Reactions Scheme

Thermal decomposition kinetics of raw and treated olive waste

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