Dataset on the degradation of losartan by TiO2-photocatalysis and UVC/persulfate processes

Guateque-Londoño, John F.; Serna-Galvis, Efraím A.; Silva-Agredo, Javier; Ávila-Torres, Yenny; Torres-Palma, Ricardo A.

doi:10.1016/j.dib.2020.105692

Cited by 10 publications

(7 citation statements)

References 11 publications

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“…In fact, the Fukui function indices for the tetrazole system are smaller than for the imidazole ring. Additionally, in a previous work from our research team, it was reported that for losartan molecule, the HOMO is located in the imidazole ring, whereas LUMO is on the tetrazole ring [46].…”

Section: Analysis Of Losartan Susceptibility To Attacks By Radical Spmentioning

confidence: 84%

Degradation of Losartan in Fresh Urine by Sonochemical and Photochemical Advanced Oxidation Processes

Guateque-Londoño

Serna-Galvis

Ávila-Torres

et al. 2020

Water

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In this work, the degradation of the pharmaceutical losartan, in simulated fresh urine (which was considered because urine is the main excretion route for this compound) by sonochemistry and UVC/H2O2 individually, was studied. Initially, special attention was paid to the degrading action of the processes. Then, theoretical analyses on Fukui function indices, to determine electron-rich regions on the pharmaceutical susceptible to attacks by the hydroxyl radical, were performed. Afterward, the ability of the processes to mineralize losartan and remove the phyto-toxicity was tested. It was found that in the sonochemical treatment, hydroxyl radicals played the main degrading role. In turn, in UVC/H2O2, both the light and hydroxyl radical eliminated the target contaminant. The sonochemical system showed the lowest interference for the elimination of losartan in the fresh urine. It was established that atoms in the imidazole of the contaminant were the moieties most prone to primary transformations by radicals. This was coincident with the initial degradation products coming from the processes action. Although both processes exhibited low mineralizing ability toward losartan, the sonochemical treatment converted losartan into nonphytotoxic products. This research presents relevant results on the elimination of a representative pharmaceutical in fresh urine by two advanced oxidation processes.

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Section: Analysis Of Losartan Susceptibility To Attacks By Radical Spmentioning

confidence: 84%

Degradation of Losartan in Fresh Urine by Sonochemical and Photochemical Advanced Oxidation Processes

Guateque-Londoño

Serna-Galvis

Ávila-Torres

et al. 2020

Water

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“…The process was carried out at pH 7.6 and the results showed that it was possible to attain removal percentages higher than 90% for both PhCs in 150 min. Furthermore, the elimination of lorsatan from urine by photocatalysis with TiO 2 was studied by Guateque-Londoño et al [54]. They used 0.5 g dm −3 TiO 2 and UVA light irradiation (75 W) at pH 6.1 for the degradation of 43.38 µmol dm −3 lorsatan, reaching removal percentages around 35% in 20 min.…”

Section: Advanced Oxidation Processes (Aops)mentioning

confidence: 99%

“…Guateque-Londoño et al [54] evaluated the degradation of 43.38 µmol dm −3 lorsatan in urine using 500 µmol dm −3 S 2 O 8 2− and UVC light (60 W) at pH 6.1. Removal percentages around 35% were achieved in 20 min.…”

Section: Advanced Oxidation Processes (Aops)mentioning

confidence: 99%

Electrochemical Technologies to Decrease the Chemical Risk of Hospital Wastewater and Urine

et al. 2021

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The inefficiency of conventional biological processes to remove pharmaceutical compounds (PhCs) in wastewater is leading to their accumulation in aquatic environments. These compounds are characterized by high toxicity, high antibiotic activity and low biodegradability, and their presence is causing serious environmental risks. Because much of the PhCs consumed by humans are excreted in the urine, hospital effluents have been considered one of the main routes of entry of PhCs into the environment. In this work, a critical review of the technologies employed for the removal of PhCs in hospital wastewater was carried out. This review provides an overview of the current state of the developed technologies for decreasing the chemical risks associated with the presence of PhCs in hospital wastewater or urine in the last years, including conventional treatments (filtration, adsorption, or biological processes), advanced oxidation processes (AOPs) and electrochemical advanced oxidation processes (EAOPs).

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“…This contrasts with the typical competition of matrix components in other photocatalytic processes. For instance, the degradation of pharmaceuticals in urine by TiO 2 -photocatalysis (which involves the action of HO • and h + ) is affected by the urine matrix [55].…”

Section: Effect Of the Matrix On The Degradation Of Levofloxacinmentioning

confidence: 99%

Use of CdS from Teaching-Laboratory Wastes as a Photocatalyst for the Degradation of Fluoroquinolone Antibiotics in Water

Serna-Galvis

Ávila-Torres

Ibáñez

et al. 2021

Water

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Laboratory wastes containing Cd2+ and water polluted by pharmaceuticals represent an environmental concern. In this work, a proof concept, consisting of the use of teaching-laboratory wastes to synthesize CdS and its subsequent use as a photocatalyst to degrade fluoroquinolone antibiotics, was developed. The CdS was prepared by extraction with thioacetamide and calcination (at 450 °C) and characterized using several techniques. The photocatalytic activity of the CdS, to degrade levofloxacin and norfloxacin, was tested, and the routes involved in the process and the primary transformations of the fluoroquinolones were established. Moreover, the ability of CdS-photocatalysis to eliminate levofloxacin in simulated matrices of fresh urine and hospital wastewater was evaluated. The characterization analyses indicated that the CdS semiconductor was synthesized successfully. Effectively, the CdS acted as a photocatalyst toward degradation of levofloxacin, involving the action of superoxide anion radical, holes, and singlet oxygen mainly. The process induced transformations on the methyl-piperazyl moiety, plus hydroxylation of the fluoroquinolone nucleus on levofloxacin. Additionally, CdS-photocatalysis was highly selective for the elimination of the target pollutant in both tested matrices. Our research indicated the good potentiality of recycling teaching-laboratory wastes to generate photocatalysts to degrade organic pollutants. This work was presented at 4° Congreso Colombiano de Procesos Avanzados de Oxidación (4CCPAOx).

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Dataset on the degradation of losartan by TiO2-photocatalysis and UVC/persulfate processes

Cited by 10 publications

References 11 publications

Degradation of Losartan in Fresh Urine by Sonochemical and Photochemical Advanced Oxidation Processes

Degradation of Losartan in Fresh Urine by Sonochemical and Photochemical Advanced Oxidation Processes

Electrochemical Technologies to Decrease the Chemical Risk of Hospital Wastewater and Urine

Use of CdS from Teaching-Laboratory Wastes as a Photocatalyst for the Degradation of Fluoroquinolone Antibiotics in Water

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