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FLOCCULATION OF LIGNOCELLULOSIC HYDROLYZATES

United States Patent Application

*** PATENT GRANTED ***
20150044733
9,751,781
A1
View the Complete Application at the US Patent & Trademark Office
A method of separating a lignin-rich solid phase from a solution, comprising: pretreating a lignocellulosic biomass with a pretreatment fluid having to remove soluble components, colloidal material and primarily lignin containing particles; separating the pretreated lignocellulosic biomass from the pretreatment fluid with soluble components, colloidal material and primarily lignin containing particles; flocculating the separated pretreatment fluid with soluble components, colloidal material and primarily lignin containing particles using PEO or CPAM as a flocculating agent; and filtering the flocculated separated pretreatment fluid with soluble components, colloidal material and primarily lignin containing particles to remove agglomerates.
Yasarla, Lakshmi Rakesh Kumar (Vijayawada, IN), Ramarao, Bandaru V. (Fayetteveille, NY), Amidon, Thomas (Jamesville, NY)
The Research Foundation for The State University of New York (Binghamton NY)
14/ 387,169
March 15, 2013
STATEMENT OF GOVERNMENT SUPPORT [0002] This invention was made with government support under DE-FG36-07G087004 awarded by the U.S. Department of Energy. The government has certain rights in this invention.