Method for decomposing bromic acid by photocatalyst and apparatus therefor
US6372095B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 1999 |
| Grant date | Apr 16, 2002 |
| Priority date | — |
| Expiry date | Sep 8, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2101/12
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The invention relates to a method for decomposing bromate ions contained in a liquid. The method includes the sequential steps of bringing the liquid into contact with a photocatalyst; and irradiating the photocatalyst with a light ray having an energy that is not lower than that of a band gap of the photocatalyst, thereby generating a photocatalytic reaction to decompose the bromate ions. The invention further relates to an apparatus for decomposing bromate ions contained in a liquid. The apparatus includes a first section for generating therein a photocatalytic reaction to decompose the bromate ions; a photocatalyst adapted to be brought into contact with the liquid in the first section; and a light source for irradiating the photoacatalyst with the light ray such that the photocatalytic reaction is generated in the first section when the photocatalyst is in contact with the liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.