Simultaneous Complexation of Organic Compounds and Heavy Metals by a Modified Cyclodextrin

Xiaojiang Wang, Mark L. Brusseau

Research output: Contribution to journalArticle

114 Scopus citations

Abstract

The cleanup of contaminated soil and groundwater at hazardous waste sites has become a major focus of research and policy debate. A major factor complicating the cleanup of many sites is the cooccurrence of organic compounds and heavy metals, the so-called mixed wastes. We investigated the ability of a modified cyclodextrin to simultaneously complex low-polarity organic compounds and heavy metals. The results of the experiments showed that carboxymethyl-β-cyclodextrin could simultaneously increase the apparent aqueous solubilities of the selected organic compounds (anthracene, trichlorobenzene, biphenyl, and DDT) and complex with Cd2+. This complexation was not significantly affected by changes in pH or by the presence of relatively high concentrations of Ca2+. It is possible that this reagent can be used successfully to remediate hazardous waste sites contaminated by mixed wastes.

Original languageEnglish (US)
Pages (from-to)2632-2635
Number of pages4
JournalEnvironmental Science and Technology
Volume29
Issue number10
DOIs
StatePublished - Oct 1995

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry

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