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Title: Rapid removal of chloroform, carbon tetrachloride and trichloroethylene in water by aluminum-iron alloy particles
Authors: Xu, Jie
Pu, Yuan
Yang, Xiao Jin
Wan, Pingyu
Wang, Rong
Song, Peng
Fisher, Adrian
Keywords: Engineering::Civil engineering
Issue Date: 2017
Source: 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
Journal: Environmental Technology
Abstract: 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.
ISSN: 0959-3330
DOI: 10.1080/09593330.2017.1369577
Rights: © 2017 Informa UK Limited, trading as Taylor & Francis Group. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:CEE Journal Articles

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