I've got a few used Brita water filters, thinking they might be useful for something. They were time-expired, so I wouldn't use them for anything potable, but they were still softening the water when swapped out, although I presume I could recharge the ion exchange part in them them by washing through with Brine? So, has anyone come up with some use for these? Seems a shame to chuck them out.
Nope, they use a hydrogen/calcium exchange rather than a sodium/calcium exchange. I believe you would need to use Hydrochloric Acid to regenerate them. If they swapped sodium for calcium they wouldn't be terribly good for potable water.
there is a recycling scheme for them.
Recycle your used BRITA cartridges Send them back to our Freepost address - BRITA RECYCLING, FREEPOST NAT17876, Bicester, OX26 4BR.
from the brita web page:
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