Abstract
ABSTRACTIn this study, effects of the initial nitrate, oxygen and carbon sources on the nitrification and denitrification rate were studied in a lab-scale biotrickling filter (l-BF) inoculated with Chelatococcus daeguensis TAD1, and the maximum nitrification and denitrification rate achieved to 30.08 mg-N/L/h and 100.8 mg-N/L/h, respectively. Thereafter, C. daeguensis TAD1 was initially inoculated into a pilot-scale biotrickling filter (p-BF) to remove NOx from the real flue gas of a coal-fired power plant, and a high removal efficiency of 86.7% at about 45–50°C was obtained. Analysis by PCR-DGGE showed that TAD1 was predominant in the biofilm of l-BF, whereas TAD1 in the biofilm of p-BF coexisted with other microbes to remove NOx together. Overall, the present study demonstrated that C. daeguensis TAD1 was firstly found to be one of the best candidates for the efficient treatment of NOx on a large scale under high flue gas temperature.
Highlights
Emissions of nitrogen oxides (NOx, mainly including NO and NO2) have a detrimental effect on ecosystems and human health (Lawrence and Crutzen, 1999)
Effects of the initial nitrate, oxygen and carbon sources on the nitrification and denitrification rate were studied in a lab-scale biotrickling filter (l-BF) inoculated with Chelatococcus daeguensis TAD1, and the maximum nitrification and denitrification rate achieved to 30.08 mg-N/L/h and 100.8 mg-N/L/h, respectively
The present study demonstrated that C. daeguensis TAD1 was firstly found to be one of the best candidates for the efficient treatment of NOx on a large scale under high flue gas temperature
Summary
Emissions of nitrogen oxides (NOx, mainly including NO and NO2) have a detrimental effect on ecosystems and human health (Lawrence and Crutzen, 1999). NOx, together with sulfur dioxide (SO2) are hazardous air pollutants that lead to the formation of acid rain, airborne particulates, and increased ground level ozone. NOx is growing in intensify, due to the burning of a large number of fossil fuels like in power plants and traffic vehicles. Technologies used to treat NOx usually refer to two methods: (1) conventional physico-chemical control systems with the major drawbacks of high operating cost and of possibility of the secondary pollution (Flanagan et al, 2002; Jin et al, 2005); (2) biological techniques with characteristics of high efficiency and low pollution.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
