1
|
Cifre-Herrando M, Roselló-Márquez G, García-Antón J. Is photoelectrocatalysis an efficient process to degrade endocrine disruptors chemicals? Environ Toxicol Pharmacol 2024; 107:104420. [PMID: 38499263 DOI: 10.1016/j.etap.2024.104420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Accepted: 03/14/2024] [Indexed: 03/20/2024]
Abstract
Endocrine disruptors chemicals (EDCs) pose significant health risks, including cancer, behavioral disorders, and infertility. In this study, we employed the photoelectrocatalysis (PEC) technique with optimized tungsten oxide (WO3) nanostructures as a photoanode to degrade three diverse EDCs: methiocarb, dimethyl phthalate, and 4-tert-butylphenol. PEC degradation tests were carried out for individual contaminants and a mixture of them, assessing efficiency across different EDC families. Ultra High-Performance Liquid Chromatography and Mass Spectrometry was used to control the course of the experiments. For individual solutions, 4-tert-butylphenol and methiocarb were 100% degraded at 1 hour of PEC degradation. Among the tested EDCs, dimethyl phthalate showed the highest resistance to degradation when treated individually. However, when assessed in a mixture with the other EDCs, the degradation efficiency of dimethyl phthalate increased compared to its individual treatment. Furthermore, four degradation intermediates were identified for each contaminant. Finally, toxicity tests revealed that the initial solution was more toxic than the samples treated for all the contaminants tested, except for the phthalate.
Collapse
Affiliation(s)
- M Cifre-Herrando
- Ingeniería Electroquímica y Corrosión (IEC), Instituto Universitario de Seguridad Industrial, Radiofísica y Medioambiental (ISIRYM), Universitat Politècnica de València, C/Camino de Vera, Valencia 46022, Spain
| | - G Roselló-Márquez
- Ingeniería Electroquímica y Corrosión (IEC), Instituto Universitario de Seguridad Industrial, Radiofísica y Medioambiental (ISIRYM), Universitat Politècnica de València, C/Camino de Vera, Valencia 46022, Spain
| | - J García-Antón
- Ingeniería Electroquímica y Corrosión (IEC), Instituto Universitario de Seguridad Industrial, Radiofísica y Medioambiental (ISIRYM), Universitat Politècnica de València, C/Camino de Vera, Valencia 46022, Spain.
| |
Collapse
|
2
|
Boudalia M, Fernández-Domene RM, Guo L, Echihi S, Belghiti ME, Zarrouk A, Bellaouchou A, Guenbour A, García-Antón J. Experimental and Theoretical Tests on the Corrosion Protection of Mild Steel in Hydrochloric Acid Environment by the Use of Pyrazole Derivative. Materials (Basel) 2023; 16:678. [PMID: 36676414 PMCID: PMC9862199 DOI: 10.3390/ma16020678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/21/2022] [Accepted: 12/30/2022] [Indexed: 06/17/2023]
Abstract
In this study, 1,5-diallyl-1H-pyrazolo [3,4-d] pyrimidin-4 (5H)-one (PPD) was evaluated as an anticorrosion agent for mild steel (MS) in 1 M HCl. The analysis was performed by weight loss (WL), potentiodynamic polarization measurement, and electrochemical impedance spectroscopy (EIS). The Tafel polarization showed that PPD is a mixed-type inhibitor and reaches 94% of the protective efficiency at 10-3 M. EIS results indicated that the resistance to charge transfer increases with increasing inhibitor concentration and the corrosion of MS is controlled by a charge transfer process. The inhibitor adsorption on the MS surface obeyed the Langmuir's adsorption isotherm. Thermodynamic parameters were calculated to elaborate the corrosion inhibition mechanism. The micrographic analysis revealed the existence of a barrier layer on the electrode surface with the presence of PPD. Theoretical examinations performed by electronic/atomic computer simulations confirmed that the obtained results were found to be consistent with experimental findings.
