Method for purification of glycerol from biodiesel production
US7534923B2 · kind B2 · utility
1Cited by
2References
9Claims
0Family size
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Key dates
| Filing date | Aug 5, 2008 |
| Grant date | May 19, 2009 |
| Priority date | — |
| Expiry date | Aug 5, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C29/88
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for purification of crude glycerol, especially crude glycerol derived from biodiesel production using alkaline catalysts. The method comprises combining the crude glycerol with acid, separating a glycerol layer, and treating the glycerol layer to decolorize it.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.