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Effect of light supply in photobioreactors on the biomass productivity and energy efficiency of Scenedesmus sp
Production of biofuel from microalgae is an attractive and sustainable option for meeting rising global energy demands and mitigating global warming. However, for commercial production of microalgae to be economically feasible, high biomass productivities and low auxiliary energy inputs must be achi...
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| Format: | Thesis |
| Language: | English |
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Centre for Bioprocess Engineering Research
2015
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| _version_ | 1867613825008664576 |
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| access_status_str | Open Access |
| author | Gani, Aliya Habibti |
| author2 | Harrison, STL |
| author_browse | Gani, Aliya Habibti Harrison, STL |
| author_facet | Harrison, STL Gani, Aliya Habibti |
| author_sort | Gani, Aliya Habibti |
| collection | Thesis |
| description | Production of biofuel from microalgae is an attractive and sustainable option for meeting rising global energy demands and mitigating global warming. However, for commercial production of microalgae to be economically feasible, high biomass productivities and low auxiliary energy inputs must be achieved in large photobioreactors. According to literature, one of the main factors limiting growth is the inefficiency of light utilization (Posten, 2009; Janssen et al., 2003; Carvalho et al., 2006). In a photobioreactor, as biomass concentration and depth of culture increase, the amount of light that is able to penetrate the culture decreases exponentially. This occurs because of mutual shading of algal cells via adsorption of pigments or via scattering of cells. The purpose of this study was to optimize biomass productivity and biomass concentration by developing a thorough understanding of the microalgal response to light. In particular, the effects of light source, light intensity, configuration (internal and external), reactor design and the related variation in light/dark cycling were investigated. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/14155 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:42:17.876Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2015 |
| publishDateRange | 2015 |
| publishDateSort | 2015 |
| publisher | Centre for Bioprocess Engineering Research |
| publisherStr | Centre for Bioprocess Engineering Research |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/14155 Effect of light supply in photobioreactors on the biomass productivity and energy efficiency of Scenedesmus sp Gani, Aliya Habibti Harrison, STL Bioprocess Engineering Production of biofuel from microalgae is an attractive and sustainable option for meeting rising global energy demands and mitigating global warming. However, for commercial production of microalgae to be economically feasible, high biomass productivities and low auxiliary energy inputs must be achieved in large photobioreactors. According to literature, one of the main factors limiting growth is the inefficiency of light utilization (Posten, 2009; Janssen et al., 2003; Carvalho et al., 2006). In a photobioreactor, as biomass concentration and depth of culture increase, the amount of light that is able to penetrate the culture decreases exponentially. This occurs because of mutual shading of algal cells via adsorption of pigments or via scattering of cells. The purpose of this study was to optimize biomass productivity and biomass concentration by developing a thorough understanding of the microalgal response to light. In particular, the effects of light source, light intensity, configuration (internal and external), reactor design and the related variation in light/dark cycling were investigated. 2015-10-06T14:18:18Z 2015-10-06T14:18:18Z 2013 Master Thesis Masters MSc (Eng) http://hdl.handle.net/11427/14155 eng application/pdf Centre for Bioprocess Engineering Research Faculty of Engineering and the Built Environment University of Cape Town |
| spellingShingle | Bioprocess Engineering Gani, Aliya Habibti Effect of light supply in photobioreactors on the biomass productivity and energy efficiency of Scenedesmus sp |
| thesis_degree_str | Master's |
| title | Effect of light supply in photobioreactors on the biomass productivity and energy efficiency of Scenedesmus sp |
| title_full | Effect of light supply in photobioreactors on the biomass productivity and energy efficiency of Scenedesmus sp |
| title_fullStr | Effect of light supply in photobioreactors on the biomass productivity and energy efficiency of Scenedesmus sp |
| title_full_unstemmed | Effect of light supply in photobioreactors on the biomass productivity and energy efficiency of Scenedesmus sp |
| title_short | Effect of light supply in photobioreactors on the biomass productivity and energy efficiency of Scenedesmus sp |
| title_sort | effect of light supply in photobioreactors on the biomass productivity and energy efficiency of scenedesmus sp |
| topic | Bioprocess Engineering |
| url | http://hdl.handle.net/11427/14155 |
| work_keys_str_mv | AT ganialiyahabibti effectoflightsupplyinphotobioreactorsonthebiomassproductivityandenergyefficiencyofscenedesmussp |