Micro- and nano-plastics pollution in the marine environment: Progresses, drawbacks and future guidelines

Chemosphere, Год журнала: 2025, Номер 374, С. 144211 - 144211

Опубликована: Фев. 19, 2025

Язык: Английский

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Sustainable valorization of waste glycerol into bioethanol and biodiesel through biocircular approaches: a review

Environmental Chemistry Letters, Год журнала: 2023, Номер 22(2), С. 609 - 634

Опубликована: Дек. 1, 2023

Abstract Liquid biofuels like biodiesel and bioethanol are crucial in the transition to low-carbon high-energy alternatives fossil fuels. One significant by-product of production is glycerol, which accounts for about 10% total conversion output. While waste glycerol poses challenges due its impurities contaminants, it also holds potential as a metabolic resource essential cellular components microorganisms. Crude reviewed, highlighting relevance current technologies biochemical composition. To efficiently utilize co-valorization with low-cost substrates through biocircular platforms using various microorganisms or insects second third-generation oxy-biofuels has been explored. Among these, black soldier fly larvae have demonstrated higher competitiveness lipid contents (35–43%), making them promising organism recycling into production, alongside microalgae oleaginous yeast. The microbial productivity from yeast notably (3546 kg ha −1 y ) than soybean (562 ), while microalgal surpasses palm by more 25 times. Remarkably, was reported be ~ 1.7 times an impressive 43 biodiesel. Despite their industry still represents challenge because high impurities, viscosity, limited direct applications existing processes. further enhance energy sustainability address discussed utilization domestic wastewater sludge, lignocellulosic biomass, protein-rich wastes. These offer opportunities create other sustainable agricultural products minimizing environmental footprint.

Язык: Английский

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Harnessing photosynthetic microorganisms for enhanced bioremediation of microplastics: A comprehensive review

Environmental Science and Ecotechnology, Год журнала: 2024, Номер 20, С. 100407 - 100407

Опубликована: Март 5, 2024

Mismanaged plastics, upon entering the environment, undergo degradation through physicochemical and/or biological processes. This process often results in formation of microplastics (MPs), most prevalent form plastic debris (<1 mm). MPs pose severe threats to aquatic and terrestrial ecosystems, necessitating innovative strategies for effective remediation. Some photosynthetic microorganisms can degrade but there lacks a comprehensive review. Here we examine specific role photoautotrophic water soil environments biodegradation focussing on their unique ability grow persistently diverse polymers under sunlight. Notably, these cells utilise light CO2 produce valuable compounds such as carbohydrates, lipids, proteins, showcasing multifaceted environmental benefits. We address key scientific questions surrounding utilisation nanoplastics (NPs) bioremediation, discussing potential engineering enhanced efficacy. Our review highlights significance alternative biomaterials exploration strains expressing enzymes, polyethylene terephthalate (PET) hydrolases, conjunction with microalgal cyanobacterial metabolisms. Furthermore, delve into promising photo-biocatalytic approaches, emphasising coupling sunlight exposure. The integration microalgal-bacterial consortia is explored biotechnological applications against NPs pollution, synergistic effects wastewater treatment absorption nitrogen, heavy metals, phosphorous, carbon. In conclusion, this provides overview current state research use bioremediation. It underscores need continued investigation development approaches tackle global issue pollution ecosystems.

Язык: Английский

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Are native microalgae consortia able to remove microplastics from wastewater effluents?

Environmental Pollution, Год журнала: 2024, Номер 349, С. 123931 - 123931

Опубликована: Апрель 4, 2024

Wastewater Treatment Plants (WWTPs) are potential sources of microplastics (MPs) in the aquatic environment. This study aimed to investigate wastewater-native microalgae consortia remove MPs from effluent two different types WWTPs as a dual-purpose solution for mitigation and biomass production. For that purpose, occurrence WWTP effluents was analysed over one year. were characterized terms morphology (microbead, foam, granule, irregular, filament film), colour size. The wastewater characterisation followed by removal MP loads, using native consortia, pre-adapted effluent. Microalgae evolved naturally through four assays, adapted seasonal conditions, such temperature, photoperiod, composition. present all samples, ranging 52 233 L−1. indicated predominance white transparent particles, with irregular shapes, mainly under 500 μm μFTIR analysis revealed 43% selected particles plastic, prevalence polypropylene (PP) (34%) polyethylene terephthalate (PET) (30 %). In experiments, substantial production achieved (maximum 2.6 g L−1 (d.w.)), successful MPs, 31 ± 25% 82 13%. These results show growth efficiently promotes reducing this source contamination environment, while generating valuable biomass. Additionally, strategy employed, requires minimal control culture simplifying integration these systems real-world facilities improved management.

