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Adsorption and surface tension analysis of concentrated alkali halide brine solutions / Orhan Ozdemir in Minerals engineering, Vol. 22 N° 3 (Fevrier 2009) 

Public ISBD [article]  in Minerals engineering > Vol. 22 N° 3 (Fevrier 2009) . - pp. 263–271 Titre : Adsorption and surface tension analysis of concentrated alkali halide brine solutions Type de document : texte imprimé Auteurs : Orhan Ozdemir, Auteur ; Stoyan I. Karakashev, Auteur ; Anh V. Nguyen, Auteur Année de publication : 2009 Article en page(s) : pp. 263–271 Note générale : Génie Minier Langues : Anglais (eng) Mots-clés : Sodium  chloride  and  potassium  chloride  Surface  tension  Water  structure  maker  and  breaker Index. décimale : 622 Industrie minière Résumé : In this study, the equilibrium and dynamic surface tensions of sodium chloride and potassium chloride solutions have been measured as a function of concentration up to saturation (5.2 M for NaCl and 4.1 M for KCl) using sessile bubble tensiometry. The experimental results show that the surface tension of these and other salts significantly increases with increasing concentration due to negative adsorption of ions at the air/brine interface, regardless of their structure maker and breaker nature. Furthermore, the effect of these salts on the surface tension of aqueous solutions of sodium dodecyl sulfate (SDS) and methyl isobutyl carbinol (MIBC) was also studied. These results show that the salts increased the surface activity of SDS and MIBC. In the case of SDS, KCl increased the surface activity of SDS more significantly than NaCl did. In the case of MIBC, the effect of NaCl on MIBC surface activity was more significant than that of KCl. DEWEY : 622 ISSN : 0892-6875 En ligne : http://www.sciencedirect.com/science/article/pii/S089268750800201X [article] Adsorption and surface tension analysis of concentrated alkali halide brine solutions [texte imprimé] / Orhan Ozdemir, Auteur ; Stoyan I. Karakashev, Auteur ; Anh V. Nguyen, Auteur . - 2009 . - pp. 263–271. Génie Minier Langues : Anglais (eng) in Minerals engineering > Vol. 22 N° 3 (Fevrier 2009) . - pp. 263–271 Mots-clés : Sodium  chloride  and  potassium  chloride  Surface  tension  Water  structure  maker  and  breaker Index. décimale : 622 Industrie minière Résumé : In this study, the equilibrium and dynamic surface tensions of sodium chloride and potassium chloride solutions have been measured as a function of concentration up to saturation (5.2 M for NaCl and 4.1 M for KCl) using sessile bubble tensiometry. The experimental results show that the surface tension of these and other salts significantly increases with increasing concentration due to negative adsorption of ions at the air/brine interface, regardless of their structure maker and breaker nature. Furthermore, the effect of these salts on the surface tension of aqueous solutions of sodium dodecyl sulfate (SDS) and methyl isobutyl carbinol (MIBC) was also studied. These results show that the salts increased the surface activity of SDS and MIBC. In the case of SDS, KCl increased the surface activity of SDS more significantly than NaCl did. In the case of MIBC, the effect of NaCl on MIBC surface activity was more significant than that of KCl. DEWEY : 622 ISSN : 0892-6875 En ligne : http://www.sciencedirect.com/science/article/pii/S089268750800201X