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Influencing mechanisms of hematite on benzo(a)pyrene degradation by the PAH-degrading bacterium Paracoccus sp. Strain HPD-2: insight from benzo (a)pyrene bioaccessibility and bacteria activity

文献类型：期刊论文

作者Gan, Xinhong1,2; Teng, Ying1,2; Zhao, Ling1; Ren, Wenjie1; Chen, Wei1; Hao, Jialong3; Christie, Peter1; Luo, Yongming1,2
刊名JOURNAL OF HAZARDOUS MATERIALS
出版日期2018-10-05
卷号359页码:348-355
关键词PAHs Hematite Degrading bacteria Interface mechanism Nano-SIMS
ISSN号0304-3894
DOI10.1016/j.jhazmat.2018.07.070
英文摘要Iron oxides are reactive inorganic soil components that play an important role in the fate and transport of organic pollutants. Here, hematite was selected to investigate its effect on the biodegradation of benzo[a]pyrene (BaP) by Paracoccus sp. strain HPD-2. Approximately 60% of the total BaP was degraded in the absence of hematite after 7 days but only 30.8 and 20.8% of that was degraded after the addition of 10 and 20 mg mL(-1) hematite, respectively, indicating that the addition of hematite could significantly inhibit the biodegradation of BaP (P < 0.05). The hematite also lowered bacterium activity by coating the cells and by generating reactive oxygen species that destroyed the cells. Two-photon confocal laser scanning microscope images showed that the addition of hematite substantially decreased the amount of BaP combined with the bacterium, and this also enabled us to observe directly the migration and regression of BaP in the interaction between HPD-2 and hematite. Higher death ratio of HPD-2 might lower the Bar, access to live cells because dead cells have a higher adsorption affinity for BaP than live cells. These observations enhance our understanding of the mechanisms by which metal oxides, organic pollutants and degrading-bacteria interact during the biodegradation process.
WOS关键词POLYCYCLIC AROMATIC-HYDROCARBONS ; ORGANIC-MATTER ; CLAY-MINERALS ; ANTIBACTERIAL ACTIVITY ; PSEUDOMONAS-PUTIDA ; SOIL ; BIOREMEDIATION ; ADSORPTION ; PENTACHLOROPHENOL ; CONTAMINANTS
资助项目Natural Science Foundation of Jiangsu province[BK20150049] ; Chinese National Key Research and Development Program[2017YFA0207001] ; National Natural Science Foundation of China[41401565] ; National Natural Science Foundation of China[41571308]
WOS研究方向Engineering ; Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000446794400039
出版者ELSEVIER SCIENCE BV
资助机构Natural Science Foundation of Jiangsu province ; Natural Science Foundation of Jiangsu province ; Chinese National Key Research and Development Program ; Chinese National Key Research and Development Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Foundation of Jiangsu province ; Natural Science Foundation of Jiangsu province ; Chinese National Key Research and Development Program ; Chinese National Key Research and Development Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Foundation of Jiangsu province ; Natural Science Foundation of Jiangsu province ; Chinese National Key Research and Development Program ; Chinese National Key Research and Development Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Foundation of Jiangsu province ; Natural Science Foundation of Jiangsu province ; Chinese National Key Research and Development Program ; Chinese National Key Research and Development Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/89161]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Teng, Ying
作者单位1.Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Gan, Xinhong,Teng, Ying,Zhao, Ling,et al. Influencing mechanisms of hematite on benzo(a)pyrene degradation by the PAH-degrading bacterium Paracoccus sp. Strain HPD-2: insight from benzo (a)pyrene bioaccessibility and bacteria activity[J]. JOURNAL OF HAZARDOUS MATERIALS,2018,359:348-355.
APA Gan, Xinhong.,Teng, Ying.,Zhao, Ling.,Ren, Wenjie.,Chen, Wei.,...&Luo, Yongming.(2018).Influencing mechanisms of hematite on benzo(a)pyrene degradation by the PAH-degrading bacterium Paracoccus sp. Strain HPD-2: insight from benzo (a)pyrene bioaccessibility and bacteria activity.JOURNAL OF HAZARDOUS MATERIALS,359,348-355.
MLA Gan, Xinhong,et al."Influencing mechanisms of hematite on benzo(a)pyrene degradation by the PAH-degrading bacterium Paracoccus sp. Strain HPD-2: insight from benzo (a)pyrene bioaccessibility and bacteria activity".JOURNAL OF HAZARDOUS MATERIALS 359(2018):348-355.

入库方式： OAI收割

来源：地质与地球物理研究所

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