Rapid removal of chloroform, carbon tetrachloride and trichloroethylene in water by aluminum-iron alloy particles

Water contamination with chlorinated hydrocarbons such as chloroform (CHCl3), carbon tetrachloride (CCl4) and trichloroethylene (TCE) is one of the major public health concerns. In this study, we explored the use of aluminum-iron alloys particles in millimeter scale for rapid removal of CHCl3, CCl4...

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Main Authors: Xu, Jie, Pu, Yuan, Yang, Xiao Jin, Wan, Pingyu, Wang, Rong, Song, Peng, Fisher, Adrian
Other Authors: School of Civil and Environmental Engineering
Format: Article
Language:English
Published: 2020
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Online Access:https://hdl.handle.net/10356/136795
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1367952020-01-29T03:56:56Z Rapid removal of chloroform, carbon tetrachloride and trichloroethylene in water by aluminum-iron alloy particles Xu, Jie Pu, Yuan Yang, Xiao Jin Wan, Pingyu Wang, Rong Song, Peng Fisher, Adrian School of Civil and Environmental Engineering Engineering::Civil engineering Chlorinated Hydrocarbons Disinfection Byproducts Water contamination with chlorinated hydrocarbons such as chloroform (CHCl3), carbon tetrachloride (CCl4) and trichloroethylene (TCE) is one of the major public health concerns. In this study, we explored the use of aluminum-iron alloys particles in millimeter scale for rapid removal of CHCl3, CCl4 and TCE from water. Three types of Al-Fe alloy particles containing 10, 20 and 58 wt% of Fe (termed as Al-Fe10, Al-Fe20 and Al-Fe58) were prepared and characterized by electrochemical polarization, X-ray diffraction and energy dispersive spectrometer. For concentrations of 30-180 μg/L CHCl3, CCl4 and TCE, a removal efficiency of 45-64% was achieved in a hydraulic contact time of less than 3 min through a column packed with 0.8-2 mm diameter of Al-Fe alloy particles. The concentration of Al and Fe ions released into water was less than 0.15 and 0.05 mg/L, respectively. Alloying Al with Fe enhances reactivity towards chlorinated hydrocarbons' degradation and the enhancement is likely the consequence of galvanic effects between different phases (Al, Fe and intermetallic Al-Fe compounds such as Al13Fe4, Fe3Al and FeAl2) and catalytic role of these intermetallic Al-Fe compounds. The results demonstrate that the use of Al-Fe alloy particles offers a viable and green option for chlorinated hydrocarbons' removal in water treatment. 2020-01-29T03:56:56Z 2020-01-29T03:56:56Z 2017 Journal Article Xu, J., Pu, Y., Yang, X. J., Wan, P., Wang, R., Song, P., & Fisher, A. (2018). Rapid removal of chloroform, carbon tetrachloride and trichloroethylene in water by aluminum–iron alloy particles. Environmental Technology, 39(22), 2882-2890. doi:10.1080/09593330.2017.1369577 0959-3330 https://hdl.handle.net/10356/136795 10.1080/09593330.2017.1369577 28820043 2-s2.0-85029405741 22 39 2882 2890 en Environmental Technology © 2017 Informa UK Limited, trading as Taylor & Francis Group. All rights reserved.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Engineering::Civil engineering
Chlorinated Hydrocarbons
Disinfection Byproducts
spellingShingle Engineering::Civil engineering
Chlorinated Hydrocarbons
Disinfection Byproducts
Xu, Jie
Pu, Yuan
Yang, Xiao Jin
Wan, Pingyu
Wang, Rong
Song, Peng
Fisher, Adrian
Rapid removal of chloroform, carbon tetrachloride and trichloroethylene in water by aluminum-iron alloy particles
description Water contamination with chlorinated hydrocarbons such as chloroform (CHCl3), carbon tetrachloride (CCl4) and trichloroethylene (TCE) is one of the major public health concerns. In this study, we explored the use of aluminum-iron alloys particles in millimeter scale for rapid removal of CHCl3, CCl4 and TCE from water. Three types of Al-Fe alloy particles containing 10, 20 and 58 wt% of Fe (termed as Al-Fe10, Al-Fe20 and Al-Fe58) were prepared and characterized by electrochemical polarization, X-ray diffraction and energy dispersive spectrometer. For concentrations of 30-180 μg/L CHCl3, CCl4 and TCE, a removal efficiency of 45-64% was achieved in a hydraulic contact time of less than 3 min through a column packed with 0.8-2 mm diameter of Al-Fe alloy particles. The concentration of Al and Fe ions released into water was less than 0.15 and 0.05 mg/L, respectively. Alloying Al with Fe enhances reactivity towards chlorinated hydrocarbons' degradation and the enhancement is likely the consequence of galvanic effects between different phases (Al, Fe and intermetallic Al-Fe compounds such as Al13Fe4, Fe3Al and FeAl2) and catalytic role of these intermetallic Al-Fe compounds. The results demonstrate that the use of Al-Fe alloy particles offers a viable and green option for chlorinated hydrocarbons' removal in water treatment.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Xu, Jie
Pu, Yuan
Yang, Xiao Jin
Wan, Pingyu
Wang, Rong
Song, Peng
Fisher, Adrian
format Article
author Xu, Jie
Pu, Yuan
Yang, Xiao Jin
Wan, Pingyu
Wang, Rong
Song, Peng
Fisher, Adrian
author_sort Xu, Jie
title Rapid removal of chloroform, carbon tetrachloride and trichloroethylene in water by aluminum-iron alloy particles
title_short Rapid removal of chloroform, carbon tetrachloride and trichloroethylene in water by aluminum-iron alloy particles
title_full Rapid removal of chloroform, carbon tetrachloride and trichloroethylene in water by aluminum-iron alloy particles
title_fullStr Rapid removal of chloroform, carbon tetrachloride and trichloroethylene in water by aluminum-iron alloy particles
title_full_unstemmed Rapid removal of chloroform, carbon tetrachloride and trichloroethylene in water by aluminum-iron alloy particles
title_sort rapid removal of chloroform, carbon tetrachloride and trichloroethylene in water by aluminum-iron alloy particles
publishDate 2020
url https://hdl.handle.net/10356/136795
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