Development of LaxCa1-xMnO3 materials for Bezaktiv Blue removal in aqueous media

In this work, mixed oxides of LaxCa1-xMnO3 perovskite type (x = 0, 0.5 and 1.0) were synthesized through modified proteic method using collagen and calcination process at 700 °C/2 h in order to remove the commercial textile dye Bezaktiv Blue S-MAX from water. Oxides were characterized using X-ray di...

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Autores principales:	É. V. Nascimento, A. M. Garrido Pedrosa, M. J. B. Souza
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	adsorption bezaktiv blue modified proteic method perovskite oxide regeneration reuse Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/0dd65049c9084b868e9a9312d8c23402
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spelling	oai:doaj.org-article:0dd65049c9084b868e9a9312d8c234022021-11-06T11:07:50ZDevelopment of LaxCa1-xMnO3 materials for Bezaktiv Blue removal in aqueous media0273-12231996-973210.2166/wst.2021.174https://doaj.org/article/0dd65049c9084b868e9a9312d8c234022021-06-01T00:00:00Zhttp://wst.iwaponline.com/content/83/11/2793https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732In this work, mixed oxides of LaxCa1-xMnO3 perovskite type (x = 0, 0.5 and 1.0) were synthesized through modified proteic method using collagen and calcination process at 700 °C/2 h in order to remove the commercial textile dye Bezaktiv Blue S-MAX from water. Oxides were characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), N2 physisorption, scanning electron microscopy (SEM) and point of zero charge (PZC) techniques while the dye only by the first two techniques. The XRD showed that perovskite monophase was obtained for x = 0.5 and 1.0. However, for x = 0, the low crystalline perovskite phase was obtained in the midst of precursor oxides. FTIR showed the adsorption process did not damage the adsorbents structure. The successful obtained materials have meso and macroporous with slit or cavity shape, rough surface and particles with varying sizes. The pseudo-second-order model was the one that best fit the kinetic data. The process must occur through electrostatic surface interactions between the adsorbent surface and the dye molecule. For the equilibrium study, Langmuir isotherm is the most suitable when using LaMnO3 adsorbent, while Freundlich isotherm was better suited when used the other two materials. The adsorbents were termally regenerated and reused five times. The best performance was exhibited by LaMnO3. HIGHLIGHTS Successful preparation of LaxCa1-xMnO3 (x = 0.5 and 1.0) materials using low cost method.; Effective removal of Bezaktiv Blue dye using LaxCa1-xMnO3.; The LaMnO3 maintained your adsorptive capacity throughout regeneration cycles.; The La0.5Ca0.5MnO3 became a catalyst after the second regeneration and the CaMnO3 had its structure consolidated throughout regeneration cycles.; The materials pores contributed to adsorption process.;É. V. NascimentoA. M. Garrido PedrosaM. J. B. SouzaIWA Publishingarticleadsorptionbezaktiv bluemodified proteic methodperovskite oxideregenerationreuseEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 83, Iss 11, Pp 2793-2808 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	adsorption bezaktiv blue modified proteic method perovskite oxide regeneration reuse Environmental technology. Sanitary engineering TD1-1066
spellingShingle	adsorption bezaktiv blue modified proteic method perovskite oxide regeneration reuse Environmental technology. Sanitary engineering TD1-1066 É. V. Nascimento A. M. Garrido Pedrosa M. J. B. Souza Development of LaxCa1-xMnO3 materials for Bezaktiv Blue removal in aqueous media
description	In this work, mixed oxides of LaxCa1-xMnO3 perovskite type (x = 0, 0.5 and 1.0) were synthesized through modified proteic method using collagen and calcination process at 700 °C/2 h in order to remove the commercial textile dye Bezaktiv Blue S-MAX from water. Oxides were characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), N2 physisorption, scanning electron microscopy (SEM) and point of zero charge (PZC) techniques while the dye only by the first two techniques. The XRD showed that perovskite monophase was obtained for x = 0.5 and 1.0. However, for x = 0, the low crystalline perovskite phase was obtained in the midst of precursor oxides. FTIR showed the adsorption process did not damage the adsorbents structure. The successful obtained materials have meso and macroporous with slit or cavity shape, rough surface and particles with varying sizes. The pseudo-second-order model was the one that best fit the kinetic data. The process must occur through electrostatic surface interactions between the adsorbent surface and the dye molecule. For the equilibrium study, Langmuir isotherm is the most suitable when using LaMnO3 adsorbent, while Freundlich isotherm was better suited when used the other two materials. The adsorbents were termally regenerated and reused five times. The best performance was exhibited by LaMnO3. HIGHLIGHTS Successful preparation of LaxCa1-xMnO3 (x = 0.5 and 1.0) materials using low cost method.; Effective removal of Bezaktiv Blue dye using LaxCa1-xMnO3.; The LaMnO3 maintained your adsorptive capacity throughout regeneration cycles.; The La0.5Ca0.5MnO3 became a catalyst after the second regeneration and the CaMnO3 had its structure consolidated throughout regeneration cycles.; The materials pores contributed to adsorption process.;
format	article
author	É. V. Nascimento A. M. Garrido Pedrosa M. J. B. Souza
author_facet	É. V. Nascimento A. M. Garrido Pedrosa M. J. B. Souza
author_sort	É. V. Nascimento
title	Development of LaxCa1-xMnO3 materials for Bezaktiv Blue removal in aqueous media
title_short	Development of LaxCa1-xMnO3 materials for Bezaktiv Blue removal in aqueous media
title_full	Development of LaxCa1-xMnO3 materials for Bezaktiv Blue removal in aqueous media
title_fullStr	Development of LaxCa1-xMnO3 materials for Bezaktiv Blue removal in aqueous media
title_full_unstemmed	Development of LaxCa1-xMnO3 materials for Bezaktiv Blue removal in aqueous media
title_sort	development of laxca1-xmno3 materials for bezaktiv blue removal in aqueous media
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/0dd65049c9084b868e9a9312d8c23402
work_keys_str_mv	AT evnascimento developmentoflaxca1xmno3materialsforbezaktivblueremovalinaqueousmedia AT amgarridopedrosa developmentoflaxca1xmno3materialsforbezaktivblueremovalinaqueousmedia AT mjbsouza developmentoflaxca1xmno3materialsforbezaktivblueremovalinaqueousmedia
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Development of LaxCa1-xMnO3 materials for Bezaktiv Blue removal in aqueous media

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