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题名: Carbon isotopes of Middle-Lower Jurassic coal-derived alkane gases from the major basins of northwestern China
作者: Dai, Jinxing ; Zou, Caineng ; Li, Jian ; Ni, Yunyan ; Hu, Guoyi ; Zhang, Xiaobao ; Liu, Quanyou ; Yang, Chun ; Hu, Anping
刊名: INTERNATIONAL JOURNAL OF COAL GEOLOGY
出版日期: 2009
卷号: 80, 期号:2, 页码:124-134
关键词: Coal-derived alkane gases ; Middle-Lower Jurassic coal-bearing strata ; Carbon isotopes ; Light hydrocarbons ; China
学科分类: Energy & Fuels ; Geosciences, Multidisciplinary
英文摘要: Geobacillus pallidus XS2 and XS3 were isolated from oil contaminated soil samples in Yumen oilfield, China, and were able to produce bioemulsifiers on different hydrocarbons. Biodegradation assays exhibited that approximately 70% of PAH (250 mg/L) or 85% of crude oil (500 mg/L) was removed by the thermophilic bacteria after 20 days. The bioemulsifiers of the two strains were isolated and obtained a productive yield of 4.24 +/- 0.08 and 3.82 +/- 0.11 g/L, respectively. GPC analysis revealed that the number-average molecular weights (M) of the two bioemulsifiers were 271,785 Da and 526,369 Da, with PDI values of 1.104 and 1.027, respectively. Chemical composition studies exhibited that the bioemulsifier XS2 consisted of carbohydrates (68.6%), lipids (22.7%) and proteins (8.7%) while the bioemulsifier XS3 was composed by carbohydrates (41.1%), lipids (47.6%) and proteins (11.3%). Emulsification assays approved the effectiveness of bioemulsifiers over a wide range of temperature, pH and salinity. (C) 2011 Elsevier Ltd. All rights reserved.
收录类别: SCI
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.lig.ac.cn/handle/132962/2138
Appears in Collections:油气地球化学研究室_期刊论文

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Dai, Jinxing; Zou, Caineng; Li, Jian; Ni, Yunyan; Hu, Guoyi; Zhang, Xiaobao; Liu, Quanyou; Yang, Chun; Hu, Anping.Carbon isotopes of Middle-Lower Jurassic coal-derived alkane gases from the major basins of northwestern China,INTERNATIONAL JOURNAL OF COAL GEOLOGY,2009,80(2):124-134
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