| Main Title |
Factors Affecting the Photochemical Treatment of Hazardous Waste (Journal Version). |
| Author |
Zepp, R. G. ;
|
| CORP Author |
Environmental Research Lab., Athens, GA. |
| Year Published |
1988 |
| Report Number |
EPA/600/J-88/040; |
| Stock Number |
PB88-225487 |
| Additional Subjects |
Waste treatment ;
Hazardous materials ;
Photochemical reactions ;
Adsorption ;
Reprints ;
Hazardous wastes ;
Photochemical treatment
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB88-225487 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
5p |
| Abstract |
The photochemical treatment of hazardous waste can be optimized by taking into account various factors that influence the rates of photochemical reactions. Physical factors that facilitate photochemical treatment include: (1) maximizing the irradiated surface to volume ratio of the system; (2) selecting a light source with a spectrum that strongly overlaps the absorption spectrum of the chromophore; and (3) vigorously mixing the reaction mixture. Although hazardous wastes are degraded by direct absorption of light, the overall rate of light-induced reactions can usually be accelerated by adding to the treatment system various dissolved or particulate substances that, on light absorption, produce reactive excited states or free radical intermediates that react with the waste. Examples of such additives include ozone, perixides, semiconducting metal oxides such as titanium dioxide, and various organic photosensitizers that efficiently photoproduce excited triplet states. |
| Supplementary Notes |
Pub. in Environmental Science and Technology, v22 n3 p256-257 Mar 88. See also PB88-202478. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Factors Affecting the Photochemical Treatment of Hazardous Waste (Journal Version). |
| PUB Date Free Form |
1988 |
| Category Codes |
68C; 99E |
| NTIS Prices |
PC A02/MF A01 |
| Primary Description |
600/01 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
826018393 |
| Origin |
NTIS |
| Type |
CAT |
