Degradation of metformin in water by TiO2–ZrO2 photocatalysis

Carbuloni, Caroline Franco; Savoia, Jaqueline Elisabete; Santos, Jaqueline Sousa Pereira Dos; Pereira, Cíntia Andreia Alves; Marques, Rubiane Ganascim; Ribeiro, Valquíria A.S.; Ferrari, Ana Maria

doi:10.1016/j.jenvman.2020.110347

Cited by 75 publications

(20 citation statements)

References 31 publications

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“…The figures are created based on information collected from published papers. 18,27,28,32,38,39,60,63,[66][67][68][69][70]76 The major physical and chemical properties of these TPs are available in Table 1. countries, there are less wastewater treatment facilities in middle-income countries.…”

Section: Updated Summary Of Metformin Contamination In Global Watersmentioning

confidence: 99%

“…28,60,68 In addition, ultraviolet photolysis in both the presence and absence of catalytic materials was found to transform metformin (degradation efficiency of 31% 60 ) through reactive oxygen species and formed GU, MBG, 2,4-AMT, 2,4-DAT, 4,2,1-AIMT, BGN, and DMG (pathway III, Figure 2B). 28,60,69,70 MBG, 2,4-AMT, 2,4-DAT, and 4,2,1-AIMT can also be generated electrochemically (pathway IV, Figure 2B). 18 Although advanced oxidation can transform metformin, the generation of various organic TPs and, in some cases, dimers and trimers indicate incomplete degradation.…”

Section: Advanced Oxidation Processmentioning

confidence: 99%

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Metformin Contamination in Global Waters: Biotic and Abiotic Transformation, Byproduct Generation and Toxicity, and Evaluation as a Pharmaceutical Indicator

Zhang

2022

Environ. Sci. Technol.

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Metformin is the first-line antidiabetic drug and one of the most prescribed medications worldwide. Because of its ubiquitous occurrence in global waters and demonstrated ecotoxicity, metformin, as with other pharmaceuticals, has become a concerning emerging contaminant. Metformin is subject to transformation, producing numerous problematic transformation byproducts (TPs). The occurrence, removal, and toxicity of metformin have been continually reviewed; yet, a comprehensive analysis of its transformation pathways, byproduct generation, and the associated change in adverse effects is lacking. In this review, we provide a critical overview of the transformation fate of metformin during water treatments and natural processes and compile the 32 organic TPs generated from biotic and abiotic pathways. These TPs occur in aquatic systems worldwide along with metformin. Enhanced toxicity of several TPs compared to metformin has been demonstrated through organism tests and necessitates the development of complete mineralization techniques for metformin and more attention on TP monitoring. We also assess the potential of metformin to indicate overall contamination of pharmaceuticals in aquatic environments, and compared to the previously acknowledged ones, metformin is found to be a more robust or comparable indicator of such overall pharmaceutical contamination. In addition, we provide insightful avenues for future research on metformin.

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Section: Updated Summary Of Metformin Contamination In Global Watersmentioning

confidence: 99%

Section: Advanced Oxidation Processmentioning

confidence: 99%

Metformin Contamination in Global Waters: Biotic and Abiotic Transformation, Byproduct Generation and Toxicity, and Evaluation as a Pharmaceutical Indicator

Zhang

2022

Environ. Sci. Technol.

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“…These compounds enter aquatic resources through various sources, causing pollution to marine resources. Carbuloni et al [87] used TiO 2 and a synthetic TiO 2 -ZrO 2 catalyst to remove metformin in sewage and confirmed that photocatalysis can effectively remove metformin in water. Chinnaiyan et al [88] studied titanium dioxide as a photocatalyst to degrade amoxicillin and metformin.…”

Section: Lipid Regulatorsmentioning

confidence: 99%

Recent Advances of Photocatalytic Application in Water Treatment: A Review

et al. 2021

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Photocatalysis holds great promise as an efficient and sustainable oxidation technology for application in wastewater treatment. Rapid progress developing novel materials has propelled photocatalysis to the forefront of sustainable wastewater treatments. This review presents the latest progress on applications of photocatalytic wastewater treatment. Our focus is on strategies for improving performance. Challenges and outlooks in this promising field are also discussed. We hope this review will help researchers design low-cost and high-efficiency photocatalysts for water treatment.

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“…Over the years, a large number of semiconductors have been developed and used as photocatalysts. Among various semiconductors, TiO2 is considered the best photocatalyst and is widely used to detoxify water from a number of organic pollutants [1][2][3]. However, photocatalysis using titanium dioxide has a number of significant drawbacks.…”

Section: Introductionmentioning

confidence: 99%

Studies of the Influence of Temperature on the Photocatalytic Activity of Tungsten Oxide

Derbasova

2022

Materials Research Proceedings

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Abstract. The results of photocatalytic activity of tungsten oxide in visible light are analyzed. It was shown that tungsten oxide has photocatalytic activity under the action of visible light in the photodegradation of the dye methylene blue. It was determined that the concentration of 15 mg/L provides the highest rate of photodecomposition of methylene blue. The optimum temperature for the process was determined. The process of methylene blue decomposition is most effective at 25 °С.

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Degradation of metformin in water by TiO2–ZrO2 photocatalysis

Cited by 75 publications

References 31 publications

Metformin Contamination in Global Waters: Biotic and Abiotic Transformation, Byproduct Generation and Toxicity, and Evaluation as a Pharmaceutical Indicator

Metformin Contamination in Global Waters: Biotic and Abiotic Transformation, Byproduct Generation and Toxicity, and Evaluation as a Pharmaceutical Indicator

Recent Advances of Photocatalytic Application in Water Treatment: A Review

Studies of the Influence of Temperature on the Photocatalytic Activity of Tungsten Oxide

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