Field Applications for NOx Removal from Flue Gas in a Biotrickling Filter by Chelatococcus daeguensis TAD1

Received: December 18, 2012
Revised: March 20, 2013
Accepted: March 20, 2013
Download Citation: RIS|BibTeX|https://doi.org/10.4209/aaqr.2012.12.0352  

Cite this article:
Yang, Y., Huang, S., Zhang, Y. and Xu, F. (2013). Field Applications for NOx Removal from Flue Gas in a Biotrickling Filter by Chelatococcus daeguensis TAD1. Aerosol Air Qual. Res. 13: 1824-1831. https://doi.org/10.4209/aaqr.2012.12.0352

ABSTRACT

In 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 NO_x 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 NO_x 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 NO_x on a large scale under high flue gas temperature.

Keywords: Flue gas; NOx; Biotrickling filter; Aerobic denitrification; Chelatococcus daeguensis TAD1