Electrochemically assisted decomposition of ozone for degradation and mineralization of Diuron

Bavasso, Irene; Montanaro, Daniele; Palma, Luca Di; Petrucci, Elisabetta

doi:10.1016/j.electacta.2019.135423

Cited by 31 publications

(8 citation statements)

References 33 publications

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“…Open‐circuit voltage (OCV) measurement and linear sweep voltammetry (LSV) technique (VSP Bio‐Logic Potentiostat) were performed during the simulation of a synthetic wastewater treatment. The Pyrex glass anodic and cathodic compartments (each with a volume of 250 mL) were filled with the buffered synthetic wastewater (pH = 7 measured by GLP21 Crison) using sodium acetate (2 g/L) and only buffer phosphate , respectively. Anaerobic digestion supernatant (2 mL) was used as microorganism source and inoculated in the anaerobic anode chamber.…”

Section: Methodsmentioning

confidence: 99%

Effect of Pretreatment of Nanocomposite PES‐Fe₃O₄ Separator on Microbial Fuel Cells Performance

Bavasso

Palma

Puglia

et al. 2019

Polymer Engineering & Sci

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Nanocomposite membranes based on polyethersulfone (PES) and nanomagnetite have been investigated with regards to the effect of pretreatments on the electrochemical performance of microbial fuel cells (MFCs). Nanocomposite membranes containing various amounts of Fe 3 O 4 (5, 10, and 20 wt%) were characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, thermogravimetric analysis, differential scanning calorimetry, and tensile tests. The application in MFC systems requires also chemical characterizations such as ion exchange capacity, water uptake, and oxygen permeability. The best formulation (PES10) showed electrochemical properties similar to the PES20. With the aim of obtaining a highperformance membrane with a low filler dosage, a pretreatment procedure (1 h of boiling step in deionized water and 1 h of immersion in 0.5 M of H 2 SO 4 ) was adopted. The results of such pretreatment in terms of maximum power and current density were 10.59 AE 0.72 mW/m 2 and 52.07 AE 0.86 mA/m 2 , respectively. The adoption of a pretreatment avoids the need of higher amount of nanofillers that can affect membrane surface roughness and its processing. Overall, the nanocomposite membranes represent a suitable technology in the MFC process. POLYM. ENG. SCI., 60:371-379, 2020.POLYMER ENGINEERING AND SCIENCE-2020 FIG. 8. SEM micrographs at two image magnifications of the fouling layer on PES5 (a,b) and PES10 (c,d) membranes after 15-day operation of MFC.

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Section: Methodsmentioning

confidence: 99%

Effect of Pretreatment of Nanocomposite PES‐Fe₃O₄ Separator on Microbial Fuel Cells Performance

Bavasso

Palma

Puglia

et al. 2019

Polymer Engineering & Sci

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“…At this point, it is worth to highlight the importance of the species contained in the electrolyte because anions and cations contained in its formulation should not promote decomposition reactions of ozone [27,49]. This is particularly important when these anions directly consume ozone (such as the chlorine or the hypochlorite formed by its disproportionation), act as precursors of hydrogen peroxide giving way to the formation of peroxone [48,70,71] (such as peroxosulfates) or simply compete in the electric charge transfer during the production of ozone if they are directly oxidized on the surface of the anode of the electro-ozonizer. As well, the occurrence of other species that consume ozone (such as organics) will also affect negatively to the accumulation of the target oxidant in the liquid media [52].…”

Section: Operation Conditions For the Electrochemical Production Of O...mentioning

confidence: 99%

New insights about the electrochemical production of ozone

Rodríguez-Peña

Barrios

Llanos

et al. 2021

Current Opinion in Electrochemistry

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“…Ozone can be easily hydrolyzed in alkaline conditions, because hydroxyl ions, being primers of hydroxyl radical formation and ozone hydrolysis reactions, are abundant in alkaline conditions. The generation of hydroxyl radicals from ozone is carried out as shown in Equations ( 11) and ( 12) [48]:…”

Section: Effects Of Ph On Formaldehyde Removal In Ozonation Processmentioning

confidence: 99%

Improving Formaldehyde Removal from Water and Wastewater by Fenton, Photo-Fenton and Ozonation/Fenton Processes through Optimization and Modeling

Hosseinzadeh

Najafpoor

Navaei

et al. 2021

Water

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This study aimed to assess, optimize and model the efficiencies of Fenton, photo-Fenton and ozonation/Fenton processes in formaldehyde elimination from water and wastewater using the response surface methodology (RSM) and artificial neural network (ANN). A sensitivity analysis was used to determine the importance of the independent variables. The influences of different variables, including H2O2 concentration, initial formaldehyde concentration, Fe dosage, pH, contact time, UV and ozonation, on formaldehyde removal efficiency were studied. The optimized Fenton process demonstrated 75% formaldehyde removal from water. The best performance with 80% formaldehyde removal from wastewater was achieved using the combined ozonation/Fenton process. The developed ANN model demonstrated better adequacy and goodness of fit with a R2 of 0.9454 than the RSM model with a R2 of 0. 9186. The sensitivity analysis showed pH as the most important factor (31%) affecting the Fenton process, followed by the H2O2 concentration (23%), Fe dosage (21%), contact time (14%) and formaldehyde concentration (12%). The findings demonstrated that these treatment processes and models are important tools for formaldehyde elimination from wastewater.

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Electrochemically assisted decomposition of ozone for degradation and mineralization of Diuron

Cited by 31 publications

References 33 publications

Effect of Pretreatment of Nanocomposite PES‐Fe₃O₄ Separator on Microbial Fuel Cells Performance

Effect of Pretreatment of Nanocomposite PES‐Fe₃O₄ Separator on Microbial Fuel Cells Performance

New insights about the electrochemical production of ozone

Improving Formaldehyde Removal from Water and Wastewater by Fenton, Photo-Fenton and Ozonation/Fenton Processes through Optimization and Modeling

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Electrochemically assisted decomposition of ozone for degradation and mineralization of Diuron

Cited by 31 publications

References 33 publications

Effect of Pretreatment of Nanocomposite PES‐Fe3O4 Separator on Microbial Fuel Cells Performance

Effect of Pretreatment of Nanocomposite PES‐Fe3O4 Separator on Microbial Fuel Cells Performance

New insights about the electrochemical production of ozone

Improving Formaldehyde Removal from Water and Wastewater by Fenton, Photo-Fenton and Ozonation/Fenton Processes through Optimization and Modeling

Contact Info

Product

Resources

About

Effect of Pretreatment of Nanocomposite PES‐Fe₃O₄ Separator on Microbial Fuel Cells Performance

Effect of Pretreatment of Nanocomposite PES‐Fe₃O₄ Separator on Microbial Fuel Cells Performance