Degradation of pharmaceutical diclofenac and ibuprofen in aqueous solution, a direct comparison of ozonation, photocatalysis, and non-thermal plasma

Aziz, Kosar Hikmat Hama; Mießner, H.; Mueller, Siegfried; Kalaß, Dieter; Moeller, Detlev; Khorshid, Ibrahim; Rashid, Mohammad Amin M.

doi:10.1016/j.cej.2016.10.137

Cited by 233 publications

(32 citation statements)

References 51 publications

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“…This includes high-efficiency oxidation procedures, whereby undesirable substances are initiated by photolysis or chemically generated radicals (•OH radical). In practice, the most common methods are ozone-based, hydrogen peroxide-based (Foto-Fenton reaction: light +Fe 2+ + hydrogen peroxide), and heterogeneous photocatalytic methods [2].…”

Section: Introductionmentioning

confidence: 99%

Application of TiO2-Cu Composites in Photocatalytic Degradation Different Pollutants and Hydrogen Production

et al. 2020

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In the present work, copper nanoparticles were deposited onto the surface of two different commercial titanias (Evonik Aeroxide P25 and Aldrich anatase). During the synthesis, the concentration of copper was systematically varied (0.5%, 1.0%, 1.5%, 5.0%, and 10 wt.%) to optimize the composite-composition. The photocatalytic activity was evaluated under UV-light, using methyl orange and Rhodamine B as model and ketoprofen as real pollutant. For the hydrogen production capacity, oxalic acid was used as the sacrificial agent. The morpho-structural properties were investigated by using XRD (X-ray diffraction), TEM (Transmission Electron Microscopy) DRS (Diffuse Reflectance Spectroscopy), XPS (X-ray Photoelectron Spectroscopy), and SEM-EDX methods (Scanning Electron Microscopy-Energy Dispersive X-ray Analysis). Increasing the copper concentration enhanced the photocatalytic activity for methyl orange degradation in the case of Aldrich anatase-based composites. When the P25-based composites were considered, there was no correlation between the Cu concentration and the activity; but, independently of the base photocatalyst, the composites containing 10% Cu were the best performing materials. Contrarily, for the ketoprofen degradation, increasing the copper concentration deteriorated the photoactivity. For both Aldrich anatase and P25, the best photocatalytic activity was shown by the composites containing 0.5% Cu. For the degradation of Rhodamine B solution, 1.5% of copper nanoparticles was the most suitable. When the hydrogen production capacity was evaluated, the P25-based composites showed higher performance (produced more hydrogen) than the Aldrich anatase-based ones. It was found that Cu was present in four different forms, including belloite (Cu(OH)Cl), metallic Cu, and presumably amorphous Cu(I)- and Cu(II)-based compounds, which were easily convertible among themselves during the photocatalytic processes.

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Section: Introductionmentioning

confidence: 99%

Application of TiO2-Cu Composites in Photocatalytic Degradation Different Pollutants and Hydrogen Production

et al. 2020

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“…Pharmaceutical wastes such as anthropogenic contaminants often cannot be easily removed using conventional wastewater treatment and thus accumulate in aquatic media [1,2]. Trace level of pharmaceutical residues have been detected in ground and surface water, which are considered a threat to the environment due to the high public consumption and continuous discharge to the water environment [3][4][5][6]. The accumulation of pharmaceuticals in aquatic environment, even in low concentrations, can be harmful for human health and aquatic life, resulting in a serious environmental problem [7,8].…”

Section: Introductionmentioning

confidence: 99%

“…The accumulation of pharmaceuticals in aquatic environment, even in low concentrations, can be harmful for human health and aquatic life, resulting in a serious environmental problem [7,8]. Diclofenac (DCF) and ibuprofen (IBP) are highly consumed pharmaceuticals and are typical representatives of analgesic non-steroidal anti-inflammatory pharmaceutical compounds (NSAIDs) that have been detected in water environment at low concentrations (ng/L to µg/L) [4,[9][10][11]. NSAIDs are considered to be one of the most frequently detected pharmaceuticals in aquatic systems, including surface and ground water [12,13].…”

