Layered Double Hydroxides as Hosting Matrices for Storage and Slow Release of Phosphate Analyzed by Stirred-Flow Method

The objective of this work was to synthesize and characterize Layered Double Hydroxides (MgAl-LDHs, MgFe-LDHs, and MgAlFe-LDHs) containing phosphate anions and study P release kinetics was conducted with the prepared materials. The release kinetics tests were performed in water by the stirred-flow method to verify the P release profile from LDHs materials. Results showed LDHs have similar characteristics to those of reactive sources of P, such as thermophosphates. The LDHs presented gradual P release and the LDH prepared with the molar ratio of cations Mg:Al = 2:1 showed a more sustained profile of P release compared to other produced materials. Thus, the chemical and structural characteristics of the LDHs make them potential materials for the use and storage of slow P release fertilizer.

Bibliographic Details

Main Authors:	Benício,Luíz Paulo Figueredo, Eulálio,Denise, Guimarães,Luciano de Moura, Pinto,Frederico Garcia, Costa,Liovando Marciano da, Tronto,Jairo
Format:	Digital revista
Language:	English
Published:	ABM, ABC, ABPol 2018
Online Access:	http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392018000600205
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