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Efficient degradation of trichloroethylene in water using persulfate activated by reduced graphene oxide-iron nanocomposite.
Environ Sci Pollut Res Int. 2015 Nov; 22(22):17876-85.ES

Abstract

Graphene oxide (GO) and nano-sized zero-valent iron-reduced graphene oxide (nZVI-rGO) composite were prepared. The GO and nZVI-rGO composite were characterized by transmission electron microscopy (TEM), Fourier transform infrared (FTIR), energy-dispersive spectroscopy (EDS), and Raman spectroscopy. The size of nZVI was about 6 nm as observed by TEM. The system of nZVI-rGO and persulfate (PS) was used for the degradation of trichloroethylene (TCE) in water, and showed 26.5% more efficiency as compared to nZVI/PS system. The different parameters were studied to determine the efficiency of nZVI-rGO to activate the PS system for the TCE degradation. By increasing the PS amount, TCE removal was also improved while no obvious effect was observed by varying the catalyst loading. Degradation was decreased as the TCE initial concentration was increased from 20 to 100 mg/L. Moreover, when initial solution pH was increased, efficiency deteriorated to 80%. Bicarbonate showed more negative effect on TCE removal among the solution matrix. To better understand the effects of radical species in the system, the scavenger tests were performed. The •SO4(-) and •O2(-) were predominant species responsible for TCE removal. The nZVI-rGO-activated PS process shows potential applications in remediation of highly toxic organic contaminants such as TCE present in the groundwater. Graphical abstract Persulfate activated by reduced graphene oxide and nano-sized zero-valent iron composite can be used for efficient degradation of trichloroethylene (TCE) in water.

Authors+Show Affiliations

State-Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China.State-Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China. State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai, 200237, China.State-Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China.State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai, 200237, China.State-Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China. yshxu@ecust.edu.cn.State-Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China. guoxuhong@ecust.edu.cn. Key Laboratory of Xinjiang Uygur Autonomous Region and Engineering Research Center of Xinjiang Bingtuan of Materials-Oriented Chemical Engineering, Shihezi University, Xinjiang, 832000, China. guoxuhong@ecust.edu.cn.

Pub Type(s)

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

Language

eng

PubMed ID

26162447

Citation

Ahmad, Ayyaz, et al. "Efficient Degradation of Trichloroethylene in Water Using Persulfate Activated By Reduced Graphene Oxide-iron Nanocomposite." Environmental Science and Pollution Research International, vol. 22, no. 22, 2015, pp. 17876-85.
Ahmad A, Gu X, Li L, et al. Efficient degradation of trichloroethylene in water using persulfate activated by reduced graphene oxide-iron nanocomposite. Environ Sci Pollut Res Int. 2015;22(22):17876-85.
Ahmad, A., Gu, X., Li, L., Lv, S., Xu, Y., & Guo, X. (2015). Efficient degradation of trichloroethylene in water using persulfate activated by reduced graphene oxide-iron nanocomposite. Environmental Science and Pollution Research International, 22(22), 17876-85. https://doi.org/10.1007/s11356-015-5034-1
Ahmad A, et al. Efficient Degradation of Trichloroethylene in Water Using Persulfate Activated By Reduced Graphene Oxide-iron Nanocomposite. Environ Sci Pollut Res Int. 2015;22(22):17876-85. PubMed PMID: 26162447.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Efficient degradation of trichloroethylene in water using persulfate activated by reduced graphene oxide-iron nanocomposite. AU - Ahmad,Ayyaz, AU - Gu,Xiaogang, AU - Li,Li, AU - Lv,Shuguang, AU - Xu,Yisheng, AU - Guo,Xuhong, Y1 - 2015/07/12/ PY - 2015/05/23/received PY - 2015/07/03/accepted PY - 2015/7/12/entrez PY - 2015/7/15/pubmed PY - 2016/7/2/medline KW - Iron KW - Persulfate KW - Reduced graphene oxide KW - Trichloroethylene degradation KW - Water treatment SP - 17876 EP - 85 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 22 IS - 22 N2 - Graphene oxide (GO) and nano-sized zero-valent iron-reduced graphene oxide (nZVI-rGO) composite were prepared. The GO and nZVI-rGO composite were characterized by transmission electron microscopy (TEM), Fourier transform infrared (FTIR), energy-dispersive spectroscopy (EDS), and Raman spectroscopy. The size of nZVI was about 6 nm as observed by TEM. The system of nZVI-rGO and persulfate (PS) was used for the degradation of trichloroethylene (TCE) in water, and showed 26.5% more efficiency as compared to nZVI/PS system. The different parameters were studied to determine the efficiency of nZVI-rGO to activate the PS system for the TCE degradation. By increasing the PS amount, TCE removal was also improved while no obvious effect was observed by varying the catalyst loading. Degradation was decreased as the TCE initial concentration was increased from 20 to 100 mg/L. Moreover, when initial solution pH was increased, efficiency deteriorated to 80%. Bicarbonate showed more negative effect on TCE removal among the solution matrix. To better understand the effects of radical species in the system, the scavenger tests were performed. The •SO4(-) and •O2(-) were predominant species responsible for TCE removal. The nZVI-rGO-activated PS process shows potential applications in remediation of highly toxic organic contaminants such as TCE present in the groundwater. Graphical abstract Persulfate activated by reduced graphene oxide and nano-sized zero-valent iron composite can be used for efficient degradation of trichloroethylene (TCE) in water. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/26162447/Efficient_degradation_of_trichloroethylene_in_water_using_persulfate_activated_by_reduced_graphene_oxide_iron_nanocomposite_ L2 - https://dx.doi.org/10.1007/s11356-015-5034-1 DB - PRIME DP - Unbound Medicine ER -