Study on the Cloud Point Extraction of Copper(II) from an Aqueous Sulfate Medium withN,N′-Bis(salicylideneaminoethyl)amine Polydentate Schiff Base into a Nonionic Surfactant Phase

2010 ◽  
Vol 55 (2) ◽  
pp. 912-918 ◽  
Author(s):  
Hasnia Reffas ◽  
Tayeb Benabdallah ◽  
Mohamed Hadj Youcef ◽  
Hocine Ilikti
Keyword(s):  
Schiff Base ◽  
Nonionic Surfactant ◽  
Cloud Point ◽  
Cloud Point Extraction ◽  
Surfactant Phase ◽  
Sulfate Medium

scholarly journals Removal of Direct Yellow 12 from Water Samples by Cloud Point Extraction Using Triton X-100 as Nonionic Surfactant

2011 ◽  
Vol 8 (4) ◽  
pp. 1588-1595 ◽  
Author(s):  
Shahnaz Abedi ◽  
Farzin Nekouei
Keyword(s):  
Nonionic Surfactant ◽  
Cloud Point ◽  
Salt Concentration ◽  
Water Samples ◽  
Cloud Point Extraction ◽  
Extraction Procedure ◽  
Optimum Conditions ◽  
Single Extraction ◽  
Triton X

A surfactant mediated cloud point extraction (CPE) procedure has been developed to remove color from wastewater containing direct yellow 12 (Chrysophenine G), using triton x-100 (TX-100) as nonionic surfactant. The effects of the concentration of the surfactant, pH, temperature and salt concentration on the different concentration of dye have been studied and optimum conditions were obtained for the removal of direct yellow 12 (DY 12). The concentration of DY 12 in the dilute phase was measured using UV-Vis spectrophotometer. It was found that the separation of phases was complete and the recovery of DY 12 was very effective in the presence of NaCl as an electrolyte. The results showed that up to 600 mg L−1of DY 12 can quantitatively be removed (>96%) by Cloud point extraction procedure in a single extraction using optimum conditions.

scholarly journals Micelle Mediated Trace Level Sulfide Quantification through Cloud Point Extraction

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Samrat Devaramani ◽  
Pandurangappa Malingappa
Keyword(s):  
Cloud Point ◽  
Metal Ion ◽  
Cloud Point Extraction ◽  
Cetylpyridinium Chloride ◽  
Ligand Complex ◽  
Trace Level ◽  
Colored Complex ◽  
Reduction Of Iron ◽  
Surfactant Phase ◽  
The Common

A simple cloud point extraction protocol has been proposed for the quantification of sulfide at trace level. The method is based on the reduction of iron (III) to iron (II) by the sulfide and the subsequent complexation of metal ion with nitroso-R salt in alkaline medium. The resulting green-colored complex was extracted through cloud point formation using cationic surfactant, that is, cetylpyridinium chloride, and the obtained surfactant phase was homogenized by ethanol before its absorbance measurement at 710 nm. The reaction variables like metal ion, ligand, surfactant concentration, and medium pH on the cloud point extraction of the metal-ligand complex have been optimized. The interference effect of the common anions and cations was studied. The proposed method has been successfully applied to quantify the trace level sulfide in the leachate samples of the landfill and water samples from bore wells and ponds. The validity of the proposed method has been studied by spiking the samples with known quantities of sulfide as well as comparing with the results obtained by the standard method.

Removal of Reactive Blue 19 using nonionic surfactant in cloud point extraction

2014 ◽  
Vol 138 ◽  
pp. 71-76 ◽  
Author(s):  
R.P.F. Melo ◽  
E.L. Barros Neto ◽  
M.C.P.A. Moura ◽  
T.N. Castro Dantas ◽  
A.A. Dantas Neto ◽  
...  
Keyword(s):  
Nonionic Surfactant ◽  
Cloud Point ◽  
Cloud Point Extraction ◽  
Reactive Blue 19
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