Process for treatment of a fluid
US5580461A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1994 |
| Grant date | Dec 3, 1996 |
| Priority date | — |
| Expiry date | Sep 26, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F1/28
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A continuous process for treating a fluid comprising at least one chemical contaminant. The process comprises the steps of: (i) contacting the fluid with a particulate absorbent material; (ii) allowing the adsorbent material to adsorb the chemical contaminant present in the fluid and thereby produce a substantially purified fluid and a contaminant-carrying adsorbent material with the proviso that the adsorbent material is not completely loaded with the contaminant; (iii) separating the contaminant-carrying adsorbent material from the substantially purified fluid; (iv) contacting the contaminant-carrying adsorbent material with an aqueous slurry of a metal oxide in the presence of an electron acceptor and electromagnetic radiation in at least one of the ultraviolet and visible regions; (v) allowing the contaminant carried on the adsorbent material to decompose to form a product; (vi) dissociating the product from the contaminant-carrying adsorbent to provide a regenerated adsorbent material; (vii) recycling the regenerated adsorbent material to Step (i); and (viii) recycling the aqueous slurry to Step (iv). In Step (iv) of the process, contact of the contaminant-carrying adsorbent m…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.