Nutrient release by a Brazilian sedimentary zeolite.

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Author(s): MONTE, M. B. M.; MIDDEA, A.; PAIVA, P. R. P.; BERNARDI, A. C. de C.; REZENDE, N. G. A. M.; BAPTISTA-FILHO, M; SILVA, M. G.; VARGAS, H.; AMORIM, H. S.; SOUZA BARROS, F. de

Summary: This report describes the characterization of a sedimentary occurrence from the Parnaíba Basin, Brazil, containing the zeolite stilbite intertwined with smectitic clay mineral. The head samples from different sites present a wide content range of the zeolitic phase - 15% to 50%. The use of simple separation techniques - conventional gravitic treatments - yields concentrates containing about 67% of the zeolitic component. Assays with the amendments of these concentrates with plant nutrients yield release rates matching those reported for similar commercial products.

Publication year: 2009

Types of publication: Journal article

Unit: Embrapa Southeastern Livestock

Keywords: Nutrient attachment, Parnaíba Basin, Plant nutrients, Release, Sedimentary zeolite

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