Collapse
Affiliation(s)
- Maria Boudalia
- Laboratory of Materials, Nanotechnology and Environment, Faculty of Sciences, Mohammed V University in Rabat, P.O. Box 1014, Rabat 10090, Morocco
- Ingeniería Electroquímica y Corrosión (IEC), Instituto Universitario de Seguridad Industrial, Radiofísica y Medioambiental (ISIRYM), Universitat Politècnica de València, Camino de Vera, s/n, 46022 Valencia, Spain
| | - R. M. Fernández-Domene
- Ingeniería Electroquímica y Corrosión (IEC), Instituto Universitario de Seguridad Industrial, Radiofísica y Medioambiental (ISIRYM), Universitat Politècnica de València, Camino de Vera, s/n, 46022 Valencia, Spain
- Departamento de Ingeniería Química, Universitat de València, Av. de les Universitats, s/n, 46100 Burjassot, Spain
| | - L. Guo
- School of Material and Chemical Engineering, Tongren University, Tongren 554300, China
| | - S. Echihi
- Laboratory of Materials, Nanotechnology and Environment, Faculty of Sciences, Mohammed V University in Rabat, P.O. Box 1014, Rabat 10090, Morocco
- Laboratory of Materials Engineering for the Environment and Natural Resources, Faculty of Sciences and Techniques, University Moulay Ismail of Meknes, BP 509 Boutalamine, Errachidia 52000, Morocco
| | - M. E. Belghiti
- Laboratoire de Chimie Physique des Matériaux, Faculté des Sciences Ben M’Sick, Hassan II University of Casablanca, Casablanca 20000, Morocco
- Laboratory of Nernest Technology, 163 Willington Street, Sherbrooke, QC J1H5C7, Canada
| | - A. Zarrouk
- Laboratory of Materials, Nanotechnology and Environment, Faculty of Sciences, Mohammed V University in Rabat, P.O. Box 1014, Rabat 10090, Morocco
| | - A. Bellaouchou
- Laboratory of Materials, Nanotechnology and Environment, Faculty of Sciences, Mohammed V University in Rabat, P.O. Box 1014, Rabat 10090, Morocco
| | - A. Guenbour
- Laboratory of Materials, Nanotechnology and Environment, Faculty of Sciences, Mohammed V University in Rabat, P.O. Box 1014, Rabat 10090, Morocco
| | - J. García-Antón
- Ingeniería Electroquímica y Corrosión (IEC), Instituto Universitario de Seguridad Industrial, Radiofísica y Medioambiental (ISIRYM), Universitat Politècnica de València, Camino de Vera, s/n, 46022 Valencia, Spain
| |
Collapse
|
3
|
Cifre-Herrando M, Roselló-Márquez G, García-García DM, García-Antón J. Degradation of Methylparaben Using Optimal WO 3 Nanostructures: Influence of the Annealing Conditions and Complexing Agent. Nanomaterials (Basel) 2022; 12:4286. [PMID: 36500910 PMCID: PMC9740506 DOI: 10.3390/nano12234286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 11/28/2022] [Accepted: 11/30/2022] [Indexed: 06/17/2023]
Abstract
In this work, WO3 nanostructures were synthesized with different complexing agents (0.05 M H2O2 and 0.1 M citric acid) and annealing conditions (400 °C, 500 °C and 600 °C) to obtain optimal WO3 nanostructures to use them as a photoanode in the photoelectrochemical (PEC) degradation of an endocrine disruptor chemical. These nanostructures were studied morphologically by a field emission scanning electron microscope. X-ray photoelectron spectroscopy was performed to provide information of the electronic states of the nanostructures. The crystallinity of the samples was observed by a confocal Raman laser microscope and X-ray diffraction. Furthermore, photoelectrochemical measurements (photostability, photoelectrochemical impedance spectroscopy, Mott-Schottky and water-splitting test) were also performed using a solar simulator with AM 1.5 conditions at 100 mW·cm-2. Once the optimal nanostructure was obtained (citric acid 0.01 M at an annealing temperature of 600 °C), the PEC degradation of methylparaben (CO 10 ppm) was carried out. It was followed by ultra-high-performance liquid chromatography and mass spectrometry, which allowed to obtain the concentration of the contaminant during degradation and the identification of degradation intermediates. The optimized nanostructure was proved to be an efficient photocatalyst since the degradation of methylparaben was performed in less than 4 h and the kinetic coefficient of degradation was 0.02 min-1.
