Kinetics of Adsorption of High Molecular Weight Anionic Polyacrylamide onto Kaolinite: The Flocculation Process

Mathematical modeling of polymer-induced flocculation by charge neutralization

“…Hence, it is reasonable to assume that polymer adsorption attains equilibrium before particles undergo any meaningful number of collisions. However, there can be situations where polymer adsorption and hence flocculation occur over a period of hours or days [42,43]. These cases in which adsorption is the rate-determining or rate-influencing step in flocculation are not considered in the present work.…”

The effects of vegetative ash on infiltration capacity, sediment transport, and the generation of progressively bulked debris flows

“…Furthermore, increases in the viscosity of clay slurries in industrial processes are commonly altered by increasing fluid pH (Penner and Lagaly, 2001). Finally, changes in pH have also been found to alter the size, structure, and strength of flocs in clay-water slurries (Taylor et al, 2002) and to alter the rheological properties of coal suspensions by changing electrostatic surface charges (Atkas and Woodburn, 2000).…”

A review of polymeric dispersant stabilisation of titania pigment

“…Each of these rate-controlling factors is specific to a polymer system and will therefore be affected by variables such as polymer molecular weight, polydispersity, initial polymer concentration, solution conditions (such as pH, ionic strength, temperature, and solvent type) and level of mixing. For low molecular weight polymers (less than 20,000) the adsorption process is very quick, usually less than 1 h [11,63], but for high molecular weight polymers it can take several days to reach equilibrium [64,65].…”