The study of Cu/Fe-doped Al-MCM-41 to degrade Rhodamine B

Textile wastewater has been recognized as one of the most difficult to treat environmental problems. Aiming to acquire an excellent treatment effect that could meet the stringent discharge regulations, a series of Cu- and Fe-doped Al-MCM-41 heterogeneous Fenton catalysts with different metal content...

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Autores principales:	Shunyi Li, Shaohua Wang, Qiang Chen, Suyu Jiang, Shaohui Sun
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	catalytic degradation copper oxide doping h2o2 iron oxide mcm-41 Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/8dc3a80fcf634acd987a68a916029a21
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spelling	oai:doaj.org-article:8dc3a80fcf634acd987a68a916029a212021-11-06T10:56:07ZThe study of Cu/Fe-doped Al-MCM-41 to degrade Rhodamine B0273-12231996-973210.2166/wst.2021.090https://doaj.org/article/8dc3a80fcf634acd987a68a916029a212021-04-01T00:00:00Zhttp://wst.iwaponline.com/content/83/8/1878https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Textile wastewater has been recognized as one of the most difficult to treat environmental problems. Aiming to acquire an excellent treatment effect that could meet the stringent discharge regulations, a series of Cu- and Fe-doped Al-MCM-41 heterogeneous Fenton catalysts with different metal contents (1.21–3.45 wt%) were successfully synthesized by co-precipitation method to degrade Rhodamine B. Their physicochemical properties were analysed by X-ray diffraction, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, nitrogen physisorption and scanning electron microscopy. The incorporation of metal did not alter MCM-41's mesostructure, but increasing the contents of metal would decrease the order of MCM-41s’ structure. The effects of temperature, pH, H2O2 dosage, dye concentration and the dosage of catalysts on Rhodamine B degradation were also investigated. It was found that M2 with 2.71 wt% of active metals performed best on Rhodamine B degradation. For the high concentration of Rhodamine B (400 mg/L), the decolorization efficiency could reach 96.0% using only 40 mM H2O2 within 50 min at 60 °C. Further adding 40 mM of H2O2, the chemical oxygen demand removal reached 75.1% after 100 min. M2 showed excellent stability and could be reused at least three times without any obvious deterioration in catalytic activity. M2 fitted well with the Freundlich isotherms and the first-order rate model. HIGHLIGHTS A series of Cu- and Fe-doped Al-MCM-41 heterogeneous catalysts were synthesized to degrade RhB.; The structure of MCM-41 was preserved.; Catalysts had efficient and stable treatment performance.; The adsorption model and the reaction kinetic model were further studied.; The conditions of the RhB degradation reaction were optimized.;Shunyi LiShaohua WangQiang ChenSuyu JiangShaohui SunIWA Publishingarticlecatalytic degradationcopper oxidedopingh2o2iron oxidemcm-41Environmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 83, Iss 8, Pp 1878-1892 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	catalytic degradation copper oxide doping h2o2 iron oxide mcm-41 Environmental technology. Sanitary engineering TD1-1066
spellingShingle	catalytic degradation copper oxide doping h2o2 iron oxide mcm-41 Environmental technology. Sanitary engineering TD1-1066 Shunyi Li Shaohua Wang Qiang Chen Suyu Jiang Shaohui Sun The study of Cu/Fe-doped Al-MCM-41 to degrade Rhodamine B
description	Textile wastewater has been recognized as one of the most difficult to treat environmental problems. Aiming to acquire an excellent treatment effect that could meet the stringent discharge regulations, a series of Cu- and Fe-doped Al-MCM-41 heterogeneous Fenton catalysts with different metal contents (1.21–3.45 wt%) were successfully synthesized by co-precipitation method to degrade Rhodamine B. Their physicochemical properties were analysed by X-ray diffraction, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, nitrogen physisorption and scanning electron microscopy. The incorporation of metal did not alter MCM-41's mesostructure, but increasing the contents of metal would decrease the order of MCM-41s’ structure. The effects of temperature, pH, H2O2 dosage, dye concentration and the dosage of catalysts on Rhodamine B degradation were also investigated. It was found that M2 with 2.71 wt% of active metals performed best on Rhodamine B degradation. For the high concentration of Rhodamine B (400 mg/L), the decolorization efficiency could reach 96.0% using only 40 mM H2O2 within 50 min at 60 °C. Further adding 40 mM of H2O2, the chemical oxygen demand removal reached 75.1% after 100 min. M2 showed excellent stability and could be reused at least three times without any obvious deterioration in catalytic activity. M2 fitted well with the Freundlich isotherms and the first-order rate model. HIGHLIGHTS A series of Cu- and Fe-doped Al-MCM-41 heterogeneous catalysts were synthesized to degrade RhB.; The structure of MCM-41 was preserved.; Catalysts had efficient and stable treatment performance.; The adsorption model and the reaction kinetic model were further studied.; The conditions of the RhB degradation reaction were optimized.;
format	article
author	Shunyi Li Shaohua Wang Qiang Chen Suyu Jiang Shaohui Sun
author_facet	Shunyi Li Shaohua Wang Qiang Chen Suyu Jiang Shaohui Sun
author_sort	Shunyi Li
title	The study of Cu/Fe-doped Al-MCM-41 to degrade Rhodamine B
title_short	The study of Cu/Fe-doped Al-MCM-41 to degrade Rhodamine B
title_full	The study of Cu/Fe-doped Al-MCM-41 to degrade Rhodamine B
title_fullStr	The study of Cu/Fe-doped Al-MCM-41 to degrade Rhodamine B
title_full_unstemmed	The study of Cu/Fe-doped Al-MCM-41 to degrade Rhodamine B
title_sort	study of cu/fe-doped al-mcm-41 to degrade rhodamine b
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/8dc3a80fcf634acd987a68a916029a21
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The study of Cu/Fe-doped Al-MCM-41 to degrade Rhodamine B

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