Cloud point phenomena in aqueous solutions of an anionic gemini surfactant with a dibenzene spacer in the presence of tetra-n-propyl-ammonium bromide

RSC Advances ◽  
2016 ◽  
Vol 6 (32) ◽  
pp. 27031-27038 ◽  
Author(s):  
Danhua Xie ◽  
Jianxi Zhao
Keyword(s):  
Aqueous Solutions ◽  
Cloud Point ◽  
Gemini Surfactant ◽  
Ammonium Bromide ◽  
Anionic Gemini Surfactant

The cloud point behaviour of a carboxylate gemini surfactant,O,O′-bis(sodium 2-dodecylcarboxylate)-p-dibenzenediol was observed in the presence of tetra-propyl-ammonium bromide.

Influence of arm length and number on star-shaped poly(2-isopropyl-2-oxazoline) aggregation in aqueous solutions near cloud point

2015 ◽  
Vol 14 (1) ◽  
pp. 15-26 ◽  
Author(s):  
Alina I. Amirova ◽  
Olga V. Golub ◽  
Tatyana U. Kirila ◽  
Alla B. Razina ◽  
Andrey V. Tenkovtsev ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Cloud Point

Cation binding properties of an anionic gemini surfactant monolayer

2017 ◽  
Vol 522 ◽  
pp. 536-543 ◽  
Author(s):  
Jeveria Rehman ◽  
Concepcion P. Ponce ◽  
Hessamaddin Younesi Araghi ◽  
Matthew F. Paige
Keyword(s):  
Gemini Surfactant ◽  
Cation Binding ◽  
Binding Properties ◽  
Anionic Gemini Surfactant

scholarly journals Multi-Component Adsorption of Benzene, Toluene, Ethylbenzene, and Xylene from Aqueous Solutions by Montmorillonite Modified with Tetradecyl Trimethyl Ammonium Bromide

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
H. Nourmoradi ◽  
Mehdi Khiadani ◽  
M. Nikaeen
Keyword(s):  
Experimental Data ◽  
Aqueous Solutions ◽  
Structural Changes ◽  
Freundlich Isotherm ◽  
Isotherm Models ◽  
Ammonium Bromide ◽  
Order Kinetic ◽  
Multicomponent Adsorption ◽  
Benzene Toluene ◽  
Kinetic And Isotherm Models

Multicomponent adsorption of benzene, toluene, ethylbenzene, and xylene (BTEX) was assessed in aqueous solutions by montmorillonite modified with tetradecyl trimethyl ammonium bromide (TTAB-Mt). Batch experiments were conducted to determine the influences of parameters including loading rates of surfactant, contact time, pH, adsorbate concentration, and temperature on the adsorption efficiency. Scanning electron microscope (SEM) and X-ray diffractometer (XRD) were used to determine the adsorbent properties. Results showed that the modification of the adsorbent via the surfactant causes structural changes of the adsorbent. It was found that the optimum adsorption condition achieves with the surfactant loading rate of 200% of the cation exchange capacity (CEC) of the adsorbent for a period of 24 h. The sorption of BTEX by TTAB-Mt was in the order ofB<T<E<X. The experimental data were fitted by many kinetic and isotherm models. The results also showed that the pseudo-second-order kinetic model and Freundlich isotherm model could, respectively, be fitted to the experimental data better than other available kinetic and isotherm models. The thermodynamic study indicated that the sorption of BTEX with TTAB-Mt was achieved spontaneously and the adsorption process was endothermic as well as physical in nature. The regeneration results of the adsorbent also showed that the adsorption capacity of adsorbent after one use was 51% to 70% of original TTAB-Mt.

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