A research team developed a mug-sized, cube-shaped device that can use battery-generated electricity to eliminate bacteria from contaminated water.
The cup-like device purifies water by using electricity. Once water is poured into the device, electricity is run through a foam-encased, "branched" electrode inside. This electric field attracts E. coli cells to "swim" into the electrode branches, making the water clean and drinkable.
A 3D-printed prototype of a portable water purification device, shown without the needed electrodes. While it only takes about 20 minutes to clean the water, the device can work continuously for many hours, according to the research team. To power the new device, users could turn to batteries, such as a car battery, and solar panels. Having alternate sources of energy allows the device to be used during
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