New insights into the environmental photochemistry of hydroxynaphthalene congeners in water and in ice: A distinct comparative study

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: 493, P. 138310 - 138310

Published: April 22, 2025

Language: Английский

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Degradation of enoxacin with different dissociated species during the transformation of ferrihydrite-antibiotic coprecipitates

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 913, P. 169797 - 169797

Published: Jan. 4, 2024

Language: Английский

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Concentrated solar energy-driven photothermal efficient degradation and mineralization of fluoroquinolone antibiotics in various water bodies

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 501, P. 157739 - 157739

Published: Nov. 17, 2024

Language: Английский

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Magnetically enhanced Fe3O4@ZnO and Fe3O4@[email protected] composites for efficient UV and visible light photodegradation of methyl orange and ofloxacin

Chemosphere, Journal Year: 2025, Volume and Issue: 377, P. 144365 - 144365

Published: April 4, 2025

Language: Английский

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New insights into the environmental photochemistry of common-use antibiotics in ice and in water: A comparison of kinetics and influencing factors

Emerging contaminants, Journal Year: 2024, Volume and Issue: 10(4), P. 100382 - 100382

Published: June 21, 2024

The photochemistry of organic contaminants present in ice is receiving growing attention, given the wide presence during winter temperate regions as well Polar and mountain environments. Differences between aqueous photochemistry, however, influence quantitative fate transformation chemicals freshwater, marine ice-cap environments these differences need to be explored. Here we comparatively studied three antibiotics [levofloxacin (LVX), sulfamerazine (SM), chlortetracycline (CTC)] under same simulated sunlight (λ > 290 nm). Their photodegradation ice/water followed pseudo-first-order kinetics, whereby photolytic rates LVX water were found similar, SM photodegraded faster ice, while CTC underwent slower ice. Whether individual or not depends on specific concentration effect cage coexisting compartment. In most cases, fastest occurred freshwater fresh water, slowest photolysis pure-water pure water. This can attributed effects key photochemical reactive constituents Cl-, HA, NO3- Fe(III), that exist natural waters. These at certain levels showed significant (P < 0.1) photolysis, only but also However, a concentration, serve either enhance suppress photoreaction, depending antibiotic matrix type (e.g., solution). Furthermore, extrapolation laboratory findings cold indicate pharmaceuticals will have different photofate compared results are particular relevance for those experience seasonal cover coastal systems.

Language: Английский

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Reactive Oxygen Species Generated in Situ During Carbamazepine Photodegradation at 222 nm Far-UVC: Unexpected Role of H₂O Molecules

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(42), P. 19070 - 19079

Published: Oct. 9, 2024

When 222 nm far-UVC is used to drive AOPs, photolysis emerges as a critical pathway for the degradation of numerous organic micropollutants (OMPs). However, photodegradation mechanisms asymmetrically polarized OMPs at remain unclear, potentially posing knowledge barrier applications far-UVC. This study selected carbamazepine (CBZ), prevalent aquatic antiepileptic drug that degrades negligibly 254 nm, investigate its nm. Accelerated CBZ treatment by was mainly attributed in situ ROS generation via self-sensitized CBZ. By quenching experiments and EPR tests, •OH radicals were identified major contributor photodegradation, whereas O2•– played minor role. deoxygenation solvent exchange experiments, H2O molecules demonstrated play crucial role deactivating excited singlet state (1CBZ*) nm: generating electron transfer interactions with 1CBZ*. In addition, 1CBZ* could also undergo photoionization process. The transformation products pathways proposed, toxicities CBZ's predicted. These findings provide valuable insights into OMPs' far-UVC, revealing more mechanistic details far-UVC-driven systems.

Language: Английский

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Roles of Direct and Indirect Photodegradation in the Photochemical Fates of Three 3rd Generation Fluoroquinolones

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 480, P. 136314 - 136314

Published: Oct. 30, 2024

Language: Английский

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Preparation of S-scheme heterojunction photocatalyst Y2O3/BiOCl and visible light degradation of ofloxacin: photocatalytic mechanism, DFT calculation, degradation pathway, and toxicity evaluation

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: unknown, P. 177888 - 177888

Published: Nov. 1, 2024

Language: Английский

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Optical characteristic of dissolved organic matter polar fractions by spectrum technologies and the relationship with indirect photodegradation of ofloxacin

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(6), P. 114371 - 114371

Published: Oct. 8, 2024

Language: Английский

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Mechanism and effect of magnetic biochar on the removal of norfloxacin from water by ozone peroxidation adsorption-coagulation process

Journal of Water Process Engineering, Journal Year: 2024, Volume and Issue: 69, P. 106655 - 106655

Published: Nov. 29, 2024

Language: Английский

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