Influence of torrefaction on intrinsic bioconstituents of cotton stalk: TG-insights

Gangil, Sandip; Bhargav, Vinod Kumar

doi:10.1016/j.energy.2017.10.128

Cited by 15 publications

(4 citation statements)

References 46 publications

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“…At the 0.1 < α < 0.4 stage, the activation energy range is 122 to 163 KJ/mol; this phase is mainly the hemicellulose pyrolysis stage. Decomposition takes place mainly by dehydration, decarboxylation, and the generation of small gas molecules such as decarburization and condensable volatiles, including breakage of C-O-C and C-C bonds and rupture of small molecule chains (Gangil and Bhargav 2018), which is consistent with thermogravimetric analysis. At the 0.5 to 0.7 stage, the activation energy ranged from 171 to 236 KJ/mol.…”

Section: Activation Energy Of Pnsupporting

confidence: 80%

Kinetic analysis and pyrolysis behavior of pine needles by TG-FTIR and Py-GC/MS

Liang

Zhang

Wang³

et al. 2023

BioRes

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The pyrolysis performances and reaction kinetics of pine needles (PN) were investigated by integrating thermogravimetric analysis, Fourier transform infrared spectroscopy, and pyrolysis-gas chromatography/mass spectrometry. The average activation energy of PN was estimated to be 183.2 kJ/mol by Kissinger Akahira Sunose (KAS) and 183.8 kJ/mol by Flynn Wall Ozawa (FWO), respectively at heating rates of 10, 20, and 40 °C/min. The pyrolysis of PN was found to be more efficient at the lower heating rates, while increased heating rates promoted the reaction. Using the King-Kai (K-K) method, the activation energies of hemicellulose, cellulose, and lignin were calculated to be 156, 165, and 172 kJ/mol, respectively. The descending order of evolving gases and functional groups from PN was found to be CO2, C=C, C=O, H2O, CH4, and CO. The main pyrolytic by-products identified were hydrocarbons, phenols, alcohols, ketones, and aldehydes. The determination of kinetic parameters provides fundamental information for predicting the rates at which chemical reactions occur. This study demonstrates the potential of PN as a suitable source for bioenergy.

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Section: Activation Energy Of Pnsupporting

confidence: 80%

Kinetic analysis and pyrolysis behavior of pine needles by TG-FTIR and Py-GC/MS

Liang

Zhang

Wang³

et al. 2023

BioRes

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“…This fact implies the use of a processing temperature that is high enough to start thermal degradation of lignocellulose. Indeed, lignin starts its degradation at about 250 °C and its corresponding degradation process is prolonged up to temperatures around 450 °C [74]. Moreover, cellulose degrades in the 300–400 °C range and full decomposition takes place from 450 °C [22,75,76].…”

Section: Resultsmentioning

confidence: 99%

“…One can also observe three thermal stages during thermal decomposition of the samples. The first one occurred at 300–375 °C, which is related to thermal degradation of hemicelluloses and the start of cellulose degradation [74]. This step overlapped with the degradation onset of the polyester.…”

Section: Resultsmentioning

confidence: 99%

Development of Sustainable and Cost-Competitive Injection-Molded Pieces of Partially Bio-Based Polyethylene Terephthalate through the Valorization of Cotton Textile Waste

Montava-Jordà

Torres‐Giner

Bou

et al. 2019

IJMS

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This study presents the valorization of cotton waste from the textile industry for the development of sustainable and cost-competitive biopolymer composites. The as-received linter of recycled cotton was first chopped to obtain short fibers, called recycled cotton fibers (RCFs), which were thereafter melt-compounded in a twin-screw extruder with partially bio-based polyethylene terephthalate (bio-PET) and shaped into pieces by injection molding. It was observed that the incorporation of RCF, in the 1–10 wt% range, successfully increased rigidity and hardness of bio-PET. However, particularly at the highest fiber contents, the ductility and toughness of the pieces were considerably impaired due to the poor interfacial adhesion of the fibers to the biopolyester matrix. Interestingly, RCF acted as an effective nucleating agent for the bio-PET crystallization and it also increased thermal resistance. In addition, the overall dimensional stability of the pieces was improved as a function of the fiber loading. Therefore, bio-PET pieces containing 3–5 wt% RCF presented very balanced properties in terms of mechanical strength, toughness, and thermal resistance. The resultant biopolymer composite pieces can be of interest in rigid food packaging and related applications, contributing positively to the optimization of the integrated biorefinery system design and also to the valorization of textile wastes.

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“…Therefore, it is imperative to search for environmentally and sustainable resources and utilize them to their full potential in light of biofuels. Biomass, as a renewable energy source, can be widely viewed as a promising alternative, because of its numerous applications, especially biofuels and bio-fertilizers [2]. There are several bio-refinery platforms that will be capable of processing biomass feed-stocks, which are the key intermediates between biomass feed-stocks and their value-added products.…”

Section: Introductionmentioning

confidence: 99%

Production of Biochar from Oilseed Residue (Deoiled Cakes): State-of-the-Art

Lakshmi Durga,

Pal,

Wahid

2024

From Biomass to Biobased Products

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Even today, the generation of chemicals and energy is still reliant on fossil-based resources in industrialized countries. Biomass could be a valuable renewable energy source that could reduce dependence on fossil fuels as well as provide a significant reduction of carbon dioxide and greenhouse gas emissions. In this scenario, residue from natural oil extraction units is uplifted to produce biofuels as replacement of fossil fuels. In the process of bio-refinery, well established technologies were presented. Those are thermochemical treatment (pyrolysis, liquefaction, gasification, etc.), anaerobic digestion, catalysis, etc. Especially, importance is given to pyrolysis as it is the feasible technique to utilize residue and to produce wealthy products. The role of intrinsic bio-polymers in quantity of final pyrolytic products was discussed. Major process parameters were critically elucidated, however, the investigation of advanced pyrolysis technologies requires further research.

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Influence of torrefaction on intrinsic bioconstituents of cotton stalk: TG-insights

Cited by 15 publications

References 46 publications

Kinetic analysis and pyrolysis behavior of pine needles by TG-FTIR and Py-GC/MS

Kinetic analysis and pyrolysis behavior of pine needles by TG-FTIR and Py-GC/MS

Development of Sustainable and Cost-Competitive Injection-Molded Pieces of Partially Bio-Based Polyethylene Terephthalate through the Valorization of Cotton Textile Waste

Production of Biochar from Oilseed Residue (Deoiled Cakes): State-of-the-Art

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