water disinfection (IMAGE)

Stanford University

water disinfection

Caption

Disinfectant powder is stirred in bacteria-contaminated water (upper left). The mixture is exposed to sunlight, which rapidly kills all the bacteria (upper right). A magnet collects the metallic powder after disinfection (lower right). The powder is then reloaded into another beaker of contaminated water, and the disinfection process is repeated (lower left).

Credit

Tong Wu

Usage Restrictions

No restrictions.

License

Public Domain

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