| abstract |
Apparatus and method for photocatalytic and ultrapure water purification. The water containing organic, inorganic and / or biological contaminants is directed to the semiconductor unit (18), which is a rigid, three-dimensional open cell and fluid permeable. Within the unit, a semiconductor surface capable of raising electrons from the valence band to the conduction band when exposed to a photoexcitation light source (38, 40) removes contaminants by a photocatalytic reaction. |