Section: Introductionmentioning

confidence: 99%

“…Advanced oxidation processes (AOPs) have attracted significant attention in the field of water treatment, due to its high removal efficiency and environmental compatibility [14]. Various AOPs have been successfully applied for environmental remediation [15,16] and have been safely and efficiently used for the removal of different organic contaminants, such as pharmaceuticals [4], herbicides [3] and organic dye [17], from aqueous solutions. AOPs are considered to be an effective and promising method for the degradation and mineralization of aqueous recalcitrant pharmaceutical compounds [2].…”

Section: Introductionmentioning

confidence: 99%

“…The quantity and type of these transformation products depend on the conditions of the treatment method. Identification of intermediates and mechanism pathway of photocatalytic degradation are considered to be an important step to control the oxidation process and to know the health effect of each transformation product [4,17].…”

Section: Introductionmentioning

confidence: 99%

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Application of Photocatalytic Falling Film Reactor to Elucidate the Degradation Pathways of Pharmaceutical Diclofenac and Ibuprofen in Aqueous Solutions

et al. 2019

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Diclofenac (DCF) and ibuprofen (IBP) are common pharmaceutical residues that have been detected in the aquatic system. Their presence in the aquatic environment has become an emerging contaminant problem, which has implications for public health. The degradation pathway and identification of transformation products of pharmaceutical residues are crucial to elucidate the environmental fate of photocatalytic decomposition of these pollutants in aqueous media. The degradation process might lead to creation of other possible emerging contaminates. In this study, the degradation of DCF and IBP in aqueous solutions was investigated. To this end, coated TiO2 on a Pilkington Active glass was used as a photocatalyst under UVA illumination, in a planar falling film reactor. Pilkington ActivTM glass was used as a photocatalyst and a falling liquid film generator. Degradation kinetics of both pharmaceuticals followed a pseudo-first-order model. The transformation products of both diclofenac and ibuprofen during the degradation process were detected and identified with gas chromatography–mass spectrometry (GC–MS) and ion chromatography. The results showed that the mineralization rate of both pharmaceuticals through photocatalysis was very low. Low chain carboxylic acids, such as formic, acetic, oxalic, malonic, and succinic acids were the main by-products. A pathway of DCF and IBP degradation was proposed.

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High efficiency plasma treatment of water contaminated with organic compounds. Study of the degradation of ibuprofen

Măgureanu

Mandache

Bradu

et al. 2018

Plasma Processes & Polymers

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The degradation of ibuprofen in water by nonthermal plasma is studied using a pulsed corona discharge above liquid, generated in oxygen. The influence of pulse duration (50-430 ns FWHM) on removal efficiency and on mineralization was investigated.Complete removal of the target compound was achieved within 15-20 min plasma treatment and the mineralization degree reached 76% after 60 min. The energy efficiency was greatly enhanced by reducing pulse length: 20.2 g kWh −1 was obtained for 50 ns pulses at 90% IBP removal, more than one order of magnitude higher than the value for the longest pulses. Higher initial concentration of the target compound led to further improvement of the energy yield, but required more time to complete the degradation process. K E Y W O R D S energy efficiency, ibuprofen, non-thermal plasma, pulse duration, pulsed corona discharge Plasma Process Polym. 2018;15:e1700201.www.plasma-polymers.com

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Degradation of pharmaceutical diclofenac and ibuprofen in aqueous solution, a direct comparison of ozonation, photocatalysis, and non-thermal plasma

Cited by 233 publications

References 51 publications

Application of TiO2-Cu Composites in Photocatalytic Degradation Different Pollutants and Hydrogen Production

Application of TiO2-Cu Composites in Photocatalytic Degradation Different Pollutants and Hydrogen Production

Application of Photocatalytic Falling Film Reactor to Elucidate the Degradation Pathways of Pharmaceutical Diclofenac and Ibuprofen in Aqueous Solutions

High efficiency plasma treatment of water contaminated with organic compounds. Study of the degradation of ibuprofen

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