1
|
Peralta-Reyes E, Regalado-Méndez A, Chimeo-Sánchez AA, Robles-Gómez EE, Natividad R. Electrochemical degradation of ciprofloxacin through a DoE-driven optimization in a filter-press type reactor under batch recirculation mode. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2023; 88:1294-1316. [PMID: 37771228 PMCID: wst_2023_279 DOI: 10.2166/wst.2023.279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/30/2023]
Abstract
In this work, the electrochemical degradation of ciprofloxacin (CIP) was studied in a filter-press-type reactor without division in a batch recirculation manner. For this purpose, two boron-doped diamond (BDD) electrodes (as cathode and anode) were employed. Also, the optimal operating conditions were found by response surface methodology (RSM) following a central composite face-centered design with three factors, namely current intensity (i), initial pH (pH0), and initial concentration ([C]0) with two responses, namely remotion efficiency (η) and operating cost. Optimal operating conditions were i = 3 A, pH0 = 8.49, and [C]0 = 33.26 mg L-1 within an electrolysis time of 5 h, leading to a maximum removal efficiency of 93.49% with a minimum operating cost of $0.013 USD L-1. Also, a TOC analysis shows an 80% of mineralization extent with an energy consumption of 5.11 kWh g-1 TOC. Furthermore, the CIP degradation progress was followed by mass spectrometry (LC/MS) and a degradation pathway is proposed.
Collapse
Affiliation(s)
- Ever Peralta-Reyes
- Investigation Laboratories, Universidad del Mar, Puerto Ángel, Oaxaca 70902, México E-mail:
| | | | | | - Edson E Robles-Gómez
- Investigation Laboratories, Universidad del Mar, Puerto Ángel, Oaxaca 70902, México
| | - Reyna Natividad
- Chemical Engineering Laboratory, Centro Conjunto de Investigación en Química Sustentable, UAEMex-UNAM, Universidad Autónoma del Estado de México, Estado de México, Toluca 50200, México
| |
Collapse
|
2
|
Kim JG, Kim HB, Lee S, Kwon EE, Baek K. Mechanistic investigation into flow-through electrochemical oxidation of sulfanilamide for groundwater using a graphite anode. CHEMOSPHERE 2022; 307:136106. [PMID: 35988764 DOI: 10.1016/j.chemosphere.2022.136106] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 07/28/2022] [Accepted: 08/15/2022] [Indexed: 06/15/2023]
Abstract
The technical effectiveness/merit of electrochemical oxidation (EO) has been recognized. Nonetheless, its practical application to groundwater remediation has not been fully implemented due to several technical challenges. To overcome the technical incompleteness, this study adopted a graphite anode in the flow-through system and studied the mechanistic roles of a graphite anode. To this end, groundwater contaminated with sulfanilamide was remediated by means of EO, and sulfanilamide oxidation was quantitatively determined in this study. Approximately 60% of sulfanilamide was degraded at the anode zone, and such observation offered that the removal of sulfanilamide was not closely related with current variations (10-100 mA). However, this study delineated that sulfanilamide removal is contingent on the flow speed. For example, the removal of sulfanilamide was lowered from 59 to 25% owing to a short contact time when the flow velocity was increased from 0.14 to 0.55 cm/min. This study also delineated that a shorter anode-cathode distance could offer a favorable chance to enhance the removal of sulfanilamide even under an identical current. A shorter distance could offer a chance to save energy due to the lower voltage operation. This study also offered that chloride (Cl-) and sulfate (SO42-) electrolytes served a crucial role in the generation of active species. In contrast, bicarbonate (HCO3-) and synthetic groundwater electrolytes impeded the oxidation rate because HCO3- scavenged the other active species. In an effort to seek the oxidation mechanisms of a graphite anode, scavenger, cyclic voltammetry test, and electron https://en.wikipedia.org/wiki/Electron_paramagnetic_resonanceparamagnetic resonance (EPR) analysis were done. From a series of the tests, it was inferred that a graphite anode did not directly affect the generation of the active species. Thus, the prevalence of the oxygenated functional groups on an anode surface could be the main mechanism in sulfanilamide removal due to the enhanced electron transfer.
