The Effect of Irradiance Related Temperature on Microalgae Growth in a Tubular Photo Bioreactor for Cleaner Energy
- 1 Department of Mathematics, Chittagong University of Engineering & Technology, Chittagong, Bangladesh
- 2 Department of Mechanical Engineering, Chittagong University of Engineering & Technology, Chittagong, Bangladesh
- 3 Center for Sustainable Development, University of Liberal Arts Bangladesh, Dhaka, Bangladesh
- 4 Department of Mathematics, Chittagong University of Engineering & Technology, Chittagong, Bangladesh
Abstract
In microalgae based biofuel technology, the light is one of the important factors for the proper growth of microalgae cells as microalgae is a photosynthetic microorganism. For a large scale outdoor culture the irradiance of sunlight and associated temperature is also need to consider. In this study aims to present computational model of microalgae growth taking effect of solar irradiance and corresponding temperature in a tubular photo bioreactor for an outdoor culture system. We consider the transient behavior of temperature inside the photo bioreactor for a microalgae culture. The optimum range of temperature for outdoor cultivation of microalgae is about 22 ℃ - 27 ℃ and out of this range the microalgae cell growth inhibits. Many correlations have already been established to investigate the algal productivity based on the dynamic conditions of temperature in case of full scale outdoor cultivation. However, none of them are validated yet numerically considering the model as a function of weather conditions, operational behavior and design criteria. A tubular photobioreactor (PBR) with length 20.5 m and radius 0.05 m has taken account as a simulation model. The PBR is horizontally placed as temperature variations can be observed with greater accuracy. As the solar irradiance varies at any geographic latitude for a year and so thus temperature, equations and parameters are established relating the irradiance with the temperature to simulate the effect. We observed some significant effects of temperature on the growth of microalgae. Moreover, for the maximum growth of the cells we should control the surrounding temperature.
- Brennan, L. and Owende, P. (2009) Biofuels from Microalgae—A Review of Technologies for Production, Processing and Extractions of Biofuels and Co-Products, Renewable and Sustainable Energy Reviews, 14, 557-577. https://doi.org/10.1016/j.rser.2009.10.009
- Demirbas, A. (2007) Importance of Biodiesel as Transportation Fuel. Energy Policy, 35, 4661-4670. https://doi.org/10.1016/j.enpol.2007.04.003
- Khanam, I.A. and Deb, U.K. (2016) Calculation of the Average Irradiance and the Microalgae Groeth for a Year at CUET, Bangladesh. American Journal of Computational Mathematics, 6, 237-244. https://doi.org/10.4236/ajcm.2016.63024
- Chisty, Y. (2007) Biodiesel from Microalgae. Biotechnology Advances, 25, 294-306. https://doi.org/10.1016/j.biotechadv.2007.02.001
- Nigam, P.S. and Singh, A. (2011) Production of Liquid Biofuels from Renewable Resources. Progress of Energy & Combustion Science, 37, 52-68. https://doi.org/10.1016/j.pecs.2010.01.003
- Lardon, L., Helias, A., Sialve, B., Steyer, J.-P. and Bernard, O. (2009) Life Cycle Assessment of Biodiesel Production from Microalgae. Environmental Science & Technology, American Chemical Society, 43, 6475-6481. https://doi.org/10.1021/es900705j
- Walker, D.A. (2009) Biofuels, Facts, Fantasy and Feasibility. Journal of Applied Phycology, 21, 509-517. https://doi.org/10.1007/s10811-009-9446-5
- Deb, U.K., Chayantrakom, K. and Lenbury, Y. (2012), Comparison of Single-Phase and Two-Phase Flow Dynamics in the HLTP for Microalgae Culture. International Journal of Mathematics and Computers in Simulation, 6, 496-503.
- Tredici, M.R. (1999) Photo Bioreactors. In: Flickinger, M.C. and Drew, S.W., Eds., Encyclopedia of Bioprocess Technology: Fermentation, Biocatalysis and Bioseparation, Wiley & Sons, New York, 395-419.
- Klemetson, S. and Rogers, G. (1985), Aquaculture Pond Temperature Modelling. Aquaculture Engineering, 4, 191-208. https://doi.org/10.1016/0144-8609(85)90013-5
- Losordo, T.M. and Piedrahita, R.H. (1991) Modelling Temperature Variation and Thermal Stratification in Shallow Aquaculture Ponds. Ecology Model, 54, 189-226.
- Bechet, Q., Shilton, A., Fringer, O.B., Munoz, R. and Guieysse, B. (2010) Universal Temperature Model for Shallow Algal Ponds Provides Improved Accuracy. Environmental Science & Technology, 45, 3702-3709. https://doi.org/10.1021/es1040706
- Bernard, O. and Remond, B. (2012) Validation of a Simple Model Accounting for Light and Temperature Effect on Microalgal Growth. Bioresource Technology, 23, 520-527.