Canadian Patents Database / Patent 2823243 Summary

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(12) Patent: (11) CA 2823243
(54) English Title: METHODS OF PROCESSING BIOMASS COMPRISING ELECTRON-BEAM RADIATION
(54) French Title: METHODE DE TRAITEMENT D'UNE BIOMASSE INCLUANT UN RAYONNEMENT PAR FAISCEAU ELECTRONIQUE
(51) International Patent Classification (IPC):
  • C07D 307/50 (2006.01)
  • C10L 1/02 (2006.01)
  • C10L 1/04 (2006.01)
  • C10L 3/00 (2006.01)
  • C12P 5/00 (2006.01)
  • C12P 7/02 (2006.01)
  • C12P 7/40 (2006.01)
  • C12P 17/04 (2006.01)
  • C12P 19/00 (2006.01)
  • D21C 1/00 (2006.01)
(72) Inventors (Country):
  • MEDOFF, MARSHALL (United States of America)
(73) Owners (Country):
  • XYLECO, INC. (United States of America)
(71) Applicants (Country):
  • XYLECO, INC. (United States of America)
(74) Agent: SMART & BIGGAR
(45) Issued: 2014-06-03
(22) Filed Date: 2007-10-26
(41) Open to Public Inspection: 2008-06-19
Examination requested: 2013-08-07
(30) Availability of licence: N/A
(30) Language of filing: English

(30) Application Priority Data:
Application No. Country Date
60/854,519 United States of America 2006-10-26
60/863,290 United States of America 2006-10-27
60/859,911 United States of America 2006-11-17
60/875,144 United States of America 2006-12-15
60/881,891 United States of America 2007-01-23

English Abstract

This invention relates to a method comprising converting a low molecule weight sugar, produced by saccharifying a biomass material to furfural. This invention also relates to a method comprising converting glucose, produced by saccharifying a biomass material, to a fuel, and converting xylose produced by saccharifying the biomass material to a co-product. The biomass is treated to reduce the recalcitrance of the biomass prior to saccharifying by sonication, radiation, oxidation, pyrolysis, steam explosion or combinations thereof. The saccharifying comprises treating the biomass with an enzyme or organism.


French Abstract

La présente invention concerne une méthode qui consiste à convertir un sucre de poids moléculaire bas produit en saccharifiant un matériau de biomasse en furfural. L'invention concerne aussi une méthode qui consiste à convertir du glucose, produit en saccharifiant un matériau de biomasse, en combustible et à convertir du xylose, produit en saccharifiant un matériau de biomasse, en coproduit. La biomasse est traitée pour diminuer la récalcitrance de la biomasse avant la saccharification par la sonification, la radiation, l'oxydation, la pyrolyse, le vapocraquage ou une combinaison de ces procédés. La saccharification consiste à traiter la biomasse avec un enzyme ou un organisme.


Note: Claims are shown in the official language in which they were submitted.


CLAIMS:

1. A method comprising:
producing a low molecular weight sugar by the saccharification of a reduced
recalcitrance biomass material, wherein the recalcitrance of the biomass
material has been
reduced by electron beam irradiation; and
converting the low molecular weight sugar to furfural.
2. The method of claim 1, wherein in addition to electron beam irradiation,
the
recalcitrance of the biomass material is reduced prior to saccharifying by a
method selected
from the group consisting of sonication, oxidation, pyrolysis, steam explosion
and
combinations thereof.
3. The method of claim 1 or 2 wherein irradiating comprises applying to the

biomass material a dose rate of about 1 Mrad/s to about 10Mrad/s.
4. The method of claim 1 or 2 wherein irradiating comprises applying to the

biomass material a total dose of between about 10 Mrad and 150 Mrad.
5. The method of any one of claims 1 to 4 wherein the biomass material
comprises at least one of a cellulosic or lignocellulosic material.
6. The method of claim 5 wherein the lignocellulosic material is selected
from the
group consisting of paper, paper products, paper waste, wood, particle board,
sawdust,
agricultural waste, sewage, silage, grasses, rice hulls, bagasse, jute, hemp,
flax, bamboo, sisal,
abaca, wheat straw, corn cobs, corn stover, switchgrass, alfalfa, hay, coconut
hair, cotton,
seaweed, algae, and mixtures thereof.
7. The method of any one of claims 1 to 6 wherein the sugar is selected
from the
group consisting of glucose, xylose, arabinose, mannose, galactose, and
mixtures thereof.
8. The method of any one of claims 1 to 6 wherein the sugar is xylose.

