Study on the mechanism of tetracycline removal in electrocoagulation coupled with electro-fenton reaction system with Fe anode and carbon nanotube cathode

Dai, Changchao; Shi, Shuang; Chen, Gang; Liu, Junfeng; Huang, Ling; Zhang, Jie; Feng, Yujie

doi:10.1016/j.cej.2021.131045

Cited by 41 publications

(9 citation statements)

References 61 publications

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“…The ferrous ions act as catalysts for the decomposition of H 2 O 2 and convert it into reactive forms (•OH) for the oxidation of the ATL molecules. The ferrous ion plays a considerable role in the initial decomposition of H 2 O 2 , and Fe 2+ ion concentration was shown to have a remarkable impact on total organic carbon (TOC) removal in the EF process (39,40). This process is one of the electrochemical methods in which H 2 O 2 and electro-generated ferrous ions, which are produced by oxidation of iron in the sacrificial anode, and can be explained according to Eq.…”

Section: Effect Of Fe Concentrationmentioning

confidence: 99%

Enhanced electro-Fenton processes by persulfate radical for atenolol oxidation from aqueous solution

Chatraee

Ebrahimi

Fatehizadeh

2022

Environ Health Eng Manag

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Background: Pharmaceuticals and personal care products (PPCPs) are a group of emerging environmental pollutants that have attracted the attention of many researchers due to their harmful effects on aquatic environment, animals, and humans. Thus, it is necessary to remove these contaminants from water resources. This study aimed to assess the efficiency of enhanced electro-Fenton (EF) process by persulfate (PS) radical for removal of atenolol (ATL) from aqueous solutions. Methods: The bench scale experimental setup was used to examine the factors affecting the ATL removal efficiency from synthetic wastewater; supporting electrolyte type, pH, contact time, PS concentration, Fe concentration, and ATL initial concentration. Results: Based on the results, ATL removal efficiency of 78.6% was reached under the optimum conditions of enhanced EF process by PS radical. The optimum conditions included NaCl (as a supporting electrolyte) dose of 0.5 g/L, pH 5, contact time of 60 minutes, PS dose of 0.15 g/L, Fe dose of 0.15 g/L, current density (CD) of 1.5 A/m2 , and ATL concentration of 40 mg/L. Kinetic model was following the second-order kinetics. Conclusion: The studied advanced oxidation process (AOP) can effectively remove ATL from aqueous solutions. Therefore, it can be used as an effective technique for removing other organic matter from the wastewater.

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Section: Effect Of Fe Concentrationmentioning

confidence: 99%

Enhanced electro-Fenton processes by persulfate radical for atenolol oxidation from aqueous solution

Chatraee

Ebrahimi

Fatehizadeh

2022

Environ Health Eng Manag

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“…44 Besides, it is interesting to mention that various CNTs integrated with the other types of treatment systems have been investigated recently. Briefly, some of these integration processes include pre-coagulation by adsorptive filtration of pharmaceutical and personal care products using carbon nanotube membranes, 45 degradation of the common aqueous antibiotic tetracycline using a CNT electrochemical filter, 46 bacterial filtration using CNT/antibiotic buckypaper membranes, 47 covalent binding of SWCNTs to polyamide membranes for antimicrobial surface properties, 48 improvement of antifouling and antimicrobial abilities on silver-CNT-based membranes under electrochemical assistance, 49 study on the mechanism of tetracycline removal in electrocoagulation coupled with electro-Fenton reaction system with Fe anode and carbon nanotube cathode, 50 Aldoped carbon nanotubes with adsorption and coagulation, 51 and integration of coagulation/flocculation and sedimentation with carbon nanotubes 'sandwiched' in a granular filter bed. 52 To date, several studies have been conducted on the modification of CNTs in various ways for the removal of antibiotics from aqueous solution.…”

Section: Introductionmentioning

confidence: 99%

A comprehensive review on the removal of antibiotics from water and wastewater using carbon nanotubes: synthesis, performance, and future challenges

Darvishi

Mousavi

Mahmoudi

et al. 2023

Environ. Sci.: Water Res. Technol.

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“…In recent years, electrocoagulation (EC) has emerged as an effective and green technology for water and wastewater treatment (Mohtashami and Shang 2019 ; Dai et al 2022 ). Electrochemical technology including electrocoagulation and electro-Fenton may be promising to solve the problems of co-occurrence microplastics and BACs.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous removal of microplastics and benzalkonium chloride using electrocoagulation process: statistical modeling and techno-economic optimization

Mahmoudnia

Mehrdadi

Baghdadi

et al. 2023

Environ Sci Pollut Res

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Microplastics and benzyldimethyldodecylammonioum chloride (DDBAC) enter the environment more frequently during the COVID-19 pandemic and their co-occurrence will be a potential threat to the environment in the post-pandemic era. This study investigates the performance of an electrochemical system for the simultaneous removal of microplastics and DDBAC. During experimental studies, effects of applied voltage (3–15 V), pH (4–10), time (0–80 min), electrolyte concentration (0.01–0.0.09 M), electrode configuration, and perforated anode were investigated to identify their influence on DDBAC and microplastics removal efficiency. Eventually, the techno-economic optimization yielded to evaluate the commercial feasibility of this process. The central composite design (CCD) and analysis of variance (ANOVA) are employed for evaluation and optimization of the variables and response, DDBAC-microplastics removal, and for determining the adequacy and significance of mathematical models proposed by response surface methodology (RSM). Experimental results indicate that optimum conditions are pH = 7.4, time = 80 min, electrolyte concentration = 0.05 M, and applied voltage = 12.59, in which the removal of microplastics, DDBAC, and TOC reached the maximum level, which was 82.50%, 90.35%, and 83.60% respectively. The results confirm that the valid model is adequately significant for the target response. Overall, financial and energy consumption analyses confirmed that this process is a promising technology as a commercial method for the removal of DDBAC-microplastics complexes in water and wastewater treatment. Graphical Abstract

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Study on the mechanism of tetracycline removal in electrocoagulation coupled with electro-fenton reaction system with Fe anode and carbon nanotube cathode

Cited by 41 publications

References 61 publications

Enhanced electro-Fenton processes by persulfate radical for atenolol oxidation from aqueous solution

Enhanced electro-Fenton processes by persulfate radical for atenolol oxidation from aqueous solution

A comprehensive review on the removal of antibiotics from water and wastewater using carbon nanotubes: synthesis, performance, and future challenges

Simultaneous removal of microplastics and benzalkonium chloride using electrocoagulation process: statistical modeling and techno-economic optimization

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