Alleviating effects of microplastics together with tetracycline hydrochloride on the physiological stress of Closterium sp.

Environmental Science Processes & Impacts, Год журнала: 2024, Номер 26(9), С. 1588 - 1600

Опубликована: Янв. 1, 2024

Microplastics have significant influence on both freshwater cyanobacteria and marine microalgae, especially under co-exposure with other pollutants such as heavy metals, antibiotics, pharmaceuticals. In the present study, combined effects of microplastics (polyethylene terephthalate (PET) or polybutylene (PBT)) tetracycline hydrochloride (TCH) microalgae Closterium sp. were studied to evaluate their acute toxicity, cell density, total chlorophyll concentration, photosynthetic activity, antioxidant system, subcellular structure different treatments used explain physiological stress mechanism effects. The results indicate that single inhibition growth efficiencies (in terms density) 5.0%, 9.2%, 66.7%, 55.1%, 59.8% for PET (100 mg L-1), PBT TCH (10 PET/TCH (PET 100 L-1 10 PBT/TCH (PBT respectively, relative electron-transport rates (rETRs) 7.3%, 12.7%, 66.8%, 54.0%, 59.9%, each treatment compared control 7th day. Moreover, positive in alleviating toxicity toward sp., at same time, malondialdehyde level (MDA), superoxide dismutase (SOD) catalase (CAT) activity induced by much higher than those from microplastic but lower after 7 days. It was demonstrated causes a more serious oxidative PBT/TCH, groups could be attributed adsorption PBT. This work improves understanding

Язык: Английский

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Application of the Fenton and photo-Fenton processes in pharmaceutical removal: New perspectives in environmental protection

Desalination and Water Treatment, Год журнала: 2024, Номер 321, С. 100949 - 100949

Опубликована: Дек. 10, 2024

Язык: Английский

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Degradation of tetracyclines via calcium peroxide activation by ultrasonic: Roles of reactive species, oxidation mechanism and toxicity evaluation

Chemosphere, Год журнала: 2023, Номер 334, С. 139033 - 139033

Опубликована: Май 25, 2023

Язык: Английский

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Reducing residual chlortetracycline in wastewater using a whole-cell biocatalyst

Ecotoxicology and Environmental Safety, Год журнала: 2024, Номер 282, С. 116717 - 116717

Опубликована: Июль 13, 2024

Antibiotic contamination has become an increasingly important environmental problem as a potentially hazardous emergent and recalcitrant pollutant that poses threats to human health. In this study, manganese peroxidase displayed on the outer membrane of Escherichia coli whole-cell biocatalyst (E. MnP) was expected degrade antibiotics. The activity 13.88 ± 0.25 U/L. typical tetracycline antibiotic chlortetracycline used analyze degradation process. Chlortetracycline at 50 mg/L effectively transformed via within 18 h. After six repeated batch reactions, retained 87.2 % initial over 87.46 enzyme after storage 25°C for 40 days. could be removed from pharmaceutical livestock wastewater by biocatalyst. Thus, efficient biocatalysts are effective alternatives degrading antibiotics have potential applications in treating contamination.

Язык: Английский

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Controlled electrocatalysis of the dechlorination and detoxification of chlorinated ethylenes to avoid production of highly toxic intermediates

The Science of The Total Environment, Год журнала: 2024, Номер 952, С. 175959 - 175959

Опубликована: Авг. 31, 2024

Язык: Английский

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