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首页> 外文期刊>International Journal of Environmental Science and Technology >Isolation and characterization of an n-hexadecane degrading Acinetobacter baumannii KSS1060 from a petrochemical wastewater treatment plant
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Isolation and characterization of an n-hexadecane degrading Acinetobacter baumannii KSS1060 from a petrochemical wastewater treatment plant

机译：石化废水处理厂中正十六烷降解鲍曼不动杆菌KSS1060的分离与表征

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Hydrocarbons are widespread in the environment, but because of the massive utilization of petroleum products, they are nowadays strongly involved in environmental pollution. Bioremediation is the obliging technology for the treatment of hydrocarbon-contaminated sites. Therefore, to investigate the potential of petrochemical hydrocarbon (HC)-degrading indigenous microorganisms in wastewater samples collected from Fajr petrochemical wastewater treatment plants, a strain of Acinetobacter baumannii was isolated from this hydrocarbon-contaminated wastewater and examined for its ability to utilize hexadecane. This strain was capable to grow on n-hexadecane as the sole source of carbon and energy. The ability of the isolate to degrade n-hexadecane was assessed by growth assays and gas chromatography/mass spectrometry analysis. Using GC analysis, it was shown that the strain KSS1060 was able to degrade 62 % of n-hexadecane within 6 days, which mostly (51.6 %) occurred within the first 24 h. Identification of this hexadecane-degrader bacterium was carried out using 16S rDNA sequence analysis. Additionally, characterization of chemical composition of wastewater samples by the use of gas chromatography/mass spectrometry analysis indicated the presence of Hexanal, Benzene methanol, Indanol, 1,2-benzenedicarboxylic acid diethyl ester, diisobutyl phthalate, and Phenol, 4,4'-(1-methylethylidene) in the major constituents of wastewater. In conclusion, this study can focus on more cost-efficient applications of native bacterial strains for the large-scale biodegradation of wastewater samples from petrochemical plant in industry, where it causes disturbing problems due to its harmful effects on different organisms and human beings.
机译：碳氢化合物广泛存在于环境中，但是由于石油产品的大量利用，如今它们已严重参与环境污染。生物修复是用于处理碳氢化合物污染部位的必不可少的技术。因此，为了研究从Fajr石化废水处理厂收集的废水样品中降解石化烃（HC）的原生微生物的潜力，从这种被烃污染的废水中分离了鲍曼不动杆菌菌株，并研究了其利用十六烷的能力。该菌株能够在正十六烷上生长，这是唯一的碳和能量来源。分离物降解正十六烷的能力通过生长测定和气相色谱/质谱分析来评估。使用GC分析显示，菌株KSS1060能够在6天内降解62％的正十六烷，其中大部分（51.6％）发生在前24小时内。使用16S rDNA序列分析鉴定该十六烷降解细菌。另外，通过使用气相色谱/质谱分析对废水样品的化学组成进行表征，表明存在己醛，苯甲醇，茚满醇，1,2-苯二甲酸二乙酯，邻苯二甲酸二异丁酯和苯酚4,4'- （1-甲基亚乙基）在废水中的主要成分。综上所述，这项研究可以集中在更具成本效益的天然细菌菌株在工业化工厂废水样品大规模生物降解中的应用上，由于其对不同生物体和人类的有害影响，会引起令人困扰的问题。

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