Formic acid–hydrogen peroxide treatment of furfural residue for production of nanocellulose, lignin, and nano-scale lignin

Abstract

Further utilization of furfural residue, an industrial solid waste, has been a long-termed challenge because of its hostile properties toward the applications, such as strong acidity and high salinity. Herein,...

Lignin Degradation via Chlorine Dioxide at Room Temperature: Chemical Groups and Structural Characterization

“…In the aromatic regions, the C 2,6 –H 2,6 correlation of the S units was distinguished at δ C /δ H 103.8/6.68 ppm; a minor but clear signal at δ C /δ H 110.9/7.01 was related to the C 2 –H 2 correlation of the G units. In addition, a correlated signal of the C 2,6 –H 2,6 correlation from the H units could be detected at δ C /δ H 128.0/7.10 [ 27 ]. The linkage-bond content was obtained by the quantitative calculation of the β-O-4 linkage bond in IL and DIL.…”

Dual Role of Gluconic Acid in the Cascading Saccharification of Hemicellulose and Cellulose from Various Lignocellulosic Stuff

“…19,20 HP together with formic acid and citric acid has also been shown to form a powerful peroxyacid system and has made great contributions to delignification. 21,22 Owing to its monocarboxylic acid structure and acidic properties, GA along with HP (HP-GA) seems to be a promising alternative in lignin removal. Moreover, unlike several extensively reported peroxyacids, the use of HP-GA has not been reported.…”

“…Organic peracid pretreatment is considered to be an effective method for the selective removal of lignin while preserving the carbohydrates in biomass . It has been repeatedly reported that peroxyacetic acid formed from hydrogen peroxide (HP) and acetic acid could be used for the delignification of lignocellulosic biomass to significantly improve the enzymatic digestibility of cellulose. , HP together with formic acid and citric acid has also been shown to form a powerful peroxyacid system and has made great contributions to delignification. , Owing to its monocarboxylic acid structure and acidic properties, GA along with HP (HP-GA) seems to be a promising alternative in lignin removal. Moreover, unlike several extensively reported peroxyacids, the use of HP-GA has not been reported.…”