Diclofenac degradation in water by FeCeOx catalyzed H2O2: Influencing factors, mechanism and pathways

Shan, Chengwei; Zhang, Guangming; Zhang, Nan; Liu, Yucan; Huang, Ting; Chang, Huazhen

doi:10.1016/j.jhazmat.2017.04.008

Cited by 106 publications

(15 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(v) C-N bond cleavage (pathway (5) in Scheme 1) occurred between two aromatic rings of the product m/z 328 by the attack of reactive radicals producing two products m/z 178 and 152. Similar transformation pathway was also reported by Chong et al 52 in the degradation of DCF using FeCeOx catalyzed H 2 O 2 .…”

Section: Degradation Mechanism Of Dcf By Hapsupporting

confidence: 85%

Kinetics and pathways of diclofenac degradation by heat-activated persulfate

et al. 2019

View full text Add to dashboard Cite

show abstract

Section: Degradation Mechanism Of Dcf By Hapsupporting

confidence: 85%

Kinetics and pathways of diclofenac degradation by heat-activated persulfate

et al. 2019

View full text Add to dashboard Cite

show abstract

“…The use of hypochlorite to degrade diclofenac in aqueous effluents was also reported with successful results [56]. Recent research in a Fenton-like system with FeCeOx-H 2 O 2 achieved 84% degradation of diclofenac within 40 min [57]. All these results are in accordance with those obtained in our experimental design and confirm the feasibility of the tested methods.…”

Section: Advanced Oxidation Treatmentssupporting

confidence: 85%

Removal of Diclofenac in Wastewater Using Biosorption and Advanced Oxidation Techniques: Comparative Results

Angosto

Roca

Fernández-López

2020

Water

View full text Add to dashboard Cite

Wastewater treatment is a topic of primary interest with regard to the environment. Diclofenac is a common analgesic drug often detected in wastewater and surface water. In this paper, three commonly available agrifood waste types (artichoke agrowaste, olive-mill residues, and citrus waste) were reused as sorbents of diclofenac present in aqueous effluents. Citrus-waste biomass for a dose of 2 g·L−1 allowed for removing 99.7% of diclofenac present in the initial sample, with a sorption capacity of 9 mg of adsorbed diclofenac for each gram of used biomass. The respective values obtained for olive-mill residues and artichoke agrowaste were around 4.15 mg·g−1. Advanced oxidation processes with UV/H2O2 and UV/HOCl were shown to be effective treatments for the elimination of diclofenac. A significant reduction in chemical oxygen demand (COD; 40–48%) was also achieved with these oxidation treatments. Despite the lesser effectiveness of the sorption process, it should be considered that the reuse and valorization of these lignocellulosic agrifood residues would facilitate the fostering of a circular economy.

show abstract

“…The peak at 532.12 eV was the characteristic of adsorbed oxygen species or surface OH species. The chemical adsorbed oxygen (O ads ) on the surface of CuO/CeO 2 might be transformed from O latt through oxygen vacancies, which was a reactive oxygen specie to attack organics (Chong et al, 2017). This kind of conversion demonstrated that O latt species participated in the degradation process of diclofenac, which was consistent with the study by Sedmak et al (2003).…”

Section: Resultsmentioning

confidence: 99%

“…CuO could decompose H 2 O 2 to form highly active ·OH (Drijvers et al, 1999), and the reaction was represented by Equations (1) and (2) (Yamaguchi et al, 2018). ·OH radical could also be produced by Ce 3+ with H 2 O 2 , which was achieved by the division of O-O bond of H 2 O 2 , as shown in Equation (3) (Chong et al, 2017). Moreover, the synergistic copper and ceria interaction (Equation 4) facilitated the redox cycles of Cu 2+ /Cu + and further was conducive to ·OH generation (Konsolakis, 2016).…”

Section: Resultsmentioning

confidence: 99%

A High-Efficiency CuO/CeO2 Catalyst for Diclofenac Degradation in Fenton-Like System

et al. 2019

Self Cite

View full text Add to dashboard Cite

An efficient Fenton-like catalyst CuO/CeO2 was synthesized using ultrasonic impregnation and used to remove diclofenac from water. The catalyst was characterized by N2 adsorption-desorption, SEM-EDS, XRD, HRTEM, Raman, and XPS analyses. Results showed that CuO/CeO2 possessed large surface area, high porosity, and fine elements dispersion. Cu was loaded in CeO2, which increased the oxygen vacancies. The exposed crystal face of CeO2 (200) was beneficial to the catalytic activity. The diclofenac removal experiment showed that there was a synergistic effect between CuO and CeO2, which might be caused by more oxygen vacancies generation and electronic interactions between Cu and Ce species. The experimental conditions were optimized, including pH, catalyst and H2O2 dosages, and 86.62% diclofenac removal was achieved. Diclofenac oxidation by ·OH and adsorbed oxygen species was the main mechanism for its removal in this Fenton-like system.

show abstract

Diclofenac degradation in water by FeCeOx catalyzed H2O2: Influencing factors, mechanism and pathways

Cited by 106 publications

References 57 publications

Kinetics and pathways of diclofenac degradation by heat-activated persulfate

Kinetics and pathways of diclofenac degradation by heat-activated persulfate

Removal of Diclofenac in Wastewater Using Biosorption and Advanced Oxidation Techniques: Comparative Results

A High-Efficiency CuO/CeO2 Catalyst for Diclofenac Degradation in Fenton-Like System

Contact Info

Product

Resources

About