Process to improve the functioning of a membrane of a nanofiltration device
AssigneeEastman Kodak Company
InventorDidier J. Martin
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Abstract
A method to improve the functioning of a membrane of a nanofiltration device provided to filter a solution optimizes the retention rate of the membrane. In the method, the permeate and the retentate are circulated through the nanofiltration membrane for a time before starting to use the membrane. The method is applicable to the treatment of photographic baths.
Claims6
A method of improving a functioning of a membrane of a nanofiltration device provided to filter a solution having a permeate and a retentate, in which the permeate in the solution to be filtered is recycled, wherein, before starting a utilization of the membrane, the method comprises circulating the permeate and the retentate through the nanofiltration membrane for a set time.
Dependencies are inferred from the claim text.