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Journal ArticleDOI

Ozonation and advanced oxidation by the peroxone process of ciprofloxacin in water

30 Jan 2009-Journal of Hazardous Materials (Elsevier)-Vol. 161, Iss: 2, pp 701-708
TL;DR: Radical species other than hydroxyl radicals were suggested to occur at acidic pH which can explain fast ciprofloxacin ozonation at pH 3.5.
About: This article is published in Journal of Hazardous Materials.The article was published on 2009-01-30. It has received 215 citations till now. The article focuses on the topics: Environmental exposure.
Citations
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Journal ArticleDOI
TL;DR: It was found that ozonation, Fenton/photo-Fenton and semiconductor photocatalysis were the most tested methodologies and combined processes seem to be the best solution for the treatment of effluents containing antibiotics, especially those using renewable energy and by-products materials.

1,219 citations


Cites background from "Ozonation and advanced oxidation by..."

  • ...%) and the effluents biodegradability (Arslan-Alaton and Caglayan, 2006; De Witte et al., 2009), but the ecotoxicity was not totally removed....

    [...]

  • ...…macrolides (Ternes et al., 2003; Huber et al., 2003, 2005a,b; Lange et al., 2006; Lin et al., 2009), quinolones (Balcio glu and Ötker, 2003; De Witte et al., 2009), sulfonamides (Huber et al., 2003, 2005a,b; Ternes et al., 2003; Dantas et al., 2008; Lin et al., 2009) and tetracyclines (Li et…...

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  • ...De Witte et al. (2009) Ciprofloxacin 30 ng/L Surface river water Coagulation/ Flocculation/ Sedimentation Sand filtration Ozonation Granular activated carbon filtration Direct photolysis Coagulation: Fe2(SO4)3 94e200 g/m3 coagulant pH¼ 5.0 Sand filtration: Surface load¼ 12 m/h pH¼ 7.3 Ozonation: 3…...

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Journal ArticleDOI
TL;DR: The most representative pharmaceutical families found in water were described and related water pollution issues were analyzed and the performances of different water treatment systems in the removal of pharmaceuticals were summarized.

1,050 citations

Journal ArticleDOI
TL;DR: The classes, functions and the representatives of the frequently detected PPCPs in aquatic environments were summarized and suggestions are made for future study of P PCPs.

997 citations

Journal ArticleDOI
TL;DR: In this review paper, a variety of AOPs, such as Fenton or Fenton-like reaction, oz onation or catalytic ozonation, photocatalytic oxidation, electrochemical oxidation, and ionizing radiation were briefly introduced, including their principles, characteristics, main influencing factors and applications.

669 citations

Journal ArticleDOI
TL;DR: The effectiveness of a range of processes including tertiary media filtration, ozonation, chlorination, UV irradiation, activated carbon adsorption, and NF/RO filTration has been reviewed and semi-quantitative estimations of antibiotics removals have been provided.

668 citations

References
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Journal ArticleDOI
TL;DR: In this article, the rate constants of reactions of ozone with non-ionized solutes, such as aliphatic alcohols, olefins, chlorosubstituted ethylenes, substituted benzenes and carbohydrates, have been determined from the absolute rates with which ozone reacts in the presence of various concentrations of these compounds in water.

1,783 citations

Journal ArticleDOI
TL;DR: In the first part of this two article series on the imperative technologies for wastewater treatment, a review of oxidation processes operating at ambient conditions was presented It has been observed that none of the methods can be used individually in wastewater treatment applications with good economics and high degree of energy efficiency Moreover, the knowledge required for the large-scale design and application is perhaps lacking as mentioned in this paper.

898 citations

Journal ArticleDOI
TL;DR: In this paper, a new parameter, Rct, representing the ratio of the √OH-exposure to the ozone exposure was calculated as a function of reaction time for most waters tested, including pH-buffered model systems and natural waters.
Abstract: The ozonation of model systems and several natural waters was examined in bench-scale batch experiments. In addition to measuring the concentration of ozone (O3), the rate of depletion of an in situ hydroxyl radical probe compound was monitored, thus providing information on the transient steady-state concentration of hydroxyl radicals (√OH). A new parameter, Rct , representing the ratio of the √OH-exposure to the O3-exposure was calculated as a function of reaction time. For most waters tested, including pH-buffered model systems and natural waters, Rct was a constant value for the majority of the reaction. Therefore, Rct corresponds to the ratio of the √OH concentration to the O3 concentration in a given water (i.e. Rct = [√OH]/[O3]). For a given water source, the degradation of a micropollutant (e.g. atrazine) via O3 and √OH reaction pathways can be predicted by the O3 reaction kinetics and Rct .

683 citations

Journal ArticleDOI
TL;DR: Sewage sludge is suggested as the main reservoir of FQ residues and the importance of sludge management strategies to determine whether most of the human-excreted FQs enter the environment is outlined.
Abstract: The behavior of fluoroquinolone antibacterial agents (FQs) during mechanical−biological wastewater treatment was studied by mass flow analysis. In addition, the fate of FQs in agricultural soils after sludge application was investigated. Concentrations of FQs in filtered wastewater (raw sewage, primary, secondary, and tertiary effluents) were determined using solid-phase extraction with mixed phase cation exchange disk cartridges and reversed-phase liquid chromatography with fluorescence detection. FQs in suspended solids, sewage sludge (raw, excess, and anaerobically digested sludge), and sludge-treated soils were determined as described for the aqueous samples but preceded by accelerated solvent extraction. Wastewater treatment resulted in a reduction of the FQ mass flow of 88−92%, mainly due to sorption on sewage sludge. A sludge-wastewater partition coefficient (log Kd ∼ 4) was calculated in the activated sludge reactors with a hydraulic residence time of about 8 h. No significant removal of FQs occur...

680 citations


"Ozonation and advanced oxidation by..." refers background in this paper

  • ...[3,4] at concentraions of 61–106ng l−1....

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  • ...Ciprofloxacinwas found inwastewater treatmentplant (WWTP) nfluents typically at concentrations of 313–568ng l−1 [3,4] and up o 124....

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Journal ArticleDOI
TL;DR: The biodegradability of some clinically important antibiotic drugs and the elimination of their genotoxicity was investigated as the first step of an environmental risk assessment using the Closed Bottle test (CBT) (OECD 301 D) and the SOS chromotest.

653 citations