کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
609501 | 880624 | 2010 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Cooperative coadsorption of 4-nitrophenol and basic yellow 28 dye onto an iron organo–inorgano pillared montmorillonite clay Cooperative coadsorption of 4-nitrophenol and basic yellow 28 dye onto an iron organo–inorgano pillared montmorillonite clay](/preview/png/609501.png)
Sorption properties of an iron surfactant-modified pillared montmorillonite (Fe-SMPM) toward two organic pollutants, basic yellow 28 dye (BY28) and 4-nitrophenol (4-NP), were studied at different pH values in both single component and binary pollutant systems. The pseudo-first-order model fits well with the kinetic data obtained in single component studies and sorption capacities of both BY28 and 4-NP increased with the pH value. A sorption synergetic mechanism was observed in binary systems; 4-nitrophenol adsorption was enhanced by the presence of BY28 in the mixture and increased with dye concentrations. Isotherms were described using the Freundlich model in single component systems and the Sheindorf–Rebhun–Sheintuch (SRS) model, an extended Freundlich model, in binary mixtures systems. Hydrophobic interactions between the surfactant-modified pillared clay and the pollutants were suggested to explain the sorption mechanisms.
Sheindorf-Rebuhn-Sheintuch (SRS) describes the simultaneous adsorption of BY 28 and 4-NP.Figure optionsDownload high-quality image (113 K)Download as PowerPoint slideResearch highlights
► Simultaneous adsorption of 4-NP and BY 28 onto a Fe-SMPM.
► Cooperative co-adsorption.
► Extended Freundlich model.
► Sheindorf-Rebuhn-Sheintuch model (SRS) gave acceptable results in the range 0–400 μmol g−1.
Journal: Journal of Colloid and Interface Science - Volume 350, Issue 1, 1 October 2010, Pages 315–319