Processing biomass and petroleum containing materials
Biomass (e.g., plant biomass, animal biomass, and municipal waste biomass) is processed to produce useful products, such as fuels. For example, systems can use feedstock materials, such as cellulosic and/or lignocellulosic materials and/or starchy materials, to produce ethanol and/or butanol, e.g., by fermentation.
1. A method comprising:
exposing a lignocellulosic material to ion beam irradiation, the lignocellulosic material comprising a complex of cellulosic material cross-linked by hemicellulose material, the complex being at last partially embedded within a lignin matrix;
wherein the ion beam irradiation comprises one or more species of negatively charged ions, the one or more species of negatively charged ions selected to preferentially degrade lignin and/or hemicellulose material.
2. The method of claim 1 , wherein the one or more species of negatively charged ions comprises one or more of: oxygen ions, nitrogen ions, carbon ions, silicon ions, phosphorous ions, and hydride ions.
3. The method of claim 1 , wherein the ion beam irradiation comprises a first ion beam and a second ion beam.
4. The method of claim 3 , wherein the first ion beam preferentially degrades lignin, and the second ion beam preferentially degrades hemicellulose.
5. The method of claim 4 , wherein the first ion beam comprises oxygen ions.
6. The method of claim 4 , wherein the second ion beam comprises hydride ions.
7. The method of claim 1 , wherein the cellulosic material remains relatively unaffected by the one or more species of negatively charged ions.
8. The method of claim 1 , the method further comprising contacting the lignocellulosic material and/or the irradiated lignocellulosic material with one or more basic agents in solution, wherein the one or more basic agents separate lignin and/or hemicellulose material from cellulosic material.
9. The method of claim 8 , wherein the one or more basic agents comprises sodium bicarbonate.
10. The method of claim 1 , the method further comprising contacting the lignocellulosic material and/or the irradiated lignocellulosic material with one or more solvents, wherein the one or more solvents solvate or suspend lignin and/or hemicellulose material in solution, and wherein one or more washing stages remove at least some of the solvated or suspended material.
11. The method of claim 1 , wherein the ion beam irradiation further comprises one or more species of positively charged ions, the one or more species of positively charged ions selected to preferentially degrade cellulosic material.
12. The method of claim 11 , wherein the one or more species of positively charged ions comprises one or more of: hydrogen ions, noble gas ions, halogen ions, carbon ions, nitrogen ions, oxygen ions, silicon ions, phosphorus ions, and metal ions.
13. The method of claim 1 , the method further comprising contacting the lignocellulosic material and/or the irradiated lignocellulosic material with one or more acidic agents in solution, wherein the one or more acidic agents at least partially degrade the lignocellulosic material and/or the cellulosic material.
14. The method of claim 1 , wherein the ion beam irradiation comprises one or more species of metal ions.
15. The method of claim 14 , wherein the one or more species of metal ions comprises one or more of: sodium ions, calcium ions, iron ions, platinum ions, palladium ions, iridium ions, rhodium ions, ruthenium ions, aluminum ions, rhenium ions, tungsten ions, and osmium ions.
16. The method of claim 1 , wherein the ion beam irradiation comprises one or more species of noble gas ions.
17. The method of claim 16 , wherein the one or more species of noble gas ions comprises one or more of: helium ions, neon ions, and argon ions.
18. The method of claim 1 , further comprising exposing the lignocellulosic material to a reactive gas during at least part of the ion beam irradiation treatment.
19. The method of claim 18 , wherein the reactive gas comprises ozone.
20. The method of claim 1 , wherein the ion beam irradiation effects the addition of one or more functional groups to one or more of: the lignin, hemicellulose material, and cellulosic material.
21. The method of claim 20 , wherein one or more functional groups are effective to enhance the solubility of lignin and or hemicellulose material in solution.
22. The method of claim 1 , wherein the lignocellulosic material comprises one or more of: paper, Kraft paper, paper products, wood, wood-related materials, particle board, post-consumer waste, offal, grasses, rice hulls, bagasse, jute, hemp, flax, bamboo, sisal, abaca, straw, soybean stover, rice straw, rice hulls, barley straw, canola straw, oat straw, oat hulls, corn fiber, corn cobs, corn stover, wheat straw, rice straw, sugar cane bagasse, coconut hair, algae, seaweed, switchgrass, cord grass, rye grass, miscanthus, reed canary grass, wood wastes, wood residues, forest thinnings, barky wastes, sawdust, recycled wood pulp fiber, newsprint, cardboard, and mixtures of these.
23. The method of claim 1 , wherein the lignocellulosic material receives a total radiation dose of at least 10 Mrad.
24. The method of claim 1 , wherein irradiation is provided at a dose rate of at least 1 Mrad/s.