Removal of heavy metal ions from aqueous solution by microemulsion-modified diatomite

ISSN: 10184619
1Citations
Citations of this article
1Readers
Mendeley users who have this article in their library.

Abstract

Diatomite modified by microemulsion (DMM) was used for the removal of heavy metal ions, such as lead (Pb), copper (Cu) and chromium (Cr), from aqueous solution. Character and performance of DMM on heavy metal ion adsorption were compared to raw diatomite (RD). The results indicate that Pb(II), Cu(II) and Cr(III) ions sorption capacities of diatomite were considerably improved after microemulsion modification. The surface area of modified diatomite was increased due to the present hydrolyzed aromatic acid in DMM. Because of the stronger surface-ionized function, the performance of the sorption rates of Pb(II), Cu(II) and Cr(III) in DMM were better than that in RD. Adsorption of heavy metals onto DMM and RD decreased in the order: Pb(II) > Cu(II) > Cr(III). Within the experimental range of pH (2.2-6.3), the heavy metal removal of DMM was higher than that of RD owing to the different electrostatic forces between heavy metal ions and the surface of the modified diatomite. The heavy metal removal rates by RD and DMM were improved with the increase of synthetic solution concentration (when the solution volume varies from 0 to 100 ml). by PSP.

Cite

CITATION STYLE

APA

Li, E., & Zeng, X. (2012). Removal of heavy metal ions from aqueous solution by microemulsion-modified diatomite. Fresenius Environmental Bulletin, 21(6), 1474–1479.

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free