Abstract
A series of dodecyl sulfate (DS-) intercalated Zn/Fe layered double hydroxides (DS-Zn/Fe-LDHs) were prepared by co-precipitation method from the electroplating wastewater containing high concentration of zinc (Zn2+). In addition, the influences of their charge density on the interlayer structure of LDHs were investigated by XRD and FT-IR. The removal rate of Zn2+ in the electroplating wastewater was reached 99.9%. The charge density decreased with the increasing of the ratio of Zn/Fe. The results showed that with the increase of the charge density, the interlamellar spacing of organic-LDH increased. The synthesis product was applied in the sorption of organic contaminant ( nitrobenzene ) and the sorption mechanism was partition. The synthetic DS-Zn/Fe LDHs were good sorbents for organic contaminant.
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