Effects of temperature on the stability of colloidal montmorillonite particles at different pH and ionic strength

Interaction mechanism of radionickel on Na-montmorillonite: Influences of pH, electrolyte cations, humic acid and temperature

“…The increased desorption could be explained by the dissociation of 63 Ni(II) or the 63 Ni(II)-HA complex from the ternary system. The batch sorption results suggested the formation of strong 63 Ni(II)-HA complex, and the dissociation of 63 Ni(II)-HA might be the main interaction mechanism [50]. It was confirmed that the relevant groups of HA and their interaction with montmorillonite could be affected to a great extent by the solution pH and ionic strength [51,52].…”

Effect of temperature on rheological behavior of kaolinite and bentonite suspensions

“…For bentonite suspensions, García-García et al [16] considered is independent with T because the negative change mostly originates from permanent defects in the structure that is not affected by temperature, though a mild variation of with T can still be seen in their results. Based on the measured , García-García et al [17] calculated the total maximum energy potential, W T , which is mainly (and thus can be approximated by) repulsive electrostatic potential, W e . From their results (from their Fig.…”

“…García-García et al [16] find that because the repulsive electrostatic potential increases with increasing temperature, the bentonite colloid suspension is more stable at higher temperatures. García-García et al [17] find an increase in the energy potential with increasing temperature at alkaline pH, and a decrease with increasing temperature at acidic pH for bentonite clay. And for kaolinite clay, the magnitude of zeta potential is found to increases with increasing temperature [18,19].…”

The effect of temperature on the seepage transport of suspended particles in a porous medium

“…Tarì, Olhero, and Ferreira () also showed that increasing temperature led to a gradual diminution of alumina surface ionization, dielectric constant, and a total energy barrier for the coagulation, and the enhancement of the coagulation rate with increasing temperature led to a gradual increase of both relative apparent viscosity and thixotropy. García‐García, Jonsson, and Wold () and García‐García, Wold, and Jonsson () investigated the effect of temperature on the aggregation kinetics of colloidal montmorillonite particles in aqueous dispersions and found that the rate constant for colloid aggregation increased with increasing temperature when pH < 4, but decreased with increasing temperature when pH > 10. This effect became more pronounced at higher ionic strengths and temperatures.…”