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Parameterising and developing models for the use of microalgae as a feedstock for biofuels and valuable chemicals production. / Jiyuan Sui

Swansea University Author: Jiyuan Sui

Abstract

"With the development of photobioreactor technology, microalgal culture has been proposed for various purposes in the past decades. However, primarily due to the low productivity, challenge remains to scale up from laboratory studies to mass cultivation. The increasing interest of using microal...

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Published: 2013
Institution: Swansea University
Degree level: Doctoral
Degree name: Ph.D
URI: https://cronfa.swan.ac.uk/Record/cronfa42610
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first_indexed 2018-08-02T18:55:07Z
last_indexed 2018-08-03T10:10:36Z
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spelling 2018-08-02T16:24:29.8369989 v2 42610 2018-08-02 Parameterising and developing models for the use of microalgae as a feedstock for biofuels and valuable chemicals production. 1d5a3dcba85a3e89d0560b93f3b08645 NULL Jiyuan Sui Jiyuan Sui true true 2018-08-02 "With the development of photobioreactor technology, microalgal culture has been proposed for various purposes in the past decades. However, primarily due to the low productivity, challenge remains to scale up from laboratory studies to mass cultivation. The increasing interest of using microalgae for biodiesel production has put this challenge back on the priority list. In this investigation, fatty acid composition of Nannochloropsis oculata (Droop) (CCAP 849/1) in relation to elemental stoichiometry has been studied and used to inform the development of algal growth models. Through tuning C;N and Chl:C ratios, a model description can be made regulating total fatty acid content and polyunsaturated fatty acid content respectively. This quota-based model also mechanistically describes the dynamics of nutrient (nitrate and phosphate) uptake and depth integrated photosynthesis with growth. When used in a generic descriptive mode, with a bulk description of energy reserve (excess-C), the model was used to evaluate the potential biomass and biofuels production and used to explore the options of optimization of biomass and biofuel productivity from a "typical" microalga under various operational scenarios in a bioreactor. Data from experiments using Nannochloropsis oculata (Droop) (CCAP 849/1) were used to parameterize this bioreactor model. The model fits the data in general terms except for phosphate uptake, probably due to the phosphate precipitation in seawater. While the development of a fully functional model of microalgae growth capable of describing biochemical stoichiometry is still in its infancy. The work described here indicates the potential value and scope of developing the functional model of microalgae growth for biofuels and valuable chemicals production." E-Thesis Chemical engineering.;Bioengineering.;Alternative Energy. 31 12 2013 2013-12-31 COLLEGE NANME Biosciences COLLEGE CODE Swansea University Doctoral Ph.D 2018-08-02T16:24:29.8369989 2018-08-02T16:24:29.8369989 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences Jiyuan Sui NULL 1 0042610-02082018162508.pdf 10805368.pdf 2018-08-02T16:25:08.0270000 Output 4098911 application/pdf E-Thesis true 2018-08-02T16:25:08.0270000 false
title Parameterising and developing models for the use of microalgae as a feedstock for biofuels and valuable chemicals production.
spellingShingle Parameterising and developing models for the use of microalgae as a feedstock for biofuels and valuable chemicals production.
Jiyuan Sui
title_short Parameterising and developing models for the use of microalgae as a feedstock for biofuels and valuable chemicals production.
title_full Parameterising and developing models for the use of microalgae as a feedstock for biofuels and valuable chemicals production.
title_fullStr Parameterising and developing models for the use of microalgae as a feedstock for biofuels and valuable chemicals production.
title_full_unstemmed Parameterising and developing models for the use of microalgae as a feedstock for biofuels and valuable chemicals production.
title_sort Parameterising and developing models for the use of microalgae as a feedstock for biofuels and valuable chemicals production.
author_id_str_mv 1d5a3dcba85a3e89d0560b93f3b08645
author_id_fullname_str_mv 1d5a3dcba85a3e89d0560b93f3b08645_***_Jiyuan Sui
author Jiyuan Sui
author2 Jiyuan Sui
format E-Thesis
publishDate 2013
institution Swansea University
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Biosciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Biosciences
document_store_str 1
active_str 0
description "With the development of photobioreactor technology, microalgal culture has been proposed for various purposes in the past decades. However, primarily due to the low productivity, challenge remains to scale up from laboratory studies to mass cultivation. The increasing interest of using microalgae for biodiesel production has put this challenge back on the priority list. In this investigation, fatty acid composition of Nannochloropsis oculata (Droop) (CCAP 849/1) in relation to elemental stoichiometry has been studied and used to inform the development of algal growth models. Through tuning C;N and Chl:C ratios, a model description can be made regulating total fatty acid content and polyunsaturated fatty acid content respectively. This quota-based model also mechanistically describes the dynamics of nutrient (nitrate and phosphate) uptake and depth integrated photosynthesis with growth. When used in a generic descriptive mode, with a bulk description of energy reserve (excess-C), the model was used to evaluate the potential biomass and biofuels production and used to explore the options of optimization of biomass and biofuel productivity from a "typical" microalga under various operational scenarios in a bioreactor. Data from experiments using Nannochloropsis oculata (Droop) (CCAP 849/1) were used to parameterize this bioreactor model. The model fits the data in general terms except for phosphate uptake, probably due to the phosphate precipitation in seawater. While the development of a fully functional model of microalgae growth capable of describing biochemical stoichiometry is still in its infancy. The work described here indicates the potential value and scope of developing the functional model of microalgae growth for biofuels and valuable chemicals production."
published_date 2013-12-31T03:53:18Z
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score 11.035874

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