Treatment of hospital wastewater by anodic oxidation using a new approach made by combining rotation with pulsed electric current on Cu-SnO2–Sb2O5 rotating cylinder anode

Heliyon, Journal Year: 2025, Volume and Issue: 11(2), P. e42069 - e42069

Published: Jan. 1, 2025

A high-efficiency, low-cost Cu-SnO2-Sb2O5 anode was prepared using a novel approach that combines the effects of rotation with pulsed current. The operating variables such as speed (50-250 rpm), current density (5-20 mA/cm2), and electrodepostion time (30-60 min) on morphology activity were investigated. structure examined by SEM, EDS, XRD techniques. results showed higher combined gave better properties in terms oxidation longer service life time. optimum conditions for preparing 10 mA/cm2, 250 rpm, deposition 60 min. has ability to remove methylene blue (MB) an efficiency 99.7 %. It excellent 30 h. Additionally, potential COD from hospital wastewater 85 % applying mA/cm2 120 min at initial pH 3 where energy consumption 2.85 kWh/kg claimed. combining electric offers enhanced degradation extended life, demonstrating industrial-scale treatment.

Language: Английский

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Metal oxides and their composites for the remediation of organic pesticides: advanced photocatalytic and adsorptive solutions

RSC Advances, Journal Year: 2025, Volume and Issue: 15(9), P. 6875 - 6901

Published: Jan. 1, 2025

Metal oxide nanoparticles and their composites have garnered significant attention in water treatment environmental cleanup due to unique physicochemical properties.

Language: Английский

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A critical review on the challenges and techno-economic assessment of dyes removal technologies from waste water

Discover Chemistry., Journal Year: 2025, Volume and Issue: 2(1)

Published: March 17, 2025

Language: Английский

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Enhanced photocatalytic degradation of acetaminophen over photo-assisted dual cocatalysts loading and heterojunction formation on PbBiO2Br

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 179917 - 179917

Published: March 1, 2025

Language: Английский

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Enhanced Photodegradation of Acetaminophen Using Efficient ZnO-NiO Nanofibers

Catalysts, Journal Year: 2024, Volume and Issue: 14(7), P. 403 - 403

Published: June 26, 2024

The increasing presence of pharmaceutical pollutants, such as acetaminophen, in water bodies poses a significant environmental challenge due to their persistence and potential toxicity. This study investigated the enhanced photodegradation acetaminophen using ZnO-NiO nanofibers superior photocatalysts. synthesized with varying NiO contents (designated ZN0.5, ZN1, ZN1.5, ZN2), were characterized X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman, FTIR, Brunauer–Emmett–Teller (BET) analysis, diffuse reflectance spectroscopy (DRS) elucidate structural, morphological, optical properties. Thermogravimetric analysis (TGA) indicated that exhibit high thermal stability, major weight loss attributed decomposition polymer matrix residual organics. BET revealed specific surface area remains stable after content up certain ratio. stability correlates photocatalytic performance increased light absorption improved charge separation. spectra Kubelka–Munk plots demonstrated reduction bandgap energy higher content, facilitating greater visible absorption. Photocatalytic experiments under irradiation, peroxymonosulfate (PMS), showed ZN1.5 achieved highest degradation rate, i.e., 92%, within 3 h. Mechanistic studies, supported by radical trapping experiments, efficiency is synergistic effects ZnO heterojunctions, which enhance separation reactive oxygen species (ROS) generation. research highlights effective photocatalysts for pollutants. findings demonstrate optimizing composition structure can significantly improve remediation capabilities, providing promising solution sustainable treatment.

Language: Английский

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Photocatalytic Application of Polymers in Removing Pharmaceuticals from Water: A Comprehensive Review

Catalysts, Journal Year: 2024, Volume and Issue: 14(7), P. 447 - 447

Published: July 12, 2024

This comprehensive review covers recent advancements in utilizing various types of polymers and their modifications as photocatalysts for the removal pharmaceutical contaminants from water. It also considers that enhance photocatalytic properties other materials, highlighting dual role improving water purification efficiency. Over past decades, significant progress has been made understanding polymers, including organic, inorganic, composite efficacy degrading pharmaceuticals. Some most commonly used such polyaniline, poly(p-phenylene vinylene), polyethylene oxide, polypyrole, have reviewed detail. Physical modification techniques (mechanical blending extrusion processing) chemical (nanocomposite formation, plasma techniques, surface functionalization, cross-linking) discussed appropriate modifying order to increase activity. examines latest research findings, development novel polymer-based application compounds, well optimization strategies enhancing performance. Additionally, challenges future directions this field are guide further efforts.

Language: Английский

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Photo-transformation of ofloxacin in natural aquatic conditions: Impact of indirect photolysis on the product profile and transformation mechanism

Chemosphere, Journal Year: 2024, Volume and Issue: 361, P. 142484 - 142484

Published: June 1, 2024

Language: Английский

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Harnessing the Synergistic Potential of CuFe2O4 /MIL-101(Fe) as a Sustainable Catalyst for Visible Light-Driven Ciprofloxacin Photodegradation

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 178456 - 178456

Published: Jan. 1, 2025

Language: Английский

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Perspective Chapter: Titanium Dioxide as a Photocatalysts for Pharmaceutical Waste Degradation Present in Water

IntechOpen eBooks, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 7, 2025

This chapter presents a general overview of titanium dioxide (TiO2) as key component in photocatalytic degradation processes with emphasis on water quality improvement focusing the organic, toxic, persistent, and water-diluted pharmaceutical waste molecules. They are often linked to emerging contaminants such drug residues byproducts from significant anthropogenic activities. Throughout text, there is an physical, chemical, optical properties that make it essential applications. It also introduces fundamental concepts principles photocatalysis, facilitating analysis optimal experimental parameters conditions for efficient processes. Additionally, interaction between some pharmaceuticals examined understand potential side effects may impact its efficacy. Finally, discusses current challenges study part waste. Overcoming these would enhance performance while ensuring widespread implementation treatment systems.

Language: Английский

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Molybdenum Telluride-Promoted BiOCl Photocatalysts for the Degradation of Sulfamethoxazole Under Solar Irradiation: Kinetics, Mechanism, and Transformation Products

Catalysts, Journal Year: 2025, Volume and Issue: 15(1), P. 59 - 59

Published: Jan. 10, 2025

This work examines the solar photocatalytic degradation of antibiotic sulfamethoxazole (SMX) using molybdenum telluride (MoTe2)-promoted bismuth oxychloride (BiOCl). Different loadings in 0–1% range on BiOCl were synthesized and evaluated. Although presence MoTe2 did not alter either adsorption capacity or energy gap BiOCl, photocatalyst demonstrated higher activity due to enhanced separation photogenerated pairs. The 0.5MoTe2/BiOCl achieved a kinetic constant nearly 2.8 times than that pure leading elimination 500 μg/L SMX within 90 min. system’s performance was under neutral acidic conditions lower concentrations. Based experiments with radical scavengers, holes appeared be dominant species, contribution reactive species following order h+>O2•−/e−>1O2>HO•. Interestingly, different water matrices, diminished even increased by 20%, likely because action selectivity secondary generated radicals. retained > 90% its after three sequential experiments. Finally, four transformation products from photodegradation identified via UHPLC-TOF-MS, pathway is proposed.

Language: Английский

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