Chen C.Ren N.Wang A.Liu L.Lee D.-J.2019-05-142019-05-14201001757598https://scholars.lib.ntu.edu.tw/handle/123456789/408264Denitrifying sulfide removal (DSR) process simultaneously converts sulfide, nitrate, and chemical oxygen demand from industrial wastewaters to elemental sulfur, nitrogen gas, and carbon dioxide, respectively. This investigation utilizes a dilution-to-extinction approach at 10-2 to 10-6 dilutions to elucidate the correlation between the composition of the microbial community and the DSR performance. In the original suspension and in 10 -2 dilution, the strains Stenotrophomonas sp., Thauera sp., and Azoarcus sp. are the heterotrophic denitrifiers and the strains Paracoccus sp. and Pseudomonas sp. are the sulfide-oxidizing denitrifers. The 10-4 dilution is identified as the functional consortium for the present DSR system, which comprises two functional strains, Stenotrophomonas sp. strain Paracoccus sp. At 10-6 dilution, all DSR performance was lost. The functions of the constituent cells in the DSR granules were discussed based on data obtained using the dilution-to-extinction approach. ? 2009 Springer-Verlag.DenitrifierDenitrifying sulfide removalFunctional consortiumjournal article10.1007/s00253-009-2367-z2-s2.0-77149146173https://www.scopus.com/inward/record.uri?eid=2-s2.0-77149146173&doi=10.1007%2fs00253-009-2367-z&partnerID=40&md5=ebf845ff11653f3000e60eda779ce8cd