| Main Title |
Studies on Limestone Treatment of Acid Mine Drainage. |
| CORP Author |
Bituminous Coal Research, Inc., Monroeville, Pa. |
| Year Published |
1970 |
| Report Number |
FWPCA-DAST-33; FWPCA-14010-EIZ ;FWQA-63-01-68; FWPCA-14010-EIZ; 00620,; 14010-EIZ-01/70 |
| Stock Number |
PB-195 282 |
| Additional Subjects |
( Coal mining ;
Mine waters) ;
( Water pollution ;
Mine waters) ;
( Mine waters ;
Neutralizing) ;
Drainage ;
Limestone ;
Particle size ;
pH ;
Particle shape ;
Calcium ;
Magnesium ;
Activated carbon ;
Zeta potential ;
Iron inorganic compounds ;
Magnetic separators ;
Sludge ;
Precipitates ;
Coagulation ;
Oxidation ;
Hydroxides ;
Pilot plants ;
Mine acid drainage ;
Water pollution control ;
Iron hydroxides
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB-195 282 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
106p |
| Abstract |
Four actual coal mine waters have been neutralized with limestone both on a batch scale and by utilizing a continuous flow apparatus. Variations in treatment procedure were necessary depending on the characteristics of the individual waters. A standardized test was established to evaluate the reactivity of the limestones. The following variables are of importance in evaluating limestones for coal mine water neutralization: (a) particle size, (b) Ca and Mg content, and (c) surface area. Ferrous iron oxidation has been accomplished with both synthetic and actual coal mine water at low pH in the presence of coal-derived activated carbon. Electrophoretic mobility studies on precipitates obtained by both lime and limestone neutralization of coal mine water yielded information which can be applied for more effective sludge removal. Magnetic sludges were prepared using two different iron-bearing waters. The conversion of precipitates to a magnetic form results in significant reductions in settled sludge volumes as well as increases in solids content. Data obtained in these studies indicate that the limestone process offers considerable promise for an improved lower cost method for treating several types of coal mine waters. (Author) |
| Supplementary Notes |
Report on Optimization and Development of Improved Chemical Techniques for the Treatment of Coal Mine Drainage. Paper copy available from Superintendent of Documents, GPO, Washington, D.C. $1.25 as I67.13/4DAST33. |
| NTIS Title Notes |
Water pollution control research series. |
| PUB Date Free Form |
Jan 70, |
| Category Codes |
13B; 8I; 68D; 64I |
| NTIS Prices |
PC SOD MF A01 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
326513688 |
| Origin |
NTIS |
| Type |
CAT |
