title: Effect of Algal Inoculation on COD and Nitrogen Removal, and Indigenous Bacterial Dynamics in Municipal Wastewater.
abstract: The effects of algal inoculation on chemical oxygen demand (COD) and total nitrogen (TN) removal, and indigenous bacterial dynamics were investigated in municipal wastewater. Experiments were conducted with municipal wastewater inoculated with either Chlorella vulgaris AG10032, Selenastrum gracile UTEX 325, or Scenedesmus quadricauda AG 10308. C. vulgaris and S. gracile as fast growing algae in municipal wastewater, performed high COD and TN removal in contrast to Sc. quadricauda. The indigenous bacterial dynamics revealed by 16S rRNA gene amplification showed different bacterial shifts in response to different algal inoculations. The dominant bacterial genera of either algal case were characterized as heterotrophic nitrifying bacteria. Our results suggest that selection of indigenous bacteria that symbiotically interact with algal species is important for better performance of wastewater treatment.
authors.affiliation: School of Civil and Environmental Engineering, Yonsei University, Seoul 03722, Republic of Korea.
authors.forename: Jangho
authors.initials: J
authors.lastname: Lee
authors.affiliation: Division of Polar Life Sciences, Korea Polar Research Institute, Incheon 21990, Republic of Korea.|Center for Environmental Biotechnology, University of Tennessee, Knoxville, TN 37996-0865, USA.
authors.forename: Jaejin
authors.initials: J
authors.lastname: Lee
authors.affiliation: School of Civil and Environmental Engineering, Yonsei University, Seoul 03722, Republic of Korea.
authors.forename: Sudheer Kumar
authors.initials: SK
authors.lastname: Shukla
authors.affiliation: School of Civil and Environmental Engineering, Yonsei University, Seoul 03722, Republic of Korea.
authors.forename: Joonhong
authors.initials: J
authors.lastname: Park
authors.affiliation: Department of Environmental Engineering, Yonsei University, Wonju 26493, Republic of Korea.
authors.forename: Tae Kwon
authors.initials: TK
authors.lastname: Lee
mesh_terms: D064751:Ammonium Compounds / Q000032:analysis; D001419:Bacteria / Q000235:genetics / Q000254:growth & development / Q000378:metabolism*; D057919:Biological Oxygen Demand Analysis; D058448:Biota; D048408:Chlorella vulgaris / Q000235:genetics / Q000254:growth & development / Q000378:metabolism; D002734:Chlorophyll / Q000032:analysis; D000077194:Chlorophyll A; D000460:Chlorophyta / Q000235:genetics / Q000254:growth & development / Q000378:metabolism; D058086:Microalgae / Q000235:genetics / Q000254:growth & development / Q000378:metabolism*; D056265:Microbial Interactions; D058465:Nitrification; D009584:Nitrogen / Q000378:metabolism*; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D044444:Scenedesmus / Q000235:genetics / Q000254:growth & development / Q000378:metabolism; D014865:Waste Disposal, Fluid; D062065:Wastewater / Q000737:chemistry / Q000382:microbiology*; D014871:Water Microbiology; D014874:Water Pollutants, Chemical / Q000378:metabolism; D018508:Water Purification / Q000379:methods
chemical_list: D064751:Ammonium Compounds; D002734:Chlorophyll; D000077194:Chlorophyll A; D009584:Nitrogen; D012336:RNA, Ribosomal, 16S; D062065:Wastewater; D014874:Water Pollutants, Chemical
keywords: COD and nitrogen removal; algal inoculation; algal-bacterial consortia; bacterial dynamics; municipal wastewater