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Physical and chemical study of lattice kaolinites and their interaction with orthophosphate Anais da ABC (AABC)
SILVA,MARCONDES SILVA E; LAGES,ANDERSON S.; SANTANA,GENILSON P..
ABSTRACT This study covers the evaluation of the structure and the capacity in adsorbing orthophosphate ions of kaolinites collected from sampling sites in Manaus (Brazil). The kaolinites were obtained using physical fractioning (sieving/siphoning) techniques and chemical treatment with HCl, H2SO4, H2O2 and KCl. The investigation of the kaolinite lattices involved the Hinckley and Plançon indexes determined from X-ray diffraction data, Fourier transformed infrared spectroscopy, scanning electron microscopy and Mössbauer spectroscopy. The absorption capacity of orthophosphate ions was calculated by Freundlich and Langergren isotherms. A transitional state was observed in the crystallographic structure from kaolinites because of the isomorphic substitution...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Freundlich; Isomorphic substitution; Langergren; Manaus; Mössbauer.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401391
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