Microwave pyrolysis of agricultural waste: Influence of catalysts, absorbers, particle size and blending components

Fricler, V.Y.; Nyashina, Galina S.; Vershinina, K. Yu.; Vinogrodskiy, Kirill; Shvets, Anatolii; Стрижак, П. А.

doi:10.1016/j.jaap.2023.105962

Cited by 18 publications

(3 citation statements)

References 53 publications

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“…The subject matter of the conversion of crop residues to various products is not new. In recent research, Fricler et al [11], Karaeva et al [12], and Mo et al [13] carried out the thermochemical conversion of various crop residues to biochar, oil, and gaseous fuels. The experimental, simulation, and environmental evaluation of the process confirm the effectiveness of pyrolysis in converting crop residue to biofuels.…”

Section: Relevant Previous Workmentioning

confidence: 99%

Advanced Thermochemical Conversion Approaches for Green Hydrogen Production from Crop Residues

Awogbemi,

Ojo,

Adeleye

2024

JRM

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The huge volumes of crop residues generated during the production, processing, and consumption of farm products constitute an ecological nuisance when ineffectively managed. The conversion of crop residues to green hydrogen is one of the sustainable management strategies for ubiquitous crop residues. Production of green hydrogen from crop residue sources will contribute to deepening access to clean and affordable energy, mitigating climate change, and ensuring environmental sustainability. However, the deployment of conventional thermochemical technologies for the conversion of crop residues to green hydrogen is costly, requires long residence time, produces low-quality products, and therefore needs to be upgraded. The current review examines the conventional, advanced, and integrated thermochemical conversion technologies for crop residues for green hydrogen production. After a brief overview of the conventional thermochemical techniques, the review delves into the broad narration of advanced thermochemical technologies including catalytic pyrolysis, microwave pyrolysis, co-pyrolysis, hyropyrolysis, and autothermal pyrolysis. The study advocates the deployment of integrated pyrolysis, anaerobic digestion, pyrolysis, and gasification technologies will ensure scalability, decomposition of recalcitrant feedstocks, and generation of high grade green hydrogen. The outlook provides suggestions for future research into cost-saving and sustainable integrated technologies for green hydrogen production towards achieving carbon neutrality and a circular bio-economy.

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Section: Relevant Previous Workmentioning

confidence: 99%

Advanced Thermochemical Conversion Approaches for Green Hydrogen Production from Crop Residues

Awogbemi,

Ojo,

Adeleye

2024

JRM

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“…over other MW absorbers. As Fricler et al 26 investigated the effect of different MW absorbers (bentonite, chalk, eggshell, carbon residue/biochar and charcoal) on the production of syngas from MW pyrolysis of agricultural residues. Results showed that carbon residues or biochar from waste materials provided better quality and maximum syngas at 700 W MW power.…”

Section: Introductionmentioning

confidence: 99%

Unveiling the microwave heating performance of biochar as microwave absorber for microwave-assisted pyrolysis technology

Singh,

Lindenberger,

Chawade

et al. 2024

Sci Rep

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Microwave (MW) heating has gained significant attention in food industries and biomass-to-biofuels through pyrolysis over conventional heating. However, constraints for promoting MW heating related to the use of different MW absorbers are still a major concern that needs to be investigated. The present study was conducted to explore the MW heating performance of biochar as a low-cost MW absorber for performing pyrolysis. Experiments were performed on biochar under different biochar dosing (25 g, 37.5 g, 50 g), MW power (400 W, 700 W, 1000 W), and particle sizes (6 mm, 8 mm, 10 mm). Results showed that MW power and biochar dosing significantly impacted average heating rate (AHR) from 17.5 to 65.4 °C/min at 400 W and 1000 W at 50 g. AHR first increased, and then no significant changes were obtained, from 37.5 to 50 g. AHR was examined by full factorial design, with 94.6% fitting actual data with predicted data. The model suggested that the particle size of biochar influenced less on AHR. Furthermore, microwave absorption efficiency and biochar weight loss were investigated, and microwave absorption efficiency decreased as MW power increased, which means 17.16% of microwave absorption efficiency was achieved at 400 W rather than 700 W and 1000 W. Biochar weight loss estimated by employing mass-balance analysis, 2–10.4% change in biochar weight loss was obtained owing to higher heating rates at higher powers and biochar dosing.

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“…Many studies have been carried out on the co-pyrolysis of different biomasses to produce biofuel and chemicals. However, most of the studies found in the literature focused on the co-pyrolysis of biomass and plastic [16][17][18][19], and very few studies have been carried out on the co-pyrolysis of different biomass materials [10,[20][21][22][23]. Moreover, most of the studies that were carried out on the co-pyrolysis of different biomasses were achieved with the use of the TGA and focused on the gas and char yields.…”

Section: Introductionmentioning

confidence: 99%

Primary Products from Fast Co-Pyrolysis of Palm Kernel Shell and Sawdust

Usino,

Ylitervo,

Richards

2023

Molecules

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Co-pyrolysis is one possible method to handle different biomass leftovers. The success of the implementation depends on several factors, of which the quality of the produced bio-oil is of the highest importance, together with the throughput and constraints of the feedstock. In this study, the fast co-pyrolysis of palm kernel shell (PKS) and woody biomass was conducted in a micro-pyrolyser connected to a Gas Chromatograph–Mass Spectrometer/Flame Ionisation Detector (GC–MS/FID) at 600 °C and 5 s. Different blend ratios were studied to reveal interactions on the primary products formed from the co-pyrolysis, specifically PKS and two woody biomasses. A comparison of the experimental and predicted yields showed that the co-pyrolysis of the binary blends in equal proportions, PKS with mahogany (MAH) or iroko (IRO) sawdust, resulted in a decrease in the relative yield of the phenols by 19%, while HAA was promoted by 43% for the PKS:IRO-1:1 pyrolysis blend, and the saccharides were strongly inhibited for the PKS:MAH-1:1 pyrolysis blend. However, no difference was observed in the yields for the different groups of compounds when the two woody biomasses (MAH:IRO-1:1) were co-pyrolysed. In contrast to the binary blend, the pyrolysis of the ternary blends showed that the yield of the saccharides was promoted to a large extent, while the acids were inhibited for the PKS:MAH:IRO-1:1:1 pyrolysis blend. However, the relative yield of the saccharides was inhibited to a large extent for the PKS:MAH:IRO-1:2:2 pyrolysis blend, while no major difference was observed in the yields across the different groups of compounds when PKS and the woody biomass were blended in equal amounts and pyrolysed (PKS:MAH:IRO-2:1:1). This study showed evidence of a synergistic interaction when co-pyrolysing different biomasses. It also shows that it is possible to enhance the production of a valuable group of compounds with the right biomass composition and blend ratio.

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Microwave pyrolysis of agricultural waste: Influence of catalysts, absorbers, particle size and blending components

Cited by 18 publications

References 53 publications

Advanced Thermochemical Conversion Approaches for Green Hydrogen Production from Crop Residues

Advanced Thermochemical Conversion Approaches for Green Hydrogen Production from Crop Residues

Unveiling the microwave heating performance of biochar as microwave absorber for microwave-assisted pyrolysis technology

Primary Products from Fast Co-Pyrolysis of Palm Kernel Shell and Sawdust

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