Adsorption of weak organic electrolytes from dilute aqueous solution onto activated carbon. Part I. Single-solute systems

Adsorption of NOM onto Activated Carbon: Effect of Surface Charge, Ionic Strength, and Pore Volume Distribution

“…Surface-adsorbate interactions as described in (i) generally occur at low surface concentrations (14). As the charge from adsorbed NOM builds up on the carbon surface, factors (ii) and (iii) will become the dominant contributions to ⌬G elec (14,15). Hence, at low surface concentrations, the aforementioned factors may favor or oppose adsorption, depending upon surface charge, while at high surface concentrations, these contributions will oppose adsorption.…”

“…Surface-adsorbate interactions as described in (i) generally occur at low surface concentrations (14). As the charge from adsorbed NOM builds up on the carbon surface, factors (ii) and (iii) will become the dominant contributions to ⌬G elec (14,15).…”

Microcystin-LR Adsorption by Activated Carbon

“…The solution pH also affects adsorption by ACs, due to adsorbent surface chemical group preferential polarization (11,12). Recently, Jiang et al (13) examined the effect of pH in the range 5 to 7 on humic acid adsorption by ACs.…”

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

“…Part of this literature recognizes the fact that surfactant adsorption is a complex process (7). 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).…”