Removal of the antibiotic levofloxacin (LEVO) in water by ozonation and TiO2 photocatalysis

Nasuhoglu, Deniz; Rodayan, Angela; Berk, Dimitrios; Yargeau, Viviane

doi:10.1016/j.cej.2012.02.016

Cited by 124 publications

(54 citation statements)

References 42 publications

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“…These treatment systems have been shown to efficiently remove compounds that remain in wastewater after secondary treatment, such as: pharmaceuticals, endocrine-disrupting chemicals, iodinated X-ray contrast media and musk fragrances (Huber et al, 2003;Larcher and Yargeau, 2013;McDowell et al, 2005;Nakada et al, 2007;Rodayan et al, 2010;Ternes et al, 2003;Zwiener and Frimmel, 2000). Due to the strong oxidizing power of hydroxyl radicals, AOPs such as photocatalysis, ozonation and photo-Fenton systems are of particular interest for the removal or transformation of contaminants of emerging concern (Akmehmet Balcıoğlu et al, 2003;Boleda et al, 2011;Comninellis et al, 2008;Gogate and Pandit, 2004;Nasuhoglu et al, 2012;Valcárcel et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Ozonation of wastewater: Removal and transformation products of drugs of abuse

Rodayan

Segura

Yargeau

2014

Science of The Total Environment

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• The ozonation of six drugs of abuse and one human drug metabolite was carried out.• Drug removals vary between 3 and 50% for the ozone doses tested.• The main transformation products of the drugs of abuse were identified.• The most plausible structure of a transformation product of MDMA was elucidated. a b s t r a c t a r t i c l e i n f o In this study amphetamine, methamphetamine, methylenedioxymethamphetamine (MDMA), cocaine (COC), benzoylecgonine (BE), ketamine (KET) and oxycodone (OXY) in wastewater at concentrations of 100 μgL −1 were subjected to ozone to determine their removals as a function of ozone dose and to identify significant oxidation transformation products (OTPs) produced as a result of ozonation. A method based on high resolution mass spectrometry and differential analysis was used to facilitate and accelerate the identification and structural elucidation of the transformation products. The drug removal ranged from 3 to 50% depending on the complexity of the matrix and whether a mixture or individual drugs were ozonated. Both transient and persistent oxidation transformation products were identified for MDMA, COC and OXY and their chemical formulae were determined. Three possible structures of the persistent transformation product of MDMA (OTP-213) with chemical formula C 10 H 16 O 4 N, were determined based on MS n mass spectra and the most plausible structure (OTP-213a) was determined based on the chemistry of ozone. These results indicate that ozone is capable of removing drugs of abuse from wastewater to varying extents and that persistent transformation products are produced as a result of treatment.

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Section: Introductionmentioning

confidence: 99%

Ozonation of wastewater: Removal and transformation products of drugs of abuse

Rodayan

Segura

Yargeau

2014

Science of The Total Environment

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“…The durability of the supported catalyst was reduced after six runs, but it could be fully reactivated by heat treatment (Parra et al 2004). Pharmaceutical drugs, such as lorazepam, propranolol, oxolinic acid, levofloxacin, acetaminophen, atenolol, trimethoprim, ofloxacin, enrofloxacin, clarithromycin, acetaminophen, diclofenac, caffeine, thiabendazole, carbamazepine, acetamiprid, and erythromycin, have also been treated individually or in mixture by TiO 2 photocatalytic process (Bernabeu et al 2011;De la Cruz et al 2013;Giraldo et al 2010;Maroga Mboula et al 2012;Nasuhoglu et al 2012;Radjenović et al 2009;Rizzo et al 2009;Sousa et al 2013). Commercial TiO 2 Millennium PC-500 (anatase >99 % and 320.76 m 2 g À1 surface area) immobilized on ceramic plates by the sol-gel method was evaluated on the photocatalytic oxidation of three pharmaceuticals compounds under UV light.…”

Section: Photocatalytic Degradation Of Organic Compounds In the Presementioning

confidence: 99%

Photocatalytic Semiconductors

2015

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“…The biodegradability of these compounds is low, i.e., they do not decompose naturally, therefore persistent organic pollutants remain in the environment for a long time and cause environmental pollution. Activated sludge treatment, activated carbon treatment, and solid-liquid separation are the main water treatment methods, but complete decomposition of persistent organic pollutants by these methods is difficult [2][3][4][5][6]. Currently, advanced oxidation processes (AOPs) are attracting attention as techniques for removing persistent organic pollutants.…”

Section: Introductionmentioning

confidence: 99%