A novel photobioreactor structure using optical fibers as inner light source to fulfill flashing light effects of microalgae.

In this work, a novel photobioreactor structure using optical fibers being fixed vertically to culture flow direction as inner light source was proposed to fulfill flashing light effects (FLE) of microalgae, so as to obtain high light efficiency. Three types of optical-fiber photobioreactor fulfilling FLE of microalgae, i.e. air-driven panel, pump-driven panel and stirred tank type, were proposed and a 130 L airlift panel one was practically constructed on which both cold (light profile, liquid velocity) and hot model tests were carried out. Results demonstrated that it could produce uniformed light/dark frequencies being over 10 Hz and microalgae productivity increased by 43% and 38% for Spirulina platensis and Scenedesmus dimorphus respectively, compared with the control. This suggested the structure to be a viable and promising option for future photobioreactors.

[1]  K. Mori,et al.  Photoautotrophic bioreactor using visible solar rays condensed by fresnel lenses and transmitted through optical fibers , 1986 .

[2]  Hui Wang,et al.  Attached cultivation technology of microalgae for efficient biomass feedstock production. , 2013, Bioresource technology.

[3]  T. Matsunaga,et al.  An optical fibre photobioreactor for enhanced production of the marine unicellular alga Isochrysis aff. galbana T-Iso (UTEX LB 2307) rich in docosahexaenoic acid , 1993, Applied Microbiology and Biotechnology.

[4]  U. Schmid-Staiger,et al.  A novel airlift photobioreactor with baffles for improved light utilization through the flashing light effect. , 2001, Journal of biotechnology.

[5]  J Tramper,et al.  Efficiency of light utilization of Chlamydomonas reinhardtii under medium-duration light/dark cycles. , 2000, Journal of biotechnology.

[6]  Johannes Tramper,et al.  Enclosed outdoor photobioreactors: light regime, photosynthetic efficiency, scale-up, and future prospects. , 2003, Biotechnology and bioengineering.

[7]  Ronen,et al.  Light/dark cycles in the growth of the red microalga porphyridium sp , 1998, Biotechnology and bioengineering.

[8]  I. Suh,et al.  Cultivation of a cyanobacterium in an internally radiating air-lift photobioreactor , 2001, Journal of Applied Phycology.

[9]  Mathieu Streefland,et al.  Photosynthetic efficiency of Chlamydomonas reinhardtii in flashing light , 2011, Biotechnology and bioengineering.

[10]  K. Terry,et al.  Photosynthesis in modulated light: Quantitative dependence of photosynthetic enhancement on flashing rate , 1986, Biotechnology and bioengineering.

[11]  J. An,et al.  Biological desulfurization in an optical-fiber photobioreactor using an automatic sunlight collection system. , 2000, Journal of biotechnology.

[12]  J. Myers,et al.  Growth Rate of Chlorella in Flashing Light. , 1954, Plant physiology.

[13]  Zhenfeng Su,et al.  Growth of Spirulina platensis enhanced under intermittent illumination. , 2011, Journal of biotechnology.

[14]  Indoor illumination by solar light collectors , 2008 .

[15]  Lishan Yao,et al.  Simulation of the light evolution in an annular photobioreactor for the cultivation of Porphyridium cruentum , 2012 .

[16]  René H. Wijffels,et al.  Design Process of an Area-Efficient Photobioreactor , 2008, Marine Biotechnology.

[17]  Johannes Tramper,et al.  Microalgae cultivation in air-lift reactors: modeling biomass yield and growth rate as a function of mixing frequency. , 2003, Biotechnology and bioengineering.

[18]  T. Matsunaga,et al.  Glutamate production from CO2 by marine cyanobacterium Synechococcus sp. using a novel biosolar reactor employing light-diffusing optical fibers , 1991 .

[19]  R. Buchholz,et al.  Light energy supply in plate-type and light diffusing optical fiber bioreactors , 1995, Journal of Applied Phycology.

[20]  R. Sims,et al.  Production and harvesting of microalgae for wastewater treatment, biofuels, and bioproducts. , 2011, Biotechnology advances.

[21]  Y. Chisti.  Biodiesel from microalgae. , 2007, Biotechnology advances.

[22]  A. Carvalho,et al.  Microalgal Reactors: A Review of Enclosed System Designs and Performances , 2006, Biotechnology progress.

[23]  W. Cong,et al.  Study of hydrodynamic characteristics in tubular photobioreactors , 2013, Bioprocess and Biosystems Engineering.

[24]  T. Matsunaga,et al.  CO2 removal by high-density culture of a marine cyanobacterium synechococcus sp. using an improved photobioreactor employing light-diffusing optical fibers , 1992 .

[25]  J. Ogbonna,et al.  An integrated solar and artificial light system for internal illumination of photobioreactors. , 1999, Journal of biotechnology.

[26]  Farida El Yousfi,et al.  Photoautotrophic consumption of phosphorus by Scenedesmus obliquus in a continuous culture. Influence of light intensity , 1999 .

[27]  Clemens Posten,et al.  Simulations of light intensity variation in photobioreactors. , 2007, Journal of biotechnology.

[28]  Hiroshi Saiki,et al.  Development of a photobioreactor incorporating Chlorella sp. for removal of CO2 in stack gas , 1997 .

[29]  Clemens Posten,et al.  Closed photo-bioreactors as tools for biofuel production. , 2009, Current opinion in biotechnology.

[30]  Nagamany Nirmalakhandan,et al.  Energy-efficient photobioreactor configuration for algal biomass production. , 2012, Bioresource technology.

[31]  W. Cong,et al.  Hydrodynamic characteristics and microalgae cultivation in a novel flat‐plate photobioreactor , 2013, Biotechnology progress.

[32]  K. C. Das,et al.  Biomass and bioenergy production potential of microalgae consortium in open and closed bioreactors using untreated carpet industry effluent as growth medium. , 2010, Bioresource technology.