A membrane separation process using a highly fluorinated polymer membrane that selectively permeates water of an aqueous ionic liquid solution to provide dry ionic liquid. Preferably the polymer is a polymer that includes polymerized perfluoro-2,2-dimethyl-1,3-dioxole (PDD). The process is also capable of removing small molecular compounds such as organic solvents that can be present in the solution. This membrane separation process is suitable for drying the aqueous ionic liquid byproduct from precipitating solutions of biomass dissolved in ionic liquid, and is thus instrumental to providing usable lignocellulosic products for energy consumption and other industrial uses in an environmentally benign manner.
US20150259571A1
申请人:——
公开号:US20150259571A1
公开(公告)日:2015-09-17
PRETREATMENT AND FRACTIONATION OF LIGNOCELLULOSIC BIOMASS
申请人:SUGANIT SYSTEMS, INC.
公开号:US20160017540A1
公开(公告)日:2016-01-21
Method and apparatus for enhanced production of sugars and lignin via fractionation of lignocellulosic biomass through ionic liquid pretreatment and mild alkaline treatment. The resulting biomass is easily fractionated and amenable to efficient and rapid enzymatic hydrolysis or acid hydrolysis and catalytic conversion to valuable products with high recovery of the enzymes used in the hydrolysis.