Holistic valorization of sugar streams from forest and agricultural residues towards the production of fatty acids by the dinoflagellate Crypthecodinium cohnii in fed-batch bioreactors

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: 13(3), P. 116674 - 116674

Published: April 17, 2025

Language: Английский

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Carbon distribution and metabolism mechanism of a novel mixotrophic Chlorella in municipal wastewater

Bioresource Technology, Journal Year: 2025, Volume and Issue: 430, P. 132562 - 132562

Published: April 19, 2025

Language: Английский

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Combination of Exhaust Gas Fermentation Effluent and Dairy Wastewater for Microalgae Production: Effect on Growth and FAME Composition of Chlorella sorokiniana

Microorganisms, Journal Year: 2025, Volume and Issue: 13(5), P. 961 - 961

Published: April 23, 2025

Microalgae cultivation in wastewater is a promising strategy for reducing nutrient loads and generating biomass that can be further exploited. Although microalgae grown under such conditions are not suitable high-value applications, the resulting still valuable uses as biofuels, biofertilizers, or animal feed. In this study, Chlorella sorokiniana was cultivated dairy and, to best of our knowledge, first time spent effluent from gas fermentation, assess its potential sustainable growth medium. Growth kinetics productivity were evaluated at different dilution ratios, it found high concentrations ammonium hexanol undiluted effluents inhibitory, while an optimized 50:50 led highest accumulation (1.96 g L−1) (0.5 L−1 d−1) C. sorokiniana. This significantly reduced nitrogen (100%), phosphate sulfate (68%), carbon (61%) contents, demonstrating effective bioremediation activity. Furthermore, fatty acid profile revealed increased polyunsaturated fraction, enhancing feed supplement. Overall, contributing circular bioeconomy, approach scalable cost-effective, freshwater chemical dependency production.

Language: Английский

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Acetate as a sustainable organic carbon to support mixotrophic growth of Chlorella sorokiniana for alternative protein production

Biomass and Bioenergy, Journal Year: 2025, Volume and Issue: 199, P. 107901 - 107901

Published: April 26, 2025

Language: Английский

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Enhancing the environmental and economic sustainability of heterotrophic microalgae cultivation: Kinetic modelling and screening of alternative carbon sources

Chemical Engineering Journal Advances, Journal Year: 2024, Volume and Issue: 19, P. 100632 - 100632

Published: July 26, 2024

Heterotrophic microalgae cultivation has been suggested to reduce conventional photo-autotrophic microalgal biomass production costs. In heterotrophic cultivation, the most relevant operational costs are constituted by supply of pure substrates used as carbon source (e.g., glucose), and high energy request for culture aeration. addition, suboptimal conditions temperature pH algal productivity, further increasing this work, an attempt was made define more sustainable cost-effective strategies Chlorellaceae Scenedesmaceae. Several by-products from a local confectionery industry were thus screened alternative sources. Manufacturing residues peppermint liquorice candies allowed achieve comparable maximum growth rates (1.44 d-1), yields (0.33 g COD·g COD-1) productivities (370 mg COD·L-1·d-1) those achieved using glucose. A preliminary economic evaluation showed that could be lowered up 85.6% substituting glucose with selected industrial by-products. As fermentation conditions, maintained at relatively low dissolved oxygen (DO) concentrations, in large range values. optimal temperatures (37.0 – 37.2°C), values (6.8 7.4), DO concentrations (> 0.5 1 O2·L-1) identified. On overall, study demonstrated possibility achieving reduction while implementing circular economy principles framework resource recovery during bioremediation organic waste.

