Electrochemical technologies combined with physical, biological, and chemical processes for the treatment of pollutants and wastes: A review

Fitch, Alanah; Balderas‐Hernández, Patricia; Ibáñez, Jorge G.

doi:10.1016/j.jece.2022.107810

Cited by 49 publications

(6 citation statements)

References 124 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When treating a toxic and non-biodegradable endocrine disrupting compound, electrooxidative reduction transforms the organic substrate into numerous biodegradable metabolites [36], and biological treatment is required for complete mineralization following electrooxidation process [30]. On the other hand, if electrooxidative degradation yields H2O and CO2, no further procedure is needed.…”

Section: →+mentioning

confidence: 99%

The Experimental Design Approach to Removal of Endocrine Disrupting Compounds from Domestic Wastewater by Electrooxidation Process

Sözüdoğru

Koçoğlu

Yılmaz

et al. 2023

Preprint

View full text Add to dashboard Cite

In this study, the treatment performance of the process in the removal of Endocrine Disrupting Compounds (EDCs) from domestic wastewater by a laboratory-scale electrooxidation process using Ti/IrO₂/RuO₂ electrodes as an anode was evaluated using response surface method (RSM). The effect of pH, current density, and flow rate on the electrochemical treatment of 17α-ethinylestradiol, β-estradiol, triclosan, and estrone, which are often present in wastewater, has been studied. Using Box-Behnken Design (BBD), the parameters influencing the removal efficiencies were optimized for the Electrooxidation process (EOP), and the models created essential second-order quadratic models for the EOP process. The Response Surface Method yielded results that reasonably agreed with the measured values. The maximum removals of triclosan, 17α-ethinylestradiol, and β-estradiol were attained at 92,90%, 97,76%, and 95,36% respectively, under experimental conditions optimized pH= 3,68, current density= 20 A and flow rate= 8,83 mL/min for EOP. Removal efficiencies have achieved their maximum levels at low pH, high current density, and low flow rate. At the same time, the electrooxidation method could not completely remove the estrone.

show abstract

Section: →+mentioning

confidence: 99%

The Experimental Design Approach to Removal of Endocrine Disrupting Compounds from Domestic Wastewater by Electrooxidation Process

Sözüdoğru

Koçoğlu

Yılmaz

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…In this context, the green degradation and upcycling of waste plastics by electrochemical oxidation has emerged as a promising solution . This approach is nonhazardous and efficient at converting waste plastics into valuable chemicals using renewable energy, while achieving environmental management, waste treatment, and resource recovery. , For example, ethylene glycol, the hydrolysis product of polyethylene terephthalate (PET), was upcycled into acetate or formate by electrocatalysis on nickel-based catalysts. − To the best of our knowledge, the electrochemical oxidation of lactate, the sole hydrolysis product of PLA, has rarely been explored. Although a previous study reported that cobalt selenide loaded on nickel foam could oxidize lactate to acetate with a Faraday efficiency (FE) of 87%, additional efforts are needed to optimize the selectivity and stability of the catalysts for PLA upcycling.…”

Section: Introductionmentioning

confidence: 99%

“…5 This approach is nonhazardous and efficient at converting waste plastics into valuable chemicals using renewable energy, while achieving environmental management, waste treatment, and resource recovery. 6,7 For example, ethylene glycol, the hydrolysis product of poly-ethylene terephthalate (PET), was upcycled into acetate or formate by electrocatalysis on nickel-based catalysts. 8−10 To the best of our knowledge, the electrochemical oxidation of lactate, the sole hydrolysis product of PLA, has rarely been explored.…”

Section: Introductionmentioning

confidence: 99%

Electrocatalytic Reforming of Polylactic Acid Plastic Hydrolysate over Dynamically Formed γ-NiOOH

Chen,

Zhang,

Liu

et al. 2024

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Upcycling plastic waste into valuable commodity chemicals with clean energy is an appealing strategy for mitigating environmental issues. Polylactic acid (PLA), a biodegradable plastic that is produced annually in millions of tons, can be chemically recycled to valuable products instead of being degraded to carbon dioxide. Here, we demonstrate an electrochemical reforming of PLA hydrolysate to acetate and acetonate using nickel phosphide nanosheets on nickel foam (Ni 2 P/NF) as the catalyst. The Ni 2 P/NF catalyst was synthesized by electrochemical deposition and phosphide treatment and showed excellent catalytic activity and ∼100% Faraday efficiency for electroreforming PLA to acetate and acetonate in an H-cell. Moreover, a stable performance of more than 90% Faraday efficiency for value-added organics was achieved for a duration of 100 h in a flow cell at a current density of 100 mA cm −2 and a potential below 1.5 V vs. RHE. In situ characterization revealed that the catalyst underwent electrochemical reforming during the reaction to produce γ-phase NiOOH with high electrochemical activity. This work introduces a new and green solution for the treatment of waste PLA, presenting a low-cost and highly efficient strategy for electrically reforming plastics.

show abstract

“…Cooling towers, often referred to as recirculating water systems, play a crucial role in removing excess heat and maintaining temperatures for industrial equipment, including heating, ventilation, and air conditioning (HVAC) systems. The key components of a cooling system include a recirculating pump, a heat exchanger, and a cooling tower (Fitch et al, 2022 ). Maintenance is a critical aspect of cooling towers.…”

Section: Introductionmentioning

confidence: 99%

Application of photoelectrochemical oxidation of wastewater used in the cooling tower water and its influence on microbial corrosion

Kokilaramani,

Satheeshkumar,

Nandini

et al. 2024

Front. Microbiol.

View full text Add to dashboard Cite

BackgroundCooling towers are specialized heat exchanger devices in which air and water interact closely to cool the water's temperature. However, the cooling water contains organic nutrients that can cause microbial corrosion (MC) on the metal surfaces of the tower. This research explores the combined wastewater treatment approach using electrochemical-oxidation (EO), photo-oxidation (PO), and photoelectrochemical oxidation (PEO) to contain pollutants and prevent MC.MethodsThe study employed electro-oxidation, a process involving direct current (DC) power supply, to degrade wastewater. MC studies were conducted using weight loss assessments, scanning electron microscopy (SEM), and x-ray diffraction (XRD).ResultsAfter wastewater is subjected to electro-oxidation for 4 h, a notable decrease in pollutants was observed, with degradation efficiencies of 71, 75, and 96%, respectively. In the wastewater treated by PEO, microbial growth is restricted as the chemical oxygen demand decreases.DiscussionA metagenomics study revealed that bacteria present in the cooling tower water consists of 12% of Nitrospira genus and 22% of Fusobacterium genus. Conclusively, PEO serves as an effective method for treating wastewater, inhibiting microbial growth, degrading pollutants, and protecting metal from biocorrosion.

show abstract

Electrochemical technologies combined with physical, biological, and chemical processes for the treatment of pollutants and wastes: A review

Cited by 49 publications

References 124 publications

The Experimental Design Approach to Removal of Endocrine Disrupting Compounds from Domestic Wastewater by Electrooxidation Process

The Experimental Design Approach to Removal of Endocrine Disrupting Compounds from Domestic Wastewater by Electrooxidation Process

Electrocatalytic Reforming of Polylactic Acid Plastic Hydrolysate over Dynamically Formed γ-NiOOH

Application of photoelectrochemical oxidation of wastewater used in the cooling tower water and its influence on microbial corrosion

Contact Info

Product

Resources

About