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Main Title Kinetic model for orthophosphate reactions in mineral soils /
Author Enfield, Carl George, ; Bledsoe., Bert E.
Other Authors
Author Title of a Work
Bledsoe, Bert E.
CORP Author Robert S. Kerr Environmental Research Lab., Ada, Okla.;National Environmental Research Center, Corvallis, Oreg.
Publisher National Environmental Research Center, Office of Research and Development, U.S. Environmental Protection Agency, For sale by the Supt. of Docs., U.S. Govt. Print. Off.
Year Published 1975
Report Number EPA/660-2-75-022; EPA-ROAP-21ASH-13
Stock Number PB-247 143
OCLC Number 01910284
Subjects Soils--Phosphorus content--Mathematical models ; Soils--Environmental aspects--Mathematical models
Additional Subjects Sewage treatment ; Phosphorus ; Soil chemistry ; Waste water ; Reaction kinetics ; Mathematical models ; Inorganic phosphates ; Iron ; Aluminum ; Calcium ; Solubility ; Concentration(Composition) ; Equilibrium flow ; Phosphorus inorganic acids ; Physical properties ; Chemical properties ; Tables(Data) ; Sewage irrigation ; Orthophosphates
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA 660-2-75-022 Headquarters Library/Washington,DC 12/23/2014
ELBD ARCHIVE EPA 660-2-75-022 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
EMBD  EPA/660/2-75/022 NRMRL/GWERD Library/Ada,OK 09/29/1995
NTIS  PB-247 143 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation vi, 133 pages : illustrations ; 27 cm.
The ability of a soil to remove wastewater phosphorus from solutions passing through the soil matrix is primarily related to the formation of relatively insoluble phosphate compounds of iron, aluminum, and calcium. Based on the solubility of these compounds, an estimate can be made of the minimum concentration of phosphorus which will be found at equilibrium in the soil solution. The kinetics of orthophosphorus sorption with 25 viable mineral soils were experimentally measured under laboratory conditions. Several kinetic models were evaluated as a means of describing phosphorus sorption by soil. A diffusion limited Langmuir sorption model best fit the experimental data.
"June 1975." "EPA/660-2-75-022." "ROAP 21-ASH, TASK 13; Program Element 1BB045." Report prepared by Robert S. Kerr Environmental Research Laboratory, Ada, Oklahoma. Includes bibliographical references (pages 38-47).