| Kinetics of inorganic carbon utilization by microalgal biofilm in a flat plate photoreactor. | |
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MedLine Citation:
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PMID: 13129518 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A kinetic model was developed to describe inorganic carbon utilization by microalgae biofilm in a flat plate photoreactor. The model incorporates the fundamental mechanisms of diffusive mass transport and biological reaction of inorganic carbon by microalgal biofilm. An advanced numerical technique, the orthogonal collocation method and Gear's method, was employed to solve this kinetic model. The model solutions included the concentration profiles of inorganic carbon in the microalgal biofilm, the growths of suspended microalgae and microalgal biofilm, the effluent concentrations of inorganic carbon, and the flux of inorganic carbon from bulk liquid into biofilm. The batch kinetic test was independently conducted to determine biokinetic parameters used in the microalgal biofilm model simulation while initial thickness of microalgal biofilm were assumed. A laboratory-scale flat plate photoreactor with a high recycle flow rate was setup and conducted to verify the model. The volume of photoreactor is 60 l which yields a hydraulic retention time of 1.67 days. The model-generated inorganic carbon and the suspended microalgae concentration curves agreed well with those obtained in the laboratory-scale test. The fixation efficiencies of HCO(3)(-) and CO(2) are 98.5% and 90% at a steady-state condition, respectively. The concentration of suspended microalgal cell reached up to 12 mg/l at a maximum growth rate while the thickness of microalgal biofilm was estimated to be 104 microm at a steady-state condition. The approaches of experiments and model simulation presented in this study could be employed for the design of a flat plate photoreactor to treat CO(2) by microalgal biofilm in a fossil-fuel power plant. |
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Authors:
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Yen H Lin; Jyh Y Leu; Chi R Lan; P-Hsiu P Lin; Fuh L Chang |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Chemosphere Volume: 53 ISSN: 0045-6535 ISO Abbreviation: Chemosphere Publication Date: 2003 Nov |
Date Detail:
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Created Date: 2003-09-17 Completed Date: 2003-11-28 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0320657 Medline TA: Chemosphere Country: England |
Other Details:
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Languages: eng Pagination: 779-87 Citation Subset: IM |
Affiliation:
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Department of Environmental Program, Development Center for Biotechnology, 81 Chang Hsing Street, Taipei 106, Taiwan. yhlin@mail.dcb.org.tw |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Air Pollutants
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chemistry Algae / growth & development, physiology* Carbon / pharmacokinetics* Carbon Dioxide / chemistry Culture Media Models, Biological* Photobiology / instrumentation Photosynthesis / physiology* Taiwan |
| Chemical | |
Reg. No./Substance:
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0/Air Pollutants; 0/Culture Media; 124-38-9/Carbon Dioxide; 7440-44-0/Carbon |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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