Understanding triethylammonium hydrogen sulfate ([TEA][HSO]) pretreatment induced changes in Pennisetum polystachion cell wall matrix and its implications on biofuel yield

Poolakkalody, Najya Jabeen; Ramesh, Kaviraj; Palliprath, Suchithra; Nittoor, Shima Namath; Santiago, Rogelio; Kabekkodu, Shama Prasada; Manisseri, Chithra

doi:10.1016/j.renene.2023.04.008

Cited by 6 publications

(1 citation statement)

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“…In contrast, the protic ILs that formed by proton exchange reaction of Brønsted base and acid precursors, were always much cheaper than the aprotic ILs [ 13 ]. For instance, the synthesis cost of triethylammonium hydrogen sulfate ([TEA][HSO 4 ]), the typical protic IL, was only 1.24 $/kg, which was far lower than the 1-ethyl,3-methylimidazolium acetate ([EMIM][HSO 4 ]) (20–101 $/kg), a kind of aprotic IL that was widely used in biomass fractionation [ 14 ]. Meanwhile, the protic ILs also possess high delignification capability [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Rapid fractionation of corn stover by microwave-assisted protic ionic liquid [TEA][HSO4] for fermentative acetone–butanol–ethanol production

Wang,

Cai,

Jiang

et al. 2024

Biotechnol Biofuels

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Background The use of ionic liquids (ILs) to fractionate lignocelluloses for various bio-based chemicals productions is in the ascendant. On this basis, the protic ILs consisting of triethylammonium hydrogen sulfate ([TEA][HSO4]) possessed great promise due to the low price, low pollution, and high efficiency. In this study, the microwave-assistant [TEA][HSO4] fractionation process was established for corn stover fractionation, so as to facilitate the monomeric sugars production and supported the downstream acetone–butanol–ethanol (ABE) fermentation. Results The assistance of microwave irradiation could obviously shorten the fractionation period of corn stover. Under the optimized condition (190 W for 3 min), high xylan removal (93.17 ± 0.63%) and delignification rate (72.90 ± 0.81%) were realized. The mechanisms for the promotion effect of the microwave to the protic ILs fractionation process were ascribed to the synergistic effect of the IL and microwaves to the depolymerization of lignocellulose through the ionic conduction, which can be clarified by the characterization of the pulps and the isolated lignin specimens. Downstream valorization of the fractionated pulps into ABE productions was also investigated. The [TEA][HSO4] free corn stover hydrolysate was capable of producing 12.58 g L−1 of ABE from overall 38.20 g L−1 of monomeric sugars without detoxification and additional nutrients supplementation. Conclusions The assistance of microwave irradiation could significantly promote the corn stover fractionation by [TEA][HSO4]. Mass balance indicated that 8.1 g of ABE and 16.61 g of technical lignin can be generated from 100 g of raw corn stover based on the novel fractionation strategy.

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Section: Introductionmentioning

confidence: 99%