Layered double hydroxides as adsorbents and carriers of the herbicide (4-chloro-2-methylphenoxy)acetic acid (MCPA): Systems Mg–Al, Mg–Fe and Mg–Al–Fe
作者： F. Bruna , R. Celis , I. Pavlovic , C. Barriga , J. Cornejo
DOI: 10.1016/J.JHAZMAT.2009.03.038
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摘要: Abstract Hydrotalcite-like compounds [Mg3Al(OH)8]Cl·4H2O; [Mg3Fe(OH)8]Cl·4H2O; [Mg3Al0.5Fe0.5(OH)8]Cl·4H2O (LDHs) and calcined product of [Mg3Al(OH)8]Cl·4H2O, Mg3AlO4.5 (HT500), were studied as potential adsorbents the herbicide MCPA [(4-chloro-2-methylphenoxy)acetic acid] a function pH, contact time pesticide concentration, also support for slow release this pesticide, with aim to reduce hazardous effects that it can pose environment. The information obtained in adsorption study was used preparation LDH–MCPA complexes. results showed high rapid on well formulations based LDHs HT500 supports displayed controlled properties reduced leaching soil columns compared standard commercial formulation. Thereby, we conclude employed be not only remove from aqueous solutions, but highly mobile herbicide, thus controlling its immediate availability leaching.
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