Dominant bacteria in biofilms of biotricking filter for the bio-purification NO_x in the coal-fired flue gas
Abstract：Bacterial population composition of biofilms in biotrickling filter was analyzed with one culture-independent method by denaturing gradient gel electrophoresis（PCR-DGGE）.It is found that Nitrobacter sp.,Acinetobacter sp.,Thermomonas sp.and Chloroflexus sp.are the dominant species of the biofilms.Nitrobacteria are the primary bacteria which oxidize NOx into NO-3.Autotrophic bacteria that act on the nitrification are symbiotic with heterotrophic microbes.The heterotrophic bacteria besides can relieve organic production inhibition against autotrophic bacteria,but also make the denitrification by generating N2 etc.and simultaneously produced alkaline production.The part mechanism of bio-purification NOx in the coal-fired flue gas in the view of bacterial community at molecular level is disclosed.
Keywords：bio-purification coal-fired flue gasNOxbiofilmsdominant bacteriaPCR-DGGEnitrification and denitrification
Publication Date：2011-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)