Method for dissolving lignocellulosic biomass
AssigneeUnited Arab Emirates University
InventorsEmmanuel Galiwango, Ali H. Al-Marzouqi, Sabeera Haris
Life of this patent
Estimating the term…
Abstract
A method of dissolving lignocellulosic biomass waste includes obtaining raw lignocellulosic biomass waste, reducing a size of the biomass waste to provide a biomass particle size of less than about 200 μm; using dimethyl sulfoxide (DMSO), sodium hydroxide (NaOH) and trifluoroacetic acid (TFA) solvents to dissolve the biomass particles and achieve a dissolved lignocellulose solution. The present method dissolves at least about 94% of the lignocellulose fraction in the waste biomass. In an embodiment, the biomass particle size can be about 180 μm.
Claims13
A method for dissolving lignocellulosic biomass waste, comprising:
- providing raw lignocellulosic biomass waste;
- reducing a size of the biomass waste to provide a biomass particle size of less than about 200 μm;
- reducing an extractives content of the biomass particles to provide an extractives-free powder;
- adding a polar solvent to the extractives-free powder to provide a biomass waste solution;
- adding a base to the biomass waste solution to provide a semi-dissolved mixture;
- heating the semi-dissolved mixture while stirring;
- cooling the semi-dissolved mixture to room temperature after heating;
- adding acid to the cooled semi-dissolved mixture to provide an acid-treated mixture;
- heating the acid-treated mixture while stirring to provide a dissolved lignocellulose solution;
- electrospinning the dissolved lignocellulose solution to generate polymer nanofibers.
A method for preparing lignocellulosic waste-based polymer nanofibers, comprising:
- providing raw lignocellulosic biomass waste;
- reducing a size of the biomass waste to provide a biomass particle size of less than about 200 μm;
- reducing an extractives content of the biomass particles to provide an extractives-free powder;
- adding a polar solvent to the extractives-free powder to provide a biomass waste solution;
- adding a base to the biomass waste solution to provide a semi-dissolved mixture;
- heating the semi-dissolved mixture while stirring;
- cooling the semi-dissolved mixture to room temperature after heating;
- adding an acid to the cooled semi-dissolved mixture to provide an acid-treated mixture;
- heating the acid-treated mixture while stirring to provide a dissolved lignocellulose solution;
- electrospinning the dissolved lignocellulose solution to generate the polymer nanofibers.
Dependencies are inferred from the claim text.