Reduction of Cd2+ and Pb2+ Bioavailability in Contaminated Soil Treated with Sisal Residues (Agave sisalana)

Silva, Mateus Guimarães da; Garcia, Kaio Gráculo Vieira; Mattos, Adriano Lincoln Albuquerque; Pérez, Edier Humberto; Martins, Thaís da Silva; Sousa, Luis Felipe Rodrigues de Aquino; Pinto, Antônio Marcos da Costa; Escobar, Maria Eugenia Ortiz

doi:10.1007/s11270-023-06140-y

Cited by 1 publication

(1 citation statement)

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“…Some initiatives to improve the sisal crop are already being taken, mainly by using residues produced in the defibration process, which reach more than 95% w/w of the leaf (da Silva et al., 2023). Most of the waste is discarded in the field as garbage, harming the environment due to the production of greenhouse gases (Broeren et al., 2017).…”

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%