摘要
从辽河口湿地污染土壤样品中分离筛选出2株高效石油降解菌lhk-2和lhk-10,经鉴定lhk-2为巴氏葡萄球菌（Staphylococcus pasteuri）,lhk-10为嗜麦芽寡养单胞菌（Stenotrophomonas maltophili）。两株菌的石油降解能力研究结果表明,培养8d后,加菌组的石油烃降解率均在60%以上。菌株lhk-2在12℃、pH5.0~9.0、NaCl浓度为2.5%的条件下生长良好;菌株lhk-10在12℃、pH5.0~10.0、NaCl浓度为3.0%时生长良好。培养20d后,两株菌对石油中所有正构烷烃组分去除率均在85%以上。
Petroleum-degradating strains lhk-2 and lhk-10 obtained from the oil-contaminated siol samples from Liaohe Estuary,were identified as Staphylococcus pasteuri and Stenotrophomonas maltophili respectively.A study on their petroleum degradability finds that in the shake-flask experiment,the removal efficiencies of both starins were over 60 % after 8 days.In addition,the optimum culture condition was temperature of 12 C,pH of 5.0-9.0 and salitity of 25 for strain lhk-2 while temperature of 12oC,pH of 5.0-10.0 and salitity of 30 for strain lhk-10.And both lhk-2 and lhk-10 can achieve over 85% removal efficiency of n-alkanes after 20 days.
出处
《海洋湖沼通报》
CSCD
北大核心
2011年第1期147-153,共7页
Transactions of Oceanology and Limnology
基金
国家水体污染控制与治理科技重大专项(2008ZX07208-009)
国家重点基础研究发展规划(973)项目(2006CB400602)
关键词
石油降解菌
河口湿地
石油污染
petroleum-degrading bacteria
estuarine wetland
oil pollution
