Adsorption of Single Anionic Surfactants on Hydrophobic Surfaces

Adsorption of Anionic Surfactant by Activated Carbon: Effect of Surface Chemistry, Ionic Strength, and Hydrophobicity

“…From an electrostatics perspective, since both C 12 and C 8 are anionic surfactants, the AC surface charge is unfavorable for a negatively charged adsorptive-adsorbent interaction. A repulsive force is expected (2,42,43).…”

“…It is well-known that the surface charge of an AC is pH dependent, which will affect the mechanism of surfactant adsorption (31). The study of surfactant adsorption based on an electrostatics interaction mechanism has been well developed (1,2,6,32,33). However, few studies include anionic surfactant adsorption.…”

“…Surfactants are not only related to soaps and detergents in daily life, they are also in heavy demand for industrial processes requiring colloid stability, metal treatments, mineral flotation, pesticides, oil production, pharmaceutical formulation, emulsion polymerization, and particle growth (1,2). The broad range of surfactant applications may also cause side effects in the environment and in these industrial processes.…”

Activated Carbon Oxygen Content Influence on Water and Surfactant Adsorption

“…Activated carbon (AC) has been widely used for many years as an adsorbent in the drinking water, wastewater treatment, food, beverage, pharmaceutical, and chemical industries (1)(2)(3)(4). Recently, AC finds increasing use as an adsorbent for the purification of process streams within industrial chemical processes.…”

Studies of Cellulose Acetate Supported Ergosterol Liquid Membrane

“…In the case of ergosterol, only -OH group is hydrophilic and the rest part is hydrophobic. When dispersed in aqueous solution at low concentration, the surfactant migrates towards any available hydrophobic interface and orients its hydrophobic segment towards the interface and its hydrophilic portion in the aqueous phase [21][22][23]. During studies, it has been found that immobilization of the surfactant depends on many factors like pH, ionic strength, temperature and surfactant structure.…”