摘要
以陕北石油污染土壤中筛选出来的菌株Y7作为研究对象,用石油烃培养基进行驯化培养。通过石油烃降解率、OD(吸光度)值和pH值等指标来评价降解效果。研究结果表明菌株Y7可以对石油烃进行有效降解,并且在培养基中加入适量的Fe2+,对菌株的生长和石油烃的降解有一定促进作用,其中最佳Fe2+浓度为24 mg/L;菌株Y7在最佳Fe2+浓度的环境下,前3天降解石油烃效果最好,降解率可达40%。
We screen out bacteria Y7 from oil-contaminated soil in the northern Shaanxi as research object,and domesticate with the medium of petroleum hydrocarbons.The degradation effect is evaluated by the degradation rate of petroleum hydrocarbons,OD（absorbance） value and the pH value.The study showed that bacteria Y7 could effectively degrade petroleum hydrocarbons,and the medium added the appropriate amount of Fe^2＋ had a certain role in promoting the growth of bacteria Y7 and the degradation of petroleum hydrocarbons,and the best Fe2＋ concentration was 24 mg/L.In the circumstance of the best Fe2＋ concentration,the degradation effect of petroleum hydrocarbon was the best early three days,and the degradation rate was up to 40%.
出处
《环保科技》
2010年第3期35-38,共4页
Environmental Protection and Technology
关键词
菌株Y7
石油烃
生物降解
Fe2+
bacteria Y7
petroleum hydrocarbons
biodegradation
Fev2＋
