Analysis of thermal degradation of banana (Musa balbisiana) trunk biomass waste using iso-conversional models

Kumar, Mohit; Shukla, Sushil Kumar; Upadhyay, S.N.; Mishra, Pradeep Kumar

doi:10.1016/j.biortech.2020.123393

Cited by 75 publications

(25 citation statements)

References 40 publications

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“…The behavior of the differential scanning calorimetry analysis exhibited two endothermic broad peaks related to the energy required for evaporating moisture at 353.15 K and volatile compounds at 443.15 K. Energy release occurred at 573.15 K, which confirmed the degradation of hemicellulose and cellulose, as well as lignin, but partially [37][38][39]. Afterwards, four additional devolatilization sharp peaks were observed at 723.15, 743.15, 763.15, and 823.15 K; these could still be produced by the thermal decomposition of the remaining lignin [39,40].…”

Section: Biomass Characterizationmentioning

confidence: 89%

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Gasification of Psidium guajava L. Waste Using Supercritical Water: Evaluation of Feed Ratio and Moderate Temperatures

et al. 2021

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Biomass waste, as raw material for renewable energy, is an attractive alternative since it does not compete with human food supply. An emerging alternative for its treatment is supercritical water gasification (SCWG), due to the high moisture content of some types of biomass. On this regards, guava fruit (Psidium guajava L.) is one of the most wasted agro-food products in Mexico. This motivated us to evaluate gasification of guava waste on dry biomass base under supercritical water conditions for the first time, with the aim of analyzing the impact of moderate temperatures and feed ratios as reaction parameters on gas products. Temperature was varied in the range of 673.15–773.15 K and using a batch reactor loaded with biomass:water (B:W) mass ratios of 1:1, 1:4, and 1:6. Furthermore, the obtained solid, liquid, and gas phase products were characterized. Hydrogen (H2), carbon dioxide (CO2), carbon monoxide (CO), methane (CH4), ethane (C2H6), propane (C3H8), and butane (C4H10) were identified in gas phase and quantified by means of a gas chromatograph equipped with a TCD detector. Liquid and solid phase products were subjected to Fourier Transform Infrared spectroscopy analyses. This preliminary research indicated that high temperature operation and high biomass:water mass ratio enhanced gas yields (mol/kg) of about 4.137 for CH4, 6.705 for CO2, and 7.743 for H2; whereas the selectivity and gas efficiency for hydrogen was 65.26% and 58.94%, respectively.

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Section: Biomass Characterizationmentioning

confidence: 89%

“…The greater thermal stability on lignin structure was demonstrated compared with cellulose and hemicellulose. Besides, aromatic compounds predominated since the C-C bonds in phenylpropane [36,37].…”

Section: Biomass Characterizationmentioning

confidence: 99%

Gasification of Psidium guajava L. Waste Using Supercritical Water: Evaluation of Feed Ratio and Moderate Temperatures

et al. 2021

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“…This is due to the larger presence of chemically bound water that has higher binding energy [30,43]. It is marked by a sharp DTG peak and an associated endotherm at 135 • C. With more chemically bound water, other biomass feedstock [44,45] has shown an extended pyrolytic drying stage up to 150 • C. The onset and MPT of active pyrolysis shifted to higher temperatures-221 • C and 329 • C, respectively, while the hemicellulose shoulder peak fades. The burnout is at 510 • C. This shift toward higher decomposition temperatures is due to the absence of K-induced catalysis, which is low in SS compared to BP.…”

Section: Thermal Decomposition Pathwaymentioning

confidence: 99%

Biochar Synthesis from Mineral- and Ash-Rich Waste Biomass, Part 1: Investigation of Thermal Decomposition Mechanism during Slow Pyrolysis

et al. 2022

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Synthesizing biochar from mineral- and ash-rich waste biomass (MWB), a by-product of human activities in urban areas, can result in renewable and versatile multi-functional materials, which can also cater to the need of solid waste management. Hybridizing biochar with minerals, silicates, and metals is widely investigated to improve parent functionalities. MWB intrinsically possesses such foreign materials. The pyrolysis of such MWB is kinetically complex and requires detailed investigation. Using TGA-FTIR, this study investigates and compares the kinetics and decomposition mechanism during pyrolysis of three types of MWB: (i) mineral-rich banana peduncle (BP), (ii) ash-rich sewage sludge (SS), and (iii) mineral and ash-rich anaerobic digestate (AD). The results show that the pyrolysis of BP, SS, and AD is exothermic, catalyzed by its mineral content, with heat of pyrolysis 5480, 4066, and 1286 kJ/kg, respectively. The pyrolysis favors char formation kinetics mainly releasing CO2 and H2O. The secondary tar reactions initiate from ≈318 °C (BP), 481 °C (SS), and 376 °C (AD). Moreover, negative apparent activation energies are intrinsic to their kinetics after 313 °C (BP), 448 °C (SS), and 339 °C (AD). The results can support in tailoring and controlling sustainable biochar synthesis from slow pyrolysis of MWB.

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“…Thermodynamic analysis is fundamental in the development of the biomass conversion industry, facilitating the design and optimization of thermochemical conversion processes, and avoiding difficult measurements [22]. Some researches focused on the thermodynamic analyses of pyrolysis and gasification processes of torrefied biomass [23,24].…”

Section: Biomass Thermochemical Conversion Process Kinetic Compensation Effect Referencementioning

confidence: 99%

Investigation of kinetic compensation effect in lignocellulosic biomass torrefaction: Kinetic and thermodynamic analyses

Zhang

Duan

Zhang

et al. 2020

Energy

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The kinetic compensation effect between the activation energy and the pre-exponential factor has extensively existed in the thermochemical conversion processes of lignocellulosic biomass. The research on the kinetic compensation effect in lignocellulosic biomass torrefaction has been insufficient yet. The torrefaction of the pinewood sample was experimentally investigated by thermogravimetric analysis (TGA) at four isothermal temperatures of 220, 250, 265 and 280 °C. The reaction order model was used to analyze the isothermal torrefaction kinetics of lignocellulosic biomass, and the results showed that many sets of activation energy and pre-exponential factor could describe the experimental data at each temperature equally well and they excellently satisfied the kinetic compensation effect relationship. The linear regression lines of the kinetic compensation effect points at different temperatures intersected at one point, whose values corresponded to the obtained optimal kinetic parameters. A kinetic-compensation-effect-based method was developed and verified to determine the kinetic parameters of isothermal biomass torrefaction. Based on the optimal kinetic parameters, the thermodynamic parameters (including Gibbs free energy, enthalpy, and entropy) of biomass torrefaction processes at various temperatures were calculated and analyzed.

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Analysis of thermal degradation of banana (Musa balbisiana) trunk biomass waste using iso-conversional models

Cited by 75 publications

References 40 publications

Gasification of Psidium guajava L. Waste Using Supercritical Water: Evaluation of Feed Ratio and Moderate Temperatures

Gasification of Psidium guajava L. Waste Using Supercritical Water: Evaluation of Feed Ratio and Moderate Temperatures

Biochar Synthesis from Mineral- and Ash-Rich Waste Biomass, Part 1: Investigation of Thermal Decomposition Mechanism during Slow Pyrolysis

Investigation of kinetic compensation effect in lignocellulosic biomass torrefaction: Kinetic and thermodynamic analyses

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