Purifying your home’s water supply can mitigate the
risks posed by undesirable chemicals and minerals, as well as water-borne diseases.
These days, quite a number of households rely on reverse osmosis (RO) water
treatment systems to filter out contaminants. These systems render water safe
for consumption by reversing its flow, as the name implies, as it passes through
a semi-permeable membrane and filters.
RO membranes can either be cellulose acetate or polyamide
membranes. Cellulose acetate membranes are layers of fibers—usually plant-based—that
allow water to pass through and prevent bar salts from seeping through. These membranes,
which are typically fashioned into sheets, are exceptionally durable except
when exposed to highly acidic substances and extreme heat. Both factors can
degrade the sheets and render them useless.
Polyamide membranes are similar in form to
cellulose acetates, as they are also created in thin sheets. The difference lies
in the capacity of polyamide membranes to withstand higher temperatures (up to
35 degrees Celsius) and their superior ability to resist damage due to bacterial
buildup.
Choosing either of these two RO membranes for one’s
water purifier depends on how badly the water supply needs purifying. More
acidic water requires polyamide membranes, while highly salty water calls for
cellulose acetate.
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