Язык: Английский

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The impact of polystyrene nanoplastics (PSNPs) on physiological and biochemical parameters of the microalgae Spirulina platensis

Journal of Hazardous Materials, Год журнала: 2024, Номер 474, С. 134644 - 134644

Опубликована: Май 17, 2024

Язык: Английский

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Integrated approach for enhanced crude bio-oil yield from microalgae cultivated on the aqueous phase of hydrothermal co-liquefaction with agar-free seaweed residues

Journal of Cleaner Production, Год журнала: 2023, Номер 392, С. 136286 - 136286

Опубликована: Фев. 1, 2023

Язык: Английский

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Insights into Anthropogenic Micro- and Nanoplastic Accumulation in Drinking Water Sources and Their Potential Effects on Human Health

Polymers, Год журнала: 2023, Номер 15(11), С. 2425 - 2425

Опубликована: Май 23, 2023

Anthropogenic microplastics (MPs) and nanoplastics (NPs) are ubiquitous pollutants found in aquatic, food, soil air environments. Recently, drinking water for human consumption has been considered a significant pathway ingestion of such plastic pollutants. Most the analytical methods developed detection identification MPs have established particles with sizes > 10 μm, but new approaches required to identify NPs below 1 μm. This review aims evaluate most recent information on release sources intended consumption, specifically tap commercial bottled water. The potential effects health dermal exposure, inhalation, these were examined. Emerging technologies used remove and/or from their advantages limitations also assessed. main findings showed that μm completely removed treatment plants (DWTPs). smallest NP identified using pyrolysis–gas chromatography–mass spectrometry (Pyr-GC/MS) had diameter 58 nm. Contamination MPs/NPs can occur during distribution consumers, as well when opening closing screw caps or recycled glass bottles In conclusion, this comprehensive study emphasizes importance unified approach detect water, raising awareness regulators, policymakers public about impact pollutants, which pose risk.

Язык: Английский

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Exploring the Prospects of Fermenting/Co-Fermenting Marine Biomass for Enhanced Bioethanol Production

Fermentation, Год журнала: 2023, Номер 9(11), С. 934 - 934

Опубликована: Окт. 26, 2023

With the rising demands for renewable fuels, there is growing interest in utilizing abundant and sustainable non-edible biomass as a feedstock bioethanol production. Macroalgal contains high content of carbohydrates form special polysaccharides like alginate, agar, carrageenan that can be converted to fermentable sugars. In addition, using seagrass production provide energy source while addressing environmental concerns. It resource-rich plant offers several advantages production, including its cellulose content, rapid growth rates, abundance coastal regions. To reduce sugar support efficient microbial fermentation, co-fermentation macroalgae with (marine biomass) complementary sugars nutrients improve process yields economics. This review comprehensively covers current status future potential fermenting macroalgal seagrass, well possible combinations maximizing from crops. An overview provided on biochemical composition pretreatment methods, hydrolysis, fermentation processes. Key technical challenges strategies achieve balanced co-substrate are discussed. The feasibility consolidated bioprocessing directly convert mixed feedstocks ethanol also evaluated. Based research, macroalgae-seagrass shows good yields, lower cost, enable more optimal utilization diverse marine resources compared individual substrates.

Язык: Английский

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Conversion of protein-rich waste into biodiesel by Hermetia illucens: Enhanced energy recovery and reduced greenhouse gas emissions

Sustainable Energy Technologies and Assessments, Год журнала: 2024, Номер 66, С. 103825 - 103825

Опубликована: Май 25, 2024

Язык: Английский

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Algae-Based Coatings for Fully Bio-Based and Colored Textile Products

Textiles, Год журнала: 2025, Номер 5(1), С. 3 - 3

Опубликована: Янв. 8, 2025

Utilizing natural fibers for production of a fully bio-based textile is an appropriate approach to align with sustainability objectives. In case dyed products, the used dye and further finishing agents also have be bio-based. Algae-based materials are naturally colored can as product. The present study aims investigate use algae color pigment coating on cotton fiber material using binder. Three different representing blue-green (BGA), unicellular microalgae (UNI), filamentous (FIL) investigated additives coatings. applied powder recipe together sodium alginate binder component. Modification application conducted by addition calcium dichloride (CaCl2) acting crosslinker system. Using these applications, strong coloration fabrics achieved. Scanning electron microscopy (SEM), infrared spectroscopy (FT-IR), measurements, light fastness tests, tests rubbing performed. Good values in reached (4–5 5, respectively) depending dichloride. Applications BGA UNI perform better due fastness. contrast, applications FIL lead confirms that proposed technique formulations achieving bio-based, offering promising foundation research into development modification functionalization materials.

Язык: Английский

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