Methods of pretreating comminuted cellulosic material with carbonate-containing solutions
Patent
·
OSTI ID:1080451
Methods of pretreating comminuted cellulosic material with an acidic solution and then a carbonate-containing solution to produce a pretreated cellulosic material are provided. The pretreated material may then be further treated in a pulping process, for example, a soda-anthraquinone pulping process, to produce a cellulose pulp. The pretreatment solutions may be extracted from the pretreated cellulose material and selectively re-used, for example, with acid or alkali addition, for the pretreatment solutions. The resulting cellulose pulp is characterized by having reduced lignin content and increased yield compared to prior art treatment processes.
- Research Organization:
- The Research Foundation of State University of New York (Albany, NY)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FG02-06ER64266
- Assignee:
- The Research Foundation of State University of New York (Albany, NY)
- Patent Number(s):
- 8,303,767
- Application Number:
- 12/933,185
- OSTI ID:
- 1080451
- Country of Publication:
- United States
- Language:
- English
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