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ENHANCED REMEDIATION OF ARSENIC AND CHROMIUM CO-CONTAMINATED SOIL BY ELETROKINETIC-PERMEABLE REACTIVE BARRIERS WITH DIFFERENT REAGENTS
Xu, Y., J. Li, W. Xia, Y. Sun, G. Qian, and J. Zhang.
Environmental Science and Pollution Research 26(4):3392-3403(2019)
Filed Under: Research
Filed Under: Research
The effects of different reagents on an electrokinetic-permeable reactive barrier (EK-PRB) system were investigated for remediation of As and Cr co-contaminated soil. Reductants (ascorbic acid, sodium citrate) and a chelating agent (EDTA-2Na) were used to pretreat contaminated soil. The PRB contained CaAl-layered double hydroxide (CaAl-LDH) as reactive material, which captured As and Cr efficiently after EK-PRB after system startup, resulting in maximal fixed amounts of 126.5 mg/kg (As) and 1507.6 mg/kg (Cr). XRD and FTIR analyses of LDH indicated that As was mainly adsorbed on the surface of LDH, whereas Cr was intercalated into the LDH interlayer.
Environmental Science and Pollution Research 26(4):3392-3403(2019)
Filed Under: Research
Filed Under: Research
The effects of different reagents on an electrokinetic-permeable reactive barrier (EK-PRB) system were investigated for remediation of As and Cr co-contaminated soil. Reductants (ascorbic acid, sodium citrate) and a chelating agent (EDTA-2Na) were used to pretreat contaminated soil. The PRB contained CaAl-layered double hydroxide (CaAl-LDH) as reactive material, which captured As and Cr efficiently after EK-PRB after system startup, resulting in maximal fixed amounts of 126.5 mg/kg (As) and 1507.6 mg/kg (Cr). XRD and FTIR analyses of LDH indicated that As was mainly adsorbed on the surface of LDH, whereas Cr was intercalated into the LDH interlayer.
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