Assessment of Photosynthetic Carbon Capture versus Carbon Footprint of an Industrial Microalgal Process

Applied Sciences, Journal Year: 2023, Volume and Issue: 13(8), P. 5193 - 5193

Published: April 21, 2023

It is often read that industrial microalgal biotechnology could contribute to carbon capture through photosynthesis. While technically accurate, this claim rarely supported by sound figures nor put in regard the emissions associated with said processes. In view, work provides a quantitative assessment of extent processes compensation for their dioxide emissions. To do so, microalgae were cultivated under photolimited conditions. Their growth dynamic and photosynthetic apparatus status monitored daily cell density measurement fluorescence assays. Ultimate analyses used determine content. Simultaneously, power consumption process was recorded, computed using European electrical production intensity. All all, recorded values confirmed good physiological conditions allowed computing rate, energy storing process. The captured 0.72 ± 0.19 gCO2/day while emitting 182 gCO2/day, on average (over 15 days). photoconversion efficiency 4.34 0.68%. Even if it highly optimized (red/blue LED instead white, example), only 1.02 0.40% its From these figures, stating biotechnological partly compensate emission seems rather bold. Authors should, therefore, emphasize other ecosystemic benefits cultivation, such as phosphorous intake. Finally, we also able evaluate Chlorella vulgaris light dark respiration (0.0377 0.042 day−1 7.42 × 10−3 3.33 day−1), which help assess biomass respiratory activity.

Language: Английский

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Bioremediation of Water Polluted with Dyes from Textile Industries Using Microalgae and Cultivation of Microalgae for Multiple Biorefineries

Published: March 29, 2024

The realization that environmental pollution is a global hazard to human health and deterioration has sparked new initiatives for restoration economic ecological reasons. Numerous contaminants, most notably colors, are present in textile industry wastewater ( WW ). If released without proper treatment, these pollutants can have detrimental consequences on aquatic environments, including harm aesthetics, eutrophication, reduction photosynthetic activity, bioaccumulation of toxins. A potentially effective substitute current treatment WWT ) techniques the cultivation microalgae dye effluent. Dye contaminants remedied during culture by bioconversion/biodegradation or biosorption. dual advantages using as medium (bioremediation CO 2 reduction) lipid production make bioremediation one promising applications biodiesel production. As result, with decreases color nutrient content effluent, which lessens effects its release into environment. In addition, added benefit creating valuable biomass may be converted bioproducts, biofuels, bioenergy, contrast traditional techniques. So, merger multiple biorefineries from will ensure sustainability, energy security, climate action, circular economy.

Language: Английский

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The Effect of Ultraviolet Radiation on Production of Antioxidant Compounds from Bioprospected Acid Tolerant Microalgae Used to Mitigate Industrial CO₂

Industrial Biotechnology, Journal Year: 2024, Volume and Issue: unknown

Published: April 3, 2024

Controlling light exposure (wavelength and intensity) has been shown to increase the cellular production of antioxidants in some species microalgae. However, these stress studies do not typically examine extremophiles, which have produce as a defense mechanism. This study aims effect ultraviolet radiation (UVR) on natural antioxidant compounds (carotenoids, chlorophyll a, b) with ultimate goal improving feasibility industrial CO2 mitigation. Three strains microalgae were bioprospected from low pH (<4) mining impacted water bodies Ontario, Canada. found that naturally higher levels compared culture collection strains. decreasing pH, would happen off-gas application, resulted decreased concentration activity, exception: strain M2 maintained high activities at both unregulated pH. UVR treatments tested, consisting 10 h different recovery periods. Treatments increased concentrations samples initially concentrations, continuing for up 48 after exposure. A concurrent activity was also determined based ABTS radical scavenging ferric reducing power. Furthermore, this identifies promising (M2) could simultaneously health beneficial mitigate emissions.

Language: Английский

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Bimetallic oxide electrocatalyst with interfacial structure for enhanced electrocatalytic CO2 reduction

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 1001, P. 175192 - 175192

Published: June 14, 2024

Language: Английский

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Renewable Residues as Feedstock for Drop-in Biofuel Production

Biofuel and biorefinery technologies, Journal Year: 2024, Volume and Issue: unknown, P. 41 - 74

Published: Jan. 1, 2024

Language: Английский

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