Collapse
Affiliation(s)
- Jong-Gook Kim
- Department of Environment & Energy (BK21 FOUR), Jeonbuk National University, 567 Baekje-daero, Deokjin, Jeonju, Jeollabukdo, 54896, Republic of Korea; Soil Environment Research Center, Jeonbuk National University, 567 Baekje-daero, Deokjin, Jeonju, Jeollabukdo, 54896, Republic of Korea
| | - Hye-Bin Kim
- Department of Environment & Energy (BK21 FOUR), Jeonbuk National University, 567 Baekje-daero, Deokjin, Jeonju, Jeollabukdo, 54896, Republic of Korea; Soil Environment Research Center, Jeonbuk National University, 567 Baekje-daero, Deokjin, Jeonju, Jeollabukdo, 54896, Republic of Korea
| | - Sumin Lee
- Department of Environment & Energy (BK21 FOUR), Jeonbuk National University, 567 Baekje-daero, Deokjin, Jeonju, Jeollabukdo, 54896, Republic of Korea; Soil Environment Research Center, Jeonbuk National University, 567 Baekje-daero, Deokjin, Jeonju, Jeollabukdo, 54896, Republic of Korea
| | - Eilhann E Kwon
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, Republic of Korea
| | - Kitae Baek
- Department of Environment & Energy (BK21 FOUR), Jeonbuk National University, 567 Baekje-daero, Deokjin, Jeonju, Jeollabukdo, 54896, Republic of Korea; Soil Environment Research Center, Jeonbuk National University, 567 Baekje-daero, Deokjin, Jeonju, Jeollabukdo, 54896, Republic of Korea; School of Civil/Environmental/Resource and Energy Engineering, Jeonbuk National University, 567 Baekje-daero, Deokjin, Jeonju, Jeollabukdo, 54896, Republic of Korea.
| |
Collapse
|
3
|
Kiendrebeogo M, Karimi Estahbanati MR, Ouarda Y, Drogui P, Tyagi RD. Electrochemical degradation of nanoplastics in water: Analysis of the role of reactive oxygen species. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 808:151897. [PMID: 34826468 DOI: 10.1016/j.scitotenv.2021.151897] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 11/14/2021] [Accepted: 11/19/2021] [Indexed: 06/13/2023]
Abstract
Microplastics and nanoplastics (NPs) are emerging water contaminants which have recently gained lots of attention because of their effects on the aquatic systems and human life. Most of the previous works on the treatment of plastic pollution in water have been focused on microplastics and a very limited study has been performed on the NPs treatment. In this work, the role of main reactive oxygen species (ROSs) in the electrooxidation (EO) and electro-peroxidation (EO-H2O2) of NPs in water is investigated. In-situ generation of hydroxyl radicals (•OH), persulfates (S2O82-), and hydrogen peroxide (H2O2) were performed using boron-doped diamond (BDD) as the anode, whereas titanium (in EO process) and carbon felt (CF, in EO-H2O2 process) were used as cathode. In the EO process, NPs were mainly oxidized by two types of ROSs on the BDD surface: (i) •OH from water discharge and (ii) SO4•- via S2O82- reaction with •OH. In EO-H2O2 process, NPs were additionally degraded by •OH formed from H2O2 decomposition as well as SO4•- generated from direct or indirect reactions with H2O2. Analysis of the degradation of NPs showed that EO-H2O2 process was around 2.6 times more effective than EO process. The optimum amount of NPs degradation efficiency of 86.8% was obtained using EO-H2O2 process at the current density of 36 mA·cm-2, 0.03 M Na2SO4, pH of 2, and 40 min reaction time. In addition, 3D EEM fluorescence analysis confirmed the degradation of NPs. Finally, the economic analysis showed the treatment of NPs using EO-H2O2 process had an operating cost of 2.3 $US.m-3, which was around 10 times less than the EO process. This study demonstrated that the in-situ generation of ROSs can significantly enhance the degradation of NPs in water.
Collapse
Affiliation(s)
- Marthe Kiendrebeogo
- Institut National de la Recherche Scientifique (INRS), Centre Eau Terre Environnement (ETE), 490 rue de la Couronne, Québec G1K 9A9, QC, CANADA
| | - M R Karimi Estahbanati
- Institut National de la Recherche Scientifique (INRS), Centre Eau Terre Environnement (ETE), 490 rue de la Couronne, Québec G1K 9A9, QC, CANADA.
| | - Yassine Ouarda
- Institut National de la Recherche Scientifique (INRS), Centre Eau Terre Environnement (ETE), 490 rue de la Couronne, Québec G1K 9A9, QC, CANADA
| | - Patrick Drogui
- Institut National de la Recherche Scientifique (INRS), Centre Eau Terre Environnement (ETE), 490 rue de la Couronne, Québec G1K 9A9, QC, CANADA.
