Record Display for the EPA National Library Catalog


Main Title Movement of Phosphorus in Soil.
Author Enfield, C. G. ; Kerr, R. S. ; Ellis, Jr, R. ;
CORP Author Robert S. Kerr Environmental Research Lab., Ada, OK. ;Kansas State Univ., Manhattan.
Year Published 1984
Report Number EPA-600/D-84-091;
Stock Number PB84-177922
Additional Subjects Phosphorus ; Soil water ; Soil chemistry ; Sorption ; Chemical reactions ; Precipitation(Chemistry) ; Iron ; Aluminum ; Calcium ; Mathematical models ; Reaction kinetics ; Path of pollutants
Library Call Number Additional Info Location Last
NTIS  PB84-177922 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 38p
The disappearance of phosphate from soil solution results from a fast initial sorption reaction followed by a much slower transformation of phosphate to amorphous and crystalline precipitates of iron, aluminum, and calcium. The kinetics of the transformation have been determined at a phenomenological level and often shown to follow Elovich or first-order equations. Kinetic models are applied to laboratory data to describe step response of phosphorus and quasi-steady state response of phosphorus in soil columns. Results indicate a first-order kinetic equation gives an adequate description of phosphorus movement in soil columns when the water velocity is known.