Collapse
|
4
|
Batista-Grau P, Fernández-Domene R, Sánchez-Tovar R, García-Antón J. Control on the morphology and photoelectrocatalytic properties of ZnO nanostructures by simple anodization varying electrolyte composition. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2020.114933] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
5
|
Roselló-Márquez G, Fernández-Domene RM, Sánchez-Tovar R, García-Antón J. Photoelectrocatalyzed degradation of organophosphorus pesticide fenamiphos using WO 3 nanorods as photoanode. Chemosphere 2020; 246:125677. [PMID: 31884230 DOI: 10.1016/j.chemosphere.2019.125677] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 12/10/2019] [Accepted: 12/15/2019] [Indexed: 06/10/2023]
Abstract
In this study, WO3 nanostructures were synthesized by the electrochemical anodization technique to use them on the degradation of persistent organic compounds such as the pesticide fenamiphos. The acids electrolyte used during the anodization were two different: 1.5 M H2SO4 - 0.05 M H2O2 and 1.5 M CH4O3S - 0.05 M H2O2. Once the samples have been manufactured, they have been subjected to different tests to analyze the properties of the nanostructures. With Field Emission Scanning Electron Microscopy (FE-SEM) the samples have been examined morphologically, their composition and crystallinity has been studied through Raman Spectroscopy and their photoelectrochemical behaviour by Photoelectrochemical Impedance Spectroscopy (PEIS). Finally, degradation tests have been carried out using the technique known as photoelectrocatalysis (PEC). The conditions that were applied in this technique were a potential of 1 VAg/AgCl and simulated solar illumination. The degradation process was monitored by UV-Visible and High-Performance liquid Chromatography (HPLC) to control the course of the experiment. The nanostructures obtained with 1.5 M CH4O3S - 0.05 M H2O2 electrolyte showed a better photoelectrochemical behaviour than nanostructures synthesized with 1.5 M H2SO4 - 0.05 M H2O2. The fenamiphos degradation was achieved at 2 h of experiment and the intermediate formation was noticed at 1 h of PEC experiment.
Collapse
Affiliation(s)
- G Roselló-Márquez
- Ingeniería Electroquímica y Corrosión (IEC), Instituto Universitario de Seguridad Industrial, Radiofísica y Medioambiental (ISIRYM), Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain
| | - R M Fernández-Domene
- Ingeniería Electroquímica y Corrosión (IEC), Instituto Universitario de Seguridad Industrial, Radiofísica y Medioambiental (ISIRYM), Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain
| | - R Sánchez-Tovar
- Ingeniería Electroquímica y Corrosión (IEC), Instituto Universitario de Seguridad Industrial, Radiofísica y Medioambiental (ISIRYM), Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain; Departmento de Ingeniería Química, Universitat de València, Av de les Universitats, s/n, 46100, Burjassot, Spain
| | - J García-Antón
- Ingeniería Electroquímica y Corrosión (IEC), Instituto Universitario de Seguridad Industrial, Radiofísica y Medioambiental (ISIRYM), Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain.
| |
Collapse
|
6
|
Roselló-Márquez G, Fernández-Domene R, Sánchez-Tovar R, García-Antón J. Influence of annealing conditions on the photoelectrocatalytic performance of WO3 nanostructures. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116417] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
7
|
Roselló-Márquez G, Fernández-Domene RM, Sánchez-Tovar R, García-Carrión S, Lucas-Granados B, García-Antón J. Photoelectrocatalyzed degradation of a pesticides mixture solution (chlorfenvinphos and bromacil) by WO 3 nanosheets. Sci Total Environ 2019; 674:88-95. [PMID: 31004907 DOI: 10.1016/j.scitotenv.2019.04.150] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 03/25/2019] [Accepted: 04/10/2019] [Indexed: 06/09/2023]
Abstract
A photoelectrocatalyst consisting of WO3 nanosheets or nanorods has been synthesized by electrochemical anodization under hydrodynamic conditions, and has been used for the degradation of two toxic pesticides: chlorfenvinphos and bromacil. Nanostructures have been characterized by FESEM and Raman spectroscopy. Photoelectrochemical degradation tests have been carried out both for individual pesticide solutions and for a mixture solution, and the concentration evolution with time has been followed by UV-Vis spectrophotometry. For individual pesticides, pseudo-first order kinetic coefficients of 0.402h-1 and 0.324h-1 have been obtained for chlorfenvinphos and bromacil, respectively, while for the mixture solution, these kinetic coefficients have been 0.162h-1 and 0.408h-1. The change in behavior towards pesticide degradation depending on whether individual or mixture solutions were used might be indicative of a competitive process between the two pesticide molecules when interacting with the WO3 nanostructures surface or when approaching the semiconductor/electrolyte interface.
