Magnetohydrodynamic Aggregation of Cholesterol and Polystyrene Latex Suspensions

The magnetic field influence on the polymorph composition of CaCO3 precipitated from carbonized aqueous solutions

“…There is no unambiguous evidence that the magnetic treatment affected either the nucleation frequency/crystal growth rate or the agglomeration state of the precipitated particles. Though the occurrence of such effects, by now well docu- mented by many studies [9,10,[12][13][14], cannot be discounted on the basis of the presented experimental evidence, it seems clear that they exerted no major influence on the morphological characteristics of the precipitated CaCO 3 particles. On the whole, the differences in the morphology of the magnetically and nonmagnetically treated precipitates are clearly the consequence and the reflection of their different polymorph compositions.…”

“…The term MHD phenomena refers to those influences of the magnetic treatment, which are observable only when both the MF and the flow of the treated fluid are present [13], i.e., under the dynamic treatment conditions. The proposed MHD mechanisms consider all observed effects of the dynamic magnetic treatment to be the consequences of the action of the Lorentz force-a force that acts on charged species as they traverse the MF.…”

“…magnetohydrodynamic (MHD) phenomena [3,11,[13][14][15]29,30] and 2. hydration effects [4,5,10,12,[31][32][33][34][35].…”

The effect of magnetic field on ion hydration and sulfate scale formation

“…Coey and Cass [15] incubated the solution at 0.1 T for several hours and observed memory of magnetic treatment beyond 200 h. Colic and Morse [16] proposed that such memory effect results from relaxation of perturbed gas-liquid interface of nanobubbles present in the liquid. The colloidal stability of flowing dispersions of cholesterol or polystyrene latex particles, which are weakly charged, in the presence of orthogonally applied magnetic field varied with the magnetic field intensity, since the mean particle size was larger at 0.15 T and 1.0 T than at 2.0 T [17]. More recently the application of a permanent magnetic field of 0.3 T during the synthesis of vanadium oxide nano-scrolls, manganese oxide nano-tubes and a polyoxometalate encapsulating metal organic framework affected their self-assembling, yielding products with larger magnetic order and crystallinity [18].…”

Mayonnaise production in batch and continuous process exploiting magnetohydrodynamic force

“…This magnetohydrodynamic effect was found to be responsible for an enhanced flocculation rate of suspensions of cholesterol in aqueous sodium chloride solution circulated through an orthogonal magnetic field (Busch et al, 1996;Van Kleef et al, 1983). Whereas a magnetic field applied on laminar flow favours aggregation of suspended particles, a magnetic field combined with turbulent flow recently has been found to assist disaggregation of suspended particles (Stuyven et al, 2009).…”