No Filter Water Purification

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A new water purification technique relies on an injection of CO2 gas into a water stream...
A new water purification technique relies on an injection of CO2 gas into a water stream rather than filters or membranes to separate particles from water(Credit: brozova/Depositphotos)

Most common water purification methods rely on mechanical filters or a membrane to remove contaminants. But over time, these become clogged and need to be replaced. A new technology developed by researchers at Princeton University doesn’t require filters at all, instead relying on the injection of CO2 gas to change the water’s chemistry and separate waste particles based on their electrical charge.

The system is simple and low-cost, consisting of a silicone rubber tube that is split into two channels at one end. Because silicone rubber is permeable to CO2, the pressurized gas is able to diffuse through one wall of the tube and mix with the water flowing inside. This interaction alters the chemistry of the water, making it slightly more acidic and creating charged particles, or ions.

One of these ions is a positively charged hydrogen atom, which moves quickly through the water solution, while another is a bicarbonate molecule with a negative charge that moves through the water more slowly. The movement of these molecules creates a small electric field and, because most particles suspended in the water have a charge, they are attracted to one side of the water stream, while the filtered water, which has no charge, continues in its own channel. The tube then splits in two, with the filtered water flowing through one, and the waste particles flowing through the other.

Injecting CO2 into the water channel causes particles to move to one side of the water,...

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About the Common Constitutionalist

Brent, aka The Common Constitutionalist, is a Constitutional Conservative, and advocates for first principles, founders original intent and enemy of progressives. He is former Navy, Martial Arts expert. As well as publisher of the Common Constitutionalist blog, he also is a contributing writer for Political Outcast, Godfather Politics, Minute Men News (Liberty Alliance), Freedom Outpost, the Daily Caller, Vision To America and Free Republic. He also writes an exclusive weekly column for World Net Daily (WND).

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