Application of electrochemical advanced oxidation to bisphenol A degradation in water. Effect of sulfate and chloride ions
At a Glance
Section titled âAt a Glanceâ| Metadata | Details |
|---|---|
| Publication Date | 2017-12-05 |
| Journal | Chemosphere |
| Authors | Rutely C. Burgos-Castillo, Ignasi Sirés, Mika SillanpÀÀ, Enric Brillas |
| Institutions | Lappeenranta-Lahti University of Technology, Universitat de Barcelona |
| Citations | 95 |
Abstract
Section titled âAbstractâElectrochemical oxidation with electrogenerated H<sub>2</sub>O<sub>2</sub> (EO- H<sub>2</sub>O<sub>2</sub>), electro-Fenton (EF), photoelectro-Fenton (PEF) and solar PEF (SPEF) have been applied to mineralize bisphenol A solutions in 0.050 M Na<sub>2</sub>SO<sub>4</sub> or 0.008 M NaCl + 0.047 M Na<sub>2</sub>SO<sub>4</sub> at pH 3.0. The assays were performed in an undivided cell with a boron-doped diamond (BDD) anode and an air-diffusion cathode for continuous H<sub>2</sub>O<sub>2</sub> production. The PEF and SPEF processes yielded almost total mineralization due to the potent synergistic action of generated hydroxyl radicals and active chlorine, in conjunction with the photolytic action of UV radiation. The higher intensity of UV rays from sunlight explained the superior oxidation ability of SPEF. The effect of applied current density was studied in all treatments, whereas the role of bisphenol A concentration was examined in PEF. Bisphenol A abatement followed a pseudo-first-order kinetics, which was very quick in SPEF since UV light favored a large production of hydroxyl radicals from Fentonâs reaction. Eight non-chlorinated and six chlorinated aromatics were identified as primary products in the chloride matrix. Ketomalonic, tartronic, maleic and oxalic acids were detected as final short-chain aliphatic carboxylic acids. The large stability of Fe(III)-oxalate complexes in EF compared to their fast photomineralization in PEF and PEF accounted for by the superior oxidation power of the latter processes.
Tech Support
Section titled âTech SupportâOriginal Source
Section titled âOriginal SourceâReferences
Section titled âReferencesâ- 2017 - Adsorptive removal of bisphenol A (BPA) from aqueous solution: a review [Crossref]
- 2002 - Anodic oxidation of 4-chlorophenoxyacetic acid on synthetic boron-doped diamond electrode
- 2009 - Electro-Fenton and related electrochemical technologies based on Fentonâs reaction chemistry [Crossref]
- 2015 - Bisphenol A, nonylphenols, benzophenones, and benzotriazoles in soils, groundwater, surface water, sediments, and food: a review [Crossref]
- 2017 - Developmental bisphenol A exposure impairs sperm function and reproduction in zebrafish [Crossref]
- 2017 - Scaled-up electrochemical reactor with a fixed bed three-dimensional cathode for electro-Fenton process: application to the treatment of bisphenol A [Crossref]
- 2015 - Global assessment of bisphenol a in the environment: review and analysis of its occurrence and bioaccumulation [Crossref]
- 2013 - Solar light-induced photoelectrocatalytic degradation of bisphenol-A on TiO2/ITO film anode and BDD cathode [Crossref]
- 2017 - Pharmaceuticals and personal care products (PPCPs) in the freshwater aquatic environment [Crossref]
- 2013 - Comparative electro-Fenton and UVA photoelectro-Fenton degradation of the antibiotic sulfanilamide using a stirred BDD/air-diffusion tank reactor [Crossref]