The effects of plastisphere on the physicochemical properties of microplastics

Bioprocess and Biosystems Engineering, Journal Year: 2024, Volume and Issue: unknown

Published: July 3, 2024

Language: Английский

---

Ecotoxicity of Biodegradable Microplastics and Bio-based Microplastics: A Review of in vitro and in vivo Studies

Environmental Management, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 27, 2024

Language: Английский

---

Microplastics and Antibiotics in Aquatic Environments: A Review of Their Interactions and Ecotoxicological Implications

Tropical Aquatic and Soil Pollution, Journal Year: 2024, Volume and Issue: 4(1), P. 60 - 78

Published: June 9, 2024

Microplastics and antibiotics are two significant emerging pollutants found together in water bodies, raising concerns about their mutual effects. This review delves into how microplastics interact aqueous environments the ecotoxicological implications of such interactions, particularly bioavailability prevalence antibiotic-resistance genes. It outlines that attach to primarily through hydrophobic, hydrogen-bonding, electrostatic interactions. Other bonds, comprising halogen bonding, cation−π interaction, negative charge-assisted hydrogen may also be involved better explain antibiotic adsorption patterns. The often follows pseudo-second-order kinetic model some instances, pseudo-first-order model. common isotherms governing this interaction linear Freundlich models. increase biodegradation adsorbed due presence antibiotic-degrading bacteria biofilms. They could hamper direct photodegradation but facilitate indirect antibiotics. However, photodegradative effect remains inconclusive. exhibit toxicity algae, while effects on fish daphnia less noticeable, suggesting combination does not pose an immediate threat well-being proliferation larger aquatic organisms. In reduce deleterious life. serve as catalysts for gene transfer, enhancing propagation genes these ecosystems. underscores importance understanding regulatory mechanisms diversity, at expression level.

Language: Английский

---

Pollution characteristics of microplastics in greenhouse soil profiles with the long-term application of organic compost

Resources Environment and Sustainability, Journal Year: 2024, Volume and Issue: 17, P. 100165 - 100165

Published: Aug. 9, 2024

Organic composts are significant sources of microplastic (MP) pollution in soils, and their input is much higher greenhouse agriculture than open-field agriculture. However, how long-term compost application affects MPs soil profiles remains unclear. This study examined characteristics chicken manure earthworms, exploring the impacts on accumulation vertical migration 0–100 cm depth through a 15-year experiment. Microplastics abundance was 3965 items kg−1 compost, 191–248 compost-amended 2.73–4.52 individual−1 earthworms from soils; latter two increased significantly with were unamended soils. Soil amendment contributed 45.4% total. The proportion <2 mm (49.7%) less soils (65.5%) (65.4%). size decreased increasing depth. polymer types shapes composts, exhibited similarities, mainly including polyethylene polypropylene fragments fibers. Compost-derived complex weathering morphology adhered to mineral colloids. Therefore, originating gradually weathered degraded into smaller particles migrated deeper soil, maybe resulting more serious ecological issues.

Language: Английский

---

Quantification of Micro- and Nano-plastics in Atmospheric Fine Particles by Pyrolysis-Gas Chromatography-Mass Spectrometry with Chromatographic Peak Reconstruction

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: 488, P. 137292 - 137292

Published: Jan. 19, 2025

Language: Английский

---

Sustainable, biodegradable, and recyclable bioplastics derived from renewable carboxymethyl cellulose and waste walnut shell

International Journal of Biological Macromolecules, Journal Year: 2025, Volume and Issue: 299, P. 140130 - 140130

Published: Jan. 20, 2025

Language: Английский

---

Customization of Ethylene Glycol (EG)‐Induced BmoR‐Based Biosensor for the Directed Evolution of PET Degrading Enzymes

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 10, 2025

The immense volume of plastic waste poses continuous threats to the ecosystem and human health. Despite substantial efforts enhance catalytic activity, robustness, expression, tolerance plastic-degrading enzymes, lack high-throughput screening (HTS) tools hinders efficient enzyme engineering for industrial applications. Herein, we develop a novel fluorescence-based HTS tool evolving polyethylene terephthalate (PET) degrading enzymes by constructing an engineered BmoR-based biosensor targeting PET breakdown product, ethylene glycol (EG). EG-responsive biosensors, with notably enhanced dynamic range operation range, are customized fluorescence-activated cell sorting (FACS)-assisted transcription factor engineering. ingeniously designed SUMO-MHETase-FastPETase (SMF) chimera successfully addresses functional soluble expression MHETase in Escherichia coli mitigates inhibitory effect mono-(2-hydroxyethyl) terephthalic acid (MHET) intermediate commonly observed PETase alone. obtained SMM3F mutant demonstrates 1.59-fold higher (TPA) production, 1.18-fold decrease Km, 1.29-fold increase Vmax, 1.52-fold kcat/Km, indicating stronger affinity activity toward MHET. Furthermore, crude extract depolymerizes 5 g L-1 bis-(2-hydroxyethyl) (BHET) into TPA completely at 37 °C within 10 h, which is then directedly converted value-added protocatechuic (PCA) (997.16 mg L-1) gallic (GA) (411.69 30 °C, establishing eco-friendly 'PET-BHET-MHET-TPA-PCA-GA' upcycling route. This study provides valuable large-scale MHET hydrolases candidates or metagenomic libraries, propels complete biodegradation waste.

Language: Английский

---

Combined toxicity of microplastic fibers and dibutyl phthalate on algae: synergistic or antagonistic?

Aquatic Toxicology, Journal Year: 2025, Volume and Issue: unknown, P. 107290 - 107290

Published: Feb. 1, 2025

Language: Английский

---

Comments and discussion concerning ‘Sorption behavior of tebuconazole on microplastics: kinetics, isotherms and influencing factors’ [Environ Technol. 2023;44:3937–3948]

Environmental Technology, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 11

Published: Feb. 22, 2025

The widespread use of synthetic polymers since the mid-twentieth century has led to significant environmental pollution from microplastics (MPs). These MPs, which persist in ecosystems, can interact with various pollutants, including pesticides such as tebuconazole (TEB). subject paper investigates sorption behaviour TEB on different types MPs (polystyrene, polypropylene, and polyamide-6), focusing kinetics isotherms these interactions. role metal cations (Al, Cd, Cu, Pb, Zn) influencing is also investigated. Our findings highlight critical flaws that invalidate original article, mainly interpretation physicochemical properties, pKa speciation, importance considering ion complexation risk assessment. models used by authors, although widely used, are questioned for their accuracy representing real-world scenarios.

Language: Английский

---

Microplastics in Antarctic air: revealing current findings

Antarctic Science, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 13

Published: Feb. 24, 2025

Abstract This work provides a comprehensive examination of microplastic air pollution in Antarctica. Due to atmospheric microplastics’ emerging importance, analytical procedures and health effects are discussed. Microplastic poses an increasing threat the unique delicate Antarctic ecosystem, potentially triggering harmful consequences not only for local ecosystem fauna, but also human well-being, given severe implications global scenarios such as imminent worldwide warming melting polar ice. Numerous investigations have now exposed extent prevalence both nano- microplastics this region, significant storehouse planet’s freshwater. highlights challenges assessing hazards that microplastics, particularly nanoscale variants, may pose life maintenance. The results suggest mechanisms mitigation critical transportation reaches. overview better understanding Antarctica while highlighting urgency more research area elucidate precisely short-, medium- long-term arrival these contaminants Antarctic.

Language: Английский

---