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Enhancing the sustainability of microalgae biomass generation for production of alpha-linolenic acid via integration of reverse osmosis (ro) reject streams

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dc.contributor.author Wickramasinghe, S
dc.contributor.author Ovitigala, M
dc.contributor.author Ariyadasa, TU
dc.contributor.editor Walpalage, S
dc.contributor.editor Gunawardena, S
dc.contributor.editor Narayana, M
dc.contributor.editor Gunasekera, M
dc.date.accessioned 2024-03-26T05:53:50Z
dc.date.available 2024-03-26T05:53:50Z
dc.date.issued 2023-08-17
dc.identifier.isbn 978-955-9027-84-3
dc.identifier.uri http://dl.lib.uom.lk/handle/123/22399
dc.description.abstract Industrial reverse osmosis (RO) reject streams are a significant source of pollution in surface water bodies and requires effective treatment. Microalgae-based treatment of RO reject streams is an interesting approach as it generates valuable biomass concurrent to bioremediation. This approach also enhances the sustainability of microalgae biomass production by eliminating the requirement of external nutrient supply and reducing the freshwater footprint. However, there is a significant gap in research on utilization of RO reject streams generated by food/pharmaceutical industries for synthesis of microalgaebased high-value bioproducts. The current study was performed to ascertain the potential of using RO reject streams from the local food (RO1) and pharmaceutical (RO2) industries to cultivate Desmodesmus sp. for synthesis of alpha-linolenic acid. Accordingly, a screening experiment was conducted by growth of Desmodesmus sp. in RO1 and RO2 under dilutions of 25%, 50%, 75% and 100% (undiluted sample). Results showed that the highest biomass yields were obtained in 100% RO1 and 100% RO2. Thereafter, Desmodesmus sp. was cultured in 100% RO1 and 100% RO2 using photobioreactors with Modified Bold’s Basal media (3N-BBM) used as the control. Results showed that the use of RO reject streams resulted in a positive effect on the growth and biochemical composition of Desmodesmus sp. The high lipid content in biomass showcased that the use of RO reject streams could enhance the sustainability of microalgae-based alpha-linolenic acid production. However, further research is needed to study the toxicology effects and assess the techno-economic feasibility of using RO reject as the growth media. en_US
dc.language.iso en en_US
dc.publisher Department of Chemical & Process Engineering University of Moratuwa. en_US
dc.subject Reverse osmosis (RO) reject en_US
dc.subject Desmodesmus sp en_US
dc.subject Microalgae cultivation en_US
dc.subject Alpha-linolenic acid en_US
dc.subject freshwater footprint en_US
dc.title Enhancing the sustainability of microalgae biomass generation for production of alpha-linolenic acid via integration of reverse osmosis (ro) reject streams en_US
dc.type Conference-Abstract en_US
dc.identifier.faculty Engineering en_US
dc.identifier.department Department of Chemical and Process Engineering en_US
dc.identifier.year 2023 en_US
dc.identifier.conference ChemECon 2023 Solutions worth spreading en_US
dc.identifier.place Katubedda en_US
dc.identifier.pgnos p. 19 en_US
dc.identifier.proceeding Proceedings of ChemECon 2023 Solutions worth spreading en_US
dc.identifier.email thilini@uom.lk en_US


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