使用沸石载体和聚合物涂层原位修复受原油污染的海洋沉积物中的微生物。
In situ microbial remediation of crude oil-soaked marine sediments using zeolite carrier with a polymer coating.
机构信息
Research Center for Coastal Environment Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China; University of Chinese Academy of Sciences, Beijing, China.
Research Center for Coastal Environment Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China.
出版信息
Mar Pollut Bull. 2018 Apr;129(1):172-178. doi: 10.1016/j.marpolbul.2018.02.030. Epub 2018 Feb 20.
Marine oil spill pollution is an important environmental problem in the world, especially crude oil-soaked marine sediments, because they are difficult to be remediated. In this study, in situ bioremediation of oil-soaked sediment was performed in the middle of the Bohai Sea. Oil-degrading bacteria were adsorbed on powdery zeolite (PZ)/granular zeolites (GZ) surfaces and then wrapped with poly-γ glutamic acid (γ-PGA). Settling column and wave flume experiments were conducted to model marine conditions and to select appropriate biological reagents. The optimal conditions were as follows: the average diameter of GZ 3 mm, mass ratio of GZ/PZ 2:1, and concentration of γ-PGA 7%. After bioremediation, over 50% of most oil-spilled pollutants n-alkanes (C to C) and polycyclic aromatic hydrocarbons were degraded in 70 days. This work resulted in a successful trial of in situ bioremediation of oil-soaked marine sediments.
海洋溢油污染是世界范围内的一个重要环境问题，特别是原油污染的海洋沉积物，因为它们很难得到修复。本研究在渤海中部进行了原位生物修复。油降解菌被吸附在粉末沸石（PZ）/颗粒沸石（GZ）表面，然后用聚-γ-谷氨酸（γ-PGA）包裹。沉降柱和波流水槽实验模拟了海洋条件，并选择了合适的生物试剂。最佳条件为：GZ 的平均直径为 3mm，GZ/PZ 的质量比为 2:1，γ-PGA 的浓度为 7%。生物修复后，在 70 天内，超过 50%的大部分溢油污染物正构烷烃（C 至 C）和多环芳烃被降解。这项工作成功地进行了原位生物修复受污染海洋沉积物的试验。
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