A comprehensive review of various approaches for treatment of tertiary wastewater with emerging contaminants: what do we know?

Environmental Monitoring and Assessment, Год журнала: 2022, Номер 194(12)

Опубликована: Окт. 14, 2022

Язык: Английский

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Architectural design of 2D covalent organic frameworks (COFs) for pharmaceutical pollutant removal

npj Clean Water, Год журнала: 2024, Номер 7(1)

Опубликована: Апрель 15, 2024

Abstract Macrolide antibiotics, including erythromycin, clarithromycin, and azithromycin, are frequently misused for human treatment globally. Therefore, they were considered high-risk substances on the Union-wide monitoring Watch list under Regulation 2018/840/EU. The present work investigates adsorption behavior of pharmaceutical pollutants 1,3,5-tris (4-aminophenyl) benzene/2,5 dimethoxyterephthalaldehyde (TAPB-DMTP) covalent organic frameworks (COFs). In this study, we employ molecular dynamics simulations well-tempered metadynamics to evaluate affinity pristine their functionalized form (F-COFs) removal four distinct pollutant molecules (PPMs): erythromycin (EMC), dexamethasone (DEG), azithromycin (AZM), clarithromycin (CMC). We utilized MD examine impact two different temperatures (298 310 K) enhancing contaminants from wastewater by COFs/F-COFs. To process, several descriptors calculated simulation trajectories, interaction energies, root-mean-square deviation, radial distribution function, solvent-accessible surface area, mean square displacement, number hydrogen bonds (HB). It is determined that HB X–H⋯π (X = C, N, O; π aromatic system) interactions most critical factors contributing system stability. addition, it shown COFs with a pore-based structure have higher capacity removing pollutants. free energy landscapes confirm global minimum typically associated formation bonds. At 298 K, minima DEG/F-COFs −665.81, AZM/F-COFs −638.53, EMC/F-COFs −566.31, CMC/F-COFs −326.75 KJ mol −1 .

Язык: Английский

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Tricks and tracks of prevalence, occurrences, treatment technologies, and challenges of mixtures of emerging contaminants in the environment: With special emphasis on microplastic

Journal of Contaminant Hydrology, Год журнала: 2024, Номер 265, С. 104389 - 104389

Опубликована: Июнь 24, 2024

Язык: Английский

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Titanium-based MAX-phase with sonocatalytic activity for degradation of oxytetracycline antibiotic

Ultrasonics Sonochemistry, Год журнала: 2022, Номер 92, С. 106255 - 106255

Опубликована: Дек. 6, 2022

In light of growing environmental concerns over emerging contaminants in aquatic environments, antibiotics particular, have prompted the development a new generation effective sonocatalytic systems. this study, type nano-laminated material, Ti2SnC MAX phase, is prepared, characterized, and evaluated for degradation oxytetracycline (OTC) antibiotic. A variety identification analyses, including X-ray diffraction, scanning electron microscopy, energy-dispersive spectrometry, Brunauer-Emmett-Teller, diffuse reflectance spectroscopy, were conducted to determine physicochemical properties synthesized catalyst. By optimizing operating factors, total OTC occurs within 120 min with 1 g L-1 catalyst, 10 mg OTC, at natural pH 7.1 150 W ultrasonic power. The scavenger studies conclude that singlet oxygen superoxide ions are most active species during reaction. Based on obtained data GC-MS analysis, possible mechanism presence proposed. catalyst reusability eight consecutive runs reveals proper stability phase. results indicate prospect phase-based materials be developed as efficient sonocatalysts treatment antibiotics, suggesting bright future field.

Язык: Английский

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Preparation of magnetically recyclable hierarchical porous sludge-pine needle derived biochar loaded CoFe2O4 nanoparticles for rapid degradation of tetracycline by activated PMS

Materials Today Communications, Год журнала: 2023, Номер 35, С. 106313 - 106313

Опубликована: Май 26, 2023

Язык: Английский

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Highly Efficient Cationic Surfactant Functionalized Alginate Hydrogel for Perfluorooctanoic Acid Adsorption: Optimization through Response Surface Methodology and Performance Evaluation for Aqueous Media

