review of osmosis to explain reverse osmosis by MarijanStefanovic

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									Review of Osmosis to Explain Reverse Osmosis

Have you heard about reverse osmosis? It should truly be a useful and
advantageous process of liquid purification because more and more
industries are using it. Around the world, the importance of reverse
osmosis is also becoming more emphasized. As many experts say, the
process holds a lot of potential. It could be a system that could
eventually bring about aid and redemption. But what exactly is it? Why is
it truly effective? Could it be done using improvised setups? How does it
work?

It would just be impossible to understand reverse osmosis without first
understanding normal osmosis, where it is derived from. As you could
infer, reverse osmosis is only an opposite take of the usual process of
osmosis. The dictionary defines osmosis as a natural movement of solvent
molecules through semi-permeable membranes so that they could transfer
into the side where there is there is lower concentration of solution. In
the process, concentration on different sides is equalized so that in the
end, there would be no difference on concentration. Osmosis naturally
stops the moment such equality of concentration is achieved.

Semi-permeable membranes are membranes that are serving as boundaries
between two regions. They are structures where molecules could pass
through. Example is a saran wrap, which looks impermeable but is actually
permeable. Other good examples are cell walls and intestines. There are
very small pores that could allow entry of very miniscule molecules of
water. Such pores are too small that they do not allow passage of other
liquid molecules and other bodies. Gore-tex fabric could also be an
example.

In reality, osmosis is the very same reason why consuming or drinking
salty water is very dangerous. Drinking seawater or ocean water could
kill anyone, especially if there is much volume consumed. When you do so,
the salty water would be temporarily stored into the stomach. Natural
osmotic pressure would work and begin drawing water from other parts of
the body so that your body would be able to dilute the amount of salt
molecules that are stored in the stomach. When the process goes on
continuously, you would eventually dehydrate, which could lead to death.
It could take only a few minutes or hours for the body to complete the
process. This is one of the reasons why many people who drown in sea die.

Reverse osmosis is the exact opposite of the natural osmosis process. The
idea is for the semi-permeable membrane to serve as a fine filter that
would create safe and potable drinking water out of the contaminated
water. This process could very much be illustrated through desalination.
Salty water is stored in one side of a membrane, while the less salty is
on the other. Pressure would be applied to stop and later reverse the
natural osmotic process. Usually, this setup would require much pressure
and would take a long time to complete. But there is no doubt that it
would truly and effectively work.

Reverse osmosis is now widely used as a process of purifying water. It is
also the same concept used in dialysis. Many industries are also starting
to use reverse osmosis in their operations. Even disinfection activities
could now use this helpful and useful process.

There is no doubt that in the future, many devices that facilitate the
process would be more widely available for any household to use.


								
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