Conversion of wastewater-originated waste grease to polyunsaturated fatty acid-rich algae with phagotrophic capability

Xiao, Suo; Ju, Lu‐Kwang

doi:10.1007/s00253-018-9477-4

Cited by 5 publications

(2 citation statements)

References 40 publications

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“…For instance, in a study of Choong et al (2020) the grease wastewater used as a culture medium enhanced lipid content in Scenedesmus and Tetraselmis [ 29 ]. Additionally, Ochromonas danica grown with waste grease as a culture medium accumulated intracellular lipids between 48% and 79% w w −1 [ 29 , 30 , 31 ]. Nevertheless, attention should be paid to the wastewater turbidity and pollutant concentration.…”

Section: Phycoremediation Of Wastewatermentioning

confidence: 99%

Revalorization of Microalgae Biomass for Synergistic Interaction and Sustainable Applications: Bioplastic Generation

et al. 2022

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Microalgae and cyanobacteria are photosynthetic microorganisms’ sources of renewable biomass that can be used for bioplastic production. These microorganisms have high growth rates, and contrary to other feedstocks, such as land crops, they do not require arable land. In addition, they can be used as feedstock for bioplastic production while not competing with food sources (e.g., corn, wheat, and soy protein). In this study, we review the macromolecules from microalgae and cyanobacteria that can serve for the production of bioplastics, including starch and glycogen, polyhydroxyalkanoates (PHAs), cellulose, polylactic acid (PLA), and triacylglycerols (TAGs). In addition, we focus on the cultivation of microalgae and cyanobacteria for wastewater treatment. This approach would allow reducing nutrient supply for biomass production while treating wastewater. Thus, the combination of wastewater treatment and the production of biomass that can serve as feedstock for bioplastic production is discussed. The comprehensive information provided in this communication would expand the scope of interdisciplinary and translational research.

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Section: Phycoremediation Of Wastewatermentioning

confidence: 99%

Revalorization of Microalgae Biomass for Synergistic Interaction and Sustainable Applications: Bioplastic Generation

et al. 2022

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“…In nature, phagotrophic flagellates are responsible for bacterial predation and population control in aquatic environment (Bird & Kalff, 1986;Sanders & Porter, 1988). The use of phagotrophic algae such as Ochromonas danica has been studied recently for the potential of producing algal biomass and products using waste organics in waste ketchup (Lin et al, 2014), waste cooking oil (Hosseini & Ju, 2015), solid waste grease (Xiao & Ju, 2019), and wastewater (Li & Ju, 2018). O. danica is known for producing and accumulating high contents of lipids (Lin et al, 2019) including polyunsaturated fatty acids (PUFAs) such as αlinolenic (C18:3n3), γlinolenic (C18:3n6), eicosatrienoic (C20:3n3), and arachidonic (C20:4n6) acids (Abomohra et al, 2014;Haines et al, 1962;Xiao & Ju, 2019).…”

Section: Introductionmentioning

confidence: 99%

Application of phagotrophic algae in waste activated sludge conversion and stabilization

Xiao

Woo²,

Goldhardt³

et al. 2021

Water Environment Research

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Phagotrophic algae can consume bacteria that are the predominant microorganisms present in the waste activated sludge (WAS) generated from municipal wastewater treatment processes. In this study, we developed a combined ultrasonicationphagotrophic algal process for WAS conversion. The ultrasonic pretreatment released small volatile solids (VS) including bacteria from WAS flocs. A phagotrophic alga Ochromonas danica then grew by consuming more than 80% of the released VS, with approximately 30% (w/w) algal cell yield. The process reduced the overall WAS VS by 42.4% in 1 day, comparing very favorably with the 27% reduction in 10 days by aerobic digestion. For stabilizing the solids remaining from the ultrasonic step, the total oxygen uptake required was 65%-92% lower than that for the original WAS, indicating substantially reduced aeration cost. Overall, this novel process enhanced the WAS digestion at lower energy requirements and produced microalgae for other potential uses. © 2021 Water Environment Federation • Practitioner points• At least 80% of released VS from WAS can be processed by phagotrophic algae.• Significant amounts of algae can be produced from WAS.• Ultrasonication-phagotrophic algal process can make sludge management more sustainable.

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Potential applications of algae in biochemical and bioenergy sector

et al. 2021

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Conversion of wastewater-originated waste grease to polyunsaturated fatty acid-rich algae with phagotrophic capability

Cited by 5 publications

References 40 publications

Revalorization of Microalgae Biomass for Synergistic Interaction and Sustainable Applications: Bioplastic Generation

Revalorization of Microalgae Biomass for Synergistic Interaction and Sustainable Applications: Bioplastic Generation

Application of phagotrophic algae in waste activated sludge conversion and stabilization

Potential applications of algae in biochemical and bioenergy sector

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