US 11,965,220 B2
Methods for treating lignocellulosic materials
Robert Jansen, Collinsville, IL (US); Philip Travisano, Danville, VA (US); Lee Madsen, Manassas, VA (US); Neta Matis, Hod Hasharon (IL); James Alan Lawson, Ellsworth, ME (US); Noa Lapidot, Mevaseret Zion (IL); Aharon Eyal, Jerusalem (IL); Timothy Allen Bauer, Belleville, IL (US); Ziv-Vladimir Belman, Kiryat-Yam (IL); Bassem Hallac, Jerusalem (IL); and Michael Zviely, Haifa (IL)
Assigned to VIRDIA, LLC, Alpharetta, GA (US)
Filed by Virdia, LLC, Danville, VA (US)
Filed on Jun. 4, 2021, as Appl. No. 17/339,883.
Application 17/339,883 is a continuation of application No. 15/624,952, filed on Jun. 16, 2017, granted, now 11,053,558.
Application 15/624,952 is a continuation of application No. 14/537,530, filed on Nov. 10, 2014, granted, now 9,783,861, issued on Oct. 10, 2017.
Application 14/537,530 is a continuation of application No. 14/398,444, granted, now 9,493,851, issued on Nov. 15, 2016, previously published as PCT/US2013/039585, filed on May 3, 2013.
Claims priority of provisional application 61/786,169, filed on Mar. 14, 2013.
Claims priority of provisional application 61/785,891, filed on Mar. 14, 2013.
Claims priority of provisional application 61/720,325, filed on Oct. 30, 2012.
Claims priority of provisional application 61/720,313, filed on Oct. 30, 2012.
Claims priority of provisional application 61/715,703, filed on Oct. 18, 2012.
Claims priority of provisional application 61/693,637, filed on Aug. 27, 2012.
Claims priority of provisional application 61/681,299, filed on Aug. 9, 2012.
Claims priority of provisional application 61/680,661, filed on Aug. 7, 2012.
Claims priority of provisional application 61/680,183, filed on Aug. 6, 2012.
Claims priority of provisional application 61/680,181, filed on Aug. 6, 2012.
Claims priority of provisional application 61/672,719, filed on Jul. 17, 2012.
Claims priority of provisional application 61/662,830, filed on Jun. 21, 2012.
Claims priority of provisional application 61/642,338, filed on May 3, 2012.
Prior Publication US 2021/0292858 A1, Sep. 23, 2021
Int. Cl. C13K 13/00 (2006.01); B01D 15/18 (2006.01); B01D 15/36 (2006.01); B01J 39/26 (2006.01); C07G 1/00 (2011.01); C08B 37/00 (2006.01); C08H 7/00 (2011.01); C08H 8/00 (2010.01); C13K 1/00 (2006.01); C13K 1/02 (2006.01); C13K 11/00 (2006.01); D21C 11/00 (2006.01)
CPC C13K 13/002 (2013.01) [B01D 15/1821 (2013.01); B01D 15/1828 (2013.01); B01D 15/362 (2013.01); B01J 39/26 (2013.01); C07G 1/00 (2013.01); C08B 37/0057 (2013.01); C08H 6/00 (2013.01); C08H 8/00 (2013.01); C13K 1/00 (2013.01); C13K 1/02 (2013.01); C13K 11/00 (2013.01); C13K 13/00 (2013.01); C13K 13/007 (2013.01); D21C 11/0042 (2013.01); D21C 11/005 (2013.01); B01D 2215/023 (2013.01)] 31 Claims
OG exemplary drawing
 
1. A method of separating xylose from a biomass-derived sugar stream, the method comprising:
removing an acid from the biomass-derived sugar stream to form an acid-depleted sugar stream comprising less than 0.5% acid by weight;
fractionating the acid-depleted sugar stream using a chromatographic separation system comprising a weak base anion (WBA) exchange resin; and
collecting a fraction containing xylose in a ratio to total dissolved sugars (DS)>0.40 weight/weight.