On the degradation of (micro)plastics: Degradation methods, influencing factors, environmental impacts

The Science of The Total Environment, Год журнала: 2021, Номер 806, С. 151312 - 151312

Опубликована: Окт. 30, 2021

Язык: Английский

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Zero-valent iron activated persulfate remediation of polycyclic aromatic hydrocarbon-contaminated soils: An in situ pilot-scale study

Chemical Engineering Journal, Год журнала: 2018, Номер 355, С. 65 - 75

Опубликована: Авг. 21, 2018

Язык: Английский

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Magnetic bimetallic Fe, Ce-embedded N-enriched porous biochar for peroxymonosulfate activation in metronidazole degradation: Applications, mechanism insight and toxicity evaluation

Chemical Engineering Journal, Год журнала: 2021, Номер 433, С. 134387 - 134387

Опубликована: Дек. 30, 2021

Язык: Английский

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Degradation of phthalate esters in marine sediments by persulfate over Fe–Ce/biochar composites

Chemical Engineering Journal, Год журнала: 2019, Номер 384, С. 123301 - 123301

Опубликована: Ноя. 3, 2019

Язык: Английский

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The degradation of phthalate esters in marine sediments by persulfate over iron–cerium oxide catalyst

The Science of The Total Environment, Год журнала: 2019, Номер 696, С. 133973 - 133973

Опубликована: Авг. 19, 2019

Язык: Английский

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Sulfamethoxazole Transformation by Heat-Activated Persulfate: Linking Transformation Products Patterns with Carbon and Nitrogen Isotope Fractionation

Environmental Science & Technology, Год журнала: 2025, Номер unknown

Опубликована: Март 10, 2025

Sulfamethoxazole (SMX) is a frequently detected antibiotic in groundwater, raising environmental concerns. Persulfate oxidation used for micropollutant removal. To investigate SMX transformation by persulfate, experiments were conducted using heat-activated persulfate at pH 3, 7, and 10. TP269a (SMX-hydroxylamine) TP178 identified as the dominant TPs across levels. The exclusive formation of 4-nitroso-SMX, 4-nitro-SMX, TP518 3 highlighted role SO4•- attacking NH2. At 7 10, 3A5MI emerged TP. Carbon isotopic fractionation (εC = -1.3 ± 0.5‰, -1.1 0.4‰, 0.3‰ 10) remained consistent levels, caused involving C-S bond cleavage. An inverse nitrogen isotope (εN +0.68 0.11‰) was associated with SO4•--induced single-electron transfer. Conversely, normal 10 -0.27 0.04‰) N-H cleavage H abstraction through HO• N-S indicated that pathway involved reactions, accounting 74%. Overall, results highlight potential CSIA to elucidate pathways.

Язык: Английский

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A review on efficient removal of phthalic acid esters via biochars and transition metals-activated persulfate systems

Chemosphere, Год журнала: 2021, Номер 277, С. 130256 - 130256

Опубликована: Март 18, 2021

Язык: Английский

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Degradation kinetic of phthalate esters and the formation of brominated byproducts in heat-activated persulfate system

Chemical Engineering Journal, Год журнала: 2018, Номер 359, С. 1086 - 1096

Опубликована: Ноя. 13, 2018

Язык: Английский

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High-Efficiency Catalysis of Peroxymonosulfate by MgO for the Degradation of Organic Pollutants

Minerals, Год журнала: 2019, Номер 10(1), С. 2 - 2

Опубликована: Дек. 18, 2019

In the study, magnesium oxide (MgO) was used to catalyze peroxymonosulfate (PMS) for degradation of organic pollutants first time. According single-factor experiment results, it determined that MgO could efficiently PMS degrade matters in a wide range pH values. Based on radical quenching experiments and electron spinning resonance spectra, singlet oxygen identified be crucial reactive species. Importantly, vacancy surface as key active site, which accelerated decomposition produce oxygen. This study provides an interesting insight into novel ignored catalyst highly efficient activation PMS, will greatly benefit Fenton-like catalytic wastewater.

Язык: Английский

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Mechanisms of ZnO Nanoparticles Enhancing Phototransformation of Biologically Derived Organic Phosphorus in Aquatic Environments

Environmental Science & Technology, Год журнала: 2023, Номер 57(9), С. 3691 - 3702

Опубликована: Фев. 23, 2023

Zinc oxide nanoparticles (ZnO NPs), as the highly efficient photocatalysts, could enhance transformation of biogenic organic phosphorus (OP) to orthophosphate (PO43–) by photodegradation, accelerating eutrophication. Conversely, can also transform ZnO NPs and thus potentially alter their catalytic chemical properties. Here, we investigated mechanisms three OP compounds under ultraviolet light (UV) illumination: inositol phosphates (IHPs), nucleic acids (DNA), aminoethylphosphonic acid (AEP). The physicochemical characteristics resulting products were systematically characterized. Results show that accelerated IHPs, DNA, AEP inorganic with direct photolysis efficiencies 98.14, 87.68, 51.76%, respectively. main component precipitates remained NPs, Zn3(PO4)2 was identified. phytate determined in NP–IHP system. 31P NMR FTIR further confirmed aquatic phase contained orthophosphate. Photoproduced hydroxyl (·OH) superoxide (·O2–) proved play a dominant role photomineralization. Furthermore, significantly enhanced intensity ·OH ·O2– compared Zn2+ solution alone. This work explored light-induced mineralization processes indicating nanophotocatalysts may positive species environments contribute

Язык: Английский

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