Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Mirja Lindroos0
Outi Puuppo0
Heikki Heikkila0
Hannu Koivikko0
Hannu Paananen0
Marianne Nystrom0
Mika Manttari0
Date of Patent
March 7, 2006
0Patent Application Number
104518590
Date Filed
December 28, 2001
0Patent Citations Received
Patent Primary Examiner
Patent abstract
The invention relates to a process of separating compounds with a small molar mass from compounds having a molar mass less than 1.9 times that of the compounds with a small molar mass using nanofiltration. The compounds with a small molar mass have a typical molar mass less than 250 g/mol. In one embodiment of the invention, pentose sugars are separated from hexose sugars. The invention can be applied to the recovery of xylose from spent liquors and to the recovery of betaine from sugar beet pulp extracts, for example.
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