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Which is the year zeolite was used as ion exchange water softeners?

Which is the year zeolite was used as ion exchange water softeners? Correct Answer 1905

In 1905, Gans, a German chemist, used synthetic aluminosilicate materials known as zeolites in the first ion exchange water softeners. Although aluminosilicate materials are rarely used today, the term “zeolite softener” is commonly used to describe any cation exchange process.

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