以萘为共代谢的芘的好氧生物降解

发布时间：2018-04-25 18:33

  本文选题：萘 + 芘　； 参考：《环境工程学报》2016年11期

【摘要】：为更好有效去除地下水中的常见污染物芘,以萘为降解基质,利用苍白杆菌降解芘,并对反应影响因素进行了研究,模拟了反应动力学。结果表明:浓度为100 mg·L~(-1)、pH=7、25℃、萘的初始反应24 h后萘的去除率达到99.84%,芘的去除率达到37.5%。另外,菌株在萘初始浓度不同的条件下对萘的降解符合一级动力学,对芘的降解符合二级动力学。结果表明苍白杆菌在去除地下水中的萘和芘方面具有很大前景。
[Abstract]:In order to effectively remove pyrene, a common pollutant in groundwater, naphthalene was used as the degradation substrate, pyrene was degraded by Bacillus pallidus, and the factors affecting the reaction were studied, and the kinetics of the reaction was simulated. The results showed that the removal rate of naphthalene and pyrene reached 99.84 and 37.5% respectively after the initial reaction for 24 h. In addition, the degradation of naphthalene obeys first-order kinetics under different initial concentration of naphthalene, and the degradation of pyrene accords with second-order kinetics. The results showed that Bacillus pallidus had great prospect in removing naphthalene and pyrene from groundwater.
【作者单位】： 中国地质大学(北京)水资源与环境学院水资源与环境工程重点实验室;
【基金】：北京市产学研项目(51900265005) 国家水体污染控制与治理科技重大专项(2015ZX07406005,2009ZX07207-008,2009ZX07419-002,2009ZX07207-001) 中央高校基本科研业务费专项(2652013101,2652013086,2652013087,2652015118,2652015005,2652015006) 科学仪器基础研究专款资助项目(2012YQ060115)
【分类号】：X523
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本文编号：1802471