Removal of Nickel(II) and Chlorobenzene from Water by Micellar-Enhanced Ultrafiltration with Anionic/Non-Ionic Surfactant
Corresponding Author(s) : B. Zhao
Asian Journal of Chemistry,
Vol. 23 No. 4 (2011): Vol 23 Issue 4
Abstract
The effect of a non-ionic surfactant, Tween 80 (TW80), on nickel ion removal in the ultrafiltration enhanced by an anionic surfactant, sodium dodecyl sulfate (SDS), was investigated. The simultaneous removal of nickel ions and chlorobenzene using ultrafiltration in the presence of the mixed SDS-TW80s was then studied. The mass ratios of SDS to TW80 were 3:1, 1:1 and 1:3. In the ultrafiltration of nickel alone, the removal efficiencies of nickel by SDS or SDS-TW80s increased with surfactant concentrations. Given the total surfactant concentration, increasing the TW80 fraction in SDS-TW80s brought about reduction in nickel rejection. The rejection efficiencies of nickel by surfactants are in the sequence of SDS > 3:1 SDS-TW80 > 1:1 SDSTW80 > 1:3 SDS-TW80. In the rejection of both chlorobenzene and nickel, the removal efficiencies of nickel by SDS-TW80s are in order of 3:1 SDS-TW80 > 1:1 SDS-TW80 > 1:3 SDS-TW80. The maximum removal percentage of nickel is up to 84.7 %. The removal efficiencies of chlorobenzene by SDS-TW80s are in order of 1:3 SDS-TW80 > 1:1 SDS-TW80 > 3:1 SDSTW80. The maximum removal percentage of chlorobenzene is 86.4 %. The flux reduction by surfactants and the effects of pH values and sodium chloride concentrations in feed solutions were also investigated. The results indicate that anionic-non-ionic surfactants could be potential in micellar-enhanced ultrafiltration for the removal of both organics and metal ions.
Keywords
Download Citation
Endnote/Zotero/Mendeley (RIS)BibTeX