title: The combined effect of bacteria and Chlorella vulgaris on the treatment of municipal wastewaters.
abstract: Impacts of Chlorella vulgaris with or without co-existing bacteria on the removal of nitrogen, phosphorus and organic matter from wastewaters were studied by comparing the wastewater treatment effects between an algae-bacteria consortium and a stand-alone algae system. In the algae-bacteria system, C.vulgaris played a dominant role in the removal of nitrogen and phosphorus, while bacteria removed most of the organic matter from the wastewater. When treating unsterilized wastewater, bacteria were found to inhibit the growth of algae at >231 mg/L dissolved organic carbon (DOC). Using the algae-bacteria consortium resulted in the removal of 97% NH4(+), 98% phosphorus and 26% DOC at a total nitrogen (TN) level of 29-174 mg/L. The reaction rate constant (k) values in sterilized and unsterilized wastewaters were 2.17 and 1.92 mg NH4(+)-N/(mg algal cell ·d), respectively.
authors: State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China. Electronic address: solidwaste@tongji.edu.cn.
authors: P J
authors: PJ
authors: He
authors: State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.
authors: B
authors: B
authors: Mao
authors: State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.
authors: F
authors: F
authors: Lü
authors: Research and Training Center on Rural Waste Management, Ministry of Housing and Urban-Rural Development of PR China, China.
authors: L M
authors: LM
authors: Shao
authors: Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan; Department of Chemical Engineering, National Taiwan University, Taipei 106, Taiwan.
authors: D J
authors: DJ
authors: Lee
authors: Department of Chemical Engineering, National Cheng Kung University, Tainan 701, Taiwan; Research Center for Energy Technology and Strategy, National Cheng Kung University, Tainan 701, Taiwan; Center for Bioscience and Biotechnology, National Cheng Kung University, Tainan 701, Taiwan.
authors: J S
authors: JS
authors: Chang
mesh_terms: D001419:Bacteria / Q000378:metabolism*; D057919:Biological Oxygen Demand Analysis; D002244:Carbon / Q000737:chemistry; D048408:Chlorella vulgaris / Q000378:metabolism*; D002947:Cities; D007700:Kinetics; D059013:Microbial Consortia; D009584:Nitrogen / Q000737:chemistry; D010758:Phosphorus / Q000737:chemistry; D012044:Regression Analysis; D013696:Temperature; D013997:Time Factors; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater; D014874:Water Pollutants, Chemical / Q000032:analysis; D018508:Water Purification / Q000379:methods*
chemical_list: D002244:Carbon; D009584:Nitrogen; D010758:Phosphorus; D062065:Wastewater; D014874:Water Pollutants, Chemical
keywords: Ammonia removal; Bacteria; Chlorella vulgaris; DOC; Kinetic modeling; MPGB; Municipal wastewaters; PBRs; TN; TP; dissolved organic carbon; microalgae and a bacterium; photobioreactors; total nitrogen; total phosphorous