UV and solar photo-degradation of naproxen: TiO 2 catalyst effect, reaction kinetics, products identification and toxicity assessment

Jallouli, Nabil; Elghniji, Kais; Hentati, Olfa; Ribeiro, Ana R.; Silva, Adrián M.T.; Ksibi, Mohamed

doi:10.1016/j.jhazmat.2015.10.045

Cited by 107 publications

(45 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…ESI-MS-MS demonstrated that the presence of ethanol in the NAP degradation produces aromatic structures as byproducts contrary to the samples that do not contain ethanol which did not present those ions (data not shown). Similar structures were observed or proposed by other investigators [42,43]. The COD of solutions ozonated without cosolvent are shown in Table 4 In addition to the effect of the chemical structure of the pollutant, the catalyst dosage and the presence of interference (organic matter) play an important role in the degradation process.…”

Section: Effect Of Cosolvent In Naphthalene and Naproxen Degradation supporting

confidence: 83%

Catalytic Ozonation as a Promising Technology for Application in Water Treatment: Advantages and Constraints

Rodríguez¹,

Fuentes²,

Aguilar³

et al. 2018

Ozone in Nature and Practice

View full text Add to dashboard Cite

Freshwater pollution compromises drinking water in a worldwide context. Water pollution is one of the major environmental challenges facing humanity. Therefore, the application of methods to control the pollution in water is a growing research field. Among the methods, ozone has been widely applied due to its high oxidation potential. However, one disadvantage is the presence of refractory organic compounds that are partially oxidized leaving mineralization incomplete. Several approaches have been considered to improve the oxidizing power, reducing the reaction time, and increasing the mineralization degree of ozone. So far, the combination of a solid catalyst with ozone (catalytic ozonation) has shown to enhance the degradation of refractory organic compounds in water. This chapter presents the combination of different metallic oxides (Al 2 O 3 , TiO 2 , SiO 2 , and NiO) with ozone to determine the effect of ozone decomposition and the subsequent elimination of one chlorinated compound (2,4-D). The chemical structure of the initial compound (2,4-D, benzoic and phthalic acid), as well as the initial catalyst dosage (0.1 and 0.5 g L −1) with the mentioned compounds, was also studied. Moreover, the degradation of two aromatic compounds (naphthalene and naproxen) with different proportions of ethanol (representing the organic matter of wastewater) was analyzed to establish their effect on the catalytic ozonation process.

show abstract

Section: Effect Of Cosolvent In Naphthalene and Naproxen Degradation supporting

confidence: 83%

Catalytic Ozonation as a Promising Technology for Application in Water Treatment: Advantages and Constraints

Rodríguez¹,

Fuentes²,

Aguilar³

et al. 2018

Ozone in Nature and Practice

View full text Add to dashboard Cite

show abstract

“…Naproxen can affect the organisms inhabiting ecosystems either through its toxicity to an organism or via the toxicity of its metabolites. The latter can be formed during both physicochemical and biological processes (Jallouli et al 2016;Rodriguez-Rodriguez et al 2011). One of the most important aspects of studies on pollutant degradation is the increased toxicity of the degradation products.…”

Section: Occurrence Of Naproxen In the Environmentmentioning

confidence: 99%

Naproxen in the environment: its occurrence, toxicity to nontarget organisms and biodegradation

Wojcieszyńska

Guzik

2020

Appl Microbiol Biotechnol

123

View full text Add to dashboard Cite

This article summarizes the current knowledge about the presence of naproxen in the environment, its toxicity to nontarget organisms and the microbial degradation of this drug. Currently, naproxen has been detected in all types of water, including drinking water and groundwater. The concentrations that have been observed ranged from ng/L to μg/L. These concentrations, although low, may have a negative effect of long-term exposure on nontarget organisms, especially when naproxen is mixed with other drugs. The biological decomposition of naproxen is performed by fungi, algae and bacteria, but the only well-described pathway for its complete degradation is the degradation of naproxen by Bacillus thuringiensis B1(2015b). The key intermediates that appear during the degradation of naproxen by this strain are O-desmethylnaproxen and salicylate. This latter is then cleaved by 1,2-salicylate dioxygenase or is hydroxylated to gentisate or catechol. These intermediates can be cleaved by the appropriate dioxygenases, and the resulting products are incorporated into the central metabolism. Key points •High consumption of naproxen is reflected in its presence in the environment. •Prolonged exposure of nontargeted organisms to naproxen can cause adverse effects. •Naproxen biodegradation occurs mainly through desmethylnaproxen as a key intermediate.

show abstract

“…Several studies suggest that the oxalic acid is the product of the attack to NAP 0 propionic acid. Jallouli et al 4 proposed that the oxalic acid formation is due to the breakout of the 3-carbon fragment in the NAP molecule which transforms the carboxylic link into malic acid (4-atom carbon acid). In consequence, the decomposition of malic acid leads to the formation of oxalic acid.…”

Section: 32mentioning

confidence: 99%

“…Because their wastewaters contain drugs with different chemical nature. 4 Hence, the possible treatment of such kind of wastewaters is more complicated due to the diversity of compounds. The inadequate treatment of effluents containing several medicaments may have relevant health consequences for plants, animals, and the human beings.…”

Section: Introductionmentioning

confidence: 99%

Inhibition effect of ethanol in naproxen degradation by catalytic ozonation with NiO

et al. 2019

View full text Add to dashboard Cite

show abstract

UV and solar photo-degradation of naproxen: TiO 2 catalyst effect, reaction kinetics, products identification and toxicity assessment

Cited by 107 publications

References 33 publications

Catalytic Ozonation as a Promising Technology for Application in Water Treatment: Advantages and Constraints

Catalytic Ozonation as a Promising Technology for Application in Water Treatment: Advantages and Constraints

Naproxen in the environment: its occurrence, toxicity to nontarget organisms and biodegradation

Inhibition effect of ethanol in naproxen degradation by catalytic ozonation with NiO

Contact Info

Product

Resources

About