Collapse
Affiliation(s)
- G Roselló-Márquez
- Ingeniería Electroquímica y Corrosión (IEC), Instituto Universitario de Seguridad Industrial, Radiofísica y Medioambiental (ISIRYM), Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain
| | - R M Fernández-Domene
- Ingeniería Electroquímica y Corrosión (IEC), Instituto Universitario de Seguridad Industrial, Radiofísica y Medioambiental (ISIRYM), Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain
| | - R Sánchez-Tovar
- Ingeniería Electroquímica y Corrosión (IEC), Instituto Universitario de Seguridad Industrial, Radiofísica y Medioambiental (ISIRYM), Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain
| | - S García-Carrión
- Ingeniería Electroquímica y Corrosión (IEC), Instituto Universitario de Seguridad Industrial, Radiofísica y Medioambiental (ISIRYM), Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain
| | - B Lucas-Granados
- Ingeniería Electroquímica y Corrosión (IEC), Instituto Universitario de Seguridad Industrial, Radiofísica y Medioambiental (ISIRYM), Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain
| | - J García-Antón
- Ingeniería Electroquímica y Corrosión (IEC), Instituto Universitario de Seguridad Industrial, Radiofísica y Medioambiental (ISIRYM), Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain.
| |
Collapse
|
8
|
Fernández-Domene R, Roselló-Márquez G, Sánchez-Tovar R, Lucas-Granados B, García-Antón J. Photoelectrochemical removal of chlorfenvinphos by using WO3 nanorods: Influence of annealing temperature and operation pH. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.11.049] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
9
|
Fernández-Domene RM, Sánchez-Tovar R, Lucas-Granados B, Muñoz-Portero MJ, Ramírez-Grau R, García-Antón J. Visible-light photoelectrodegradation of diuron on WO 3 nanostructures. J Environ Manage 2018; 226:249-255. [PMID: 30121460 DOI: 10.1016/j.jenvman.2018.08.044] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 07/18/2018] [Accepted: 08/08/2018] [Indexed: 06/08/2023]
Abstract
The degradation of pesticide diuron has been explored by photoelectrocatalysis (PEC) under visible light illumination using two different WO3 nanostructures, obtained by anodization of tungsten. The highest degradation efficiency (73%) was obtained for WO3 nanosheets synthesized in the presence of small amounts of hydrogen peroxide (0.05 M). For that nanostructure, the kinetic coefficient for diuron degradation was 133% higher than that for the other nanostructure (anodized in the presence of fluoride anions). These results have been explained by taking into account the different architecture and dimensions of the two WO3 nanostructures under study.
Collapse
Affiliation(s)
- R M Fernández-Domene
- Ingeniería Electroquímica y Corrosión (IEC), Departamento de Ingeniería Química y Nuclear, ETSI Industriales, Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain
| | - R Sánchez-Tovar
- Ingeniería Electroquímica y Corrosión (IEC), Departamento de Ingeniería Química y Nuclear, ETSI Industriales, Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain
| | - B Lucas-Granados
- Ingeniería Electroquímica y Corrosión (IEC), Departamento de Ingeniería Química y Nuclear, ETSI Industriales, Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain
| | - M J Muñoz-Portero
- Ingeniería Electroquímica y Corrosión (IEC), Departamento de Ingeniería Química y Nuclear, ETSI Industriales, Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain
| | - R Ramírez-Grau
- Ingeniería Electroquímica y Corrosión (IEC), Departamento de Ingeniería Química y Nuclear, ETSI Industriales, Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain
| | - J García-Antón
- Ingeniería Electroquímica y Corrosión (IEC), Departamento de Ingeniería Química y Nuclear, ETSI Industriales, Universitat Politècnica de València, Camino de Vera s/n, 46022, Valencia, Spain.
| |
Collapse
|
10
|
Sánchez-Tovar R, Blasco-Tamarit E, Fernández-Domene R, Lucas-Granados B, García-Antón J. Should TiO 2 nanostructures doped with Li + be used as photoanodes for photoelectrochemical water splitting applications? J Catal 2017. [DOI: 10.1016/j.jcat.2017.03.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
11
|
Drouet S, Creus J, Collière V, Amiens C, García-Antón J, Sala X, Philippot K. A porous Ru nanomaterial as an efficient electrocatalyst for the hydrogen evolution reaction under acidic and neutral conditions. Chem Commun (Camb) 2017; 53:11713-11716. [DOI: 10.1039/c7cc05615j] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A porous Ru nanomaterial exhibits high electrocatalytic performance and excellent durability for the hydrogen evolution reaction (HER) under both acidic and neutral conditions.
