Pyrolysis of Musa balbisiana flower petal using thermogravimetric studies

Sriram, Aswin; Swaminathan, G.

doi:10.1016/j.biortech.2018.05.043

Cited by 70 publications

(21 citation statements)

References 44 publications

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“…At a conversion rate (α) range of 0.2–0.8 with an interval of 0.05, both the activation energy ( Ea ) and pre-exponential factor ( A ) values were determined using the FWO and DAEM methods from the linear plots of log(β) and versus 1/ T , respectively. The thermodynamic parameters, including the changes in enthalpy (Δ H ), Gibb’s free energy (Δ G ), and entropy (Δ S ) were also calculated (SI). , …”

Section: Materials and Methodsmentioning

confidence: 99%

Novel Insights into the Kinetics, Evolved Gases, and Mechanisms for Biomass (Sugar Cane Residue) Pyrolysis

Song

Zhang

et al. 2019

Environ. Sci. Technol.

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Biomass, a renewable energy source, via available thermo-chemical processes has both engineering and environmental advantages. However, the understanding of the kinetics, evolved gases, and mechanisms for biomass pyrolysis is limited. We first propose a novel temperature response mechanism for the pyrolysis of sugar cane residue using thermogravimetric analysis-Fourier transform infrared spectrometry-mass spectrometry (TG-FTIR-MS) combined with Gaussian model and two-dimensional correlation spectroscopy (2D COS). The existence and contribution of distinct peaks in TG-FTIR spectra were innovatively distinguished and quantified, and the temperature-dependent dynamics of gas amounts were determined using Gaussian deconvolution. The 2D-TG-FTIR/MS-COS results revealed for the first time that the primary sequential temperature responses of gases occurred in the order: H 2 O/CH 4 > phenols/alkanes/aromatics/alcohols > carboxylic acids/ketones > CO 2 /ethers > aldehyde groups/acetaldehyde. Subtle sequential changes even occurred within the same gases during pyrolysis. The quantity dynamics and sequential responses of gases were fitted to the combined effects of the order-based, diffusion, and chemical reaction mechanisms for the component degradation. The combination of TG-FTIR-MS, Gaussian model, and 2D COS is a promising approach for the online monitoring and real-time management of biomass pyrolysis, providing favorable strategies for pyrolysis optimization, byproduct recovery, energy generation, and gas emission control in engineering and environmental applications.

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Section: Materials and Methodsmentioning

confidence: 99%

Novel Insights into the Kinetics, Evolved Gases, and Mechanisms for Biomass (Sugar Cane Residue) Pyrolysis

Song

Zhang

et al. 2019

Environ. Sci. Technol.

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“…The pyrolysis process of biomass is represented by general reactions, , which are shown in the Supporting Information. The integral form, , G (α), for the isoconversional model can be expressed based on the conversion rate and reaction kinetics and rearranging yields (eq ) where G (α) = integral conversion and x = E /( RT ). However, P ( x ) is an integral form of temperature and has no exact solution; and there are only a few numerical approximations.…”

Section: Materials and Methodsmentioning

confidence: 99%

Synergistic Effects on the Co-pyrolysis of Agricultural Wastes and Sewage Sludge at Various Ratios

Chen

Jian

2021

ACS Omega

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This study investigated the co-pyrolysis of blends of sewage sludge (SS) with rice husk (RH) and with hemp straw (HS) at different ratios by using thermogravimetry (TG) and its rate (DTG, derivative TG) analysis at heating rates of 10, 20, and 30 K/min. The resulting kinetic parameters of activation energy (E a ) were calculated by both Flynn−Wall−Ozawa and Kissinger−Akahira−Sunose models, followed by comparison of experimental values with calculated values to reveal the synergistic effects of SS/RH and SS/HS. With increasing additions of RH or HS to SS, a gradual decreasing trend in the experimental pyrolysis temperature range was evident, ranging from 144.5 to 95.2 °C for SS/RH and from 144.5 to 88.8 °C for SS/RH. Moreover, such temperature ranges were 6.7−20.4 °C less than the calculated values at the same blending ratio. The fitting results of the two kinetic models showed that with the same SS mass ratio, the experimental E a * (average activation energy) of both SS/RH and SS/HS were less than the calculated E a *. Especially, the experimental E a * of 7SS−3RH was lower around 43.8% than the calculated E a *, whereas the experimental E a * of 3SS−7HS was lower by about 39.4% than the calculated E a *. Synergistic analysis demonstrated that the co-pyrolysis of RH or HS with SS at various mass ratios presented obvious synergistic effects and then the decrease of E a . The mechanism experiment showed that the co-pyrolysis of SS/HS may promote the decrease of E a by changing the co-pyrolysis gas products or by increasing the overflow of volatile matter and then forming intermediate transition products, while SS/RH may accelerate the decrease of the E a by using an appropriate K addition ratio from RH as a metal catalyst.

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“…The aim of the study was to investigate the pyrolysis decomposition behaviour of banana flower petals and to assess the prospects of using the waste as a source for bioenergy generation The results of the study validated that vegetable waste can serve as a source for bioenergy production [29] 2…”

Section: Flower Petalmentioning

confidence: 99%

“…The above correlation is used since the composition of all elements are well within the allowable limits suggested by the researchers, i.e., C: 0-92%, H: 0.43-25%, N: 0-5.6%, O: 0-50%, Ash: 0-71%, HHV: 4745-55,345 kJ/ kg. The obtained heating values of the vegetable wastes are compared with the heating values of other vegetable wastes (cauliflower [23], lettuce [23], coriander [23], banana flower [29], pea [28], potato peel [22]) (see Fig. 1).…”

Section: Heating Valuementioning

confidence: 99%

Biochar development from thermal TGA studies of individual food waste vegetables and their blended systems

Elkhalifa

Parthasarathy

Mackey

et al. 2022

Biomass Conv. Bioref.

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The amount of food waste that is generated all over the world is enormous. As food wastes are rich in nutrients and organics, they serve as a potential source for the generation of many value-added commodities and energy. In most countries, food wastes are predominately dumped in open lands or incinerated, along with other combustible materials such as municipal solid wastes, for the possible extraction of energy. However, these two modes of food wastes disposal are encountering more and more environmental, technical, and economical challenges. More recently, it has been realized that food wastes can be transformed into energy and value-added products, such as horticultural biochars, using thermochemical technologies such as pyrolysis and gasification. In the current research work, three selected food items, carrots, cucumbers, and tomatoes, have been studied using thermogravimetric analysis. The biochar analysis involves one single food item (carrot), one binary mixture (carrot + cucumber), and one ternary blend of carrot, cucumber, and tomato. Two heating rates were used in order to perform kinetic modeling studies using the Arrhenius and Coats-Redfern models. Since the production of the pyrolysis gases—for energy and chemicals production—is of major economic significance regarding the overall process viability, the TGA syngas for a single component, binary component and tertiary component systems were analyzed by TGA coupled mass spectrometry. The results of the gas analysis indicate an increase in hydrogen generation due to blending the food wastes.

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Pyrolysis of Musa balbisiana flower petal using thermogravimetric studies

Cited by 70 publications

References 44 publications

Novel Insights into the Kinetics, Evolved Gases, and Mechanisms for Biomass (Sugar Cane Residue) Pyrolysis

Novel Insights into the Kinetics, Evolved Gases, and Mechanisms for Biomass (Sugar Cane Residue) Pyrolysis

Synergistic Effects on the Co-pyrolysis of Agricultural Wastes and Sewage Sludge at Various Ratios

Biochar development from thermal TGA studies of individual food waste vegetables and their blended systems

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