National Key Laboratory of Biochemical Engineering & Laboratory of Separation Science and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China.
Bioresour Technol. 2012 Apr;110:120-4. doi: 10.1016/j.biortech.2012.01.184. Epub 2012 Feb 11.
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.
固定化漆酶在磁性介孔硅纳米粒子上已被开发用于高效降解苯酚。固定化漆酶对苯酚的降解率比游离漆酶高 2 倍，固定化漆酶在经过 10 次连续焦化废水批次处理后仍保留了其初始降解能力的 71.3%。在磁稳定流化床（MSFB）中，通过固定化漆酶可以增强焦化废水中的苯酚降解，因为其具有良好的混合和传质效果。在 MSFB 中连续运行 40 小时后，在流速小于 450mLh(-1)的情况下，苯酚的降解率仍保持在 99%以上，之后缓慢下降至 91.5%。本研究表明，磁性介孔载体上的固定化漆酶与 MSFB 一起为在工业废水中连续酶促降解酚类化合物提供了一种很有前途的途径。
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