Process for treating biomass to produce materials useful for biofuels
US9873665B2 · kind B2 · utility
3Cited by
9References
32Claims
0Family size
Inventors
Key dates
| Filing date | Aug 13, 2015 |
| Grant date | Jan 23, 2018 |
| Priority date | — |
| Expiry date | Oct 31, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E50/30
- WIPO fieldFood chemistry
- WIPO sectorChemistry
Abstract
Since biomass is always accompanied by caustic inorganic materials, we have found that the formation of the anion salt of α-hydroxysulfonic acid represent the largest “loss” of the α-hydroxysulfonic acid in the potential reversible acid pretreatment process. By titrating the α-hydroxysulfonic acid salt with strong mineral acid and then reverting the alfa-hydroxysulfonic acid as its primary components, the acid components can be recovered substantially quantitatively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.