Simultaneous removal of Cr(VI) and orange G6 by polyaniline/attapulgite supported nano zero-valent iron activate persulfate

doi:10.5004/dwt.2021.26518

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	Simultaneous removal of Cr(VI) and orange G6 by polyaniline/attapulgite supported nano zero-valent iron activate persulfate
	Xu, Hui; Tian, Lei; Zhang, Yajuan; Chen, Ming Zhang; Jiang, Xudong; Tian, Weiguo; Chen, Yong
刊名	DESALINATION AND WATER TREATMENT
	2021-01
卷号	209 页码:353-366
关键词	Nano zero-valent iron Persulfate Simultaneous removal Orange G6 Cr(VI)
ISSN号	1944-3994
DOI	10.5004/dwt.2021.26518
英文摘要	In this paper, the polyaniline/attapulgite composite supported nano zero-valent iron (nZVI/PANI/ APT) composites were synthesized by one-step oxidation using Fe3+ as oxidant and iron source. nZVI/PANI/APT was used as a catalyst to activate persulfate (Ps) for the simultaneous removal of Cr(VI) and orange G6 (OG6) from aqueous solutions. The main factors (different composite materials, pH value, Ps concentration, etc.) affecting the removal performance of Cr(VI) and OG6 were evaluated as well. The experimental results revealed that the nZVI/PANI/APT composites can effectively remove Cr(VI) and OG6 simultaneously at a relatively low Ps concentration, the removal efficiencies of Cr(VI) and OG6 were 99.7% and 99.4% after 60 min, respectively. PANI/APT as the supporter matrix could decrease the aggregation of nZVI and increase its reactivity. A good synergistic effect between Cr(VI) reduction and OG6 oxidation was achieved by nZVI/PANI/APT combined Ps system. nZVI not only can be as a reductant for removal Cr(VI) and OG6 but also play as a catalyst to activate Ps and generate radicals for the degradation OG6. The presence of persulfate could not significantly decline nZVI reactivity for Cr( VI) reduction but remarkably promote OG6 oxidation. Moreover, kinetic and thermodynamic analyses were used to study the removal process, and the possible removal mechanism of Cr(VI) and OG6 was discussed by using the UV-Vis spectrum and liquid chromatography-mass spectrometry techniques. The nZVI/PANI/APT-persulfate heterogeneous Fenton system combines the nZVI reduction with the Fenton-like oxidation, which can be used for the treatment of industrial wastewater containing heavy metal ions and organic dyes.
WOS研究方向	Engineering ; Water Resources
语种	英语
出版者	DESALINATION PUBL
WOS记录号	WOS:000651052700033
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148689]
专题	石油化工学院
作者单位	Lanzhou Univ Technol, Coll Petrochem Technol, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Xu, Hui,Tian, Lei,Zhang, Yajuan,et al. Simultaneous removal of Cr(VI) and orange G6 by polyaniline/attapulgite supported nano zero-valent iron activate persulfate[J]. DESALINATION AND WATER TREATMENT,2021,209:353-366.
APA	Xu, Hui.,Tian, Lei.,Zhang, Yajuan.,Chen, Ming Zhang.,Jiang, Xudong.,...&Chen, Yong.(2021).Simultaneous removal of Cr(VI) and orange G6 by polyaniline/attapulgite supported nano zero-valent iron activate persulfate.DESALINATION AND WATER TREATMENT,209,353-366.
MLA	Xu, Hui,et al."Simultaneous removal of Cr(VI) and orange G6 by polyaniline/attapulgite supported nano zero-valent iron activate persulfate".DESALINATION AND WATER TREATMENT 209(2021):353-366.