标题：Optimization of 4-Nitrophenol Degradation by an Isolated Bacterium Anthrobacter sp and the Novel Biodegradation Pathways under Nutrition Deficient Conditions
作者： Tian, J (Tian, Jiang); An, XL (An, Xiaoliang); Liu, JF (Liu, Jiafeng); Yu, CL (Yu, Chenlei); Zhao, RX (Zhao, Ruixue); Wang, J (Wang, Jing); Chen, LZ (Chen, Lanzhou)
来源出版物：JOURNAL OF ENVIRONMENTAL ENGINEERING 卷：144期：4页码:04018012 DOI：10.1061/(ASCE)EE.1943-7870.0001343 出版年： APR 2018
摘要：To systematically understand the effects of the culturing properties and biodegradation reactions on 4-nitrophenol (PNP)-degrading microorganisms, the bacterium YUP-3 was isolated from soil samples with no PNP-pollution history using a novel method. This bacterium was domesticated to utilize PNP as the sole source of carbon and nitrogen in mineral salt medium. Response surface methodology (RSM) was used to select the most important variables from the simultaneous study on PNP degradation after 48h incubation. The theoretical maximum PNP degradation of 100.0% was obtained under optimized conditions, and temperature and PNP initial concentrations were concluded to be significant variables. Under carbon- and nitrogen-deficient conditions, five metabolic products of PNP were identified through gas chromatography-mass spectrometry. Hydrogenation and deoxidation were analyzed as two main reactions through PNP degradation to produce hydroquinone. These results demonstrated the importance of the novel PNP degradation pathway under nutrition deficient conditions and the potential use of this highly effective PNP degrading bacterium.
作者关键词：4-Nitrophenol; Biodegradation; Response surface methodology; Metabolic product; Biodegradation pathway
扩展关键词： RESPONSE-SURFACE METHODOLOGY; SEQUENCING BATCH REACTOR; FENTON-LIKE REACTION; P-NITROPHENOL; STRAIN; KINETICS; TRICHLORFON; HYDROLYSIS; GENE
通讯作者地址：Chen, LZ (reprint author), Wuhan Univ, Sch Resource & Environm Sci, Hubei Key Lab Biomass Resources Chem & Environm B, Wuhan 430079, Hubei, Peoples R China.
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[Tian, Jiang; Yu, Chenlei; Zhao, Ruixue; Wang, Jing; Chen, Lanzhou] Wuhan Univ, Sch Resource & Environm Sci, Hubei Key Lab Biomass Resources Chem & Environm B, Wuhan 430079, Hubei, Peoples R China.
[An, Xiaoliang] Acad Forestry, Hohhot 010010, Inner Mongolia, Peoples R China.
[Liu, Jiafeng] Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430079, Hubei, Peoples R China.
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