Pyrolysis of acai seed biomass: Kinetics and thermodynamic parameters using thermogravimetric analysis

Santos, Vanuza O.; Queiroz, Leandro S.; Araujo, Rayanne O.; Ribeiro, Flaviana C. P.; Guimarães, Mariana N.; Costa, Carlos Emmerson Ferreira da; Chaar, Jamal S.; Souza, Luiz K.C. de

doi:10.1016/j.biteb.2020.100553

Cited by 51 publications

(41 citation statements)

References 39 publications

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“…A total of 5–10 mg of the samples were placed in an alumina crucible and heated from 30 to 800 °C, at heating rates of 10 °C/min. Nitrogen was used as an inert gas with a flow rate of 50 mL/min [ 47 , 48 ].…”

Section: Methodsmentioning

confidence: 99%

Valorization of Rice Straw via Hydrotropic Lignin Extraction and Its Characterization

Yin

Wang

et al. 2021

Molecules

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Rice straw hydrotropic lignin was extracted from p-Toluene sulfonic acid (p-TsOH) fractionation with a different combined delignification factor (CDF). Hydrotropic lignin characterization was systematically investigated, and alkaline lignin was also studied for the contrast. Results showed that the hydrotropic rice straw lignin particle was in nanometer scopes. Compared with alkaline lignin, the hydrotropic lignin had greater molecular weight. NMR analysis showed that β-aryl ether linkage was well preserved at low severities, and the unsaturation in the side chain of hydrotropic lignin was high. H units and G units were preferentially degraded and subsequently condensed at high severity. High severity also resulted in the cleavage of part β-aryl ether linkage. 31P-NMR showed the decrease in aliphatic hydroxyl groups and the increasing carboxyl group content at high severity. The maximum weight loss temperature of the hydrotropic lignin was in the range of 330–350 °C, higher than the alkaline lignin, and the glass conversion temperature (Tg) of the hydrotropic lignin was in the range of 107–125 °C, lower than that of the alkaline lignin. The hydrotropic lignin has high β-aryl ether linkage content, high activity, nanoscale particle size, and low Tg, which is beneficial for its further valorization.

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Section: Methodsmentioning

confidence: 99%

Valorization of Rice Straw via Hydrotropic Lignin Extraction and Its Characterization

Yin

Wang

et al. 2021

Molecules

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“…Due to its rigid and stable structure, this polymer needs higher temperatures to degrade than cellulose (V. O. Santos et al, 2020); 3 th stage for extracted cellulose occurs at 220 °C, related to the degradation of longchain cellulose. Cellulose extracted from different biomass (brown algae, sunflower oil cake, and cotton) also showed a similar peak of degradation (Bessa et al, 2021;Kassab et al, 2019;Maache, Bezazi, Amroune, Scarpa, & Dufresne, 2017;Tarchoun, Trache, & Klapötke, 2019) (see Table 4).…”

Section: Thermogravimetric Analysis (Tga)mentioning

confidence: 99%

“…In 2018, the fruit production reached 221 thousand tons (V. O. Santos et al, 2020), where approximately 180 thousand tons of açaí pulp are consumed annually in Pará state (Buratto, Cocero, & Martín, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…The açaí seed has already been characterized in some studies, being mainly composed of cellulose (32 -45%), hemicellulose (19 -25%), and lignin (14 -26%); although depending on the region, these levels may vary considerably (Nagata et al, 2020;Santos et al, 2020). Therefore, it has a high potential for adding value through the production of cellulose.…”

Section: Introductionmentioning

confidence: 99%

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Sementes de açaí (Euterpe precatoria Mart.) como uma nova fonte alternativa de celulose: Extração e caracterização

