naa a22 4500 510752144 CHVBK 20180411083108.0 cr unu---uuuuu 180411e20130501xx s 000 0 eng 10.1007/s11270-013-1578-1 doi (NATIONALLICENCE)springer-10.1007/s11270-013-1578-1 Anaerobic Biodegradation of Pyrene by Paracoccus denitrificans Under Various Nitrate/Nitrite-Reducing Conditions [Elektronische Daten] [Xunan Yang, Jiaxin Ye, Limei Lyu, Qunhe Wu, Renduo Zhang] As a polycyclic aromatic hydrocarbon (PAH), pyrene is one of hazardous persistent organic pollutants in the aquatic environment. The aim of this study was to investigate the influence of denitrifying conditions on pyrene degradation in a pure culture. With a strain isolated from petrol-contaminated river sediment, treatments of pyrene biodegradations were set up using various ratios of nitrate to nitrite (NO3 −/NO2 −). Results showed that various NO3 −/NO2 − conditions significantly influenced the anaerobic pyrene degradation efficiency. Nitrite could induce the complete denitrification process so that NO2 − acted as a key factor to promote high degradation efficiency. The low N treatment of NO3 − and NO2 − concentrations made the denitrifying-pyrene-degradation process more effective. Additionally, high C/N value stimulated high degradation rates. High concentrations of NO3 − and NO2 − as well as toxic intermediate product accumulation might inhibit the bacterial growth and biodegradation process. The information from this study should be useful to design bioremediation strategies of PAH. Springer Science+Business Media Dordrecht, 2013 Pyrene degradation nationallicence Denitrification nationallicence Paracoccus denitrificans nationallicence C/N nationallicence Yang Xunan School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, 510275, Guangzhou, Guangdong, People's Republic of China aut Ye Jiaxin School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, 510275, Guangzhou, Guangdong, People's Republic of China aut Lyu Limei School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, 510275, Guangzhou, Guangdong, People's Republic of China aut Wu Qunhe School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, 510275, Guangzhou, Guangdong, People's Republic of China aut Zhang Renduo School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, 510275, Guangzhou, Guangdong, People's Republic of China aut Water, Air, & Soil Pollution Springer Netherlands 224/5(2013-05-01), 1-10 0049-6979 224:5<1 2013 224 11270 https://doi.org/10.1007/s11270-013-1578-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11270-013-1578-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yang Xunan School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, 510275, Guangzhou, Guangdong, People's Republic of China aut NATIONALLICENCE 700 1- Ye Jiaxin School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, 510275, Guangzhou, Guangdong, People's Republic of China aut NATIONALLICENCE 700 1- Lyu Limei School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, 510275, Guangzhou, Guangdong, People's Republic of China aut NATIONALLICENCE 700 1- Wu Qunhe School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, 510275, Guangzhou, Guangdong, People's Republic of China aut NATIONALLICENCE 700 1- Zhang Renduo School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, 510275, Guangzhou, Guangdong, People's Republic of China aut NATIONALLICENCE 773 0- Water, Air, & Soil Pollution Springer Netherlands 224/5(2013-05-01), 1-10 0049-6979 224:5<1 2013 224 11270 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer