Journal article
Improving pH control and carbon dioxide utilisation efficiency in microalgae cultivation systems with the use of a Proportional-integral + dead-zone control strategy
Bioresource Technology Reports, Vol.17, Art. 100917
2022
Abstract
This study investigated the use of an innovative Proportional Integral (PI) + dead-zone control strategy to improve pH control and to overcome the negative environmental impact associated with the currently employed on/off pH control schemes for microalgae cultivation. Scenedesmus sp. grown in anaerobically digested abattoir effluent (ADAE) was used in this study to evaluate the effectiveness of the alternative/advanced control strategy with respect to the on/off control strategy. Results obtained showed that the PI+dead-zone control strategy significantly improved the regulation of the pH level in the pond as evident by noteworthy reductions of key controller performance indicators with respect to the on/off control strategy. Additionally, the advanced control scheme was able to reduce the CO2 usage by a remarkable 59.21% (highest recorded in related literature), resulting in a reduction in CO2 associated costs (approximately 60%) and most importantly, reduction in the amount of greenhouse gas lost to the atmosphere.
Details
- Title
- Improving pH control and carbon dioxide utilisation efficiency in microalgae cultivation systems with the use of a Proportional-integral + dead-zone control strategy
- Authors/Creators
- O.E. Isiramen (Author/Creator)P.A. Bahri (Author/Creator)N.R. Moheimani (Author/Creator)A. Vadiveloo (Author/Creator)H. Shayesteh (Author/Creator)D.A. Parlevliet (Author/Creator)
- Publication Details
- Bioresource Technology Reports, Vol.17, Art. 100917
- Publisher
- Elsevier Ltd.
- Identifiers
- 991005543424207891
- Copyright
- © 2021 Elsevier Ltd.
- Murdoch Affiliation
- School of Engineering and Energy; Harry Butler Institute; School of Environmental and Conservation Sciences; Centre for Water, Energy and Waste; Algae R&D Centre
- Language
- English
- Resource Type
- Journal article
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