Language: Английский

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Synergistic effects of heterotrophic and phototrophic metabolism for Haematococcus lacustris grown under mixotrophic conditions

Journal of Applied Phycology, Journal Year: 2024, Volume and Issue: unknown

Published: July 30, 2024

Abstract Mixotrophic cultivation of Haematococcus lacustris is one the most promising strategies to produce natural astaxanthin. During mixotrophic growth, microalgae assimilate and metabolize organic carbon in addition photosynthetic resulting increased biomass productivity. Several studies have evaluated effect different sources on growth various species. However, knowledge detailed kinetics as a function substrate concentration light intensity lacking. In this study, H. using four under photoautotrophic conditions are described. showed significant differences respect applied achieved maximum specific rates 0.91 ± 0.13, 0.19 0.05, 0.36 0.23 0.05 day −1 , for acetate, methanol, glucose, glycerol, respectively. Optimal at acetate was 1.8 times higher than sum hetero- growth. Furthermore, optimum 1.3 autotrophic Thus, mixotrophy increases tolerance. These results indicate strong interconnection between metabolism activity lay foundation more mathematical models describing . Graphical

Language: Английский

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Heterotrophic upcycling of hydroponic wastewater supplemented with glucose and indole-3-acetic acid into high-quality Chlorella biomass for zero-waste multiproduct microalgal biorefinery

Environmental Technology & Innovation, Journal Year: 2024, Volume and Issue: 36, P. 103813 - 103813

Published: Sept. 4, 2024

Language: Английский

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Phycoremediation of 1,4 dioxane-laden wastewater: A Techno-economic and sustainable development approach

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 370, P. 122387 - 122387

Published: Sept. 7, 2024

Language: Английский

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Bioprocess Design and Evaluation of Hydrothermal Hydrolysates from Sargassum sp. for Enhancing Arthrospira platensis Growth and Protein Content

Processes, Journal Year: 2024, Volume and Issue: 12(6), P. 1122 - 1122

Published: May 29, 2024

The proliferation of Sargassum biomass in various coastal areas has led to environmental and socio-economic problems. However, due their unique composition, these biomasses offer versatile applications, prompting research into potential third-generation biorefineries. In this study, the hydrothermal processing sp. was evaluated under specific conditions at 190 °C/50 min 150 °C/30 min. resulting hydrolysates (liquid phase) were used as alternative culture media for cultivation. Nine treatments cultivation Arthrospira platensis assessed, varying concentration (HH) min: T1 (5% v/v), T2 (10% T3 (15% v/v). T4 T5 T6 maintaining same HH conditions, with addition 0.7 g/L NaNO3; T7, T8, T9 had concentrations 5%, 10%, 15% HH, respectively, NaNO3, respectively. Each treatment inoculated (v/v) A. platensis. Growth kinetics performed by sampling every three days 24 days. Quantification soluble proteins best production. microalgae demonstrated ability grow mixotrophic medium utilize available carbon sources medium. Treatment 4 highest biomass, an Xmax (g/L) 1.94 ± 0.06 a protein production 24.17 0.86% (w/w). Therefore, microalgal can be food matrix according biorefinery concept.

Language: Английский

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Perspectives on nanomaterial-empowered bioremediation of heavy metals by photosynthetic microorganisms

Plant Physiology and Biochemistry, Journal Year: 2024, Volume and Issue: 216, P. 109090 - 109090

Published: Sept. 3, 2024

Environmental remediation of heavy metals (HMs) is a crucial aspect sustainable development, safeguarding natural resources, biodiversity, and the delicate balance ecosystems, all which are critical for sustaining life on our planet. The bioremediation HMs by unicellular phototrophs harnesses their intrinsic detoxification mechanisms, including biosorption, bioaccumulation, biotransformation. These processes can be remarkably effective in mitigating HMs, particularly at lower contaminant concentrations, surpassing efficacy conventional physicochemical methods offering greater sustainability cost-effectiveness. Here, we explore potential various engineered nanomaterials to further enhance capacity efficiency HM based photosynthetic microorganisms. assessment interactions between emphasised ability tailored sustain metabolism defence system microorganisms, thereby enhancing growth, biomass accumulation, overall capacity. Key factors that could shape future research efforts toward nanobioremediation discussed, knowledge gaps field have been identified. This study sheds light as an efficient, scalable, cost-effective solution removal.

Language: Английский

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