Sequestration of heavy metals from water with layered metal sulfides

Manolis J. Manos, Mercouri G. Kanatzidis

Research output: Contribution to journalArticle

84 Citations (Scopus)

Abstract

Heavy metal ion remediation properties of the layered sulfide material K2xMnxSn3-xS6(x=0.5-0.95) (KMS-1), which was shown to be an excellent sorbent for strontium ions was investigated. KMS-1 effectively removed mercury, lead, and cadmium from water with a capacity and selectivity that allowed their concentration to be reduced to well below the government allowed safe drinking levels. The tests were carried out with potable water having pH ≈ 6.5 and was intentionally contaminated with environmentally relevant (highly toxic) levels of mercury, lead, and cadmium. KMS-1 effectively reduced the concentration of all heavy metal ions down to their acceptable limits in a short period of time. The study revealed that the KMS-1 binds soft heavy elements by strong M-S bonding and is superior as heavy metal ion sorbent over known materials.

Original languageEnglish
Pages (from-to)4779-4784
Number of pages6
JournalChemistry - A European Journal
Volume15
Issue number19
DOIs
Publication statusPublished - May 4 2009

Keywords

  • Environmental remediation
  • Heavy metals
  • Ion exchange
  • Layered compounds
  • Sulfides

ASJC Scopus subject areas

  • Catalysis
  • Organic Chemistry

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