Evaluation of mineralization kinetics and pathway of norfloxacin removal from water by electro-Fenton treatment

Özcan, Ali; Özcan, Ayşegül; Demirci, Yusuf

doi:10.1016/j.cej.2016.06.105

Cited by 106 publications

(25 citation statements)

References 43 publications

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“…Their electrochemical characterization will be carried out by means of two processes: the polarization curves and the treatment of an emerging compound. The selected emerging compound to be degraded is an antibiotic, the 1-ethyl-6-fluoro-4-oxo-7-piperazin-1-yl-1H-quinoline-3-carboxylic acid, commonly referred as Norfloxacin (NOR), due to its persistence in conventional water treatment plants [1,34]. In addition, the evolution of chemical oxygen demand (COD), which is another determining factor for the discharge into the environment, will be monitored.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of new ceramic electrodes based on Sb-doped SnO2 for the removal of emerging compounds present in wastewater

Mora-Gómez

García-Gabaldón

Ortega

et al. 2018

Ceramics International

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The properties of the ceramic electrodes make them interesting for electrochemical advanced oxidation processes (EAOPs), destined to the elimination of emergent or refractory contaminants, as an alternative to boron-doped-diamond (BDD) electrodes. The oxygen discharge potential (E O2 ) for the ceramic electrodes decreases as the sintering temperature increases, being these values higher than that observed for the Pt electrode and smaller than that for the BDD electrode. This result in a highest rate of 2 COD removal for the electrode sintered at 1050 ºC comparing with the rest of ceramic electrodes under potentiostatic operation. On the other hand, in galvanostatic mode, the performance of the different ceramic electrodes in terms of the degradation of Norfloxacin, used as tested antibiotic, was similar.Comparing the behavior of the ceramic electrode sintered at 1250 ºC and that of the BDD electrode at an applied potential of 3V, it is inferred that although both present similar values in terms of the degradation of Norfloxacin, the rate of removal of the chemical oxygen demand is higher in the case of the BDD.

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Section: Introductionmentioning

confidence: 99%

Evaluation of new ceramic electrodes based on Sb-doped SnO2 for the removal of emerging compounds present in wastewater

Mora-Gómez

García-Gabaldón

Ortega

et al. 2018

Ceramics International

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“…On the other hand, the negative effect of the higher Fe(II) concentration assigned to a competitive reaction between the formed hydroxyl radicals and the excess of ferrous ions (42). Özan et al (39) reported the similar effect of Fe(II) concentration in the mineralization of NFXN from water through the electro-Fenton reaction.…”

Section: Effect Of Ph On Mxt Degradation Profilementioning

confidence: 64%

“…They found that the high current density (10 mA/cm 2 ) favored the high degradation efficiency (100%) within 120 minutes. Özcan et al (39) investigated the mineralization of norfloxacin (NFXN) from water through the electro-Fenton reaction. The results showed that increasing the current intensity up to 300 mA promoted the mineralization rate of NFXN while higher values (>300 mA) decreased the reaction rate.…”

Section: Effect Of Ph On Mxt Degradation Profilementioning

confidence: 99%

Mitoxantrone removal by electrochemical method: A comparison of homogenous and heterogenous catalytic reactions