Barros¹,

Oliveira²,

Pessoa³

et al. 2021

RSD

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O açaí (Euterpe precatoria Mart.) é uma planta amplamente cultivada na região norte do Brasil. Seus frutos vêm ganhando destaque mundial devido aos inúmeros benefícios para a saúde humana. Consequentemente, a produção de celulose aumentou consideravelmente nos últimos anos, gerando uma quantidade significativa de resíduos (principalmente sementes). Como esses resíduos não têm uma destinação adequada, eles são descartados no meio ambiente ou incinerados, causando inúmeros impactos ambientais. Com o objetivo de apresentar alternativas de aplicação desses resíduos, este trabalho teve como objetivo avaliar o conteúdo lignocelulósico das sementes de açaí - extratos, cinzas, lignina, celulose (α-celulose e hemicelulose) - além de extrair e caracterizar a celulose obtida desse abundante resíduo. As sementes e a celulose extraída foram caracterizadas por diversas técnicas: fluorescência de raios X (XRF), difração de raios X (XRD), refletância total atenuada com espectroscopia de infravermelho por transformada de Fourier (ATR / FTIR) e termogravimetria (TGA). Neste estudo, foi confirmado o alto potencial do uso da semente de açaí como fonte alternativa de celulose, uma vez que apresenta 45,5% desse polímero e todas as técnicas de caracterização mostram a pureza da celulose extraída (tipo I).

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“…Flynn-Wall-Ozawa (FWO) and Kissinger-Akahira-Sunose (KAS) isoconversional models were employed to investigate the thermodynamic and kinetic parameters of acai seed. A high heating value of 21.1 MJ/kg suggested the suitability of acai seed as a promising alternate feedstock for biofuel production [8]. The average activation energy of SS seed pyrolysis was estimated using different isoconversional kinetic models [9].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of kinetic and thermodynamic parameters of Argemone mexicana seed pyrolysis via thermogravimetric analyser

Pandey

Sahoo

2021

Biomass Conv. Bioref.

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The pyrolysis kinetics of Argemone mexicana seed, an extensively found naturalized weed in agricultural fields, was studied via thermogravimetric analysis under N 2 atmosphere at heating rates of 10 °C/min, 20 °C/min and 30 °C/min. Five kinetic approaches, viz. Kissinger-Akahira-Sunose (KAS), Ozawa-Flynn-Wall (OFW), Friedman (FRM), Starink (STR) and Vyazovkin (VYZ) methods, and a model-fitting approach (Kennedy and Clarke method) were employed on thermogravimetric information of Argemone mexicana seed to evaluate the kinetic parameters such as activation energy, pre-exponential factor and thermodynamic parameters. Activation energies procured from KAS, OFW, FRM, STR and VYZ methods were 174, 185.08, 212.86, 175.11 and 174.36 kJ/mol, respectively. Furthermore, an appropriate reaction mechanism was identified by the master plot method. The average pre-exponential factor obtained through the Kissinger approach was 8.23E + 22, 1.68E + 22 and 8.05E + 21 s −1 at three different heating rates. The average values of thermodynamic parameters (ΔH, ΔG and ΔS) were 169.28 kJ/mol, 212.64 kJ/mol and − 70.95 J/mol at a lower heating rate of 10 °C/min. Experimental results reveal that kinetic parameters from the five model-free isoconversional methods are in better compliance with similar biomass materials, and Argemone mexicana seed can prove to be a promising alternating source for biofuel production. KeywordsLignocellulosic biomass • Argemone mexicana non-edible oilseed • Non-isothermal pyrolysis kinetics • Reaction mechanism • Thermodynamic analysis Highlights • First study concerning the pyrolysis kinetics of Argemone mexicana non-edible oilseed • Utilization of KAS, OFW, FRM, STR and VYZ model-free methods and KC model-fitting method • Suitability of biomass feedstock for bioenergy production through the pyrolysis process * Sachin Kumar

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Pyrolysis of acai seed biomass: Kinetics and thermodynamic parameters using thermogravimetric analysis

Cited by 51 publications

References 39 publications

Valorization of Rice Straw via Hydrotropic Lignin Extraction and Its Characterization

Valorization of Rice Straw via Hydrotropic Lignin Extraction and Its Characterization

Sementes de açaí (Euterpe precatoria Mart.) como uma nova fonte alternativa de celulose: Extração e caracterização

Evaluation of kinetic and thermodynamic parameters of Argemone mexicana seed pyrolysis via thermogravimetric analyser

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