PMID: 15244330Jul 13, 2004Paper

Extraction of heavy metals by 2-mercaptoethoxy groups attached to silica gel

Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
Craig A Bowe, Dean F Martin

Abstract

Silica gel is currently being used as a support for various straight chain mono- and bifunctional compounds such as amines, thiols (mercaptans), and mercaptoalochols. The current study reports the results of an investigation of a 2-mercaptoethoxy moiety covalently attached to silica gel. The condensation was effected by acid-catalyzed condensation of toluene solution of 2-mercaptoethanol and silica gel and azeotropically removing the water using a Dean-Stark tube. As a coordinating agent, this bifunctional compound was used in the removal of copper(II), cadmium(II), and lead(II) from standard aqueous solutions. Using silica gel support, the removal percentages were 91-93% for the three metals.

References

Oct 9, 2002·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Craig A BoweDean F Martin
Oct 10, 2003·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Craig A BoweDean F Martin
Apr 26, 2007·Academic Medicine : Journal of the Association of American Medical Colleges·Stephen K Klasko

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