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Removal of phenol from aqueous phase by using neutralized red mud
Scopus
Toplam 169 atıf DOI
The objective of this study is to remove the phenol from aqueous solution by using the neutralized red mud in batch adsorption technique. The study was carried out as functions of contact time, pH, initial phenol concentration, red mud dosage and effect of salt addition. The experiments demonstrated that maximum phenol removal was obtained in a wide pH range of 1-9 and it takes 10 h to attain equilibrium. The adsorption data was analyzed using the Langmuir and the Freundlich isotherm models and it was found that the Freundlich isotherm model represented the measured sorption data well. The influence of addition of salt on phenol removal depends on the relative affinity of the anions for the red mud surface and the relative concentrations of the anions. © 2006 Elsevier Inc. All rights reserved.
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Selectively facilitated transport of Zn(II) through a novel polymer inclusion membrane containing Cyanex 272 as a carrier reagent
Scopus
Havuzumuzda 35 atıf almış
This paper describes the selectively facilitated transport of Zn(II) through a novel polymer inclusion membrane (PIM) containing Cyanex 272 as a carrier reagent. The prepared PIM was characterized by using Fourier Transform Infrared (FT-IR) spectroscopy and Atomic Force Microscopy (AFM) techniques and contact angle measurements. The effects of Zn(II) (in feed phase), HCl (in stripping phase) and Cyanex 272 (in membrane) concentrations on the transport were investigated. When the feed phase contained 1×10-4M Zn (II) at pH 3.4, 99% of Zn(II) was transported through the PIM (prepared with 1.0% carrier solution) by using 0.5M of HCl as a stripping phase. Furthermore, Zn(II) was preferably transported in the presence of various metal ions (i.e., Ni(II), Cu(II), Pb(II) and Co(II), etc.). The results also showed that transport efficiency of the PIM was reproducible and it could be efficiently used in the long-term separation processes. © 2011 Elsevier B.V.
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Kurumlar (1)
Selçuk Üniversitesi
Selçuklu, Turkey