Sustainable On-site Bleach Generation Utilizing Salt and Sunlight

Access to clean water, free of biological contamination, is a serious problem in many parts of the world. Bleach (i.e. sodium hypochlorite) can be used to kill these biological contaminants. A simple, robust on-site method to generate bleach is presented. The system consists of a pair of electrodes, a solar panel and a disposable water bottle. Preliminary field testing in Uganda is discussed.