130


9. The method of any one of claims 1 to 8 wherein saccharifying comprises
contacting the biomass material with an enzyme or microorganism.
10. The method of claim 9 wherein the enzyme comprises a cellulase.
11. The method of any one of claims 1 to 10 further comprising treating the
sugar
with heat and/or a chemical.
12. The method of claim 11 wherein the chemical is selected from the group
consisting of an acid, a base and a strong oxidizer.
13. The method of claim 11 wherein the chemical is an acid.
14. A method comprising,
producing glucose and xylose by the saccharification of a reduced
recalcitrance
biomass material; and
converting glucose to a fuel and converting xylose to a co-product,
wherein the recalcitrance of the biomass material has been reduced by electron

beam irradiation, and wherein saccharifying comprises treating the biomass
material with an
enzyme or organism.
15. The method of claim 14, wherein in addition to electron beam
irradiation, the
recalcitrance of the biomass material is reduced prior to saccharifying by a
method selected
from the group consisting of sonication, oxidation, pyrolysis, steam explosion
and
combinations thereof
16. The method of claim 14 or 15 wherein the co-product is furfural.
17. The method of any one of claims 14 to 16 wherein the fuel is selected
from
alcohols, organic acids, sugars, hydrocarbons and mixtures thereof.

131


18. The method of claims 5 or 6, further comprising treating the
lignocellulosic
material with a chemical.
19. The method of claim 18 wherein the chemical is a base, a mineral acid,
or a
base and a mineral acid.
20. The method of claim 19 wherein the lignocellulosic material is treated
with a
base selected from the group consisting of sodium hydroxide, potassium
hydroxide, lithium
hydroxide and ammonium hydroxide.
21. The method of claim 20 wherein the lignocellulosic material is treated
with
potassium hydroxide.
22. The method of claim 19 wherein the lignocellulosic material is treated
with a
mineral acid selected from the group consisting of sulfuric acid, hydrochloric
acid and
phosphoric acid.
23. The method of claim 22 wherein the lignocellulosic material is treated
with
sulfuric acid.

132


A single figure which represents the drawing illustrating the invention.

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Admin Status

Title Date
(22) Filed 2007-10-26
(41) Open to Public Inspection 2008-06-19
Examination Requested 2013-08-07
(45) Issued 2014-06-03

Maintenance Fee

Description Date Amount
Last Payment 2017-10-23 $250.00
Next Payment if small entity fee 2018-10-26 $125.00
Next Payment if standard fee 2018-10-26 $250.00

Note : If the full payment has not been received on or before the date indicated, a further fee may be required which may be one of the following

  • the reinstatement fee set out in Item 7 of Schedule II of the Patent Rules;
  • the late payment fee set out in Item 22.1 of Schedule II of the Patent Rules; or
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Payment History

Fee Type Anniversary Year Due Date Amount Paid Paid Date
Request for Examination $800.00 2013-08-07
Registration of Documents $100.00 2013-08-07
Filing $400.00 2013-08-07
Maintenance Fee - Application - New Act 2 2009-10-26 $100.00 2013-08-07
Maintenance Fee - Application - New Act 3 2010-10-26 $100.00 2013-08-07
Maintenance Fee - Application - New Act 4 2011-10-26 $100.00 2013-08-07
Maintenance Fee - Application - New Act 5 2012-10-26 $200.00 2013-08-07
Maintenance Fee - Application - New Act 6 2013-10-28 $200.00 2013-08-07
Filing an Amendment after allowance $400.00 2014-02-07
Final $708.00 2014-03-18
Maintenance Fee - Patent - New Act 7 2014-10-27 $200.00 2014-10-20
Maintenance Fee - Patent - New Act 8 2015-10-26 $200.00 2015-10-19
Maintenance Fee - Patent - New Act 9 2016-10-26 $200.00 2016-10-24
Maintenance Fee - Patent - New Act 10 2017-10-26 $250.00 2017-10-23

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Abstract 2013-08-07 1 19
Description 2013-08-07 130 6,899
Claims 2013-08-07 3 85
Drawings 2013-08-07 35 1,222
Representative Drawing 2013-09-04 1 5
Cover Page 2013-09-06 1 41
Drawings 2013-11-22 35 1,920
Claims 2013-11-22 3 91
Description 2013-11-22 130 6,893
Drawings 2014-02-07 35 1,919
Description 2014-02-07 130 6,892
Representative Drawing 2014-05-15 1 8
Cover Page 2014-05-15 1 43
Correspondence 2013-08-22 1 41
Prosecution-Amendment 2013-09-06 1 20
Correspondence 2013-09-11 3 191
Prosecution-Amendment 2013-10-04 2 95
Prosecution-Amendment 2013-11-22 48 2,445
Prosecution-Amendment 2014-02-07 6 188
Prosecution-Amendment 2014-02-28 1 16
Correspondence 2014-03-18 2 76