Salt can be removed from briny water through the process of reverse osmosis. This process came about over 40 years ago as a way to remove the salt from sea water. Reverse osmosis is done by applying pressure to the salty water and forcing it through a semi-permeable membrane, which leaves behind the salt. This process has also been known to remove contaminants from the water as well.
Sea salt is made simply by placing ocean water out in the sun and letting it evaporate. If you are willing to wait a while, simply leave it out in the sun while it evaporates. You can put something on top of the container to collect the water as it evaporates. Here is a really cool video that shows how you can distill your own water:
Desalination machines are gaining a lot of popularity and are vital in some countries for fresh water at the moment. The South Pacific Islands are going through a terrible drought right now, and they have to use desalination machines to get fresh water. The rising sea levels have contaminated their underground fresh water supply as well.
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