Applicability of the electrocoagulation process in treating real municipal wastewater containing pharmaceutical active compounds

Ensano, Benny Marie B.; Borea, Laura; Naddeo, Vincenzo; Belgıorno, Vincenzo; Luna, Mark Daniel G. de; Balakrishnan, Malini; Ballesteros, Florencio

doi:10.1016/j.jhazmat.2018.07.093

Cited by 87 publications

(32 citation statements)

References 36 publications

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“…EOP as post-treatment, this allowed high removal (about 97%) of the four pharmaceutical pollutants and far more successful compared to EOP as pre-treatment [119]. The integration of electrochemical processes into MBR systems can utilize the mechanism of biodegradation, sorption, hydrolysis, and filtration on conventional MBR and electrocoagulation, electroosmosis, and electrophoresis on electrochemical processes that improve both the performance and the control of membrane fouling for eliminating recalcitrant micropollutants [120,121].…”

Section: Combined Systemsmentioning

confidence: 99%

Recent Trends in Removal Pharmaceuticals and Personal Care Products by Electrochemical Oxidation and Combined Systems

Dao

Yang

Chen

et al. 2020

Water

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Due to various potential toxicological threats to living organisms even at low concentrations, pharmaceuticals and personal care products in natural water are seen as an emerging environmental issue. The low efficiency of removal of pharmaceuticals and personal care products by conventional wastewater treatment plants calls for more efficient technology. Research on advanced oxidation processes has recently become a hot topic as it has been shown that these technologies can effectively oxidize most organic contaminants to inorganic carbon through mineralization. Among the advanced oxidation processes, the electrochemical advanced oxidation processes and, in general, electrochemical oxidation or anodic oxidation have shown good prospects at the lab-scale for the elimination of contamination caused by the presence of residual pharmaceuticals and personal care products in aqueous systems. This paper reviewed the effectiveness of electrochemical oxidation in removing pharmaceuticals and personal care products from liquid solutions, alone or in combination with other treatment processes, in the last 10 years. Reactor designs and configurations, electrode materials, operational factors (initial concentration, supporting electrolytes, current density, temperature, pH, stirring rate, electrode spacing, and fluid velocity) were also investigated.

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Section: Combined Systemsmentioning

confidence: 99%

Recent Trends in Removal Pharmaceuticals and Personal Care Products by Electrochemical Oxidation and Combined Systems

Dao

Yang

Chen

et al. 2020

Water

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“…By this process the soluble contaminants are converted into hydrophobic compound or precipitates which are easily separated out by the use of various separation techniques. By the use of EC method, no secondary contaminants form because of the use of very less amount of chemicals so there is no need of neutralization reaction which is the common advantage of this process (Ensano et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Sustainable Wastewater Treatment Using Electrocoagulation Process Coupled With Powdered Activated Carbon

Sher

Iqbal

Rasheed

et al. 2021

Preprint

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In this research an electrochemical technique in combination with powdered activated carbon (PAC) for the removal of micropollutants by adsorption as an advanced stage purification step from effluents of pilot plant wastewater treatment plants (WWTP). The effluents of sedimentation tank comprised of wastewater plus PAC (WWPAC). The pilot plant mainly consists of two parts; the first one consists of electrocoagulation (EC) reactor and the second consists of electrophoretic deposition (EPD) discs and electroflotation (EF) setup. The electrocoagulation (EC) reactor is a fiber box consisting of two chambers and thirty four plates of one material (either Fe or Al) on the whole in one EC reactor while one cell has seventeen plates. Both types of electrodes have been tested with the outflow of sedimentation tank. The outflow from the sedimentation tank has been entered into the EC reactor for the determination of EC reactor efficacy for the successful accomplishment of EC process at the designed pilot plant for WW treatment. The effect of different operational parameters; PAC dosage (20 mg), electrode nature (Fe and Al), current density (0.34–2.02 A/m2) has been studied to find out the optimum conditions. Sludge volume index (SVI) of the sludge, thermogravimetric (TG), differential thermal analyses (DTA) and particle size distribution (PSD) of the flocs generated after the EC process has also been studied. The turbidity, pH and conductivity of effluents before and after EC treatment has also been carried out. This pilot plant research gave promising results for future work in advance wastewater treatment direction.

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“…This generation of oxidizing agents at the interface level has attracted growing interest in the treatment of wastewater contaminated with persistent organic compounds 5 . Some studies have evaluated the effect of the initial pharmaceutical concentration on the process efficiency for anodic oxidation, anodic oxidation with H 2 O 2 production, electro‐Fenton, photo‐electro‐Fenton UV, and photo‐electro‐Fenton UV‐solar processes, among others 19,20 …”

Section: Introductionmentioning

confidence: 99%

“…5 Some studies have evaluated the effect of the initial pharmaceutical concentration on the process efficiency for anodic oxidation, anodic oxidation with H 2 O 2 production, electro-Fenton, photo-electro-Fenton UV, and photo-electro-Fenton UV-solar processes, among others. 19,20 Amoxicillin (AMX) is one of the pharmaceutical compounds in waters being targeted in wastewater decontamination studies. 21 This drug has characteristics that make it suitable for use as a model contaminant; it is a broad-spectrum veterinary and human medicine, and it is one of the antibiotics most frequently found in waters.…”

Section: Introductionmentioning

confidence: 99%

Electro‐oxidation of amoxicillin using titanium electrodes electrophoretically coated by iridium or ruthenium with tantalum oxides

León

Gomes

Sepúlveda-Guzmán

et al. 2020

J of Chemical Tech & Biotech

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BACKGROUND Amoxicillin (AMX) is one of the pharmaceutical compounds in waters being targeted in wastewater decontamination studies, and some of the technological alternatives to degrade it involve using modified surfaces with transition metal oxides, such as IrO2/Ta2O5|Ti and RuO2/Ta2O5|Ti, for in situ production of hydroxyl radical (•OH) to oxidize AMX in aqueous media. RESULTS The IrO2/Ta2O5|Ti 70:30 electrode was best suited for AMX electro‐oxidation, with 99.23% removal measured by HPLC‐UV–Vis, 81.13% by COD removal, and current efficiency of 41.1% in 0.1 mol L–1 Na2SO4 after applying 15 mA for 6 h. These results are due to a larger surface area (251.67 cm2) and a higher amount of •OH radicals being generated by cm2 in neutral pH (3.8 mol L–1 cm−2) compared to the other electrodes. CONCLUSION This paper shows the simulation of the experimental data regarding the complete degradation of AMX (100%) by HPLC, comparing the experimental results and simulation results for AMX degradation using the IrO2/Ta2O5|Ti 70:30. The modeling predicts and validates the disengagement of COD obtained experimentally, considering the mechanism proposed by Trovó and collaborators for the electro‐oxidation of AMX to product C6 (C16H22N3O7S) by generating •OH. © 2020 Society of Chemical Industry (SCI)

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Applicability of the electrocoagulation process in treating real municipal wastewater containing pharmaceutical active compounds

Cited by 87 publications

References 36 publications

Recent Trends in Removal Pharmaceuticals and Personal Care Products by Electrochemical Oxidation and Combined Systems

Recent Trends in Removal Pharmaceuticals and Personal Care Products by Electrochemical Oxidation and Combined Systems

Sustainable Wastewater Treatment Using Electrocoagulation Process Coupled With Powdered Activated Carbon

Electro‐oxidation of amoxicillin using titanium electrodes electrophoretically coated by iridium or ruthenium with tantalum oxides

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