| Main Title |
Surface-Charge Repulsive Effects on the Mobility of Inorganic Colloids in Surface Systems. Annual Colloid and Surface Science Symposium (65th). Held in Norman, Oklahoma on June 17-19, 1991. |
| Author |
Puls, R. W. ;
Powell, R. M. ;
|
| CORP Author |
Robert S. Kerr Environmental Research Lab., Ada, OK. ;ManTech Environmental Technology, Inc., Ada, OK. |
| Publisher |
1992 |
| Year Published |
1992 |
| Report Number |
EPA/600/A-92/118; |
| Stock Number |
PB92-191139 |
| Additional Subjects |
Subsurface investigations ;
Environmental transport ;
Colloids ;
Inorganic compounds ;
Water pollution ;
Ground water ;
Particle size distribution ;
Remedial action ;
pH ;
Chemical composition ;
Electrolytes ;
Concentration(Composition) ;
Flow rate ;
Electrophoresis ;
Surface chemistry ;
Iron oxides ;
Reprints ;
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB92-191139 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
18p |
| Abstract |
Batch and column experiments using natural aquifer material investigated the specific adsorption of anions onto charged inorganic colloidal surfaces in terms of enhanced colloid stability and transport in subsurface model systems. Variables in the study included flow rate, pH, ionic strength, aqueous chemical composition, colloid concentration and size. Specific adsorption of some anions resulted in enhanced colloid stability and transport of Fe2O3 particles due to increases in charge repulsion between the particles in suspension and between the particles and the immobile column matrix minerals. Extent of particle breakthrough was dependent upon a complex variety of parameters; however, the highest statistical correlation was observed with particle size and ionic composition of the supporting electrolyte. |