Jafarizad

Rostamizadeh

Zarei

et al. 2017

Environ Health Eng Manag

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Background: Mitoxantrone (MXT) is a drug for cancer therapy and a hazardous pharmaceutical to the environment which must be removed from contaminated waste streams. In this work, the removal of MXT by the electro-Fenton process over heterogeneous and homogenous catalysts is reported. Methods: The effects of the operational conditions (reaction medium pH, catalyst concentration and utilized current intensity) were studied. The applied electrodes were carbon cloth (CC) without any processing (homogenous process), graphene oxide (GO) coated carbon cloth (GO/CC) (homogenous process) and Fe3O4@GO nanocomposite coated carbon cloth (Fe3O4@GO/CC) (heterogeneous process). The characteristic properties of the electrodes were determined by atomic force microscopy (AFM), field emission scanning electron microscopy (FE-SEM) and cathode polarization. MXT concentrations were determined by using ultraviolet-visible (UV-Vis) spectrophotometer. Results: In a homogenous reaction, the high concentration of Fe catalyst (>0.2 mM) decreased the MXT degradation rate. The results showed that the Fe3O4@GO/CC electrode included the most contact surface. The optimum operational conditions were pH 3.0 and current intensity of 450 mA which resulted in the highest removal efficiency (96.9%) over Fe3O4@GO/CC electrode in the heterogeneous process compared with the other two electrodes in a homogenous process. The kinetics of the MXT degradation was obtained as a pseudo-first order reaction. Conclusion:The results confirmed the high potential of the developed method to purify contaminated wastewaters by MXT. Keywords: Mitoxantrone, Electrodes, Nanocomposite, Organic chemicals, Carbon Citation: Jafarizad A, Rostamizadeh M, Zarei M, Gharibian S. Mitoxantrone removal by electrochemical method: A comparison of homogenous and heterogenous catalytic reactions.

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“…H 2 O 2 -based EAOPs have demonstrated great ability to degrade traces of pharmaceuticals. Acidic aqueous solutions of antibiotics such as sulfachloropyridazine [29], sulfanilamide [30], amoxicillin [31], levofloxacin [32], norfloxacin [33] and erythromycin [34] have been removed by EO-H 2 O 2 , EF and PEF with air sparged into solution, whereas the antibiotic sulfamethazine [35], anti-inflammatory naproxen [36] and antidepressant fluoxetine [37] have been treated in electrolytic cells equipped with a GDE.…”

Section: + + →mentioning

confidence: 99%

On-site H2O2 electrogeneration at a CoS2-based air-diffusion cathode for the electrochemical degradation of organic pollutants

Ridruejo

Alcaide

Álvarez

et al. 2018

Journal of Electroanalytical Chemistry

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This work reports, for the first time, the manufacture and use of an air-diffusion cathode containing CoS 2 nanoparticles to enhance the H 2 O 2 electrogeneration. Hydrothermal synthesis allowed the formation of crystalline CoS 2 with pyrite structure, either unsupported or supported on carbon nanotubes. Both kinds of catalysts were characterized by X-ray diffraction and FE-SEM combined with energy dispersive X-ray analysis. The use of carbon nanotubes as support led to a remarkable enhancement of the CoS 2 stability, as deduced from cyclic voltammetry analysis. The electrochemical activity of the CoS 2-based materials towards the oxygen reduction reaction (ORR) in acidic medium was examined by potentiodynamic techniques using a rotating disk electrode. Both catalysts showed activity towards the ORR, being predominant the twoelectron pathway to form H 2 O 2 as main product. A novel CoS 2-on-carbon nanotubes catalyzed air-diffusion cathode, as well as an uncatalyzed one made for comparison, was manufactured to electrogenerate H 2 O 2 under galvanostatic conditions in an undivided two-electrode cell. A concentration of 56.9 mM was found with the former cathode at 100 mA cm − 2 , much > 32.0 mM found with the uncatalyzed cathode. This informs about the high performance of the CoS 2 nanoparticles to promote the two-electron ORR. Finally, the treatment of aqueous solutions of the anaesthetic tetracaine at pH 3.0 and 100 mA cm − 2 by electro-oxidation and photoelectro-Fenton processes demonstrated the viability of the manufactured CoS 2-based cathode for water treatment.

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Evaluation of mineralization kinetics and pathway of norfloxacin removal from water by electro-Fenton treatment

Cited by 106 publications

References 43 publications

Evaluation of new ceramic electrodes based on Sb-doped SnO2 for the removal of emerging compounds present in wastewater

Evaluation of new ceramic electrodes based on Sb-doped SnO2 for the removal of emerging compounds present in wastewater

Mitoxantrone removal by electrochemical method: A comparison of homogenous and heterogenous catalytic reactions

On-site H2O2 electrogeneration at a CoS2-based air-diffusion cathode for the electrochemical degradation of organic pollutants

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