Study on the thermal behavior of different date palm residues: Characterization and devolatilization kinetics under inert and oxidative atmospheres

may, Yassine El; Jeguirim, Mejdi; Dorge, Sophie; Trouvé, Gwenaëlle; Saïd, Rachid

doi:10.1016/j.energy.2012.05.022

Cited by 109 publications

(65 citation statements)

References 36 publications

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“…The deviation was more pronounced at high temperatures, probably due to the very low mass in the crucible. Humidity evaporation was observed between ambient temperature and 150 • C, as already mentioned in previous works [19,31].…”

Section: Thermogravimetric and Differential Thermogravimetic (Dtg) Chsupporting

confidence: 61%

“…These temperatures are essential to ensure the perfect design of the combustor and avoid unburned solid fuel at the outlet of the reactor [22]. It should be noted that T i is also used to compare the reactivity of several substances [19][20][21][22][23][42][43][44]. Several methods have been reported and used in the literature to determine T i and T f [32,[45][46][47][48].…”

Section: Ignition and Final Temperatures Of Combustion Reactionmentioning

confidence: 99%

“…The kinetic parameters determined by thermogravimetric measurements are very sensitive to the calculation methods used [19,31]. Therefore, their determination in this study was carried out using the Coats-Redfern method by taking into consideration two different models proposed in the literature [32,33].…”

Section: Kinetic Modellingmentioning

confidence: 99%

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Combustion of Flax Shives, Beech Wood, Pure Woody Pseudo-Components and Their Chars: A Thermal and Kinetic Study

et al. 2018

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Thermogravimetric analysis was employed to investigate the combustion characteristics of flax shives, beech wood, hemicellulose, cellulose, lignin, and their chars. The chars were prepared from raw materials in a fixed-bed reactor at 850 • C. In this study, the thermal behavior based on characteristic temperatures (ignition, maximum, and final temperatures), burnout time and maximum rate was investigated. The kinetic parameters for the combustion of different materials were determined based on the Coats-Redfern approach. The results of our study revealed that the combustion of pure pseudo-components behaved differently from that of biomass. Indeed, principal component analysis showed that the thermal behavior of both biomasses was generally similar to that of pure hemicellulose. However, pure cellulose and lignin showed different behaviors compared to flax shives, beech wood, and hemicellulose. Hemicellulose and cellulose chars had almost the same behaviors, while being different from biomass and lignin chars. Despite the difference between flax shives and beech wood, they showed almost the same thermal characteristics and apparent activation energies. Also, the combustion of the hemicellulose and cellulose chars showed that they have almost the same structure. Their overall thermal and kinetic behavior remained between that of biomass and lignin.

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Section: Thermogravimetric and Differential Thermogravimetic (Dtg) Chsupporting

confidence: 61%

Section: Ignition and Final Temperatures Of Combustion Reactionmentioning

confidence: 99%

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Combustion of Flax Shives, Beech Wood, Pure Woody Pseudo-Components and Their Chars: A Thermal and Kinetic Study

et al. 2018

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“…According to EI May et al (2012), during combustion process the sample burning at lower temperatures and shorter time exhibits higher reactivity. Overall, the combustion characteristics of CP are higher than that of SP from the difference mentioned above.…”

Section: Combustion Characteristicsmentioning

confidence: 99%

Combustion behavior and kinetics of low-lipid microalgae via thermogravimetric analysis

Gai

Liu

Han

et al. 2015

Bioresource Technology

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h i g h l i g h t sCombustion of low-lipid microalgae C. pyrenoidosa and S. platensis were studied. Chemical functional groups present in two microalgae were investigated via FTIR. Apparent activation energies for combustion of the two microalgae were calculated. C. pyrenoidosa has a higher reactivity compared to S. platensis during combustion. a r t i c l e i n f o t r a c tThermogravimetric analysis and differential thermal analysis were employed to investigate combustion characteristics of two low-lipid microalgae, Chlorella pyrenoidosa (CP) and Spirulina platensis (SP) and isoconversional Starink approach was used to calculate the kinetic parameters in the present study. The results showed that three stages of mass loss, including dehydration, devolatilization and char oxidation, were observed during combustion of both of two low-lipid microalgae. The whole weight loss of combustion of two microalgae was both shifted to higher temperature zones with increased heating rates from 10 to 40 K/min. In the 0.1-0.9 conversion range, the apparent activation energy of CP increased first from 51.96 to 79.53 kJ/mol, then decreased to 55.59 kJ/mol. Finally, it slightly increased to 67.27 kJ/mol. In the case of SP, the apparent activation energy gradually increased from 68.51 to 91.06 kJ/mol.

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“…Many studies on the pyrolysis of biomass wastes, such as kinetics and product analysis have been conducted [13]- [15]. However, there is hardly any study about date seeds pyrolysis and combustion characteristics [16], [17]. In this study, the thermal decomposition of pyrolyzed date seeds in an inert atmosphere with a constant flow rate, under non-isothermal conditions and at fixed heating rate of 20°C / min up to 900°C was investigated.…”

Section: Introductionmentioning

confidence: 99%

Pyrolysis Characteristics of Phoenix Dactylifera Date Palm Seeds Using Thermo-Gravimetric Analysis (TGA)

Babiker¹,

Aziz²,

Heikal³

et al. 2013

IJESD

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Abstract-Mass losses of Phoenix dactylifera date palm seeds (DPSs) were measured using a thermo-gravimetric analyzer (TGA). Six-milligram-sample of six varieties of DPSs were pyrolyzed in an inert condition (argon atmosphere) with a constant flow rate of 100 ml/min for the entire range of experiments. The experiments were conducted under non-isothermal conditions and at a heating rate of 20°C/min until the furnace wall temperature reached 900°C. The moisture (M), ash (ASH), volatile matter (VM) and fixed carbon (FC) of the selected date seeds were determined by means of proximate analysis. The weight percentages of carbon (C), hydrogen (H), oxygen (O), nitrogen (N), sulfur (S) and atomic ratios (H/C and O/C) were determined through the ultimate analysis. The heating value, bulk and particle density of DPSs were also measured using a bomb calorimeter and ultra-pycnometer, respectively. The yield of the liquids was obtained by subtracting the total gaseous mass from the DTG data. The experiments demonstrated that there were significant differences in physiochemical properties of selected DPSs. The findings also revealed that DPSs contain much volatile compounds. DPSs energy densities were found to be among the high-quality biological feedstocks.Index Terms-Date palm seeds, pyrolysis, TGA, thermal characteristic.

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Study on the thermal behavior of different date palm residues: Characterization and devolatilization kinetics under inert and oxidative atmospheres

Cited by 109 publications

References 36 publications

Combustion of Flax Shives, Beech Wood, Pure Woody Pseudo-Components and Their Chars: A Thermal and Kinetic Study

Combustion of Flax Shives, Beech Wood, Pure Woody Pseudo-Components and Their Chars: A Thermal and Kinetic Study

Combustion behavior and kinetics of low-lipid microalgae via thermogravimetric analysis

Pyrolysis Characteristics of Phoenix Dactylifera Date Palm Seeds Using Thermo-Gravimetric Analysis (TGA)

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