PHOTOCATALYTIC ELEMENT FOR PURIFICATION AND DISINFECTION OF AIR AND WATER AND METHOD FOR THE PRODUCTION THEREOF
The invention relates to the field of purification and disinfection of air and water. A photocatalytic ele -ment consists of sintered glass beads with a pore volume fraction from 20% to 40% and a pore size from 0.1 to 0.5 mm, the surface of which is coated with a titanium dioxide powder, having a sp...
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Main Authors | , , , , , |
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Format | Patent |
Language | English French German |
Published |
28.10.2015
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Subjects | |
Online Access | Get full text |
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Summary: | The invention relates to the field of purification and disinfection of air and water. A photocatalytic ele -ment consists of sintered glass beads with a pore volume fraction from 20% to 40% and a pore size from 0.1 to 0.5 mm, the surface of which is coated with a titanium dioxide powder, having a specific surface area of 150-400 m 2 /g, at the rate of 0.5-2%o relative to the total mass of the photocatalytic element. Furthermore, the surface of the glass beads has a relief shape with a relief depression of 0.5-10 urn. The method for producing the photocatalytic element comprises sintering the glass beads at a temperature that is 5-20°C higher than the glass softening temperature, modifying the bead surface with chemical etching agents, and coating the bead surface with the titanium dioxide powder from a water suspension at a pH of 2.9±0.1. The invention provides for the production of a photocatalytic element that is characterised by a strong adhesion and retention of the titanium dioxide powder on the surface of the carrier in the flow of a medium which is subjected to purification, and that has a high photocatalytic activity |
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Bibliography: | Application Number: EP20120890443 |