Tubular photobioreactor design for algal cultures

被引:365
作者
Molina, E [1 ]
Fernández, J [1 ]
Acién, FG [1 ]
Chisti, Y [1 ]
机构
[1] Univ Almeria, Dept Chem Engn, E-04071 Almeria, Spain
关键词
photobioreactors; microalgae; Phaeodactylum tricornutum;
D O I
10.1016/S0168-1656(01)00353-4
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Principles of fluid mechanics, gas-liquid mass transfer, and irradiance controlled algal growth are integrated into a method for designing tubular photobioreactors in which the culture is circulated by an airlift pump. A 0.2 m(3) photobioreactor designed using the proposed approach was proved in continuous outdoor culture of the microalga Phaeodactylum tricornutum. The culture performance was assessed under various conditions of irradiance, dilution rates and liquid velocities through the tubular solar collector. A biomass productivity of 1.90 g l(-1) d(-1) (or 32 g m(-2) d(-1)) could be obtained at a dilution rate of 0.04 h(-1). Photoinhibition was observed during hours of peak irradiance; the photosynthetic activity of the cells recovered a few hours later. Linear liquid velocities of 0.50 and 0.35 m s(-1) in the solar collector gave similar biomass productivities, but the culture collapsed at lower velocities. The effect of dissolved oxygen concentration on productivity was quantified in indoor conditions; dissolved oxygen levels higher or lower than air saturation values reduced productivity. Under outdoor conditions, for given levels of oxygen supersaturation, the productivity decline was greater outdoors than indoors, suggesting that under intense outdoor illumination photooxidation contributed to loss of productivity in comparison with productivity loss due to oxygen inhibition alone. Dissolved oxygen values at the outlet of solar collector tube were up to 400% of air saturation. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:113 / 131
页数:19
相关论文
共 38 条
[1]  
ABELIOVICH A, 1972, Journal of Bacteriology, V111, P682
[2]  
Aiba S., 1982, ADV BIOCHEM ENG, V23, P85, DOI 10.1201/9781351075657-5
[3]   RADIATION-FIELD MODELING IN PHOTOREACTORS .1. HOMOGENEOUS MEDIA [J].
ALFANO, OM ;
ROMERO, RL ;
CASSANO, AE .
CHEMICAL ENGINEERING SCIENCE, 1986, 41 (03) :421-444
[4]  
[Anonymous], 1999, Encycl. Bioprocess Technol. Fermen. Biocatal. Biosep
[5]   Productivity of Spirulina in a strongly curved outdoor tubular photobioreactor [J].
Carlozzi, P ;
Torzillo, G .
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY, 1996, 45 (1-2) :18-23
[6]   AIRLIFT REACTORS - CHARACTERISTICS, APPLICATIONS AND DESIGN CONSIDERATIONS [J].
CHISTI, MY ;
MOOYOUNG, M .
CHEMICAL ENGINEERING COMMUNICATIONS, 1987, 60 (1-6) :195-242
[7]  
CHISTI Y, 1993, CHEM ENG PROG, V89, P38
[8]  
Chisti Y., 1999, ENCY BIOPROCESS TECH, V5, P2379
[9]  
Chisti Y., 1999, ENCY BIOPROCESS TECH, V3, P1607
[10]  
Contreras A, 1998, BIOTECHNOL BIOENG, V60, P317, DOI 10.1002/(SICI)1097-0290(19981105)60:3<317::AID-BIT7>3.0.CO