Microalgal biofuels: Challenges and prospective in the framework of circular bioeconomy

Energy Nexus, Journal Year: 2024, Volume and Issue: unknown, P. 100338 - 100338

Published: Nov. 1, 2024

Language: Английский

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Advancements of astaxanthin production in Haematococcus pluvialis: Update insight and way forward

Biotechnology Advances, Journal Year: 2025, Volume and Issue: unknown, P. 108519 - 108519

Published: Jan. 1, 2025

Language: Английский

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Response patterns of the freshwater green microalgae Kirchneriella obesa (Chlorophyta, Sphaeropleales) to free copper ions

Phycologia, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 9

Published: Jan. 22, 2025

Microalgae can be exposed to a gradual copper (Cu) increase over wide concentration range in the environment, but most studies focus on punctual increases. This research investigates effects of quasi-continuous Cu exposure Kirchneriella obesa, providing new insights thresholds healthy and unhealthy cellular responses. Photosynthesis, cell density, biomolecules were measured at 20 free levels, from environmental toxic (3x10−9 4 x 10−5 mol L−1). Using nonlinear Bayesian regression models, we established mathematical functions describing relationship between measurements level computed credibility intervals for curves. Our findings revealed two distinct physiological response patterns dependent variable. Growth rate gradually decreased with increase, whereas total proteins carbohydrates increased. A steep transition condition was present photosynthetic variables, others exhibited variation. The Cu2+ triggering these changes differed, signalizing varying susceptibility. sensitive variables rETRmax (120 50 μmol e− m−2 s−1) Ek (180 80 photons decrease 6.5 10−8 5 10−7 L−1 Cu2+. Conversely, NPQ demonstrated resilience, increasing steeply 0.2 4.1 1.1 5.0 Overall, photosynthesis more resistant stress than growth rate. offers important into responses common microalga concentrations, reflecting scenario environment.

Language: Английский

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Improving soil properties and microbial communities in copper tailings using montmorillonite-based Chlorella gel beads

The Science of The Total Environment, Journal Year: 2025, Volume and Issue: 974, P. 179232 - 179232

Published: March 30, 2025

Language: Английский

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Biotechnological Potential of Newly Isolated Microalga Strain in Cu and Cr Biosorption from Single and Bimetallic Systems

Water, Journal Year: 2025, Volume and Issue: 17(7), P. 999 - 999

Published: March 28, 2025

The contamination of water by heavy metals is among the main ecological challenges society due to industrialization and urbanization. To overcome this issue, various treatment processes have been developed. Phycoremediation considered a promising strategy offering advantages in terms cost-effectiveness. present work aims investigate cellular responses an isolated green microalga strain (Chlamydomonas sp.) chromium (Cr) copper (Cu) exposure single bimetallic systems. At ½ IC50 concentration, metal removal efficiencies were reported: up 58.11 ± 0.979% for Cu 41.4 0.870% Cr When both combined, efficiency improved 57.71 0.832%, whereas showed minimal variation, reaching 58.43 1.059%. Furthermore, appeared negative effect on cell growth photosynthetic pigment accumulation. An enhancement lipid content microalgae cells after and/or exposure, particularly C14:0, C16:0, C20:0, C18:0, C16:1, C18:1, C20:1, as well polysaccharides, was detected, protein decreased. FTIR analysis that several functional groups could be involved phycoremediation process.

Language: Английский

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Can microalgae-bacteria system started with Chlorella vulgaris treat municipal wastewater without mechanical aeration?

Case Studies in Chemical and Environmental Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 101236 - 101236

Published: May 1, 2025

Language: Английский

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Coupling dairy wastewaters for nutritional balancing and water recycling: sustainable heterologous 2-phenylethanol production by engineered cyanobacteria

Frontiers in Bioengineering and Biotechnology, Journal Year: 2024, Volume and Issue: 12

Published: March 1, 2024

Microalgae biotechnology is hampered by the high production costs and massive usage of water during large-volume cultivations. These drawbacks can be softened high-value compounds adopting metabolic engineering strategies to improve their performances productivity. Today, most sustainable approach exploitation industrial wastewaters for microalgae cultivation, which couples valuable biomass with resource recovery. Among food processing sectors, dairy industry generates largest volume through manufacturing process. effluents are typically rich in dissolved organic matter nutrients, make it a challenging expensive waste stream companies manage. Nevertheless, these represent an appealing microalgal biotechnology. In this study, we propose compound from cyanobacteria. This strategy based on metabolically engineered strain model cyanobacterium Synechococcus elongatus PCC 7942 (already published elsewhere) 2-phenylethanol (2-PE). 2-PE aromatic that widely employed as fragrance cosmetics thanks its pleasant floral scent. First, qualitatively assessed impact four cyanobacterial growth identify promising substrates. Both tank-washing liquid effluent exhausted sludge resulted suitable nutrient sources. Thus, created ideal buffer system combining two while simultaneously providing balanced nutrition completely avoiding need fresh water. The combination 75% 25% fine-tuning ammonium supplementation yielded 180 mg L −1 concentration 0.6 gDW -1 within 10 days. mixture 90% 10% washing produced highest yield (205 ) accumulation (0.7 ), although 16 Through treatments, phosphates were consumed, nitrogen was removed range 74%–77%. Overall, our significantly valorized recycling circularly produce marketable via biotechnology, laying groundwork subsequent implementation scale-up.

Language: Английский

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Growth Characteristics of a Desmodesmus Species from the San Antonio Springs and Its Short-Term Impact on Soil Microbial Dynamics

Life, Journal Year: 2024, Volume and Issue: 14(9), P. 1053 - 1053

Published: Aug. 23, 2024

A new Desmodesmus species was isolated from the largest of San Antonio Springs, Blue Hole, in Antonio, Texas, and characterized for its potential applications sustainable agriculture. The xenic isolate (XB) established by enrichment subcultured to produce axenic (AxB), which identified based on morphological features DNA profiling, confirming close phylogenetic relationship with spp. Growth characteristics, biomass composition, pigment profiles were assessed both isolates along their growth saline conditions a range seasonal Texas temperatures. Both XB AxB exhibited optimal at 25 °C as well robust 37 weakly media (5 g/kg NaCl). Biomass analysis revealed levels carbohydrates, proteins, lipids, chlorophylls, carotenoids comparable other desmids supported classification. Soil studies demonstrated persistence influence microbial activity, indicating this agricultural such soil remediation.

Language: Английский

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Advances in responses of microalgal-bacterial symbiosis to emerging pollutants in wastewater

World Journal of Microbiology and Biotechnology, Journal Year: 2023, Volume and Issue: 40(1)

Published: Dec. 10, 2023

Language: Английский

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Metallic nanoparticles synthesized by algae: Synthetic route, action mechanism, and the environmental catalytic applications

Journal of environmental chemical engineering, Journal Year: 2023, Volume and Issue: 12(1), P. 111742 - 111742

Published: Dec. 17, 2023

Language: Английский

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