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Simulation of Membrane-photobioreactor for Carbon Dioxide Removal by Microalgal Photosynthesis
Technical Paper
2006-01-2074
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Elevated CO2 level in the closed space or room has much been concerned. Control of CO2 within certain range is one of the most important contents in the life support system. In this paper, a 10 liter membrane-photobioreactor operated with dead end mode was prepared to remove CO2 from air by using the photosynthetic alga, Chlorella vulgaris. The results showed that gas exchange efficiency was improved greatly when the membrane module was adopted. Compared to that in the ordinary photobioreactor, not only the retention time of the smaller and more uniform gas bubble is increased from 2 s to more than 20 s, but also the dissolved oxygen (DO) dropped by a factor of 30, resulting in that the CO2 fixation rate was enhanced 2 from 80 to 260 mg l-1 h-1. When the operating condition was controlled: cell density of 2.0×107 cells ml-1, inlet gas rate of 3 l min-1, and light intensity of 165 μE m-2 s--1 at 25∼ 30 °C, 1.0 % CO2 in the aeration gas could be reduced to 0.3% in the discharged gas; and for room air (0.04% CO2), the CO2 concentration could be decreased to the boundary value.
Taking account of conditions including the velocity of flow, the degree of mixing, the gas-liquid mass transfer and the rate of photosynthesis, the corresponding model for prediction of DO and pH in airlift column photobioreactor used for culturing microalgae was developed. Experimental data were also used to verify the model which could potentially be applied to rational design of the photobioreactor and removal of CO2.
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Authors
Citation
Cheng, L., Cheng, G., Zhang, L., Chen, H. et al., "Simulation of Membrane-photobioreactor for Carbon Dioxide Removal by Microalgal Photosynthesis," SAE Technical Paper 2006-01-2074, 2006, https://doi.org/10.4271/2006-01-2074.Also In
References
- Steinberg M. History of CO 2 greenhouse gas mitigation technologies Energy Convers Mgmt . 33 1992 311 315
- Miya A Adachi T Umeda I Preliminary study on microalgae culturing reactor for carbon dioxide elimination and oxygen recovery system SAE Transactions
- Cheng L H Zhang L Chen H L Gao C J Advances on CO 2 fixation by microalgae Chinese Journal of Biotechnology 2005 21 178 181
- Adachi T Miya A. Microalgae culturing reactor for carbon dioxide elimination and oxygen recover -- CO 2 fixation activity under various irradiation cycle SAE Transactions , 941412
- Adachi T Miya A Taniguchi S Experimental study for construction of microalgae culturing system to eliminate CO 2 and O 2 regeneration in the closed air: Elimination of CO 2 and regeneration of O 2 using