Electrochemical degradation of ciprofloxacin with a Sb-doped SnO<sub>2</sub> electrode: performance, influencing factors and degradation pathways

Mu, Yanguang; Huang, Cong; Li, Haipu; Chen, Leilei; Zhang, Ding; Yang, Zhaoguang

doi:10.1039/c9ra04860j

Cited by 32 publications

(5 citation statements)

References 55 publications

(66 reference statements)

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“…At low electrolyte concentrations, the % COD removal was found to decrease with an increase in current density, whereas at higher electrolyte concentrations, the % COD removal increased with an increase in current density. This is due to the higher mass transport and the enhanced generation of reactive species because of higher conductivity and ion availability . Also, the PbO 2 coating enhanced the generation of active chlorine species and hypochlorite radicals, which improved the treatment efficiency.…”

Section: Resultsmentioning

confidence: 99%

E-Waste-Derived Electrode for Electrooxidation of Kitchen Wastewater

V S,

Appusamy,

Karuppan

2024

Ind. Eng. Chem. Res.

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The widespread use of electronic and electrical devices leads to significant electronic waste (e-waste) generation. Ewaste predominantly comprises metals, plastics, and printed circuit boards (PCBs). The metallic fraction of PCBs (MF-PCB) holds promise as a potential source of electrode synthesis. Thus, this study focuses on extracting lead from PCBs and electrodepositing it onto the graphite surface in the presence of ultrasound, forming PbO 2 (G-PbO 2 ). Additionally, the performance of G-PbO 2 in batch electrooxidation (EO) of kitchen wastewater (KWW) was evaluated and compared with that of plain graphite. Analysis of the G-PbO 2 outer layer was conducted using powder X-ray diffraction (PXRD), field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDXS), and Xray photoelectron spectroscopy (XPS). Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) results indicated an enhanced electrical conductivity, kinetics, and diffusivity nature of G-PbO 2 , alongside a reduced electrochemical impedance and charge transfer resistance. The effects of current density, electrolyte concentration, and electrode distance were analyzed, employing the central composite design (CCD) to investigate interactions between the variables. The increase in current density improved % COD removal, while higher electrolyte concentration moderately increased COD removal. A minimal interaction between electrode distance and electrolyte concentration was observed, with higher % COD removal at lower electrode distances. Experimental results demonstrated a 98% reduction in COD for G-PbO 2 . First-order kinetic rate constants were 0.00926 min −1 for graphite and 0.0149 min −1 for G-PbO 2 . G-PbO 2 exhibited 50% lower energy consumption compared to graphite with higher current efficiency.

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Section: Resultsmentioning

confidence: 99%

E-Waste-Derived Electrode for Electrooxidation of Kitchen Wastewater

V S,

Appusamy,

Karuppan

2024

Ind. Eng. Chem. Res.

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“…CFX is a third-generation fluoroquinolone (antibiotic) with an enhanced antibacterial activity and relatively stable in the environment [56]. The latter makes its degradation a process of high emergency.…”

Section: Ciprofloxacin (Cfx)mentioning

confidence: 99%

“…Mu et al [56] studied the electrochemical oxidation of CFX employing a Sb-doped SnO 2 anodic electrode. The optimal experimental conditions for the complete removal of 30 mg/L CFX after 60 min were experimentally determined (current density: 20 mA/cm 2 , supporting electrolyte (Na 2 SO 4 ) concentration: 25 g/L, pH value: 3).…”

Section: Ciprofloxacin (Cfx)mentioning

confidence: 99%

Recent Trends in Pharmaceuticals Removal from Water Using Electrochemical Oxidation Processes

2021

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Nowadays, the research on the environmental applications of electrochemistry to remove recalcitrant and priority pollutants and, in particular, drugs from the aqueous phase has increased dramatically. This literature review summarizes the applications of electrochemical oxidation in recent years to decompose pharmaceuticals that are often detected in environmental samples such as carbamazapine, sulfamethoxazole, tetracycline, diclofenac, ibuprofen, ceftazidime, ciprofloxacin, etc. Similar to most physicochemical processes, efficiency depends on many operating parameters, while the combination with either biological or other physicochemical methods seems particularly attractive. In addition, various strategies such as using three-dimensional electrodes or the electrosynthesis of hydrogen peroxide have been proposed to overcome the disadvantages of electrochemical oxidation. Finally, some guidelines are proposed for future research into the applications of environmental electrochemistry for the degradation of xenobiotic compounds and micropollutants from environmental matrices. The main goal of the present review paper is to facilitate future researchers to design their experiments concerning the electrochemical oxidation processes for the degradation of micropollutants/emerging contaminants, especially, some specific drugs considering, also, the existing limitations of each process.

