Membrane Stacks and Their Uses
AssigneesFujifilm Manufacturing Europe B.V., FUJIFILM Corporation
InventorsAdrianus Jacobus Van Rijen, Elisa Huerta Martinez
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Abstract
A stack of ion exchange membranes suitable for water purification comprising a plurality of anion exchange membranes (AEMs) and a plurality of cation exchange membranes (CEMs), wherein the colour properties of the AEMs are visibly different to the colour properties of the CEMs. The invention also provides a process for making membrane stacks in which the likelihood of there being two consecutive membranes of like charge is reduced. Furthermore, it is easy to identify whether there are two consecutive membranes of like charge present in the stacks.
Claims21
A stack of ion exchange membranes comprising a plurality of anion exchange membranes (AEMs) and a plurality of cation exchange membranes (CEMs), wherein the colour properties of the AEMs are visibly different to the colour properties of the CEMs.
(canceled)
A process for preparing a stack of ion exchange membranes comprising the steps:
- (i) providing a plurality of AEMs and a plurality of CEMs wherein the colour properties of the AEMs are visibly different to the colour properties of the CEMs;
- and
- (ii) assembling the stack such that the AEMs and the CEMs are in alternating order using the visible difference in colour properties.
Dependencies are inferred from the claim text.