Development of process-product relations for the pyrolysis of sisal residue

Pereira, Luis Gabriel Gomes; Heeres, Hero Jan; Lima, Sirlene Barbosa; Pires, C. A. M.

doi:10.1016/j.jaap.2022.105583

Cited by 6 publications

(2 citation statements)

References 60 publications

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“…The sisal residue contains high levels of lignin and extractives, resulting in a bio‐oil with an O/C ratio of 0.11 and H/C of 1.48 (Pereira et al., 2022). The value of the O/C ratio of bio‐oil from sisal residue is still very high compared to petroleum, but it is one of the lowest compared to others (0.20–0.95).…”

Section: Introductionmentioning

confidence: 99%

Upgrade of bio‐oil produced from the sisal residue composting

Cunha,

Lima,

Pires

2024

GCB Bioenergy

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The present work studies the composting effects on the chemical characteristics of bio‐oil produced by pyrolysis of sisal residue. Three systems were composted with sisal residue proportions to sisal fiber powder of 100:0, 90:10, and 75:25, respectively. The systems showed reductions of 33%–48% (extractive), 70%–80% (hemicellulose), and 80%–90% (cellulose) after composting. An increase in lignin content was observed in all systems. The pyrolysis of the composted systems was performed at 450°C and 550°C. At both temperatures, this process was selective in producing a large concentration of hydrocarbons (>160% increase), mainly alkanes and alkenes, reducing the concentrations of ketones, aldehydes, and phenolics (>50%) and eliminating esters, furans, and acetic acid to composted biomasses. The higher temperature favored aromatics and cyclic hydrocarbon production from the pyrolysis of composted samples. In addition to these results, composting helped reduce the oxygenated bio‐oil species by approximately 44%–75% at the lowest and ~69% at the highest temperatures. These results indicate that composted sisal residue can produce bio‐oils that are more suitable for biorefineries since they are rich in aliphatic hydrocarbons and non‐oxygenated species.

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Section: Introductionmentioning

confidence: 99%

Upgrade of bio‐oil produced from the sisal residue composting

Cunha,

Lima,

Pires

2024

GCB Bioenergy

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“…Agave residue contains a signi cant amount of lignocellulose, which can be thermally treated in the absence of oxygen in a process called pyrolysis. Pyrolysis can produce multiple products, such as bio-oil, biochar, and syngas [10], [11] [12] . The composition of the phases can be controlled by adjusting some operational parameters, such as nal reactor temperature, residence time, heating rate, carrier gas ow, type of reactor, and the nature of biomass used [13], [14] and [3].…”

Section: Introductionmentioning

confidence: 99%

Valorization of lignocellulosic agave residues via pyrolysis and its use as adsorbent for methylene blue removal

THOMAS,

Cavalcante,

Padilha

et al. 2023

Preprint

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The economic exploitation of sisal (Agave sisalana) fibers leads to the generation of underutilized waste. Therefore, technologies must be developed to mitigate the environmental impacts caused by inadequate waste disposal and ensure more income from sisal exploration. The present study investigated the potential of agave residues in producing biochar with high adsorbent capacity via slow pyrolysis. Hybrid Itaporanga, Hybrid Bahia, and Mutant-1 hybrid agave varieties were used as precursors and methylene blue (MB) dye was used as a solute. In general, agave residues presented similar contents of lignin (12.1-13.2%) and ash (10.3-13.9%), while the greatest differences were recorded in the values of holocellulose (31.4%-42.4%) and extractives (23.2%-33.4%). The increase in temperature favored an increase in the surface area and volume of micropores in the biochar; however, the adsorption capacity of MB dye was reduced. The pseudo-second-order models effectively adjusted the adsorption kinetics. The Hybrid Itaporanga biochar obtained at 400 °C outperformed the other biochar, presenting static (80 mg.g-1) and dynamic (180 mg.g-1) adsorption values. Thus, thermochemical valorization of agave residue is attractive to obtain a cheap and environmentally friendly adsorbent.

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Valorization of lignocellulosic agave residues via pyrolysis and its use as adsorbent for methylene blue removal

Thomas,

Cavalcante,

de Araújo Padilha

et al. 2024

Biomass Conv. Bioref.

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The economic exploitation of sisal (Agave sisalana) fibers leads to the generation of underutilized waste. Therefore, technologies must be developed to mitigate the environmental impacts caused by inadequate waste disposal and ensure more income from sisal exploration. The present study investigated the potential of agave residues in producing biochar with high adsorbent capacity via slow pyrolysis. Hybrid Itaporanga, Hybrid Bahia, and Mutant-1 hybrid agave varieties were used as precursors and methylene blue (MB) dye was used as a solute. In general, agave residues presented similar contents of lignin (12.1-13.2%) and ash (10.3-13.9%), while the greatest differences were recorded in the values of holocellulose (31.4%-42.4%) and extractives (23.2%-33.4%). The increase in temperature favored an increase in the surface area and volume of micropores in the biochar; however, the adsorption capacity of MB dye was reduced. The pseudo-second-order models effectively adjusted the adsorption kinetics. The Hybrid Itaporanga biochar obtained at 400 °C outperformed the other biochar, presenting static (80 mg.g -1 ) and dynamic (180 mg.g -1 ) adsorption values. Thus, thermochemical valorization of agave residue is attractive to obtain a cheap and environmentally friendly adsorbent.

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Development of process-product relations for the pyrolysis of sisal residue

Cited by 6 publications

References 60 publications

Upgrade of bio‐oil produced from the sisal residue composting

Upgrade of bio‐oil produced from the sisal residue composting

Valorization of lignocellulosic agave residues via pyrolysis and its use as adsorbent for methylene blue removal

Valorization of lignocellulosic agave residues via pyrolysis and its use as adsorbent for methylene blue removal

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