| 生物菌剂对石油污染土壤生物修复作用的研究 |
| 摘要点击 1812 全文点击 2069 投稿时间：2008-07-17 修订日期：2008-08-29 |
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| 中文关键词 ：石油污染土壤 生物菌剂GC-MS 分析 投加方式 温度 |
| 英文关键词 petmletma contaminated soil bioaugmentation products CC-Ms analysis injection methods temperature |
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| 中文摘要 |
| 在实验室条件下，研究了生物菌剂的投加量、投加方式及环境温度对石油污染土壤的修复作用 结果表明，土壤中石油烃的降解效果与生物菌剂的投加量呈正相关，当生物菌剂投加量为0.6mg·kg-1时，修复,48 d 后，石油烃的降解率为87%.GC-MS分析结果表明，石油污染原土中烷烃的含量最高为82.1%其次为烯烃，含量为16%，还含有少量的胡萝卜烷、烷基萘、甾烷和藿烷% 添加生物菌剂修复40 d 后，峰的数量由32个减少为14个，表明异构烷烃、烯烃、胡萝卜烷全部被降解，残留的物质为较难降解的正构烷烃、藿烷和甾烷，呈现前高后低的峰形，即接种细菌优先降解高碳组分，将长链的烷烃降解为短链的烷烃，随着生物菌剂投加量的增加，土壤中残留石油烃的含量逐渐降低% 一次加入生物菌剂修复,48 d后的峰高明显低于分2 次加入的相应值，故一次性全部加入生物菌剂是最佳的投加方式% 温度是限制石油污染土壤生物修复的重要环境因素，当温度为30℃第,48 d 的降解率可达80%，当温度为20℃，第,48 d的降解率可达60%，温度高有利于土壤中石油烃的降解，加快修复 |
| 英文摘要 |
| in an experimental investigation of bioaugmentation products affected oN the petroletum colitaminated soil The influence of thebioaugmentation products dose，injections and temperature ON bioremediation were studied The results showed that the degradation rate wasrdated positively to the amount of inoculation'when the dose was increased to 0.6 mg·kg-1,total petroleum hydrocarbon(TPH)degradationrate was 87％in 48 days The results of(GC-MS indicatedthat the dominant petroleum COnstituents in oil-contaminated raw soil were 82 1％n-akane，16％alkene and little of others hvdmcarbons，such as carotalie，alkylnaphthalenes，hopalies，and steranes The peaks amount of GCprofile decreased fmm 32 t0 14 aner 40 days of biorelnediation，this result indicated thatbraliched alkanes，alkene，and alkynaphthalenes werethoroughly degraded,then line alkanes'hopanes'and steralies were leftn soil in addition,the longer part of n—alkane were degraded with raterelativelv higher，while the residual fraction at the end of the test is shorter part of n—alkane because bacteria degraded the longer n—alkane toshorter The shorter n—alkane concelitration decreased with increasing inoculation Onetime injection of bioaugmentation products into soil clearlyilnproved the biodegradation efficiency higher than injection of bioaugmelitation products in turn Soil temperature also affected TPH degradationrate whenit was 30。C，TPH rate reached 80％，where as when it was 20℃，the TPH rate was lower to 60％，which indicated highertemperature ilnproved TPH degradation and accelerated biorelnediation
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