Record Display for the EPA National Library Catalog


Main Title Laboratory studies on the stability and transport of inorganic colloids through natural aquifer material /
Author Puls, Robert W. ; Puls, R. W. ; Powell, R. M.
Other Authors
Author Title of a Work
Powell, Robert M.
CORP Author Robert S. Kerr Environmental Research Lab., Ada, OK. ;ManTech Environmental Technology, Inc., Ada, OK.;Department of Energy, Washington, DC. Environmental Sciences Div.
Publisher [Robert S. Kerr Environmental Laboratory, U.S. Environmental Protection Agency],
Year Published 1993
Report Number PB93175537
Stock Number PB93-175537
OCLC Number 28572680
Subjects Colloids--Environmental aspects ; Organic water pollutants ; Groundwater flow
Additional Subjects Arsenates ; Colloids ; Environmental transport ; Water pollution ; Aquifers ; Inorganic compounds ; Stability ; Permeability ; Flow rate ; Iron oxides ; Ground water ; Ions ; Clay minerals ; Electrolytes ; Particle size ; Adsorption ; Porous media ; Concentration(Composition) ; Reprints ;
Library Call Number Additional Info Location Last
EMBD MF PB93-175537 NRMRL/GWERD Library/Ada,OK 04/16/2004
NTIS  PB93-175537 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation pages 305-307 ; 28 cm
Colloids are generally defined as inorganic or organic particles with diameters less than 10 microns. Colloidal material may be released from the soil or geologic matrix and transported large distances given favorable hydrological and geochemical conditions. Once released, the primary factors controlling colloidal transport in subsurface systems are colloidal stability, flow rate, and the nature of the solid matrix through which ground water flows. In addition to having a high surface area per unit mass, colloids such as clay minerals and iron oxides are also extremely reactive sorbents for metals and other contaminants. If mobile in subsurface systems, these colloids can effect the migration of sorbed contaminants much larger distances than current transport models would predict. Column experiments were run to determine the effects of pH, flow rate, ionic strength, electrolyte composition, particle size and particle concentration on colloidal stability and transport.
Published in Manipulation of groundwater colloids for environmental restoration. "EPA/600/A-93/072" PB93-175537 Includes bibliographical references (p. 307). Microfiche.