Treatment and characterization of biomass of soybean and rice hulls using ionic liquids for the liberation of fermentable sugars
Document title: Treatment and characterization of biomass of soybean and rice hulls using ionic liquids for the liberation of fermentable sugars
Journal: Anais da Academia Brasileira de Ciencias
Database: PERIÓDICA
System number: 000435950
ISSN: 0001-3765
Authors: 1
1
2
3
1
Institutions: 1Universidade Federal do Rio Grande do Sul, Laboratorio de Tecnologia de Bioprocessos, Porto Alegre, Rio Grande do Sul. Brasil
2Universidade Federal do Rio Grande do Sul, Instituto de Quimica, Porto Alegre, Rio Grande do Sul. Brasil
3Universidade Federal do Rio Grande do Sul, Laboratorio de Catalise Molecular, Porto Alegre, Rio Grande do Sul. Brasil
Year:
Volumen: 92
Number: 3
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Experimental, aplicado
English abstract We investigated the changes in the physical structure of cellulose recovered from soybean and rice hulls treated with the ionic liquids 1-butyl-3-methylimidazolium chloride ([bmim][Cl]) and 1-butyl-3-methylimidazolium acetate ([bmim][Ac]). The characterization was carried out by a combination of thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and scanning electron microscopy (SEM). Regenerated cellulose from soybean hull showed loss of crystallinity and high structural disruption caused by both ionic liquid treatments as compared to the untreated material. In contrast, rice hull presented only a small structural disruption when treated with [bmim][Ac] and was practically unaffected by [bmim][Cl], showing that this biomass residue is recalcitrance towards physico-chemical treatments, possibly as a consequence of its high composition content in silica. These results suggest the use of soybean hull as a substrate to be treated with ionic liquids in the preparation of lignocellulosic hydrolysates to be used in second-generation ethanol production, whereas other methods should be considered to treat rice hull biomass
Disciplines: Química
Keyword: Ingeniería química,
Residuos agrícolas,
Pretratamiento,
Biomasa,
Cloruro de 1-butil-3-metilimidazolio,
Acetato de 1-butil-3-metilimidazolio,
Celulosa regenerada,
Análisis estructural
Keyword: Chemical engineering,
Agricultural wastes,
Pretreatment,
Biomass,
1-butyl-3-methylimidazolium chloride,
1-butyl-3-methylimidazolium acetate,
Regenerated cellulose,
Structural analysis
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