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Analysis of the cyanobacterial hydrogen photoproduction process via model identification and process simulation


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Publication Date: 2015-02-02

Journal Title: Chemical Engineering Science

Publisher: Elsevier

Volume: 128

Pages: 130-146

Language: English

Type: Article

Metadata: Show full item record

Citation: Zhang, D., Dechatiwongse, P., Del-Rio-Chanona, E. A., Hellgardt, K., Maitland, G. C., & Vassiliadis, V. S. (2015). Analysis of the cyanobacterial hydrogen photoproduction process via model identification and process simulation. Chemical Engineering Science, 128 130-146.

Description: This is the final published version. It first appeared at http://www.sciencedirect.com/science/article/pii/S0009250915000883#.

Abstract: Cyanothece sp. ATCC 51142 is considered a microorganism with the potential to generate sustainable hydrogen in the future. However, few kinetic models are capable of simulating different phases of Cyanothece sp. ATCC 51142 from growth to hydrogen production. In the present study four models are constructed to simulate Cyanothece sp. batch photoproduction process. A dynamic optimisation method is used to determine parameters in the models. It is found that although the piecewise models fit experimental data better, large deviation can be induced when they are used to simulate a process whose operating conditions are different from the current experiments. The modified models are eventually selected in the present study to simulate a two-stage continuous photoproduction process. The current simulation results show that a plug flow reactor (PFR) shows worse performance compared to a continuous stirred-tank reactor (CSTR) in the current operating conditions since it lowers the total hydrogen production. The finding is that nitrate and oxygen concentration change along the direction of culture movement in PFR, and hydrogen is only generated in the zone where both of them are low. The reactor area thereby is not well utilised. Additionally, as hydrogen production rate is primarily influenced by biomass concentration, which increases initially and decreases eventually along the direction of culture movement, the overall hydrogen production rate in a PFR may be lower than that in a CSTR. Finally, in this study fed-batch photoproduction processes are proposed containing only one photobioreactor based on the current simulation.

Keywords: Biohydrogen, Cyanobacteria, Photoproduction, Kinetic models, Process simulation, Bioreactor design

Sponsorship: Solar Hydrogen Project was funded by the UK Engineering and Physical Sciences Research Council (EPSRC), Project reference EP/F00270X/1. The author E.A. del Rio-Chanona funding by CONACyT Scholarship No. 522530 scholarship from the Secretariat of Public Education and the Mexican government.

Identifiers:

This record's URL: http://dx.doi.org/10.1016/j.ces.2015.01.059http://www.repository.cam.ac.uk/handle/1810/247464

Rights: Attribution 2.0 UK: England & Wales

Licence URL: http://creativecommons.org/licenses/by/2.0/uk/





Author: Zhang, DongdaDechatiwongse, PongsathornDel-Rio-Chanona, Ehecatl AntonioHellgardt, KlausMaitland, Geoffrey C.Vassiliadis, Vassilios

Source: https://www.repository.cam.ac.uk/handle/1810/247464



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