纳米Fe3O4协同微生物对土壤中的PCB30的降解
egradation of PCB30 by combined used of nanoscale Fe3O4 and microorgannism
本文研究了纳米Fe3O4协同微生物降解不同土壤中的2，4，6-多氯联苯（PCB30）。从土壤分离出一株能以PCBs为唯一碳源生长的PCB降解菌，经16SrDNA鉴定为假单胞菌Pseudomonas sp。结果表明，在30℃，微生物接种量为0.8mL（109 cfuomL-1），纳米Fe3O4投加量为16.7g/Kg时，反应7d后纳米Fe3O4/微生物协同体系残留率为26.28％，纳米Fe3O4单一体系的残留率为43.27％，微生物单一体系的残留率为63.18％；协同体系降解效果明显优于微生物和纳米Fe3O4单一体系。不同酸碱性和吸附性的土壤对PCB30降解效果有一定的影响，黄褐土残留率为26.28％，红壤残留率为32.51％，砂姜黑土残留率为51.32％。黄褐土可取的最为良好的降解效果。
he degradation of 2, 4, 6-polychlorinated biphenyl in soils by Fe3O4 nanoparticles combined with microorganism was investigated. An indigenous PCBs degrading bacterial was obtained from PCBs-contaminated soils. The PCBs degrader strain was identified as Pseudomonas sp by 16SrDNA gene sequence phylogenetic analysis. Experiment was designed to effect 0.8mL(109 cfuomL-1) cell,dosing 16.7g/Kg Fe3O4 and 30℃. Results show that, the residual rate of Fe3O4 nanoparticles/microorganism, Fe3O4 nanoparticles, microorganism respectively are 26.28％, 43.27％, 63.18％. The degradation of Fe3O4 nanoparticles/microorganism was much better than Fe3O4 nanoparticles and microorganism. Soils with different pH and adsorbability influenced the degradation of PCB30. The residual rate of alfisol, red soil, vertisol respectively were 26.28％, 32.51％, 51.32％. The alfisol got the best degradation.
司友斌、傅文、刘小红
环境污染、环境污染防治环境生物学生物科学现状、生物科学发展
多氯联苯纳米Fe3O4微生物协同降解
2 4 6-polychlorinated biphenylnanoparticles Fe3O4microorganismcombination degradation
司友斌,傅文,刘小红.纳米Fe3O4协同微生物对土壤中的PCB30的降解[EB/OL].(2014-06-05)[2025-08-02].http://www.paper.edu.cn/releasepaper/content/201406-86.点此复制
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