ACS ES&T Water, Год журнала: 2024, Номер 4(7), С. 3078 - 3088

Опубликована: Июнь 29, 2024

This study presents a sustainable treatment of perfluoroalkyl or polyfluoroalkyl substances in aquatic environments, focusing on perfluorooctanoic acid (PFOA), through adsorption. The employs response surface methodology to assess the influence adsorbent's synthesis parameters─specifically, quantities calcium, sodium alginate, and cetyltrimethylammonium bromide (CTAB)─on adsorption efficiency alginate hydrogel. optimally synthesized hydrogel exhibits an average PFOA removal 94.8 ± 2.1% at 50 mg/L concentration. experimental data for closely align with pseudo-second-order rate kinetic model (R2 = 0.97) Sips isotherm 0.99), maximum possible capacity 382.1 mg/g. Hydrogen bonding electrostatic hydrophobic interactions are identified as primary mechanisms driving by high values selectivity parameters, indicative its preference even presence background river water matrix. A regenerant solution 50% ethanol 0.25% ammonium hydroxide demonstrates ∼80% regeneration capability, although it falls ∼70% after three adsorption–desorption cycles. provides insights into performance CTAB-functionalized hydrogel, showcasing uptake PFOA.

Язык: Английский

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Emerging and Persistent Contaminants in a Remote Coastal Stream System: Five Priority Compounds in Southeast Asia

Sustainability, Год журнала: 2025, Номер 17(2), С. 581 - 581

Опубликована: Янв. 14, 2025

This study is a preliminary assessment of the emerging and persistent contaminants (EPCs) in ecologically sensitive Kamphuan Stream Southern Thailand. The analysis 15 compounds revealed that EPC concentrations below main community were significantly elevated during rainy season, with highest levels found for sucralose (9070 ng/L), metformin (6250 fexofenadine (5110 gabapentin (3060 ng/L). These spatiotemporal patterns highlight episodic nature contamination driven by urban stormwater runoff, where rainfall events create temporary pathways transport EPCs to streams draining into coastal ecosystems. Maximum three pharmaceuticals (diclofenac, gemfibrozil, ibuprofen), as well sucralose, caffeine, fenobucarb, exceeded general predicted no-effect (PNECs) marine or fresh waters; however, these not persistent. Limited sampling across campaigns constrained ability fully characterize dynamics this issue through statistical inference. Furthermore, risk assessments absence locally derived PNECs tropical ecosystems organisms, along limited standardization PNEC determination methodologies, making definitive conclusions challenging. A comparative five priority metformin, naproxen, fluoxetine) against existing data from East Southeast Asia underscores need further research evaluate ecological risks posed diverse rivers streams. Future studies should focus on greatest importance, investigate their transformation products, identify sources pathways, assess environmental aquatic

Язык: Английский

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INVESTIGATION OF ORGANIC MICROPOLLUTANTS IN URBAN WASTEWATER AND THE FEASIBILITY OF REUSING TREATED WASTEWATER FOR IRRIGATION PURPOSES

Journal of environmental chemical engineering, Год журнала: 2025, Номер unknown, С. 116216 - 116216

Опубликована: Март 1, 2025

Язык: Английский

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Emerging Contaminants in Natural and Engineered Water Environments: Environmental Behavior, Ecological Effects and Control Strategies

Water, Год журнала: 2025, Номер 17(9), С. 1329 - 1329

Опубликована: Апрель 29, 2025

The acceleration of industrialization and urbanization has rendered water pollution one the most pressing environmental issues worldwide [...]

Язык: Английский

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Elimination and Redistribution of Intracellular and Extracellular Antibiotic Resistance Genes in Water and Wastewater Disinfection Processes: A Review

ACS ES&T Water, Год журнала: 2022, Номер 2(12), С. 2273 - 2288

Опубликована: Ноя. 4, 2022

Antibiotic resistance genes (ARGs) have been identified as emerging contaminants in water and wastewater. Concerns raised of whether disinfection processes can effectively eliminate ARGs thus mitigate their spread. Due to the different existing forms dissemination pathways, intracellular (iARGs) extracellular (eARGs) responses processes. This review compares elimination iARGs eARGs representative applied at wastewater treatment plants, including by chlorine, chloramine, chlorine dioxide, ozone, ultraviolet irradiation (UV), combination UV with chemicals. Meanwhile, redistribution upon is highlighted. Elimination efficiencies generally follow order: ozone > ≫ dioxide chloramine. The naked could be up 4-log higher than that iARGs. Notably, these disinfectants resulting byproducts formed process select antibiotic resistant bacteria (ARB) increase relative abundances Under practical disinfectant exposure, elevated may observed. Low doses chloramine tend enhance transfer from forms. To selectively control associated risks meanwhile minimize unintended consequences, practice warrant optimization.

Язык: Английский

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