Nutrient release by a Brazilian sedimentary zeolite

Anais da Academia Brasileira de Ciências

Marisa B.m. Monte²  Antonieta Middea²  Paulo R.p. Paiva²  Alberto C.c. Bernardi¹  Nélio G.a.m. Rezende¹  Milton Baptista-filho¹  Marcelo G. Silva¹  Helion Vargas¹  Helio S. Amorim¹  Fernando De Souza-barros¹ 

[1] ,Centro de Tecnologia MineralRio de Janeiro RJ ,Brasil

关键词: sedimentary zeolite;    Parnaíba Basin;    plant nutrients;    nutrient attachment and release;    zeólita sedimentar;    Bacia do Parnaíba;    fertilizantes;    minerais - captura e liberação de nutrientes;   

DOI  :  10.1590/S0001-37652009000400003

来源: SciELO

【 摘 要 】

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.

【 授权许可】

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