Nong ye ke xue yu ji shu, 2010, Vol.4 (4), p.83-87
2010
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- Autor(en) / Beteiligte
- Titel
- Effect of Agricultural Use of the Mixture Phosphogypsum/Natural Phosphate on the Dynamics of Phosphor in Soil and the Plant
- Ist Teil von
- Nong ye ke xue yu ji shu, 2010, Vol.4 (4), p.83-87
- Erscheinungsjahr
- 2010
- Quelle
- EZB Electronic Journals Library
- Beschreibungen/Notizen
- The industrial production of the phosphoric acid is important and makes itself in a big number of countries. The by-product descended of this industry, residuary gypsum called phosphogypsum, poses a major environmental problem. The aim of this work is to identify and to value the potentialities of valorization of the by-product phosphogypsum produce in Morocco, for a use in the domain of agriculture. They can contain 1% to 6% of free acids. The idea is to use this acid to partially solubilize natural phosphate and to make the final product richer in phosphorus （about I0% of total P205 half soluble） and therefore more attractive on the agronomic and economic plan. For mixtures phosphogypsum/natural phosphate, a study of clarification is necessary, by varying the proportions of products, the humidities, mixing techniques, the ripening time to achieve a final interesting product. The dynamics of the phosphor in soil has been measured by the Olsen method and the one in the plant has been measured after drying in