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ISSN : 2456-8643

Title:
SYNTHESIS OF APATITIC NANOFERTILIZER FOR SUSTAINABILITY OF NATURAL PHOSPHATE ROCK

Authors:
Nimbona Guillaume* , Yaya Mahamat Idriss and Ech-Chahad Abdella , Morocco

Abstract:
In this study, we focused our interest on the synthesis of a porous nanofertilizer having an apatitic structure from a raw natural phosphate in alkaline medium. To obtain this nanofertilizer type, the natural phosphate rock initially enriched by sieving, was submitted to chemical extraction in presence of an alkaline salt as a digesting agent. The obtained apatite was treated with a cationic surfactant in order to improve the porosity of the final product. The results of analyzes obtained by combining X-ray diffraction technique, B.E.T. measurements and TFIR infrared spectroscopy clearly showed that the obtained product was a nanoporous apatite. The apatite obtained by this combined process would be an important intermediate for the manufacturing of other various products of phosphate derivatives. It should be noted that this process is very effective to remove the elements with an acidic valence such as silica, organic carbon, chromium VI and vanadium V. On the other hand, Titanium and Yttrium, which have amphoteric valences, remain with Apatite in amorphous form and are thus reactive. The elements with a basic valence are difficult to remove by this process (Mg, Sr, Ca, Cd, Zn, Cu, Ce). The metals belonging to the actinides group, in particular uranium, areremoved at a rate of 40%

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