CHARACTERIZATION OF 2 FRIT CERAMIC MATERIALS IA LOW-COST FERTILIZERS

Two frit ceramic materials were prepared from minerals (phosphate and feldspar) and other low-cost materials (bones and glass cullet). These powders can be used in agriculture as fertilizers since they are able to release the nutrient elements at a low rare. The above materials w ere characterized by X-ray Diffraction, Photoluminescence Spectroscopy , Scanning Electron Microscopy and Inductively Coupled Plasma Atomic E mission Spectrometry. The dissolution kinetic of macro and micro nutri ents, components from frit materials, was also studied. (C) 1998 Elsev ier Science Limited. All rights reserved.