从含酚废水中分离出的醋酸钙不动杆菌PA菌株对苯酚的生物降解作用

Liu Zhenghui, Xie Wenyu, Li Dehao, Peng Yang, Li Zesheng, Liu Shusi

Department of Environmental Engineering, School of Environmental and Biological Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China.

Technology Research Center for Petrochemical Resources Clean Utilization of Guangdong Province, Maoming 525000, China.

Int J Environ Res Public Health. 2016 Mar 9;13(3):300. doi: 10.3390/ijerph13030300.

A phenol-degrading bacterium strain PA was successfully isolated from the effluent of petrochemical wastewater. Based on its morphological, physiological and biochemical characteristics, the strain PA was characterized as a Gram-negative, strictly aerobic, nonmotile and short rod-shaped bacterium that utilizes phenol as a sole carbon and energy source. 16S rDNA sequence analysis revealed that this strain is affiliated to Acinetobacter calcoaceticus in the group of Gammaproteobacteria. The strain was efficient in removing 91.6% of the initial 800 mg ∙ L(-1) phenol within 48 h, and had a tolerance of phenol concentration as high as 1700 mg ∙ L(-1). These results indicated that A. calcoaceticus possesses a promising potential in treating phenolic wastewater.

从石化废水排放物中成功分离出一株苯酚降解菌PA。基于其形态、生理和生化特性，菌株PA被鉴定为革兰氏阴性、严格需氧、无运动性的短杆状细菌，它以苯酚作为唯一碳源和能源。16S rDNA序列分析表明，该菌株隶属于γ-变形菌纲中的醋酸钙不动杆菌。该菌株能在48小时内有效去除初始浓度为800 mg ∙ L(-1)的苯酚中的91.6%，并且对高达1700 mg ∙ L(-1)的苯酚浓度具有耐受性。这些结果表明，醋酸钙不动杆菌在处理含酚废水方面具有广阔的应用潜力。