title: Synthesis of Fe3O4 poly(styrene-glycidyl methacrylate) magnetic porous microspheres and application in the immobilization of Klebsiella sp. FD-3 to reduce Fe(III)EDTA in a NO(x) scrubbing solution.
abstract: Magnetic poly(styrene-glycidyl methacrylate) porous microspheres (MPPM) with high magnetic contents were prepared by surfactant reverse micelles and emulsion polymerization of monomers, in which the well-dispersed Fe(3)O(4) nanoparticles were modified by polyethylene glycol (PEG) and oleic acid (OA) respectively. The characterizations showed that both of the OA-MPPM and the PEG-MPPM were ferromagnetic, however, the OA-MPPM was used to immobilize the bacteria for more advantages. Therefore, the effects of monomer ratio, surfactant, crosslinker and amount of Fe(3)O(4) on the structure, morphology and magnetic contents of the OA-MPPM were investigated. Then, the OA-MPPM was utilized to immobilize Klebsiella sp. FD-3, an iron-reducing bacterium for Fe(III)EDTA reduction applied in NO(x) removal. Compared with free bacteria, the immobilized FD-3 showed a better tolerance to the unbeneficial pH and temperature conditions.
authors: Department of Environmental Science & Engineering, Huaqiao University, Xiamen 361021, China.
authors: Xiaoyan
authors: X
authors: Wang
authors: Zuoming
authors: Z
authors: Zhou
authors: Guohua
authors: G
authors: Jing
mesh_terms: D018914:Cells, Immobilized / Q000382:microbiology; D003432:Cross-Linking Reagents; D004492:Edetic Acid / Q000378:metabolism; D005290:Ferric Compounds / Q000378:metabolism*; D052203:Ferrosoferric Oxide / Q000737:chemistry*; D006601:Hexoses / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D007709:Klebsiella / Q000378:metabolism*; D008863:Microspheres; D009589:Nitrogen Oxides; D019301:Oleic Acid / Q000737:chemistry; D010316:Particle Size; D011092:Polyethylene Glycols / Q000737:chemistry; D011109:Polymethacrylic Acids / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature; D013818:Thermogravimetry; D014961:X-Ray Diffraction
chemical_list: D003432:Cross-Linking Reagents; D005290:Ferric Compounds; D006601:Hexoses; D009589:Nitrogen Oxides; D011109:Polymethacrylic Acids; C524317:poly(styrene-co-glycidyl methacrylate); C018665:sorbitan monooleate; D019301:Oleic Acid; D011092:Polyethylene Glycols; D004492:Edetic Acid; C019179:Fe(III)-EDTA; D052203:Ferrosoferric Oxide