Papers

Peer-reviewed
2014

Adsorption of Cu(II), Pb(II) by Mg-Al Layered Double Hydroxides (LDHs): Intercalated with the Chelating Agents EDTA and EDDS

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
  • Shuang Zhang
  • ,
  • Naoki Kano
  • ,
  • Hiroshi Imaizumi

Volume
47
Number
4
First page
324
Last page
328
Language
English
Publishing type
Research paper (scientific journal)
DOI
10.1252/jcej.13we210
Publisher
SOC CHEMICAL ENG JAPAN

The hydrotalcite-like compound [Mg2Al(OH)(6)]NO3 center dot nH(2)O (shorted as MgAl-NO3) was intercalated with the chelating agent ethylenediaminetetraacetic acid (EDTA) and N,N'-1,2-ethanediylbis-1-aspartic acid (EDDS) by anion exchange to uptake heavy metal ions (Cu2+ , Pb2+) from aqueous solutions. These layered double hydroxides (LDHs) synthesized in this work were used to adsorb Cu2+ and Pb2+. The amount of Cu2+ or Pb2+ adsorbed at different pH, temperature, and the dosage of adsorbent was determined by atomic absorption spectrometry (AAS). The structure, the composition and the surface properties of precursor-LDHs and intercalated-LDHs (intercalated with the chelating agents) were characterized by chemical analysis, Fourier transform infrared spectroscopy (FT-IR), powder X-ray diffraction (XRD) and a physical adsorption analyzer. Comparative experiments were carried out with commercially available LDH adsorbent (i.e., Kyowa DHT-4A). The adsorption behaviors of the MgAl-LDHs for Cu2+ and Pb2+ in aqueous were investigated by applying the adsorption results to the Freundlich isotherms model, and the data were well fitted by the model. The results suggested that MgAl-LDHs synthesized in this work could be suitable as sorbent materials for the adsorption and removal of heavy metal ions from aqueous solutions.

Link information
DOI
https://doi.org/10.1252/jcej.13we210
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000335828800006&DestApp=WOS_CPL
ID information
  • DOI : 10.1252/jcej.13we210
  • ISSN : 0021-9592
  • Web of Science ID : WOS:000335828800006

Export
BibTeX RIS