title: A novel suspended-solid phase photobioreactor to improve biomass production and separation of microalgae.
abstract: A novel suspended-solid phase photobioreactor (ssPBR) was proposed in this paper to solve the problem of microalgal expensive and complex harvest system for biomass/biofuel production. In this ssPBR, solid carriers were added and kept suspended by aeration. Part of microalgae could attach and grow on the carriers. By catching carriers, microalgae could easily be separated from liquid phase. Three kinds of Carriers A, B, C made of cotton, mohair and linen, respectively, were used in this study. Compared with the reactor without carriers, the biomass production in each ssPBR was increased by adding these three kinds of carriers at a dosage of 2g/L, and the maximum increments of biomass were 2.2×10(5) (10.3%), 7.8×10(4) (3.9%) and 4.4×10(5) (20.5%)cells/mL, respectively. By increasing the dosage of Carriers-C to 4g/L, the maximum increment of microalgal biomass could reach up to about 30% in the ssPBR compared with control group.
authors.affiliation: Environmental Simulation and Pollution Control State Key Joint Laboratory, School of Environment, Tsinghua University, Beijing 100084, PR China.
authors.forename: Lin-Lan
authors.initials: LL
authors.lastname: Zhuang
authors.affiliation: Environmental Simulation and Pollution Control State Key Joint Laboratory, School of Environment, Tsinghua University, Beijing 100084, PR China; State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, PR China. Electronic address: hyhu@tsinghua.edu.cn.
authors.forename: Hong-Ying
authors.initials: HY
authors.lastname: Hu
authors.affiliation: Environmental Simulation and Pollution Control State Key Joint Laboratory, School of Environment, Tsinghua University, Beijing 100084, PR China.
authors.forename: Yin-Hu
authors.initials: YH
authors.lastname: Wu
authors.affiliation: Environmental Simulation and Pollution Control State Key Joint Laboratory, School of Environment, Tsinghua University, Beijing 100084, PR China.
authors.forename: Ting
authors.initials: T
authors.lastname: Wang
authors.affiliation: Environmental Simulation and Pollution Control State Key Joint Laboratory, School of Environment, Tsinghua University, Beijing 100084, PR China.
authors.forename: Tian-Yuan
authors.initials: TY
authors.lastname: Zhang
mesh_terms: D018533:Biomass; D018929:Cell Culture Techniques / Q000295:instrumentation* / Q000379:methods*; D058086:Microalgae / Q000254:growth & development* / Q000302:isolation & purification*; D058433:Photobioreactors / Q000382:microbiology*; D044444:Scenedesmus / Q000254:growth & development / Q000302:isolation & purification; D013997:Time Factors
keywords: Attached cultivation; Harvest; Microalgae; Solid carrier; Suspended-solid phase photobioreactor