化学工程2017，Vol.45Issue(9)：7-12,6.DOI:10.3969/j.issn.1005-9954.2017.09.002
利用磁性固定化微生物降解水中微量油
Degradation of trace oil in water using magnetic immobilized microorganism
摘要
Abstract
Because of the large consumption of refinery circulating water and it containing refractory hydrocarbons,it is essential to explore an efficient,economic and eco-friendly treatment of waster water.The immobilized microorganisms was prepared from PVA and SA with Fe3O4 particles mass fraction of 14.9％.The saturation magnetization was 8.59 emu/g.The biodegradation conditions for trace diesel in water (60 mg/L) were listed as the following:the temperature was 30 ℃,and the biodegradation time was 72 h.After treatment with the immobilized microorganisms,the degradation rate of diesel was above 99％.While do the analogy experiment with the free microorganisms,the degradation rate of diesel was only 86.8％.Activation of the immobilized microorganisms with oil would lead to higher reactivity,resistance ability to acid and base,and high concentration of substrate.Treatment of diesel solution with 60 mg/L with the activated biocatalyst for 40 h,the degradation rate of diesel was 99％.For the degradation of diesel solution with 640 mg/L,the degradation rate of diesel was more than 95％.After biodegradation for 13 times,the immobilized microorganisms remained reactivity,resulting in the degradation rate of diesel over 95 ％.关键词
炼油循环水/水处理/磁性固定化微生物/生物降解Key words
refinery circulating water/water treatment/saturation magnetization/biodegradation分类
化学化工引用本文复制引用
王永军,付文强,薛屏..利用磁性固定化微生物降解水中微量油[J].化学工程,2017,45(9):7-12,6.基金项目
宁夏回族自治区科技支撑计划项目(NX2015076) （NX2015076）
