| 摘要 |
The invention provides an apparatus and method for photocatalytic degradation/destruction of contaminants in solids. The apparatus can be designed for in-situ, on-site, or remote usage, and generally comprises a reactor housing (20) in which solid material is simultaneously exposed to a photoactivatable catalyst (16) and light energy (18). The reactor housing includes a means for agitating the solid material (38) such as a baffle system, to maximize exposure of the solid material to the catalyst and light energy. The method of the invention utilizes photocatalysis to degrade contaminants in/or sorbed to the solid material. The solid material may be separated into a suspended portion within an aqueous source of free radicals and a bottom portion. The exposure of a catalyst to light energy causes the production of free radicals which, when in contact with the contaminants in the suspended portion or the bottom portion, react with the contaminants to degrade the contaminants. |
