| 摘要 |
Biomass (e.g., plant biomass, animal biomass, and municipal waste biomass) is processed to produce useful products, such as fuels. For example, systems are described that can use feedstock materials, such as cellulosic and/or lignocellulosic materials, to produce ethanol and/or butanol, e.g., by fermentation. |
| 主权项 |
1. A composition comprising:
a cellulosic or lignocellulosic material having a peak maximum molecular weight, as determined by Gel Permeation Chromatography according to the method described in Example 9, of less than 25,000, and a crystallinity of less than 55 percent as determined by X-ray diffraction according to the method described in Example 10, wherein the material has a bulk density of less than 0.5 g/cm3, wherein the bulk density is determined using ASTM 018958. |
