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Moisture content-affected electrokinetic remediation of Cr(VI)-contaminated clay by a hydrocalumite barrier

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Moisture content-affected electrokinetic remediation of Cr(VI)-contaminated clay by a hydrocalumite barrier. / Xu, Yunfeng; Xu, Xianjiang; Hou, Hetian; Zhang, JIa; Zhang, Dayi; Qian, Guangren.

In: Environmental Science and Pollution Research, Vol. 23, 04.2016, p. 6517-6523.

Research output: Contribution to journalJournal article

Harvard

Xu, Y, Xu, X, Hou, H, Zhang, JI, Zhang, D & Qian, G 2016, 'Moisture content-affected electrokinetic remediation of Cr(VI)-contaminated clay by a hydrocalumite barrier', Environmental Science and Pollution Research, vol. 23, pp. 6517-6523. https://doi.org/10.1007/s11356-015-5685-y

APA

Xu, Y., Xu, X., Hou, H., Zhang, JI., Zhang, D., & Qian, G. (2016). Moisture content-affected electrokinetic remediation of Cr(VI)-contaminated clay by a hydrocalumite barrier. Environmental Science and Pollution Research, 23, 6517-6523. https://doi.org/10.1007/s11356-015-5685-y

Vancouver

Xu Y, Xu X, Hou H, Zhang JI, Zhang D, Qian G. Moisture content-affected electrokinetic remediation of Cr(VI)-contaminated clay by a hydrocalumite barrier. Environmental Science and Pollution Research. 2016 Apr;23:6517-6523. https://doi.org/10.1007/s11356-015-5685-y

Author

Xu, Yunfeng ; Xu, Xianjiang ; Hou, Hetian ; Zhang, JIa ; Zhang, Dayi ; Qian, Guangren. / Moisture content-affected electrokinetic remediation of Cr(VI)-contaminated clay by a hydrocalumite barrier. In: Environmental Science and Pollution Research. 2016 ; Vol. 23. pp. 6517-6523.

Bibtex

@article{5c113d20f0284a808ed820f369942d74,
title = "Moisture content-affected electrokinetic remediation of Cr(VI)-contaminated clay by a hydrocalumite barrier",
abstract = "An electrokinetic–permeable reaction barrier (EKPRB) system was introduced in this study with hydrocalumite as the barrier material. The combined system effectively remediated the Cr(VI)-contaminated clay after a 72-h treatment, and the Cr(VI) removal efficiency increased with theinitial soil moisture content. Further evidence was found that the changing soil pH value and current density were highly associated with the initial moisture content, showing its importantroles in the Cr(VI) removal process. Additionally, the total Cr removal efficiency was much lower than that of Cr(VI) owing to the partial conversion of Cr(VI) to Cr(III) in the electrokinetic remediation process. Under high soil moisture conditions (40 %), the removal efficiency of Cr(VI) and total Cr was 96.6 and 67.3 %, respectively. Further analysis also revealed the new mineral phase, chromate hydrocalumite, for Cr fixation in the hydrocalumite barrier, which was significantly affected by the initial soil moisture content. Our results showed that the EK-PRB system with a hydrocalumite barrier is highly promising with great potential for the effective remediation of Cr(VI)-contaminated clay and engineering implementation.",
keywords = "Cr(VI)-contaminated clay, Electrokinetic, Permeable reaction barrier (PRB), Hydrocalumite, Moisture content",
author = "Yunfeng Xu and Xianjiang Xu and Hetian Hou and JIa Zhang and Dayi Zhang and Guangren Qian",
year = "2016",
month = apr
doi = "10.1007/s11356-015-5685-y",
language = "English",
volume = "23",
pages = "6517--6523",
journal = "Environmental Science and Pollution Research",
issn = "0944-1344",
publisher = "Springer Science + Business Media",

}

RIS

TY - JOUR

T1 - Moisture content-affected electrokinetic remediation of Cr(VI)-contaminated clay by a hydrocalumite barrier

AU - Xu, Yunfeng

AU - Xu, Xianjiang

AU - Hou, Hetian

AU - Zhang, JIa

AU - Zhang, Dayi

AU - Qian, Guangren

PY - 2016/4

Y1 - 2016/4

N2 - An electrokinetic–permeable reaction barrier (EKPRB) system was introduced in this study with hydrocalumite as the barrier material. The combined system effectively remediated the Cr(VI)-contaminated clay after a 72-h treatment, and the Cr(VI) removal efficiency increased with theinitial soil moisture content. Further evidence was found that the changing soil pH value and current density were highly associated with the initial moisture content, showing its importantroles in the Cr(VI) removal process. Additionally, the total Cr removal efficiency was much lower than that of Cr(VI) owing to the partial conversion of Cr(VI) to Cr(III) in the electrokinetic remediation process. Under high soil moisture conditions (40 %), the removal efficiency of Cr(VI) and total Cr was 96.6 and 67.3 %, respectively. Further analysis also revealed the new mineral phase, chromate hydrocalumite, for Cr fixation in the hydrocalumite barrier, which was significantly affected by the initial soil moisture content. Our results showed that the EK-PRB system with a hydrocalumite barrier is highly promising with great potential for the effective remediation of Cr(VI)-contaminated clay and engineering implementation.

AB - An electrokinetic–permeable reaction barrier (EKPRB) system was introduced in this study with hydrocalumite as the barrier material. The combined system effectively remediated the Cr(VI)-contaminated clay after a 72-h treatment, and the Cr(VI) removal efficiency increased with theinitial soil moisture content. Further evidence was found that the changing soil pH value and current density were highly associated with the initial moisture content, showing its importantroles in the Cr(VI) removal process. Additionally, the total Cr removal efficiency was much lower than that of Cr(VI) owing to the partial conversion of Cr(VI) to Cr(III) in the electrokinetic remediation process. Under high soil moisture conditions (40 %), the removal efficiency of Cr(VI) and total Cr was 96.6 and 67.3 %, respectively. Further analysis also revealed the new mineral phase, chromate hydrocalumite, for Cr fixation in the hydrocalumite barrier, which was significantly affected by the initial soil moisture content. Our results showed that the EK-PRB system with a hydrocalumite barrier is highly promising with great potential for the effective remediation of Cr(VI)-contaminated clay and engineering implementation.

KW - Cr(VI)-contaminated clay

KW - Electrokinetic

KW - Permeable reaction barrier (PRB)

KW - Hydrocalumite

KW - Moisture content

U2 - 10.1007/s11356-015-5685-y

DO - 10.1007/s11356-015-5685-y

M3 - Journal article

VL - 23

SP - 6517

EP - 6523

JO - Environmental Science and Pollution Research

JF - Environmental Science and Pollution Research

SN - 0944-1344

ER -