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Type: Artigo
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
Fotocatálise heterogênea
Country: Alemanha
Editor: Springer
Rights: Aberto
Identifier DOI: 10.1590/0104-6632.20190362s20180280
Date Issue: 2019
Appears in Collections:FEQ - Artigos e Outros Documentos

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