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|Title:||Characterization-performance of Zno and ZnO/ZnFe2O4 catalyst using artificial and solar ligth for mercury (II) reduction|
|Author:||Coelho, Ana L. S.|
de Almeida Neto, Ambrosio F.
Ivashita, Flavio F.
Lenzi, Giane G.
Jorge, Luiz M. de M.
dos Santos, Onelia A. A.
|Abstract:||This study describes the application of ZnO commercial oxide and ZnO/ZnFe2O4 mixed oxides to reduce the mercury ion (Hg2+) in the aqueous phase. The catalysts synthesized were characterized by thermogravimetric analysis, adsorption and desorption of N-2, scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, photoacoustic spectroscopy and Mossbauer spectroscopy. The heterogeneous photocatalysis process was studied in synthetic effluent treatment containing mercury chloride (HgCl2) in a batch and solar reactor. The results indicated that commercial ZnO catalyst totally reduced the Hg (II), in all conditions and reaction systems studied. On the other hand, for the mixed oxides (ZnO/ZnFe2O4), there was a decrease in the reduction efficiency in the batch reactor, indicating no ability to reduce Hg(II) in the presence of sunlight|
|Subject:||Óxido de zinco|
|Appears in Collections:||FEQ - Artigos e Outros Documentos|
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