Low-cost TiO2 Photocatalytic Technology for Water Potabilization in Plastic Bottles For Isolated Regions. Photocatalyst Fixation.

JORGE M. MEICHTRY; HURNG J. LIN; LUCIANA DE LA FUENTE; IVANA K. LEVY; EDUARDO A. GAUTIER; MIGUEL A. BLESA; MARTA I. LITTER

JOURNAL OF SOLAR ENERGY ENGINEERING-TRANSACTIONS OF THE ASME

ASME-AMER SOC MECHANICAL ENG

Lugar: New York; Año: 2007 vol. 129 p. 119 - 126

0199-6231

Experiments to evaluate the photocatalytic activity of supported TiO2 to potabilize waterin common plastic PET bottles under solar irradiation were performed. Commercialtitanium dioxide (Degussa P-25) was applied to different cheap materials—glass rings,glass rods and porcelain beads—by dip coating, or directly to the plastic wall of thebottles. The adherence and stability of TiO2 on the supports and the photocatalyticactivity in bottles under solar irradiation was evaluated using model compounds as4-chlorophenol and 2,4-dichlorophenoxyacetic acid. Rings were found to be the bestglass supports, but PET bottles were superior for this specific application, as no fragilefillings are used, and the materials can be easily fabricated on site.