Free energy of interaction of sodium dodecyl sulfate in aqueous solution with carbon black surfaces.
The free energy of the adsorption process of an ionic surfactant from aqueous solutions onto a set of carbon blacks in the range of low concentrations was evaluated using the model proposed by van Oss and co-workers. The obtained results indicated that the free energy of interaction between adsorbent and adsorbate through water results mainly from Lifshitz-van der Waals and electrostatic interactions, and its value showed a good correspondence with that previously found from a combination of the classical measurements of adsorption isotherms and the Langmuir model.
González-García
C M
CM
Departamento de Ingeniería Química y Energética, Universidad de Extremadura, Badajoz, 06071, Spain.
González-Martín
M L
ML
Gallardo-Moreno
A M
AM
Gómez-Serrano
V
V
Labajos-Broncano
L
L
Bruque
J M
JM
D000327:Adsorption; D012967:Sodium Dodecyl Sulfate / Q000737:chemistry*; D012996:Solutions / Q000737:chemistry; D053260:Soot / Q000737:chemistry*; D013499:Surface Properties; D013816:Thermodynamics; D014867:Water / Q000737:chemistry
D012996:Solutions; D053260:Soot; D014867:Water; D012967:Sodium Dodecyl Sulfate