A Study of Impact of Torrefaction on Thermal Behavior of Wheat Straw and Groundnut Stalk Biomass from Punjab, India: Kinetic and Thermodynamic Approach

Gajera, Bhautik; Tyagi, Uplabdhi; Sarma, Anil Kumar; Jha, Mithilesh Kumar

doi:10.2139/ssrn.4085282

Cited by 2 publications

(3 citation statements)

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“…Similar observations for other biomasses were found in the literature [44,45]. For the calculation of MC, VM, FC and Ash, the following Equations were used ( 5)-( 8) [46].…”

Section: Ultimate and Proximate Analysissupporting

confidence: 58%

The Thermochemical Conversion of Municipal Solid Waste by Torrefaction Process

Ivanovski

Goričanec

Urbancl

2023

Thermo

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In this work, the thermochemical properties of municipal solid waste (MSW) are studied using the torrefaction process as the main method for investigation. Torrefaction experiments were carried out using an electric laboratory furnace, at temperatures of 200, 250, and 300 °C. The residence time was set to 90 min. Proximate and ultimate analysis were performed on the torrefied MSW samples and compared with the properties of the raw MSW samples. In addition, the thermal properties of the obtained torrefied MSW samples were evaluated by thermogravimetric analysis (TGA) and derivative thermogravimetric analysis (DTG). The following could be stated: the obtained results showed that mass and energy yields (MY and EY, respectively) decrease with increasing when torrefaction temperature, while the heating values (HHV) increased under the same conditions (from 24.3 to 25.1 MJ/kg). Elemental analysis showed an increase in carbon content (C), from 45.7 ± 0.9 to 52.8 ± 1.05 wt.%, and decrease in oxygen content (O), from 45.6 ± 0.9 to 39.5 ± 0.8 wt.%, when torrefaction temperature is increased, which is consistent with the general definition of the torrefaction process. In addition, enhancement factors (EFs) and fuel ratios (FRs) were calculated, which ranged from 1.00 to 1.02 and 0.16 to 0.23, respectively. Some anomalies were observed during the thermal analysis, which are assumed to be related to the composition of the selected MSW. This study therefore shows that torrefaction pretreatment can improve the physicochemical properties of raw MSW to a level comparable to coal, and could contribute to a better understanding of the conversion of MSW into a valuable, solid biofuel.

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“…Similar observations for other biomasses were found in the literature [44,45]. For the calculation of MC, VM, FC and Ash, the following Equations were used ( 5)-( 8) [46].…”

Section: Ultimate and Proximate Analysissupporting

confidence: 58%

The Thermochemical Conversion of Municipal Solid Waste by Torrefaction Process

Ivanovski

Goričanec

Urbancl

2023

Thermo

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“…The basic properties of biomasses, such as proximate and ultimate analyses and calorific values, were determined. The proximate and ultimate analyses of dry samples were performed as described in our previous papers [52,69] and are represented by the equations below (Equations ( 5)-( 8)) [7].…”

Section: Methodsmentioning

confidence: 99%

“…Additionally, in the field of decarbonization, Slovenia has designated a mission of reducing total greenhouse gas emissions by 36% by 2030 [6]. Recently, biomass energy has been recognized as a promising sustainable and carbon-neutral source in the 2 of 18 country that can help to reduce the impact of social and economic outbursts [7,8] and also produce biofuels [9,10].…”

Section: Introductionmentioning

confidence: 99%

Improving Lignocellulosic and Non-Lignocellulosic Biomass Characteristics through Torrefaction Process

et al. 2022

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In this study, three locally available biomasses, namely miscanthus, hops, sewage sludge, and additionally, their mixtures, were subjected to the torrefaction process to improve their fuel properties. The torrefaction process was conducted at 250–350 °C and 10–60 min in a nitrogen (N2) environment. The torrefaction temperature and time were studied to evaluate the selected biomass materials; furthermore, heating values, mass and energy yields, enhancement factors, torrefaction severity indexes (TSI), and energy-mass co-benefit indexes (EMCI) were calculated. In addition, thermogravimetric (TGA) and Fourier transform infrared analyses (FTIR) were performed to characterize raw and torrefied biomass under the most stringent conditions (350 °C and 60 min). The results showed that with increasing torrefaction temperature and duration, mass and energy yields decreased, and heating values (HHVs) increased for all studied biomasses. The results of the TSI and EMCI indexes showed that the optimum torrefaction conditions were as follows: 260 °C and 10 min for pure miscanthus and hops, whilst this could not be confirmed for the sewage sludge. Furthermore, the combination of sewage sludge and the above-mentioned types of lignocellulosic biomass exhibited better fuel properties than sewage sludge alone.

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A Study of Impact of Torrefaction on Thermal Behavior of Wheat Straw and Groundnut Stalk Biomass from Punjab, India: Kinetic and Thermodynamic Approach

Cited by 2 publications

References 0 publications

The Thermochemical Conversion of Municipal Solid Waste by Torrefaction Process

The Thermochemical Conversion of Municipal Solid Waste by Torrefaction Process

Improving Lignocellulosic and Non-Lignocellulosic Biomass Characteristics through Torrefaction Process

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