Effect of torrefaction and fractional condensation on the quality of bio-oil from biomass pyrolysis for fuel applications

Valizadeh, Soheil; Oh, Daejun; Jae, Jungho; Pyo, Sumin; Jang, Hoyeon; Yim, Hyeonji; Rhee, Gwang Hoon; Khan, Moonis Ali; Jeon, Byong‐Hun; Lin, Kun‐Yi Andrew; Show, Pau Loke; Sohn, Jung Min; Park, Young-Kwon

doi:10.1016/j.fuel.2021.122959

Cited by 22 publications

(8 citation statements)

References 64 publications

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“…Furthermore, cost-benefit analyses of the uses of the different fractions need to be carried out, as each of them has many potential uses. P is rich in cellulose and associated compounds, , and could serve as a substrate for pyrolysis, anaerobic digestion for production of biofuel, and raw material for lignocellulose extraction or as a substrate for biogas production .…”

Section: Resultsmentioning

confidence: 99%

Protein Fractionation of Leafy Green Biomass at the Pilot Scale: Partitioning and Type of Nitrogen in the Fractions and Their Usefulness for Food and Feed

Nynäs,

Berndtsson,

Newson

et al. 2024

ACS Food Sci. Technol.

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Fractionation of green biomass often results in fractions with insufficient protein content or quality for food or feed. To understand ways forward, we evaluated the fate of nitrogen (N) and the food or feed suitability of six pilot-scale fractions. The N was present mainly as amino acids (AA) in all fractions (<87%), however, the protein was partly degraded or insoluble in the majority of samples. All protein types and AAs traveled similarly through the fractionation process, giving insignificant separation of RuBisCO versus other proteins, and essential versus nonessential AAs. Water-soluble N compounds were enriched in juice fractions (90−95%), while the protein fractions contained the highest insoluble protein content (13−17%). AA composition in pulp and green juice verified their suitability as feed for ruminants and pigs, respectively. Fractionation of green biomass for food and feed is indeed important, although for sustainable industrial applications, further evaluations are required regarding process feasibility, antinutritional components, and brown juice uses.

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Section: Resultsmentioning

confidence: 99%

Protein Fractionation of Leafy Green Biomass at the Pilot Scale: Partitioning and Type of Nitrogen in the Fractions and Their Usefulness for Food and Feed

Nynäs,

Berndtsson,

Newson

et al. 2024

ACS Food Sci. Technol.

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“…Thus, yield increased from 20.1% for OP-500 up to 33.3% for OP-280-20. Interestingly, its production significantly decreased to 18.3% at the highest residence time, 360 s. This trend was attributed to the decomposition of hemicellulose into carboxylic acids at a low temperature and short residence times [40]. As observed in Figure 2B, acetic acid was mainly produced (which could have come from the thermal decomposition of the acetyl groups linked to the xylose compounds in hemicellulose polysaccharides).…”

Section: Olive Pomace Torrefaction Combined With Fast Pyrolysismentioning

confidence: 87%

Influence of Temperature and Residence Time on Torrefaction Coupled to Fast Pyrolysis for Valorizing Agricultural Waste

2022

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Torrefaction is a promising pretreatment technology for valorizing biomass and upgrading pyrolysis products. This study sets out an original procedure consisting of subjecting the biomass to torrefaction before fast pyrolysis to increased value-added compounds based on agricultural waste biomasses production. This study uses a combined biomass treatment consisting of torrefaction (280–320 °C) and subsequent fast pyrolysis (500 °C) using the same reactor. Under different torrefaction temperatures and residence times, olive pomace (OP) and almond shell (AS) have been evaluated. The study demonstrated OP rather than AS was thermally unstable. The highest total yield of carboxylic acids (mainly acetic acid) was obtained by means of torrefaction at 280 °C with a residence time of 20 s for OP, and at 300 °C and 20 s for AS. Higher torrefaction temperature and residence time promoted phenolic compounds production for OP. However, OP had a higher lignin content and inherent metals that promoted a catalytic reaction during the procedure. The highest yield (47.7%) was obtained using torrefaction at 320 °C with a residence time of 240 s. Overall, the torrefaction of biomass combined with fast pyrolysis constituted a very simple and efficient strategy for valorizing the conversion of agricultural waste biomass into value-added chemicals.

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“…Potnuri [33] blended an adequate amount of KOH into wood chips, and roasting experiments were carried out at 125-175 • C. The results showed that the addition of KOH effectively increased the tar yield (57.1-59.6 wt%) and char yield (27.3-29 wt%) and that KOH acted as a regulator in the roasting process. In a study on the roasting of wood chips, Valizadeh [34] found that acids and phenols dominated the bio-oil at a roasting temperature of 300 • C and that increasing the roasting temperature decreased the yield of phenols in the bio-oil. In roasting experiments on hawthorn seeds, Zhao [35] found that when the roasting temperature was 250 • C, hemicellulose reacted to produce several phenolic compounds, furfural, acids, esters, and other substances.…”

Section: Effect Of Baking Temperature On the Evolution Of Organic Fra...mentioning

confidence: 99%

Release Pattern of Light Aromatic Hydrocarbons during the Biomass Roasting Process

Zhao,

Yan,

Jiang

et al. 2024

Molecules

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Roasting is an important step in the pretreatment of biomass upgrading. Roasting can improve the fuel quality of biomass, reduce the O/C and H/C ratios in the biomass, and provide the biomass with a fuel quality comparable to that of lignite. Therefore, studying the structure and component evolution laws during biomass roasting treatment is important for the rational and efficient utilization of biomass. When the roasting temperature is 200–300 °C, the cellulose and hemicellulose in the biomass undergo a depolymerization reaction, releasing many monocyclic aromatic hydrocarbons with high reactivity. The proportion of monocyclic aromatic hydrocarbons in biomass roasting products can be effectively regulated by controlling the reaction temperature, residence time, catalyst, baking atmosphere, and other factors in the biomass roasting process. This paper focuses on the dissociation law of organic components in the pretreatment process of biomass roasting.

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Effect of torrefaction and fractional condensation on the quality of bio-oil from biomass pyrolysis for fuel applications

Cited by 22 publications

References 64 publications

Protein Fractionation of Leafy Green Biomass at the Pilot Scale: Partitioning and Type of Nitrogen in the Fractions and Their Usefulness for Food and Feed

Protein Fractionation of Leafy Green Biomass at the Pilot Scale: Partitioning and Type of Nitrogen in the Fractions and Their Usefulness for Food and Feed

Influence of Temperature and Residence Time on Torrefaction Coupled to Fast Pyrolysis for Valorizing Agricultural Waste

Release Pattern of Light Aromatic Hydrocarbons during the Biomass Roasting Process

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