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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Bibliographic Details
Main Authors DOMASHNEV, IGOR ANATOLEVICH, TROITSKY, VLADIMIR NIKOLAEVICH, KURKIN, EVGENY NIKOLAEVICH, BERESTENKO, VICTOR IVANOVICH, BALIKHIN, IGOR LVOVICH, KABACHNIKOV, EVGENY NIKOLAEVICH
Format Patent
LanguageEnglish
French
German
Published 28.10.2015
Subjects
CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
DISINFECTION, STERILISATION, OR DEODORISATION OF AIR
HUMAN NECESSITIES
HYGIENE
MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES
MEDICAL OR VETERINARY SCIENCE
METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
THEIR RELEVANT APPARATUS
TRANSPORTING
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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
Bibliography:Application Number: EP20120890443