磁场对微生物生长及苯酚降解影响的研究  

Effect of Magnetic Field on the Growth of Microbe and the Degradation of Phenol

作　　者：安燕[1] 程江[1] 杨卓如[1] 肖立军[1] 王锐[2] 

机构地区：[1]华南理工大学化工与能源学院,广东广州510640 [2]贵州大学化工学院,贵州贵阳550003

出　　处：《广州化学》2007年第3期16-19,25,共5页Guangzhou Chemistry

基　　金：广东省自然科学基金资助项目(No.04020114)

摘　　要：以Fe3O4磁粉和稳恒弱磁场作为磁场来源，研究了不同磁场条件对微生物／细菌生长及苯酚降解的影响。结果表明，1～4g／L磁粉加量对微生物生长有促进作用，使之提前进入对数增长期；投加量为4g／L时效果最好，加量超过6g／L会抑制微生物生长：磁粉添加使微生物生长静止期稳定性有所下降。适量磁粉和弱磁场作用可促进苯酚与微生物共代谢，能明显提高苯酚的去除率。4g／L磁粉、100mT恒弱磁场作用下，22h对苯酚的去除率分别可达96％、90％，无磁场对照组仅为85％。Using magnetic powder and steady mild magnetic field as the source of magnetic field, the effects of different conditions on the microbe / bacterium growth and phenol degradation were studied. The results showed that the dosage of magnetic powder of 1-4 g/L accelerated growth of microbe, and advanced to enter a period of logarithm increasing. The optimal dosage of magnetic powder was 4 g/L. The stability of growth quiescence time was decreased by adding magnetic powder. When the magnetic powder and the steady low-intensity magnetic field were 4 g/L and 50mT, respectively, the removal rate of phenol reached 96% and 90% after 22 hours.

关 键 词：磁粉 稳恒磁场 微生物 对数增长期 

分 类 号：X703[环境科学与工程—环境工程]