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https://hdl.handle.net/10356/39650
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DC Field | Value | Language |
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dc.contributor.author | Goh, Yvonne Qian Ru. | - |
dc.date.accessioned | 2010-06-02T02:49:08Z | - |
dc.date.available | 2010-06-02T02:49:08Z | - |
dc.date.copyright | 2010 | en_US |
dc.date.issued | 2010 | - |
dc.identifier.uri | http://hdl.handle.net/10356/39650 | - |
dc.description.abstract | This study focuses on the investigation of effects of light on growth of microalgae Chlorella sp. ATCC 14854. Pre-experimental phase involved medium selection, medium modification and the determination of optimal temperature and pH range suitable for growth. It was found that R-medium was best suited for growth of Chlorella sp. ATCC 14854; and the optimal temperatures were 28±1°C and pH 6 respectively. R-medium was further modified to yield higher concentrations of iron, magnesium, nitrogen and phosphorus so as to eliminate nutrient limitation or imbalance. Effects of short duration mixing-induced light/dark cycling were studied at four average surface light intensities -- 82μmol/m2.s, 260μmol/m2.s, 370μmol/m2.s and 590μmol/m2.s. Using 82μmol/m2.s, growth performances using both draft tube sizes almost paralleled. However, it was found that the 74mm draft tube runs with a longer cycle time of 1.2s and smaller light fraction of 0.48 outperformed the 54mm draft tube runs with a shorter cycle time of 1.0s and a larger light fraction of 0.72. Results suggested that a light/dark cycling becomes important for higher light fluxes, and longer dark time in relation to light time promoted better growth performance. Lumostatic operations were also investigated based on two light-control parameters—optimal surface light intensity and critical average surface light intensity, where the latter was herein proposed based on investigation of trend of chlorophyll a content. Further work will need to be done to ascertain the superiority of either method. | en_US |
dc.format.extent | 115 p. | en_US |
dc.language.iso | en | en_US |
dc.rights | Nanyang Technological University | - |
dc.subject | DRNTU::Engineering::Chemical engineering::Biotechnology | en_US |
dc.title | Optimization of photobioreactor for production of biodiesel part ii : effect of light on microalgae | en_US |
dc.type | Final Year Project (FYP) | en_US |
dc.contributor.supervisor | Lau Wai Man | en_US |
dc.contributor.school | School of Chemical and Biomedical Engineering | en_US |
dc.description.degree | Bachelor of Engineering (Chemical and Biomolecular Engineering) | en_US |
dc.contributor.supervisor2 | Lau Wai Man | en_US |
dc.contributor.supervisor2 | Chen Wei Ning, William | en_US |
item.fulltext | With Fulltext | - |
item.grantfulltext | restricted | - |
Appears in Collections: | SCBE Student Reports (FYP/IA/PA/PI) |
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File | Description | Size | Format | |
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scbe059.pdf Restricted Access | 1.29 MB | Adobe PDF | View/Open |
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