Collapse
Affiliation(s)
- S. Drouet
- Laboratoire de Chimie de Coordination du CNRS
- Toulouse Cedex 04
- France
- Université de Toulouse
- UPS
| | - J. Creus
- Laboratoire de Chimie de Coordination du CNRS
- Toulouse Cedex 04
- France
- Université de Toulouse
- UPS
| | - V. Collière
- Laboratoire de Chimie de Coordination du CNRS
- Toulouse Cedex 04
- France
- Université de Toulouse
- UPS
| | - C. Amiens
- Laboratoire de Chimie de Coordination du CNRS
- Toulouse Cedex 04
- France
- Université de Toulouse
- UPS
| | - J. García-Antón
- Departament de Química
- Facultat de Ciències
- Universitat Autònoma de Barcelona
- 08193 Bellaterra
- Spain
| | - X. Sala
- Departament de Química
- Facultat de Ciències
- Universitat Autònoma de Barcelona
- 08193 Bellaterra
- Spain
| | - K. Philippot
- Laboratoire de Chimie de Coordination du CNRS
- Toulouse Cedex 04
- France
- Université de Toulouse
- UPS
| |
Collapse
|
12
|
Borràs-Ferrís J, Sánchez-Tovar R, Blasco-Tamarit E, Fernández-Domene R, García-Antón J. Effect of Reynolds number and lithium cation insertion on titanium anodization. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.02.160] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
13
|
García-Antón J, Fernández-Domene R, Sánchez-Tovar R, Escrivà-Cerdán C, Leiva-García R, García V, Urtiaga A. Improvement of the electrochemical behaviour of Zn-electroplated steel using regenerated Cr (III) passivation baths. Chem Eng Sci 2014. [DOI: 10.1016/j.ces.2014.03.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
14
|
Escrivà-Cerdán C, Blasco-Tamarit E, García-García D, García-Antón J, Akid R, Walton J. Effect of temperature on passive film formation of UNS N08031 Cr–Ni alloy in phosphoric acid contaminated with different aggressive anions. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2013.08.040] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
15
|
Escrivà-Cerdán C, Blasco-Tamarit E, García-García D, García-Antón J, Guenbour A. Effect of potential formation on the electrochemical behaviour of a highly alloyed austenitic stainless steel in contaminated phosphoric acid at different temperatures. Electrochim Acta 2012. [DOI: 10.1016/j.electacta.2012.07.012] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
16
|
Fernández-Domene R, Blasco-Tamarit E, García-García D, García-Antón J. Cavitation corrosion and repassivation kinetics of titanium in a heavy brine LiBr solution evaluated by using electrochemical techniques and Confocal Laser Scanning Microscopy. Electrochim Acta 2011. [DOI: 10.1016/j.electacta.2011.09.034] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
17
|
Arroyo MG, Pérez-Herranz V, Montañés MT, García-Antón J, Guiñón JL. Effect of pH and chloride concentration on the removal of hexavalent chromium in a batch electrocoagulation reactor. J Hazard Mater 2009; 169:1127-1133. [PMID: 19464794 DOI: 10.1016/j.jhazmat.2009.04.089] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2008] [Revised: 04/17/2009] [Accepted: 04/20/2009] [Indexed: 05/27/2023]
Abstract
In this work, the effect of pH and chloride ions concentration on the removal of Cr(VI) from wastewater by batch electrocoagulation using iron plate electrodes has been investigated. The initial solution pH was adjusted with different concentrations of H(2)SO(4). The presence of chloride ions enhances the anode dissolution due to pitting corrosion. Fe(2+) ions formed during the anode dissolution cause the reduction of Cr(VI) to form Cr(III), which are co-precipitated with Fe(3+) ions at relatively low pH. The reduction degree of Cr(VI) to Cr(III) and the solubility of metal hydroxide species (both chromic and iron hydroxides) depend on pH. At higher concentrations of H(2)SO(4), the reduction of Cr(VI) to Cr(III) by Fe(2+) ions is preferred, but the coagulation of Fe(3+) and Cr(III) is favoured at the lower H(2)SO(4) concentrations.
Collapse
Affiliation(s)
- M G Arroyo
- Departamento de Ingeniería Química y Nuclear, Universidad Politécnica de Valencia, 46022 Valencia, Spain
| | | | | | | | | |
Collapse
|
18
|
García-Gabaldón M, Pérez-Herranz V, García-Antón J, Guiñón JL. Electrochemical study of the activating solution for electroless plating of polymers. J APPL ELECTROCHEM 2007. [DOI: 10.1007/s10800-007-9374-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
19
|
|
20
|
|
21
|
|
22
|
García-Antón J, Guiñón J. Determination of Hyamine 2389 critical micelle concentration (CMC) by means of conductometric, spectrophotometric and polarographic methods. ACTA ACUST UNITED AC 1991. [DOI: 10.1016/0166-6622(91)80305-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
23
|
Guiñón J, Grima R, García-Antón J. Electrochemical study of the components of Karl Fischer reagent on platinum rotating disk electrode. Electrochim Acta 1991. [DOI: 10.1016/0013-4686(91)85315-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
24
|
|