✦ LIBER ✦
Heterogeneous photocatalysis for water purification: Contaminant mineralization kinetics and elementary reactor analysis
✍ Scribed by Ollis, David F. ;Turchi, Craig
- Publisher
- American Institute of Chemical Engineers
- Year
- 1990
- Tongue
- English
- Weight
- 551 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0278-4491
No coin nor oath required. For personal study only.
✦ Synopsis
Heterogeneous photocatalysis is the third and newest of an emerging series of photolytic technologies for water treatment and purijication. The earlier examples of ultraviolet ozonation and ultraviolet peroxidation involved direct photoactivation of the contaminant andlor dissolved o&nt and are dominuted by solution phase chemistry. Photocatalysis, in contrast, involves photoactivation of the heterogeneous catalyst (an example of indirect photochemical processes) and is dominated by reaction events initiated at the catalyst surface. This paper summarizes (1) current rate equations for photocatalyzed simultaneous destruction of multiple oxidizable organic contaminants and (2) simplified convective transport equations appropriate to photoreactor design under various degrees of jiuid mixing and simultaneous reaction contributions by heterogeneous
(photocatalyzed) as well as homogeneous reactions.