| Tsouris, C., T.C. Scott, and M.T. Harris, "Para- and
Dia-magnetic Particle Flocculation in a Magnetic Field," Sep. Sci. Technol., 30,
1407-1419 (1995). Summary: An
experimental apparatus for the study of high-gradient magnetic separations of para- and
dia-magnetic particles suspended in a liquid is described. The components of this system
include a cryogenic magnet, equipment for light-intensity measurements, and a dynamic
light-scattering technique for transient particle-size measurements. The flocculation of
paramagnetic iron oxide particles of approximately 200-nm diameter under the influence of
a uniform magnetic field is experimentally investigated. The effect of solution pH on
particle growth as a result of flocculation is examined with and without the presence of
the magnetic field. Results show that the flocculation rate of iron oxide particles
increases with the intensity of the magnetic field. |