关键词: 生物反应器, 固定化, 生物载体, 磁场, 流化床, 生物反应器, 固定化, 生物载体, 磁场, 流化床

Abstract: Magnetically assisted bioreactors directly control the motion of magnetic bio-supports by assisting magnetic field，which improves mass transfer and relative motion between catalyst particles and can be combined with the advantages of fixed-bed，slurry-bed，moving-bed and fluidized-bed reactors. In this paper，magnetic bio-supports are characterized from three aspects，including magnetic material，carrier material and construction method；basic principles for construction of axial/transverse electromagnetic field and permanent magnetic field are summarized；configurations of magnetically assisted stirred reactor，magnetically assisted fixed-bed，magnetically assisted fluidized-bed and magnetically stabilized fluidized-bed reactor as well as their applications in biological and chemical processing are presented. Finally，research of magnetically assisted bioreactor is still in the laboratory，and further development asks for novel bio-compatible magnetic supports，controllable homogeneous large-scale assisted magnetic field and more creative reactor design.

Key words: bioreactors, immobilization, biosupport, magnetic field, fluidized-bed, bioreactors, immobilization, bio-support, magnetic field, fluidized-bed