Effects of zinc salt addition on perfluorooctanoic acid (PFOA) removal by electrocoagulation with aluminum electrodes

Li, Yueh-Feng; Hu, Ching-Yao; Lee, Yu‐Chi; Lo, Shang‐Lien

doi:10.1016/j.chemosphere.2021.132665

Cited by 12 publications

(10 citation statements)

References 57 publications

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“…Due to the C-F bond that is present in perfluorooctanoic acids, it exhibits great surface activity and heat resistance, which makes it very resistant to being eliminated [58,59]. PFOA is durable, and it is applied in a large number of industries [58]. As a result, PFOA is present in industrial wastewater in high concentrations reaching 1650 mg/L [58].…”

Section: Perfluorooctanoic Acid (Pfoa)mentioning

confidence: 99%

“…PFOA is durable, and it is applied in a large number of industries [58]. As a result, PFOA is present in industrial wastewater in high concentrations reaching 1650 mg/L [58]. It was also reported that PFOA is extensively present in watercourses, groundwater, animals, semen and breast milk samples, and humanoid blood [58,59].…”

Section: Perfluorooctanoic Acid (Pfoa)mentioning

confidence: 99%

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A Comprehensive Review of the Developments in Electrocoagulation for the Removal of Contaminants from Wastewater

Ammar,

Yousef,

Mahmoud

et al. 2023

Separations

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Water organic pollution has become a major issue. A large number of people suffer from the decline in water quality. In addition, polluted water can lead to health problems or excessive deaths. In this regard, an increasingly important method for efficient water treatment is electrocoagulation (EC), the technology that encompasses a small equipment size combined with a simple operation compared to other water treatment methods. The importance of EC is especially accentuated by the recent decarbonization efforts due to the increasing availability of renewable electricity systems. This review provides an overview of the most recent developments in EC technology as it pertains to wastewater treatment. The EC is preferred for organic wastewater treatment over other traditional treatment methods due to its easy setup and low material costs. Moreover, the EC is very powerful in destabilizing organic impurities by charge neutralization and then coagulating to form flocs. In addition, EC has shown high efficiency not only in removing various organic pollutants but also in emerging persistent contaminants, such as microplastics. For these reasons, the EC mechanisms and related functional modalities are reviewed, as well as extensive details are provided on the diversity of the removed contaminants. Overall, this review provides significant new knowledge of interest for environmental chemical researchers in particular and engineers in general on the details of the EC technology for wastewater treatment and water purification.

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Section: Perfluorooctanoic Acid (Pfoa)mentioning

confidence: 99%

Section: Perfluorooctanoic Acid (Pfoa)mentioning

confidence: 99%

A Comprehensive Review of the Developments in Electrocoagulation for the Removal of Contaminants from Wastewater

Ammar,

Yousef,

Mahmoud

et al. 2023

Separations

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“…In contrast, zinc oxide (ZnO) does not influence the degradation parameters (reasons are not clear). A clinical synergism in controlling the rise in the pH value (i.e., Zn(OH) + formation) and improvising the floatation abilities enhanced the PFOA complexation ability through 'Al-F' bonding occurrence in the presence of ZnCl2 [80]. Both flotation-based (i.e., upper floc) and coagulation-based (i.e., lower floc) have shown a two-way methodology in emphasizing the remediation process.…”

Section: Zinc Based Electrodesmentioning

confidence: 99%

Per-/Poly-fluoroalkyl Substances (PFASs) Treatment and Mechanistic Insights: Photo-catalyst and Photo-Electro-catalyst Materials Application

Penke

Kar

2022

Preprint

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The PFASs contamination (Per-/Poly-fluoroalkyl Substances ~ 4000 compounds) is influencing the humane through soil and aquifers contamination, resulting in the endocrine-disrupting symptoms (EDS). PFASs decontamination involves both (i) Capture/non-degradation techniques and (ii) Degradation techniques. In the present work, a detailed discussion on various photo-catalytic/electrocatalytic electrode materials (Fe/Ti/Zn/Bi/C etc.) over PFASs degradation is provided. The authors have focused onto the recent literature published in the last couple of years for citing research outputs and schematic figures. The analysis of both radical species (e.g., hydroxyl/sulphate species) and direct electron transfer (DET) mechanisms are given. An insightful discussion of the impact on various degradation mechanisms (decarboxylation, and hydrodefluorination) onto various PFASs has been provided. A different set of examples are provided in describing both electron (e-) based oxidation and hole (h+) based oxidation phenomenon. The state-of-the-art novel inventions towards pilot-scale studies and field-level applications are discussed with explaining the possible limitations (e.g., light source etc.). The factors influencing the degradation process (i.e., Electrode potential, Current density, Impact of dosage, pH, Radical species, Competing ions, Temperature and light source) are also detailed prior to the future perspective and conclusions.

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“…EC units are not complicated to install and do not require a large amount of material, and chemical addition are simple to operate, require a short startup period, are easy to control, have a high capacity for pollutant removal, facilitate the collection of produced sludge, and are relatively inexpensive and easy to acquire (Raschitor et al 2014;Deghles and Kurt 2016). The electrodes that are frequently utilized in an EC system are constructed of iron (Fe) or aluminum (Al), both of which are readily available (Chen et al 2020;Chezeau et al 2020;Li et al 2021).…”

Section: Introductionmentioning

confidence: 99%

Distillery industrial wastewater(DIW) treatment by the combination of sono(US), photo(UV) and electrocoagulation(EC) process

Asaithambi

Yesuf

Govindarajan

et al. 2022

Journal of Environmental Management

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Effects of zinc salt addition on perfluorooctanoic acid (PFOA) removal by electrocoagulation with aluminum electrodes

Cited by 12 publications

References 57 publications

A Comprehensive Review of the Developments in Electrocoagulation for the Removal of Contaminants from Wastewater

A Comprehensive Review of the Developments in Electrocoagulation for the Removal of Contaminants from Wastewater

Per-/Poly-fluoroalkyl Substances (PFASs) Treatment and Mechanistic Insights: Photo-catalyst and Photo-Electro-catalyst Materials Application

Distillery industrial wastewater(DIW) treatment by the combination of sono(US), photo(UV) and electrocoagulation(EC) process

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