COLLOID RELEASE AND TRANSPORT IN AGRICULTURAL SOIL AS IMPACTED BY SOLUTION CHEMISTRY
نویسندگان
چکیده
منابع مشابه
Hysteresis of colloid retention and release in saturated porous media during transients in solution chemistry.
Saturated packed column and micromodel transport studies were conducted to gain insight on mechanisms of colloid retention and release under unfavorable attachment conditions. The initial deposition of colloids in porous media was found to be a strongly coupled process that depended on solution chemistry and pore space geometry. During steady state chemical conditions, colloid deposition was no...
متن کاملColloid Release from Different Soil Depth
Naturally occurring clay colloidal particles are heavily involved in sediment processes in the subsurface soil. Due to the importance of these processes in the subsurface environment, the transport of clay colloidal particles has been studied in several disciplines, including soil sciences, petrology, hydrology, etc. Specifically, in environmental engineering, clay colloid release and transport...
متن کاملEquilibrium and kinetic models for colloid release under transient solution chemistry conditions.
We present continuum models to describe colloid release in the subsurface during transient physicochemical conditions. Our modeling approach relates the amount of colloid release to changes in the fraction of the solid surface area that contributes to retention. Equilibrium, kinetic, equilibrium and kinetic, and two-site kinetic models were developed to describe various rates of colloid release...
متن کاملEffect of solution chemistry on clay colloid release from an iron oxide-coated aquifer sand.
This research compared the influence of (1) dissolution of iron oxides and (2) alteration of electrostatic interactions on the mobilization of colloids in a clayand iron oxidecoated sand obtained from an Atlantic Coastal Plain aquifer in which colloids have been found suspended only in anoxic groundwater. The sediment was flushed with solutions of varying ionic strength, pH, and reductant and s...
متن کاملColloid Chemistry; Principles and Applications
COLLOID CHEMISTRY; PRINCIPLES AND APPLICATIONS. By Jerome Alexander, M.Sc., Consulting Chemist and Chemical Engineer. Third Edition. D. Van Nostrand Company, Inc., New York, 1929. pp. X+270. The author's treatment of principles occupies 75 pages, practical applications are given I58 pages, and there is a brief appendix entitled Experimental Suggestions or Laboratory Manual. This division of spa...
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ژورنال
عنوان ژورنال: Journal of Urban and Environmental Engineering
سال: 2011
ISSN: 1982-3932
DOI: 10.4090/juee.2011.v5n2.084090