| Main Title |
Complexes Affecting the Solubility of Calcium Carbonate in Water. |
| Author |
Larso, Thurston E. ;
Sollo, Jr, F. W. ;
McGur, Florence F. ;
|
| CORP Author |
Illinois Univ., Urbana. Water Resources Center. |
| Year Published |
1973 |
| Report Number |
UILU-WRC-73-0068 ;WRC-RR-68; DI-14-31-0001-3513; OWRR-A-051-ILL ;OWRR-S-O29-ILL; 13005,; A-051-ILL(1) |
| Stock Number |
PB-222 496 |
| Additional Subjects |
( Calcium carbonates ;
Solubility) ;
( Magnesium carbonates ;
Solubility) ;
Complex compounds ;
Dissociation ;
Chemical equilibrium ;
Hydroxides ;
Bicarbonates ;
pH ;
Scale(Corrosion) ;
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB-222 496 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
52p |
| Abstract |
Corrosion and scale formation in water distribution systems are generally controlled by pH adjustment. The proper pH depends on the calcium and alkalinity concentrations, but is also affected by formation of certain complexes. If a portion of the calcium and a portion of the alkalinity or carbonate are complexed, this would reduce the concentrations of free ions effective at equilibrium, and make the true pHs higher than that calculated from the gross concentrations found by analysis. The specific objective of this project was to evaluate the dissociation constants for these complexes so that the optimum pH can be more accurately calculated. The dissociation constants of interest were those of the complexes formed by the calcium and magnesium ions with the carbonate, bicarbonate, and hydroxide anions. |
| NTIS Title Notes |
Research rept.. |
| PUB Date Free Form |
Jul 73, |
| Category Codes |
7B; 7A; 59C; 59B; 99D; 99B |
| NTIS Prices |
PC A04/MF A01 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
326565220 |
| Origin |
NTIS |
| Type |
CAT |
