Abstract
ABSTRACT Different classes of solvents such as mineral acids and ionic liquids have proved to be capable of disrupting hydrogen bonds among different polysaccharide chains. Recently, a specific family of proticionic liquids (PILs) has been developed with functionality in various industrial applications, adding to the benefits and advantages of their use, since they are absent of aromatic or halogenated molecular structure, making them structurally free of toxicity. This work aimed to verify the influence of proticionic liquids 2-HDEAS, 2-HEACi, 2-HEAL impregnated in the Prosopis juliflora (mesquite) biomass, through the thermogravimetric analysis of macrocomponents hemicellulose, cellulose and lignin. Tests were performed in a simultaneous thermogravimetric analysis equipment under inert atmosphere, 100 mL/min of nitrogen, and 10 °C/min heating rate. It was verified that all PILs present great potential in the degradation and dissolution of the macrocomponent structure of Prosopis juliflora.
Highlights
IntroductionAccording to the Brazilian Association of Planted Forest Producers (ABRAF, 2017), about 41 million tons of wood residues are annually generated from wood processing and forest harvesting industry, capable of generating energy equivalent to 1.7 GW/year
AND OBJECTIVESAccording to the Brazilian Association of Planted Forest Producers (ABRAF, 2017), about 41 million tons of wood residues are annually generated from wood processing and forest harvesting industry, capable of generating energy equivalent to 1.7 GW/year.Through law project 3.529/2012, as a result of the diversification of the national energy matrix, the Brazilian government instituted the national policy for the generation of electric energy originated from biomass, establishing the mandatory bioenergy contracting in the composition of the national electricity generation
This work aimed to verify the influence of proticionic liquids 2-HDEAS, 2-HEACi, 2-HEAL impregnated in the Prosopis juliflora biomass, through the thermogravimetric analysis of macrocomponents hemicellulose, cellulose and lignin
Summary
According to the Brazilian Association of Planted Forest Producers (ABRAF, 2017), about 41 million tons of wood residues are annually generated from wood processing and forest harvesting industry, capable of generating energy equivalent to 1.7 GW/year. Through law project 3.529/2012, as a result of the diversification of the national energy matrix, the Brazilian government instituted the national policy for the generation of electric energy originated from biomass, establishing the mandatory bioenergy contracting in the composition of the national electricity generation. For some commercially found ILs, there are several aspects considered undesirable for certain applications (Burrell et al, 2010). Such negative aspects include traces of halide impurities from metatheses, toxicological profile in the synthesis of new materials and high cost of ILs in relation to molecular solvents
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