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利用不同组分原油逐级驯化筛选高效石油烃降解混菌

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郑瑾, 季远玲, 燕纪星, 王晓玲, 陈宏坤, 于文赫, 杜显元, 李慧敏, 周龙涛, 宋佳宇. 利用不同组分原油逐级驯化筛选高效石油烃降解混菌[J]. 环境工程学报, 2019, 13(2): 406-413. doi: 10.12030/j.cjee.201807126
引用本文: 郑瑾, 季远玲, 燕纪星, 王晓玲, 陈宏坤, 于文赫, 杜显元, 李慧敏, 周龙涛, 宋佳宇. 利用不同组分原油逐级驯化筛选高效石油烃降解混菌[J]. 环境工程学报, 2019, 13(2): 406-413. doi: 10.12030/j.cjee.201807126
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ZHENG Jin, JI Yuanling, YAN Jixing, WANG Xiaoling, CHEN Hongkun, YU Wenhe, DU Xianyuan, LI Huimin, ZHOU Longtao, SONG Jiayu. Stepwise domestication and screening of high effective petroleum hydrocarbon degrading bacteria by using crude oil with different components[J]. Chinese Journal of Environmental Engineering, 2019, 13(2): 406-413. doi: 10.12030/j.cjee.201807126
Citation: ZHENG Jin, JI Yuanling, YAN Jixing, WANG Xiaoling, CHEN Hongkun, YU Wenhe, DU Xianyuan, LI Huimin, ZHOU Longtao, SONG Jiayu. Stepwise domestication and screening of high effective petroleum hydrocarbon degrading bacteria by using crude oil with different components[J]. Chinese Journal of Environmental Engineering, 2019, 13(2): 406-413. doi: 10.12030/j.cjee.201807126
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利用不同组分原油逐级驯化筛选高效石油烃降解混菌

  • 1.

    中国石油集团安全环保技术研究院有限公司，北京 102206

  • 2.

    石油石化污染物控制与处理国家重点实验室，北京 102206

  • 3.

    大庆油田水务公司，大庆 163454

  • 4.

    中国石油新疆油田公司百口泉采油厂，克拉玛依 834000

  • 5.

    中国地质科学院，石家庄 050061

  • 6.

    新疆油田公司工程技术研究院，克拉玛依 834000

  • 基金项目:

    中国石油低碳二期重大科技专项2016E-1205中国石油低碳二期重大科技专项(2016E-1205)

Stepwise domestication and screening of high effective petroleum hydrocarbon degrading bacteria by using crude oil with different components

  • 1.

    CNPC Research Institute of Safety & Environmental Technology, Beijing 102206, China

  • 2.

    State Key Lab of Petroleum Pollution Control, Beijing 102206, China

  • 3.

    Daqing Oilfield Water Service Company, Daqing 163454, China

  • 4.

    Baikouquan Oil Production Plant of China Petroleum Xinjiang Oilfield Company, Karamay 834000, China

  • 5.

    Chinese Academy of Geological Sciences, Shijiazhuang 050061, China

  • 6.

    Engineering Technology Research Institute of Xinjiang Oilfield Company, Karamay 834000, China

  • Fund Project:

  • 摘要: 利用不同组分原油逐级驯化的方法对克拉玛依油田的石油污染土样进行石油烃降解混菌的富集驯化，得到一组对稀油和稠油均具有高效降解能力的混菌M3。与采用单一原油驯化方法相比，混菌M3对稀油和稠油的降解率分别提高了12.5%和22%。该混菌具有较强的产表面活性剂的能力，能够使发酵液的表面张力从69.8 mN·m-1降至27.9 mN·m-1。通过混菌M3的生长条件优化实验得出：在温度30 ℃、pH 7~8、盐度1%、氮源选择尿素的条件下，混菌M3对原油的降解率最高。通过考察混菌M3在污染土壤中对原油的降解效果，发现：在修复期间，土壤脱氢酶呈先升高后降低的趋势；混菌M3可使饱和烃组分增加，并使芳香分、胶质和沥青质组分降低，对重质组分具有较好的降解效果。混菌M3的加入改变了原油性质，促进了土壤中原油的降解，经过56 d修复，土壤中原油降解率达到55.3%。
    Abstract: In this study, the petroleum hydrocarbon degrading bacteria were enriched and domesticated from the oil contaminated soil samples collected from Karamay oil field through a stepwise method using thin oil and heavy oil with different components, and a group of mixed bacteria M3 with high degradation ability for both thin oil and heavy oil was obtained. The corresponding degradation rates increased by 12.5% and 22%, respectively, in comparison with the traditional enrichment method using single crude oil. The mixture has a strong ability to produce biological surfactants, and can reduce the surface tension of the solution from 69.8 mN·m-1 to 27.9 mN·m-1. By optimizing the growth conditions of M3, the highest degradation rate of crude oil was obtained at the temperature of 30 ℃, pH 7~8, salinity of 1% and a nitrogen source of urea. The effect of M3 on degrading crude oil in contaminated soil showed that the soil dehydrogenase increased, and then decreased during the period of remediation. The addition of mixed bacteria M3 resulted in the change of crude oil properties, in which the saturated hydrocarbon components increased, aromatic hydrocarbons, colloid and asphaltene components decreased. The mixed M3 promoted the degradation of crude oil in soil with the corresponding degradation rate of 55.3% after 56 d remediation.
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  • 刊出日期:  2019-02-02

利用不同组分原油逐级驯化筛选高效石油烃降解混菌

  • 1. 中国石油集团安全环保技术研究院有限公司，北京 102206
  • 2. 石油石化污染物控制与处理国家重点实验室，北京 102206
  • 3. 大庆油田水务公司，大庆 163454
  • 4. 中国石油新疆油田公司百口泉采油厂，克拉玛依 834000
  • 5. 中国地质科学院，石家庄 050061
  • 6. 新疆油田公司工程技术研究院，克拉玛依 834000
基金项目:

中国石油低碳二期重大科技专项2016E-1205中国石油低碳二期重大科技专项(2016E-1205)

摘要: 利用不同组分原油逐级驯化的方法对克拉玛依油田的石油污染土样进行石油烃降解混菌的富集驯化，得到一组对稀油和稠油均具有高效降解能力的混菌M3。与采用单一原油驯化方法相比，混菌M3对稀油和稠油的降解率分别提高了12.5%和22%。该混菌具有较强的产表面活性剂的能力，能够使发酵液的表面张力从69.8 mN·m-1降至27.9 mN·m-1。通过混菌M3的生长条件优化实验得出：在温度30 ℃、pH 7~8、盐度1%、氮源选择尿素的条件下，混菌M3对原油的降解率最高。通过考察混菌M3在污染土壤中对原油的降解效果，发现：在修复期间，土壤脱氢酶呈先升高后降低的趋势；混菌M3可使饱和烃组分增加，并使芳香分、胶质和沥青质组分降低，对重质组分具有较好的降解效果。混菌M3的加入改变了原油性质，促进了土壤中原油的降解，经过56 d修复，土壤中原油降解率达到55.3%。

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