Solubility and sorption properties of some phosphate fertilizer components on soils

Phosphate rock (Pho-ore) is the starting raw material used in manufacturing of most phosphate products. This material contains phosphorous, natural uranium, thorium potassium radionuclide and other trace elements. Single super phosphate powder (SSPho-P), single super phosphate granules (SSPho-G), an...

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Bibliographic Details
Published in:Journal of radioanalytical and nuclear chemistry 2010-06, Vol.284 (3), p.653-658
Main Authors: Kamel, N. H. M., Hegazy, W. S., Navratil, J. D.
Format: Article
Language:English
Subjects:
Aluminum
Chemistry
Chemistry and Materials Science
Diagnostic Radiology
Fertilizer industry
Fertilizers
Fertilizing
Hadrons
Heavy Ions
Inorganic Chemistry
Iron
Nuclear Chemistry
Nuclear Physics
Phosphate industry
Phosphate minerals
Phosphate rock
Phosphates
Physical Chemistry
Soils
Sorption
Uranium
Wastes
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Summary:Phosphate rock (Pho-ore) is the starting raw material used in manufacturing of most phosphate products. This material contains phosphorous, natural uranium, thorium potassium radionuclide and other trace elements. Single super phosphate powder (SSPho-P), single super phosphate granules (SSPho-G), and triple super phosphate (TSPho) are the common phosphate products produced along with phosphogypsym (CaSO 4 ) as a waste product. Since these materials are industrially manufactured by the reaction of the phosphate ore with phosphoric and sulphuric acids, these products and the waste product are extremely acidic. Pho-ore, SSPho-P, SSPho-G, TSPho and CaSO 4 samples were used in our study. Chemical analyses showed that these phosphate samples contain phosphorous, iron, aluminum ions and traces of uranium ions. Accumulation of the fertilizers on soils usually transfers some of these ions from the fertilizer materials to the soil/water interfaces. The migration of uranium U(VI), P, Al and Fe in subsurface soils was found to be strongly influenced by the sorption/desorption reaction at the solid/water interfaces. Thus, dissolution of these ions in soil/water phases is very important. Speciation of U(VI), P, Al and Fe in soil/water phases were calculated using a geochemical code (MINTEQA2). This study was conducted to determine sorption properties and the surface electrical properties of these ions at the soil samples.
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-010-0535-3