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Enhanced ultrasound-assisted degradation of methyl orange and metronidazole by rectorite-supported nanoscale zero-valent iron.
Ultrason Sonochem. 2016 Jan; 28:62-68.US

Abstract

In this study, the rectorite-supported nanoscale zero-valent iron (nZVI/R) was synthesized through a reduction method. X-ray diffraction analysis showed the existence of the nZVI in the nZVI/R composite and X-ray photoelectron spectroscopy analysis indicated that the nZVI particles were partly oxidized into iron oxide. Scanning electron microscopy analysis revealed that the nZVI particles were highly dispersed on the surface of the rectorite. The specific surface area of the nZVI/R composite is 21.43 m(2)/g, which was higher than that of rectorite (4.30 m(2)/g) and nZVI (17.97 m(2)/g). In the presence of ultrasound (US), the degradation of methyl orange and metronidazole by the nZVI/R composite was over 93% and 97% within 20 min, respectively, which is much higher than that by the rectorite and the nZVI. The degradation ratio of methyl orange and metronidazole by the nZVI/R composite under US was 1.7 and 1.8 times as high as that by the nZVI/R composite without US, respectively. The mechanism of the enhanced degradation of methyl orange and metronidazole under US irradiation was studied. These results indicate that the US/nZVI/R process has great potential application value for treatment of dye wastewater and medicine wastewater.

Authors+Show Affiliations

School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, PR China; Hubei Provincial Collaborative Innovation Center for High Efficient Utilization of Vanadium Resources, Wuhan 430070, PR China.School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, PR China; Hubei Provincial Collaborative Innovation Center for High Efficient Utilization of Vanadium Resources, Wuhan 430070, PR China. Electronic address: gkzhang@whut.edu.cn.School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, PR China; Hubei Provincial Collaborative Innovation Center for High Efficient Utilization of Vanadium Resources, Wuhan 430070, PR China.School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, PR China; Hubei Provincial Collaborative Innovation Center for High Efficient Utilization of Vanadium Resources, Wuhan 430070, PR China.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

26384884

Citation

Yuan, Na, et al. "Enhanced Ultrasound-assisted Degradation of Methyl Orange and Metronidazole By Rectorite-supported Nanoscale Zero-valent Iron." Ultrasonics Sonochemistry, vol. 28, 2016, pp. 62-68.
Yuan N, Zhang G, Guo S, et al. Enhanced ultrasound-assisted degradation of methyl orange and metronidazole by rectorite-supported nanoscale zero-valent iron. Ultrason Sonochem. 2016;28:62-68.
Yuan, N., Zhang, G., Guo, S., & Wan, Z. (2016). Enhanced ultrasound-assisted degradation of methyl orange and metronidazole by rectorite-supported nanoscale zero-valent iron. Ultrasonics Sonochemistry, 28, 62-68. https://doi.org/10.1016/j.ultsonch.2015.06.029
Yuan N, et al. Enhanced Ultrasound-assisted Degradation of Methyl Orange and Metronidazole By Rectorite-supported Nanoscale Zero-valent Iron. Ultrason Sonochem. 2016;28:62-68. PubMed PMID: 26384884.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Enhanced ultrasound-assisted degradation of methyl orange and metronidazole by rectorite-supported nanoscale zero-valent iron. AU - Yuan,Na, AU - Zhang,Gaoke, AU - Guo,Sheng, AU - Wan,Zhen, Y1 - 2015/06/30/ PY - 2015/05/04/received PY - 2015/06/28/revised PY - 2015/06/29/accepted PY - 2015/9/20/entrez PY - 2015/9/20/pubmed PY - 2016/7/30/medline KW - Degradation KW - Nanoscale zero-valent iron KW - Rectorite KW - Ultrasound SP - 62 EP - 68 JF - Ultrasonics sonochemistry JO - Ultrason Sonochem VL - 28 N2 - In this study, the rectorite-supported nanoscale zero-valent iron (nZVI/R) was synthesized through a reduction method. X-ray diffraction analysis showed the existence of the nZVI in the nZVI/R composite and X-ray photoelectron spectroscopy analysis indicated that the nZVI particles were partly oxidized into iron oxide. Scanning electron microscopy analysis revealed that the nZVI particles were highly dispersed on the surface of the rectorite. The specific surface area of the nZVI/R composite is 21.43 m(2)/g, which was higher than that of rectorite (4.30 m(2)/g) and nZVI (17.97 m(2)/g). In the presence of ultrasound (US), the degradation of methyl orange and metronidazole by the nZVI/R composite was over 93% and 97% within 20 min, respectively, which is much higher than that by the rectorite and the nZVI. The degradation ratio of methyl orange and metronidazole by the nZVI/R composite under US was 1.7 and 1.8 times as high as that by the nZVI/R composite without US, respectively. The mechanism of the enhanced degradation of methyl orange and metronidazole under US irradiation was studied. These results indicate that the US/nZVI/R process has great potential application value for treatment of dye wastewater and medicine wastewater. SN - 1873-2828 UR - https://www.unboundmedicine.com/medline/citation/26384884/Enhanced_ultrasound_assisted_degradation_of_methyl_orange_and_metronidazole_by_rectorite_supported_nanoscale_zero_valent_iron_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1350-4177(15)00201-1 DB - PRIME DP - Unbound Medicine ER -