Main Title |
Novel and Simple Approach to Elimination of Dilute Toxic Wastes Based on Photoelectrochemical Systems. |
Author |
Cooper, G. ;
Nozik, A. J. ;
|
CORP Author |
Solar Energy Research Inst., Golden, CO.;Environmental Protection Agency, Cincinnati, OH. Hazardous Waste Engineering Research Lab. |
Publisher |
Feb 89 |
Year Published |
1989 |
Report Number |
EPA-CR-813055-010; EPA/600/2-89/007; |
Stock Number |
PB89-161855 |
Additional Subjects |
Hazardous materials ;
Water pollution control ;
Photochemical reactions ;
Photoelectricity ;
Solvents ;
Industrial wastes ;
Ground water ;
Surface water ;
Laboratory equipment ;
Performance evaluation ;
Decomposition ;
Reaction kinetics ;
pH ;
Liquid waste disposal ;
Ethylene/trichloro ;
Land pollution ;
Land disposal ;
Environmental transport
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB89-161855 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
31p |
Abstract |
This work investigated several basic parameters, important for extending photocatalytic purification of water contaminated with trichloroethylene (TCE), from the laboratory to the field. Some of these variables strongly influence the decomposition kinetics of the TCE. Parameters investigated were the effect of solution pH, initial TCE concentration, presence of naturally occurring ions, temperature and presence of 'color bodies.' It was found that the photocatalytic decomposition of aqueous TCE occurs more than twice as fast in the pH range 6.4 to 9 than in the range 3.4 to 5. Additionally, various photocatalyst materials were also tested but titanium dioxide exhibited superior activity in decomposing TCE. In this laboratory study low intensity irradiation having the equivalent intensity of 1/4 to 1/5 Solar at AM1 was employed in order to exemplify the feasibility of large scale water purification utilizing natural solar light. |
Supplementary Notes |
Sponsored by Environmental Protection Agency, Cincinnati, OH. Hazardous Waste Engineering Research Lab. |
NTIS Title Notes |
Final rept. Jan 86-Jan 88. |
Category Codes |
68C; 68D; 99E; 99F |
NTIS Prices |
PC A03/MF A01 |
Primary Description |
600/12 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
913123747 |
Origin |
NTIS |
Type |
CAT |