The problem with most water purification methods is that they become clogged and need to be replaced over time. 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. Simple and low-cost, this technique could be used in a portable water purification system, or it could be scaled up to help communities produce large quantities of clean water.
Researchers develop low-cost purification system that uses CO2 gas to clean water
More of Today's Solutions
The Ocean Cleanup removed a record 25 million kilos of plastic in 2025 (and t...
BY THE OPTIMIST DAILY EDITORIAL TEAM In a world where the scale of plastic pollution can feel overwhelming, 2025 brought a milestone worth celebrating: ...
Read MoreAncient nits aid uncovering of human ancestry
To uncover information about ancient genomes scientists have previously relied on fossils of bones and teeth. Alongside ethical issues, the problem with this is ...
Read MoreAlways late? Here’s 7 tips to curb the habit
We’ve all run late before, whether it was because of a missed alarm, couldn't find the right outfit, or getting stuck in traffic. It ...
Read MoreHow Uruguay achieved 98% renewable energy
During the 2000s, as global fossil fuel costs skyrocketed, Uruguay faced a tremendous issue. Uruguay, as a country heavily reliant on foreign oil, found ...
Read More
