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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
Gan, Xinhong1,2; Teng, Ying1,2; Zhao, Ling1; Ren, Wenjie1; Chen, Wei1; Hao, Jialong3; Christie, Peter1; Luo, Yongming1,2
2018-10-05
发表期刊JOURNAL OF HAZARDOUS MATERIALS
ISSN0304-3894
卷号359页码:348-355
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.
关键词PAHs Hematite Degrading bacteria Interface mechanism Nano-SIMS
DOI10.1016/j.jhazmat.2018.07.070
资助者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
关键词[WOS]POLYCYCLIC AROMATIC-HYDROCARBONS ; ORGANIC-MATTER ; CLAY-MINERALS ; ANTIBACTERIAL ACTIVITY ; PSEUDOMONAS-PUTIDA ; SOIL ; BIOREMEDIATION ; ADSORPTION ; PENTACHLOROPHENOL ; CONTAMINANTS
语种英语
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]
资助者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
WOS研究方向Engineering ; Environmental Sciences & Ecology
WOS类目Engineering, Environmental ; Environmental Sciences
WOS记录号WOS:000446794400039
出版者ELSEVIER SCIENCE BV
引用统计
文献类型期刊论文
条目标识符http://ir.iggcas.ac.cn/handle/132A11/89161
专题地球与行星物理院重点实验室
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
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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.
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