降解菌ZQ_5与紫茉莉对芘污染土壤的联合修复  

Microbial-phytoremediation of pyrene contaminated soil using pyrene-degrading strain ZQ_5 with Mirabilis Jalapa

作　　者：赵媛媛[1] 张万坤[1] 马慧[1] 白鹏[1] 林景卫[1] 钟鸣[1] 

机构地区：[1]沈阳农业大学辽宁省农业生物技术重点实验室,沈阳110161

出　　处：《环境工程学报》2013年第7期2752-2756,共5页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(31070448);辽宁省自然科学基金资助项目(20062111)

摘　　要：在温室盆栽条件下,通过单独种植紫茉莉、单独接种多环芳烃(PAHs)模式化合物芘的专性降解菌ZQ5和两者的联合修复的3种处理,对芘污染土壤的修复效果进行了研究。结果表明,经90 d修复后,植物-微生物联合修复可将人工污染土壤中的芘降解81.1%,将石油污染土壤中的芘降解50.3%,其修复效率明显高于其他2种处理,是紫茉莉修复的1.98倍,是降解菌ZQ5修复的1.39倍。ZQ5的不同接菌量对于修复60 d后的降解率影响不大。外源生物修复条件下,10～20 cm土壤的修复效率要高于5 cm土壤;自然降解条件下,5 cm土层降解率略高于其他土层。A pot-experiment in greenhouse was carried out to investigate the remediation efficiency of pyrene contaminated soil by planting Mirabilis Jalapa L alone, inoculating with PAHs-pyrene degrading bacteria ZQ5 strains alone and microbial-phytoremediation treatment. After 90 days, the results indicate that the microbial-phytoremediation has obvious superiority. It can remove 81.1% pyrene in the artificially contaminated soil, and 50.3% pyrene in the petroleum-contaminated soil. The microbial-phytoremediation efficiency is 1.98 times of Mirabilis Jalapa L and 1.39 times of ZQ5 strains. Different amounts of inoculating ZQ5 strains have obvious difference for initial repairment, but have little effect in the long-term repairment process. Under exogenous bioremediation conditions, the soil in depth of 10 cm to 20 cm has higher remediation efficiency than 5 cm; under natural degradation conditions, degradation rate of 5 cm depth soil is slightly higher than other soil.

关 键 词：芘 污染土壤 降解效率 植物-微生物联合修复 

分 类 号：X172[环境科学与工程—环境科学] X173