Recent advances in nano-Fenton catalytic degradation of emerging pharmaceutical contaminants

Kumar, Amit; Rana, Anamika; Sharma, Gaurav; Naushad, Mu.; Dhiman, Pooja; Kumari, Anu; Stadler, Florian J.

doi:10.1016/j.molliq.2019.111177

Cited by 131 publications

(28 citation statements)

References 229 publications

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“…At optimum conditions, around 96% mineralisation was achieved after 8 h treatment, suggesting pyrite as an adequate solid catalyst for the electro-Fenton process. The efficiency of the pyrite-based electro-Fenton process was associated with the self-regulator of iron dosage and pH in the system according to the Equations ( 27)-( 29 Natural iron-based composites have been investigated for heterogeneous electro-Fenton process targeting removal of pharmaceuticals [28]. Iron nanoparticles have high reactivity in water, leading to high surface energy, oxidation and passivation processes.…”

Section: Heterogeneous Catalystsmentioning

confidence: 99%

“…Their hydrotalcite structure promoted high surface area and ion-exchange, exhibiting negligible metal leaching and almost full antibiotic degradation under optimal conditions. Natural iron-based composites have been investigated for heterogeneous electro-Fenton process targeting removal of pharmaceuticals [28]. Iron nanoparticles have high reactivity in water, leading to high surface energy, oxidation and passivation processes.…”

Section: Heterogeneous Catalystsmentioning

confidence: 99%

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Heterogeneous Electro-Fenton as “Green” Technology for Pharmaceutical Removal: A Review

et al. 2021

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The presence of pharmaceutical products in the water cycle may cause harmful effects such as morphological, metabolic and sex alterations in aquatic organisms and the selection/development of organisms resistant to antimicrobial agents. The compounds’ stability and persistent character hinder their elimination by conventional physico-chemical and biological treatments and thus, the development of new water purification technologies has drawn great attention from academic and industrial researchers. Recently, the electro-Fenton process has been demonstrated to be a viable alternative for the removal of these hazardous, recalcitrant compounds. This process occurs under the action of a suitable catalyst, with the majority of current scientific research focused on heterogeneous systems. A significant area of research centres working on the development of an appropriate catalyst able to overcome the operating limitations associated with the homogeneous process is concerned with the short service life and difficulty in the separation/recovery of the catalyst from polluted water. This review highlights a present trend in the use of different materials as electro-Fenton catalysts for pharmaceutical compound removal from aquatic environments. The main challenges facing these technologies revolve around the enhancement of performance, stability for long-term use, life-cycle analysis considerations and cost-effectiveness. Although treatment efficiency has improved significantly, ongoing research efforts need to deliver economic viability at a larger scale due to the high operating costs, primarily related to energy consumption.

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Section: Heterogeneous Catalystsmentioning

confidence: 99%

Section: Heterogeneous Catalystsmentioning

confidence: 99%

Heterogeneous Electro-Fenton as “Green” Technology for Pharmaceutical Removal: A Review

et al. 2021

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“…The roles of Fenton processes on the degradation of pharmaceutical contaminants [8] Photo-Fenton Environmental and medical applications of Photo-Fenton [9] Electro-Fenton…”

Section: Fentonmentioning

confidence: 99%

“…There is room for modification in the Fenton process, which includes, but is not limited to the utilization of ultrasound (Sono-Fenton process -SF) [8,[11][12][13][14], anodic oxidation (Electro-Fenton Process -EF) [15][16][17][18], using UV light and adding ferric or ferrous oxalate ions (Photo-Fenton process -PF) [19][20][21][22][23], utilizing both ultrasound and ultraviolet light (Sono-Photo-Fenton process -SPF) [24][25][26], utilizing both ultrasound and anodic oxidation (Sono-Electro-Fenton process -SEF) [27], and utilizing a combination of electrochemical and photochemical properties of UV radiation (Photo-Electro-Fenton process -PEF) [2]. Other notable modifications have been developed, such as Solar-Photo-Electro-Fenton process (SPEF) [28], Peroxi Coagulation (PC), Photo-Peroxi Coagulation (PPC), Photo-Electro Catalysis (PEC), Ferred Fenton process, and Electrochemical Peroxidation (ECP) [29].…”

Section: Fentonmentioning

confidence: 99%

Fenton Reagent for Organic Compound Removal in Wastewater

et al. 2020

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The improper treatment of wastewater has cost humanity a large amount of access to clean water. Treating wastewater, by definition, means to remove pollutants, either physically or chemically. A chemical method of treating wastewater, the Fenton process, was deemed useful for the job. It includes a solution-based reaction that produces radicals to oxidize and break pollutants down. Variations of the Fenton process, each with their unique method, have been developed to increase the process’s efficacy and efficiency further. Admittedly, however, the information on this subject is relatively few, when compared to other more recent methods of treatment. This paper aims to present and discuss a wide variety of information on the Fenton process and its derivatives, including Electro-Fenton, Sono-Fenton, and Photo-Fenton among others.

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“…In recent years, the emerging persistent organic matter attracted great attention in the environmental protection industry [1][2][3]. Owing to their high consumption and refractory chemical properties [4], antibiotics are considered as a new persistent organic substances [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Effect of Natural Organic Matter on the Ozonation Mechanism of Trimethoprim in Water

Zhang

Zhou

Yuan

et al. 2020

Water

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Trimethoprim (TMP) is often used for the treatment of various bacterial infections. It can be detected in water, and it is difficult to be biodegraded. In this study, the degradation mechanism of TMP through ozonation and the effect of humic acids (HA) were investigated. Excessive ozone (pH 6, 0 °C) could reduce the content of TMP to less than 1% in 30 s. However, when ozone (O3) was not excessive (pH 6, 20 °C), the removal efficiency of TMP increased with the increase of O3 concentration. Four possible degradation pathways of TMP in the process of ozonation were speculated: hydroxylation, demethylation, carbonylation, and cleavage. The presence of HA in water inhibit the generation of ozonation products of TMP. The excitation-emission matrices (EEM) analysis showed that with the extension of ozonation time, the fluorescence value in the solution decreased and the fluorescence peak blue shifted. These results indicated that the structure of HA changed in the reaction and was competitively degraded with TMP. According to the free radical quenching test, the products of pyrolysis, direct hydroxylation and demethylation were mainly produced by indirect oxidation.

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Recent advances in nano-Fenton catalytic degradation of emerging pharmaceutical contaminants

Cited by 131 publications

References 229 publications

Heterogeneous Electro-Fenton as “Green” Technology for Pharmaceutical Removal: A Review

Heterogeneous Electro-Fenton as “Green” Technology for Pharmaceutical Removal: A Review

Fenton Reagent for Organic Compound Removal in Wastewater

Effect of Natural Organic Matter on the Ozonation Mechanism of Trimethoprim in Water

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