Separation of lignin from corn stover hydrolysate with quantitative recovery of ionic liquid [electronic resource]

• Ngôn ngữ: eng
• Ký hiệu phân loại: 666.6 Earthenware and stoneware
• Thông tin xuất bản: Washington, D.C. : Oak Ridge, Tenn. : United States. Dept. of Energy. Office of Science ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2015
• Mô tả vật lý: Size: p. 606-613 : , digital, PDF file.
• Bộ sưu tập: Metadata
• ID: 263697
• Chủ đề: 1. 09 biomass fuels; 2. 1-butyl-3-methylimidazolium chloride; 3. 37 inorganic, organic, physical, and analytical chemistry; 4. Bagasse; 5. Biorefinery

Tóm tắt

Abundant lignocellulosic biomass could become a source of sugars and lignin, potential feedstocks for the now emergent biorenewable economy. The production and conversion of sugars from biomass have been well-studied, but far less is known about the production of lignin that is amenable to valorization. In this paper, we report the isolation of lignin generated from the hydrolysis of biomass dissolved in the ionic liquid 1-butyl-3-methylimidazolium chloride. We show that lignin can be isolated from the hydrolysate slurry by simple filtration or centrifugation, and that the ionic liquid can be recovered quantitatively by a straightforward wash with water. Finally, the isolated lignin is not only free from ionic liquid but also lacks cellulosic residues and is substantially depolymerized, making it a promising feedstock for valorization by conversion into fuels and chemicals.