title: Functional consortium for denitrifying sulfide removal process.
abstract: Denitrifying 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.
authors: State Key Laboratory of Water Resource and Environment (SKLWRE), Harbin Institute of Technology, Harbin 150090, China.
authors: Chuan
authors: C
authors: Chen
authors: Nanqi
authors: N
authors: Ren
authors: Aijie
authors: A
authors: Wang
authors: Lihong
authors: L
authors: Liu
authors: Duu-Jong
authors: DJ
authors: Lee
mesh_terms: D020627:Azoarcus / Q000145:classification / Q000235:genetics / Q000254:growth & development / Q000378:metabolism; D017753:Ecosystem; D006090:Gram-Negative Bacteria / Q000145:classification / Q000235:genetics / Q000254:growth & development / Q000378:metabolism; D007220:Industrial Waste; D009566:Nitrates / Q000378:metabolism*; D010084:Oxidation-Reduction; D010230:Paracoccus / Q000145:classification / Q000235:genetics / Q000254:growth & development / Q000378:metabolism; D011549:Pseudomonas / Q000145:classification / Q000235:genetics / Q000254:growth & development / Q000378:metabolism; D020588:Stenotrophomonas / Q000145:classification / Q000235:genetics / Q000254:growth & development / Q000378:metabolism; D013440:Sulfides / Q000378:metabolism*; D020628:Thauera / Q000145:classification / Q000235:genetics / Q000254:growth & development / Q000378:metabolism; D014865:Waste Disposal, Fluid / Q000379:methods; D014871:Water Microbiology
chemical_list: D007220:Industrial Waste; D009566:Nitrates; D013440:Sulfides