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Author Topic: Zeolites  (Read 497 times)
MR GUS
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« on: June 15, 2017, 03:53:24 PM »

I know zeolites have popped up in discussion periodically since around 2012, are they any nearer to implementation in other household items beyond pricey dishwashers

(A dishwasher such as a modern Bosch series 4 has a mere 1.15kg in a chamber to make boastful energy savings of 20% )

Seems daft not to use this volcanic eruption & mining by-product across the board, why are we dragging our heels? ..guess its a lot less "sexy" an issue compared to that 10 year phone roaming saga of the EU !?
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Austroflamm stove & lot's of Lowe alpine fleeces, A "finger" of Solar Sad
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Screw FITS ..it is, & always has been about the environment (said the penny-pinching Scotsman)
Philip R
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« Reply #1 on: June 15, 2017, 05:31:46 PM »

The zeolites contained in the dishwasher are a man made "zeolite" based on a polystyrene resin in the cation form. The " zeolite" resin beads are the heart of the ion exchange unit, better known as a water softener. which is regenerated by rinsing salt brine through it, thus exchanging calcium and magnesium hardness ions for sodium ions, which do not fur up your heating appliance. Hence the energy saving claim.

BTW if you live in a soft water area, then your lucky and do not need one.

 If you are interested to read up on the topic. then look at the Rohm and Haas website, or that from Dow corperation, regarding there Dowex resins.

Back in my power station career, the water treatment plant had loads of these resins present in cation and anion form . using caustic soda and sulphuric acid to regenerate.

The condensate polishing plant contained even more resins in "Mixed bed units". The water was ultrapure,
( tried a cup for taste, was reprimanded by station chemist, as dangerous to health) utterly without any taste and did not hit the spot regarding thirst. Not ever repeated.

The old manual regenerated Permutit water softener in my parental home had R & H 225 resin in it.

Philip R
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MR GUS
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« Reply #2 on: June 15, 2017, 08:16:03 PM »

Thanks Philip, I'll read up indeed!
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Austroflamm stove & lot's of Lowe alpine fleeces, A "finger" of Solar Sad
Noli Timere Messorem
Screw FITS ..it is, & always has been about the environment (said the penny-pinching Scotsman)
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