title: Concentrated microalgae cultivation in treated sewage by membrane photobioreactor operated in batch flow mode.
abstract: This study investigated the microalgae biomass production and nutrients removal efficiency from treated sewage by newly developed membrane photobioreactor in which Chlorella vulgaris was cultured in batch flow mode. Its performance was compared with conventional photobioreactor. The results show that the volumetric microalgae productivity was 39.93 and 10.36 mg L(-1)d(-1) in membrane photobioreactor and conventional photobioreactor, respectively. The nutrients removal rate in membrane photobioreactor was 4.13 mg N L(-1)d(-1) and 0.43 mg P L(-1)d(-1), which was obviously higher than that in conventional photobioreactor (0.59 mg N L(-1)d(-1) and 0.08 mg P L(-1)d(-1)). The better performance of membrane photobioreactor was due to the submerged membrane module in the reactor which acted as a solid-liquid separator and thereby enabled the reactor to operate with higher supply flow rate of cultivation medium. Moreover, in the outflow stage of the membrane photobioreactor, the microalgae culture liquor in the reactor could be further concentrated.
authors.affiliation: College of Marine Science and Technology, Zhejiang Ocean University, Zhoushan 316000, China; College of Environmental Science and Engineering, Hunan University, Changsha 410082, China. Electronic address: gf_hd@126.com.
authors.forename: Feng
authors.initials: F
authors.lastname: Gao
authors.affiliation: College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China.
authors.forename: Zhao-Hui
authors.initials: ZH
authors.lastname: Yang
authors.affiliation: College of Marine Science and Technology, Zhejiang Ocean University, Zhoushan 316000, China.
authors.forename: Chen
authors.initials: C
authors.lastname: Li
authors.affiliation: College of Marine Science and Technology, Zhejiang Ocean University, Zhoushan 316000, China.
authors.forename: Yu-jie
authors.initials: YJ
authors.lastname: Wang
authors.affiliation: College of Marine Science and Technology, Zhejiang Ocean University, Zhoushan 316000, China.
authors.forename: Wei-hong
authors.initials: WH
authors.lastname: Jin
authors.affiliation: College of Marine Science and Technology, Zhejiang Ocean University, Zhoushan 316000, China.
authors.forename: Yi-bing
authors.initials: YB
authors.lastname: Deng
mesh_terms: D061249:Batch Cell Culture Techniques / Q000295:instrumentation* / Q000379:methods*; D018533:Biomass; D048408:Chlorella vulgaris / Q000254:growth & development / Q000378:metabolism; D008567:Membranes, Artificial; D058086:Microalgae / Q000254:growth & development*; D009584:Nitrogen / Q000032:analysis; D010758:Phosphorus / Q000032:analysis; D058433:Photobioreactors / Q000382:microbiology*; D012722:Sewage / Q000382:microbiology*
chemical_list: D008567:Membranes, Artificial; D012722:Sewage; D010758:Phosphorus; D009584:Nitrogen
keywords: Chlorella vulgaris; Membrane photobioreactor; Microalgae culture; Nutrients removal; Treated sewage