S. Takeda et al., Separation of algae with magnetic iron(III) oxide particles using superconducting high gradient magnetic field, NIP KAG KAI, (9), 2000, pp. 661-663
Algae in water was separated by using superconducting high gradient magnet
after magnetization of algae by means of attaching the colloidal particles
of hydrous iron(III) oxide. It is found that the percentage of recovery of
algae depends on the added amount of oxide particles. The percentage of rec
overy was also found to reach almost 100% when the very small amount of par
ticles was added to the algae suspension. These results demonstrate the fea
sibility of the magnetic separation of algae with no addition of polymer su
rfactant.