Main Title |
Sulfide to Sulfate Reaction Mechanism. A Study of the Sulfide to Sulfate Reaction Mechanism as it Related to the Formation of Acid Mine Waters. |
Author |
Smit, E. E. ;
Shumat, K. S. ;
|
CORP Author |
Ohio State Univ. Research Foundation, Columbus. |
Year Published |
1970 |
Report Number |
FWPCA-14010-FPS; |
Stock Number |
PB-214 876 |
Additional Subjects |
( Sulfide minerals ;
Oxidation) ;
( Pyrite ;
Oxidation) ;
( Water pollution ;
Mine waters) ;
( Biodeterioration ;
Pyrite) ;
Aquatic microbiology ;
Iron sulfides ;
Ferrobacillus ;
Mine acid drainage
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB-214 876 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
129p |
Abstract |
A detail study of the mechanisms and kinetics of the chemical reactions responsible for acid mine drainage is discussed. The mineralogical features of the solid phase reactant (pyrite) that determine its reactivity were described. The rate-limiting reactions and variables affecting the rate of these reactions were identified. It was found that two basic oxidation modes are important: oxygenation, in which oxygen is the immediate oxidizing agent; and ferric ion (or microbiologically catalyzed) oxidation, in which ferric ions are the oxidants. From a knowledge of the dissolved oxygen, ferric/ferrous ratio, and total iron ion content at the reaction site, the reaction regime can be determined. Kinetic equations were derived for both reaction modes. From these basic relationships the oxidation rate in real pyritic systems can be accurately predicated when conditions at the reaction site are known. (Author) |
Supplementary Notes |
Prepared in cooperation with Federal Water Pollution Control Administration. |
Availability Notes |
Paper copy available from GPO $1.50 as stock no. EP2.10:14010 FPS-02/70. |
PUB Date Free Form |
Feb 70, |
Category Codes |
6M; 13B; 68D; 57K |
NTIS Prices |
PC-GPO/MF A01-NTIS |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
326538402 |
Origin |
NTIS |
Type |
CAT |