title: Enhanced phenol degradation in coking wastewater by immobilized laccase on magnetic mesoporous silica nanoparticles in a magnetically stabilized fluidized bed.
abstract: The immobilized laccase on magnetic mesoporous silica nanoparticles has been developed for efficient phenol degradation. The degradation rate of phenol by the immobilized laccase was 2-fold higher than that of the free laccase, and the immobilized laccase retained 71.3% of its initial degradation ability after 10 successive batch treatments of coking wastewater. The phenol degradation in the coking wastewater was enhanced in a continuous treatment process by the immobilized laccase in a magnetically stabilized fluidized bed (MSFB) because of good mixing and mass transfer. The degradation rate of phenol maintained more than 99% at a flow rate of less than 450mLh(-1) and decreased slowly to 91.5% after 40h of the continuous operation in the MSFB. The present work indicated that the immobilized laccase on magnetic mesoporous supports together with the MSFB provided a promising avenue for the continuous enzymatic degradation of phenolic compounds in industrial wastewater.
authors.affiliation: National Key Laboratory of Biochemical Engineering & Laboratory of Separation Science and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China.
authors.forename: Feng
authors.initials: F
authors.lastname: Wang
authors.forename: Yiru
authors.initials: Y
authors.lastname: Hu
authors.forename: Chen
authors.initials: C
authors.lastname: Guo
authors.forename: Wei
authors.initials: W
authors.lastname: Huang
authors.forename: Chun-Zhao
authors.initials: CZ
authors.lastname: Liu
mesh_terms: D004800:Enzymes, Immobilized / Q000737:chemistry*; D042845:Laccase / Q000737:chemistry*; D008280:Magnetics; D053758:Nanoparticles; D010636:Phenols / Q000737:chemistry*; D012822:Silicon Dioxide / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D004800:Enzymes, Immobilized; D010636:Phenols; D014874:Water Pollutants, Chemical; D012822:Silicon Dioxide; D042845:Laccase