Influence of torrefaction as pretreatment on the fast pyrolysis of sugarcane trash

Wu, Nannan; Niu, Qi; Pieters, Jan; Ronsse, Frederik

doi:10.1016/j.enconman.2023.117291

Cited by 10 publications

(4 citation statements)

References 49 publications

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“…According to Figure c, the ATR-FTIR spectrum of the primary pyrolysis char from pure cellulose resembled that of the cellulose feedstock, and the solid residue remained in a powder state with a faint yellow color (Figure b). This was attributed to the slight dehydration of pure cellulose resulting from low-temperature baking in the primary pyrolysis stage . The addition of OA resulted in the formation of the glossy and lamellar pyrolytic carbon, due to vigorous “boiling pyrolysis” (Figure b) .…”

Section: Resultsmentioning

confidence: 99%

“…This was attributed to the slight dehydration of pure cellulose resulting from lowtemperature baking in the primary pyrolysis stage. 33 The addition of OA resulted in the formation of the glossy and lamellar pyrolytic carbon, due to vigorous "boiling pyrolysis" (Figure 1b). 11 Simultaneously, the intensity of the C�O and C−O bond peaks (1716 and 1156 cm −1 ), the characteristic peaks of esterification structures, increased significantly.…”

Section: Performance Of the Oasfp Of Cellulosementioning

confidence: 99%

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Coproduction of 1,4:3,6-Dianhydro-α-d-glucopyranose, Furfural, and Formic Acid through Oxalic Acid-Assisted Staged Fast Pyrolysis of Cellulose

Zhao,

Fu,

Xia

et al. 2024

Energy Fuels

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Pyrolysis is a promising thermochemical conversion technology, which can convert biomass and cellulose into value-added products. Herein, a new approach of oxalic acid-assisted staged fast pyrolysis (OASFP) of cellulose was developed, achieving the coproduction of 1,4:3,6-dianhydro-α-D-glucopyranose (DGP), furfural (FF), and formic acid (FA) in separated pyrolysis stages. The lab-scale tests demonstrated that a selectivity of 71.6% and a yield of 31.5 wt % for FA in the aqueous phase, as well as a selectivity of 55.6% and a yield of 1.2 wt % for FF in the organic phase, were achieved in the primary pyrolysis stage under the optimized conditions (primary pyrolysis temperature of 220 °C and cellulose-to-oxalic acid (OA) ratio of 1:3). During the subsequent secondary pyrolysis process at 400 °C, the decomposition of the solid residue achieved a yield of 7.2 wt % and a selectivity of 32.7% for DGP. The interaction between OA and cellulose during the primary pyrolysis stage was essential for DGP generation. The formation mechanism of major products and the role of OA were revealed based on experiments and density functional theory calculations. In total, the OASFP of cellulose offers new possibilities and opportunities for biomass utilization.

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Section: Resultsmentioning

confidence: 99%

Section: Performance Of the Oasfp Of Cellulosementioning

confidence: 99%

Coproduction of 1,4:3,6-Dianhydro-α-d-glucopyranose, Furfural, and Formic Acid through Oxalic Acid-Assisted Staged Fast Pyrolysis of Cellulose

Zhao,

Fu,

Xia

et al. 2024

Energy Fuels

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“…In pyrolysis processes, torrefaction is useful to reduce the oxygen content and improve the bio-oil quality. It is carried out as a raw material pre-treatment [94].…”

Section: Soft Pyrolysis or Dry Torrefactionmentioning

confidence: 99%

An Overview of Pyrolysis as Waste Treatment to Produce Eco-Energy

Cuevas,

Leiva-Candia,

Dorado

2024

Energies

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The aim of this review is to understand the progress in waste material management through pyrolysis to produce eco-energy. The growing demand for energy, combined with the depletion of traditional fossil fuels and their contribution to environmental problems, has led to the search for waste-to-energy technologies in pursuit of carbon neutrality. While municipal residues are only part of the waste management problem, the impact of discarded plastics on the environment and landfills is significant. Plastics not only take centuries to decompose, but also seriously pollute the oceans. Pyrolysis is a thermochemical process that allows for the thermal decomposition of waste in the absence of oxygen. There are several types of pyrolytic reactors, including batch and continuous ones. Batch reactors are preferred to process polymeric waste, with studies highlighting the importance of optimizing parameters, i.e., type of feedstock, heating rate, and pyrolysis temperature. Moreover, the choice of reactor type can influence the yield and structure of the final compounds. Furthermore, various studies have highlighted the gas heating value obtained through waste pyrolysis and how the composition of the liquid fraction is influenced by the type of polyethylene used. Though scientific interest in pyrolysis is remarkable, as publications have increased in recent years, kinetics studies are scarce. Overall, pyrolysis is a promising technique for managing waste materials to produce energy. Ongoing research and development in this area offer significant potential for improving the sustainability of waste management systems.

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“…Their findings were in accordance with another study by Soria-Vergudo et al [23] based on crushed olive pits under non-isothermal and isothermal conditions. Wu et al [24] studied a two-stage process of the pyrolysis and torrefaction of sugar cane, wherein fast pyrolysis was applied. The process was performed in a tube furnace at temperatures of 220, 260, and 300 • C for a 60 min period.…”

Section: Thermochemical Processmentioning

confidence: 99%

Exploring the Properties of the Torrefaction Process and Its Prospective in Treating Lignocellulosic Material

Ivanovski,

Petrovič,

Goričanec

et al. 2023

Energies

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The main objective of this review is to present the latest research results regarding the importance of the torrefaction process for different biomass materials in the last 12-year period. Despite the fact that the potential of renewable energy sources has been analyzed, research regarding that of energy derived from waste biomass still remains in the infancy state. Torrefaction is known to be one of the most effective methods for enhancing the energy efficiency of biomass. Among different types of torrefactions, the focus in this study is mostly on dry torrefaction. The influential factors, like temperature and residence time, and physico-chemical properties of torrefied products, and the prospective of torrefaction due to its reduced impact on environment, are discussed in-depth. This review provides valuable insights into the torrefaction process, which is conducive to upgrading biomass for achieving net zero carbon emissions, as it has been stated in several works that torrefied biomass can be used instead of coal.

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Influence of torrefaction as pretreatment on the fast pyrolysis of sugarcane trash

Cited by 10 publications

References 49 publications

Coproduction of 1,4:3,6-Dianhydro-α-d-glucopyranose, Furfural, and Formic Acid through Oxalic Acid-Assisted Staged Fast Pyrolysis of Cellulose

Coproduction of 1,4:3,6-Dianhydro-α-d-glucopyranose, Furfural, and Formic Acid through Oxalic Acid-Assisted Staged Fast Pyrolysis of Cellulose

An Overview of Pyrolysis as Waste Treatment to Produce Eco-Energy

Exploring the Properties of the Torrefaction Process and Its Prospective in Treating Lignocellulosic Material

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