Potential application of aerobic denitrifying bacterium Pseudomonas   aeruginosa PCN-2 in nitrogen oxides (NOx) removal from flue gas

doi:10.1016/j.jhazmat.2016.07.047

CORC > 北京大学 > 环境科学与工程学院

	Potential application of aerobic denitrifying bacterium Pseudomonas aeruginosa PCN-2 in nitrogen oxides (NOx) removal from flue gas
	Zheng, Maosheng ; Li, Can ; Liu, Shufeng ; Gui, Mengyao ; Ni, Jinren
刊名	JOURNAL OF HAZARDOUS MATERIALS
	2016
关键词	NOx removal Flue gas Aerobic denitrification Pseudomonas aeruginosa Biotrickling filter SIMULTANEOUS MICROBIAL REMOVAL NITRIC-OXIDE BIOTRICKLING-FILTER GENE-EXPRESSION OFF-GAS DENITRIFICATION N2O TRANSCRIPTION PERFORMANCE REDUCTION
DOI	10.1016/j.jhazmat.2016.07.047
英文摘要	Conventional biological removal of nitrogen oxides (NOx) from flue gas has been severely restricted by the presence of oxygen. This paper presents an efficient alternative for NOx removal at varying oxygen levels using the newly isolated bacterial strain Pseudomonas aeruginosa PCN-2 which was capable of aerobic and anoxic denitrification. Interestingly, nitric oxide (NO), as the obligatory intermediate, was negligibly accumulated during nitrate and nitrite reduction. Moreover, normal nitrate reduction with decreasing NO accumulation was realized under O-2 concentration ranging from 0 to 100%. Reverse transcription and real-time quantitative polymerase chain reaction (RT-qPCR) analysis revealed that high efficient NO removal was attributed to the coordinate regulation of gene expressions including napA (for periplasmic nitrate reductase), nirS (for cytochrome cd(1) nitrite reductase) and cnorB (for NO reductase). Further batch experiments demonstrated the immobilized strain PCN-2 possessed high capability of removing NO and nitrogen dioxide (NO2) at O-2 concentration of 0-10%. A biotrickling filter established with present strain achieved high NO. removal efficiencies of 91.94-96.74% at inlet NO concentration of 100-500 ppm and O-2 concentration of 0-10%, which implied promising potential applications in purifying NO. contaminated flue gas. (C) 2016 Elsevier B.V. All rights reserved.; National Natural Science Foundation of China [21261140336]; Collaborative Innovation Center for Regional Environmental Quality; SCI(E); EI; PubMed; ARTICLE; nijinren@iee.pku.edu.cn; 571-578; 318
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/447856]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Zheng, Maosheng,Li, Can,Liu, Shufeng,et al. Potential application of aerobic denitrifying bacterium Pseudomonas aeruginosa PCN-2 in nitrogen oxides (NOx) removal from flue gas[J]. JOURNAL OF HAZARDOUS MATERIALS,2016.
APA	Zheng, Maosheng,Li, Can,Liu, Shufeng,Gui, Mengyao,&Ni, Jinren.(2016).Potential application of aerobic denitrifying bacterium Pseudomonas aeruginosa PCN-2 in nitrogen oxides (NOx) removal from flue gas.JOURNAL OF HAZARDOUS MATERIALS.
MLA	Zheng, Maosheng,et al."Potential application of aerobic denitrifying bacterium Pseudomonas aeruginosa PCN-2 in nitrogen oxides (NOx) removal from flue gas".JOURNAL OF HAZARDOUS MATERIALS (2016).