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“…Nanotechnology offers many opportunities to develop nanomaterials with enhanced properties for application in various fields [13][14][15][16][17][18][19][20][21]. A variety of water treatment technologies have been reported for the removal of pharmaceutical compounds involving biodegradation [22], photolysis [23], membrane treatments [24], electrochemical approaches [25] and adsorption [26,27]. Adsorption is a promising technique for water decontamination due to the affordable cost, higher performance and convenience in use [28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Towards efficient ciprofloxacin adsorption using magnetic hybrid nanoparticles prepared with κ-, ι-, and λ-carrageenan

et al. 2022

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The efficient removal of the antibiotic ciprofloxacin (CIP) from aqueous samples using magnetic nanosorbents prepared using three sulfated polysaccharides, κ-, ι-and λ-carrageenan and an alkoxysilane agent containing a reactive epoxide ring is described. The prepared nanosorbents were characterized in detail using FTIR spectroscopy, solid-state 29 Si and 13 C NMR spectroscopy and elemental microanalysis. The synthesis method was more effective for incorporating higher amounts of κ-carrageenan in the siliceous shells. Although being less sulfated, κ-carrageenan is cheaper than the other carrageenan tested. The CIP adsorption was a cooperative process, well described by the Dubinin-Radushkevich isotherm, with maximum adsorption capacities of 878, 969 and 865 mg/g for κ-, ι-and λ-carrageenan sorbents, respectively. Overall, the produced magnetic nanosorbents are among the best magnetic systems with high adsorptive efficiency for CIP. It is suggested that protonated CIP molecules are exchanged with ester sulfate counterions of carrageenan at the particles' surface as the main pathway for CIP adsorption. The adsorption process was exothermic and entropically favorable for the three sorbents. However, at 298 K, the adsorption was spontaneous for κ-carrageenan-based sorbents and non-spontaneous for ι-and λ-carrageenan particles. The magnetic sorbents could be reused and maintained their ability towards CIP removal up to four cycles. The removal efficiency in wastewater was enhanced with the sorbent dose.

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Electrochemical degradation of ciprofloxacin with a Sb-doped SnO₂ electrode: performance, influencing factors and degradation pathways

Abstract: Sb-doped SnO2 electrodes with different coating times were prepared by an optimum sol–gel method and the application on the electrocatalytic degradation of ciprofloxacin in aqueous solution were investigated.

Cited by 32 publications

References 55 publications

E-Waste-Derived Electrode for Electrooxidation of Kitchen Wastewater

E-Waste-Derived Electrode for Electrooxidation of Kitchen Wastewater

Recent Trends in Pharmaceuticals Removal from Water Using Electrochemical Oxidation Processes

Towards efficient ciprofloxacin adsorption using magnetic hybrid nanoparticles prepared with κ-, ι-, and λ-carrageenan

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Electrochemical degradation of ciprofloxacin with a Sb-doped SnO2 electrode: performance, influencing factors and degradation pathways

Abstract: Sb-doped SnO2 electrodes with different coating times were prepared by an optimum sol–gel method and the application on the electrocatalytic degradation of ciprofloxacin in aqueous solution were investigated.

Cited by 32 publications

References 55 publications

E-Waste-Derived Electrode for Electrooxidation of Kitchen Wastewater

E-Waste-Derived Electrode for Electrooxidation of Kitchen Wastewater

Recent Trends in Pharmaceuticals Removal from Water Using Electrochemical Oxidation Processes

Towards efficient ciprofloxacin adsorption using magnetic hybrid nanoparticles prepared with κ-, ι-, and λ-carrageenan

Contact Info

Product

Resources

About

Electrochemical degradation of ciprofloxacin with a Sb-doped SnO₂ electrode: performance, influencing factors and degradation pathways