| Main Title |
Oxidation-Reduction Capacities of Aquifer Solids. |
| Author |
Barcelona, M. J. ;
Holm, T. R. ;
|
| CORP Author |
Western Michigan Univ., Kalamazoo. ;Illinois State Water Survey Div., Champaign.;Robert S. Kerr Environmental Research Lab., Ada, OK. |
| Publisher |
c1991 |
| Year Published |
1991 |
| Report Number |
EPA-R813149; EPA/600/J-91/238; |
| Stock Number |
PB92-110410 |
| Additional Subjects |
Oxidation reduction reactions ;
Sand aquifers ;
Aquifer management ;
Water pollution control ;
Ground water ;
Hydrogen peroxide ;
Electron transfer ;
Microorganisms ;
Reaction kinetics ;
Chromium oxides ;
Reprints ;
Poising capacity ;
Aquifer solids
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB92-110410 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
9p |
| Abstract |
Oxidation-reduction processes play a major role in the mobility, transport, and fate of inorganic and organic chemical constituents in natural waters. Therefore, the manipulation of redox conditions in natural and treated water systems is assumed to be a common option for the control of contaminant concentrations. Measurements of the oxidation (i.e., of aqueous Cr(2+)) and reduction (i.e., of aqueous Cr2O7(2-) and H2O2) capacities of aquifer solids and groundwater have been made on samples from a sand-and-gravel aquifer. The groundwater contributed less than 1% of the system oxidation or reduction poising capacity. Reduction capacities averaged 0.095, 0.111, and 0.136 mequiv/g of dry solids for oxic, transitional, and reducing Eh conditions, respectively. Measured oxidation capacities averaged 0.4 mequiv/g of dry solids over the range of redox intensity conditions. These capacities represent considerable resistance to the adjustment of redox conditions even at uncontaminated sites. Hydrogen peroxide reduction by aquifer solid samples proceeds rapidly relative to microbially mediated decomposition. The study indicates the need for closer scrutiny of the predictability and cost effectiveness of attempts to manipulate redox conditions in poorly poised aquifer systems. |
| Supplementary Notes |
Pub. in Environmental Science Technology, v25 n9 p1565-1572 1991. Prepared in cooperation with Illinois State Water Survey Div., Champaign. Sponsored by Robert S. Kerr Environmental Research Lab., Ada, OK. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Oxidation-Reduction Capacities of Aquifer Solids. |
| Category Codes |
48G; 99F; 68D |
| NTIS Prices |
PC A02/MF A01 |
| Primary Description |
600/15 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
135319992 |
| Origin |
NTIS |
| Type |
CAT |