| | - R D Tyagi
- Distinguished Prof Huzhou University, China; BOSK Bioproducts, Québec, Canada
| |
Collapse
|
4
|
Sun Y, Zhang C, Rong H, Wu L, Lian B, Wang Y, Chen Y, Tu Y, Waite TD. Electrochemical Ni-EDTA degradation and Ni removal from electroless plating wastewaters using an innovative Ni-doped PbO 2 anode: Optimization and mechanism. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127655. [PMID: 34773795 DOI: 10.1016/j.jhazmat.2021.127655] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 10/18/2021] [Accepted: 10/27/2021] [Indexed: 06/13/2023]
Abstract
In this work, a novel Ni-doped PbO2 anode (Ni-PbO2) was prepared via a co-electrodeposition method and used to remove Ni-ethylenediaminetetraacetic acid (Ni-EDTA) from solutions typical of electroless nickel plating wastewater. Compared with a pure PbO2 electrode, Ni doping increased the oxygen evolution potential as well as the reactive surface area and reactive site concentration and reduced the electron transfer resistance thereby resulting in superior Ni-EDTA degradation performance. The 1% Ni-doped PbO2 electrode exhibited the best electrochemical oxidation activity with a Ni-EDTA removal efficiency of 96.5 ± 1.2%, a Ni removal efficiency of 52.1 ± 1.4% and an energy consumption of 2.6 kWh m-3. Further investigations revealed that 1% Ni doping enhanced both direct oxidation and hydroxyl radical mediated oxidation processes involved in Ni-EDTA degradation. A mechanism for Ni-EDTA degradation is proposed based on the identified products. The free nickel ion concentration initially increased as a result of the degradation of Ni-EDTA complexes and subsequently decreased as a consequence of nickel electrodeposition on the cathode surface. Further characterization of the cathode deposits by X-ray diffraction and X-ray photoelectron spectra indicated that the deposition products were a mixture of Ni0, NiO and Ni(OH)2 with elemental Ni accounting for roughly 80% of the deposited nickel. Results of this study pave the way for the application of anodic oxidation processes for efficient degradation of Ni-containing complexes and recovery of Ni from nickel-containing wastewaters.
Collapse
Affiliation(s)
- Yuyang Sun
- UNSW Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia.
| | - Changyong Zhang
- UNSW Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia.
| | - Hongyan Rong
- UNSW Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia.
| | - Lei Wu
- UNSW Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia; UNSW Centre for Transformational Environmental Technologies, Yixing, Jiangsu Province 214206, PR China.
| | - Boyue Lian
- UNSW Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia.
| | - Yuan Wang
- UNSW Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia; UNSW Centre for Transformational Environmental Technologies, Yixing, Jiangsu Province 214206, PR China.
| | - Yong Chen
- Jiangsu Provincial Key Laboratory of Environmental Engineering, Jiangsu Provincial Academy of Environmental Science, Nanjing, Jiangsu 210036, PR China.
| | - Yong Tu
- Jiangsu Provincial Academy of Environmental Sciences Environmental Technology Co., Ltd., Nanjing, Jiangsu 210036, PR China.
| | - T David Waite
- UNSW Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia; UNSW Centre for Transformational Environmental Technologies, Yixing, Jiangsu Province 214206, PR China.
| |
Collapse
|
5
|
Paired electrochemical removal of nitrate and terbuthylazine pesticide from groundwater using mesh electrodes. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138354] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
6
|
McBeath ST, Graham NJD. Simultaneous electrochemical oxidation and ferrate generation for the treatment of atrazine: A novel process for water treatment applications. JOURNAL OF HAZARDOUS MATERIALS 2021; 411:125167. [PMID: 33858110 DOI: 10.1016/j.jhazmat.2021.125167] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 12/22/2020] [Accepted: 01/14/2021] [Indexed: 06/12/2023]
Abstract
A novel process involving the simultaneous electrochemical-oxidation (EO) and electrosynthesis of ferrate has been investigated for the treatment of the commonly detected and recalcitrant pesticide, atrazine. The present study considered the electrosynthesis of ferrate, in neutral pH, using low concentration iron (Fe2+) representative of raw water levels and its subsequent effect on atrazine degradation. Ferrate synthesis was unaffected by current density (10-80 mA cm-2), indicating mass transport limitations. Synthesis was affected by the initial iron concentration, whereby 0.051, 0.108 and 0.332 mg L-1 was generated with an Fe2+ concentration of 0.5, 1.0 and 3.0 mg L-1, respectively. When operating under simultaneous EO and ferrate oxidation, atrazine degradation exceeded that of a solely EO process. From an initial concentration of 2.00 mg L-1, atrazine was degraded to 1.34, 1.05 and 0.51 mg L-1 during 10, 40 and 80 mA cm-2, characterised by pseudo-first-order kinetics. Degradation with electrochemically-generated ferrate could be described by second-order kinetics, and yielded a degradation rate constant of 23.5 M-1 s-1. The effect of natural organic matter (NOM) on atrazine degradation was also investigated. Ferrate was observed to be mostly scavenged by resorcinol, a representative NOM compound, having a second-order reaction rate constant of 9.71 × 102 M-1 s-1.
Collapse
Affiliation(s)
- Sean T McBeath
- Department of Civil & Environmental Engineering, Imperial College London, London SW7 2AZ, UK.
| | - Nigel J D Graham
- Department of Civil & Environmental Engineering, Imperial College London, London SW7 2AZ, UK
| |
Collapse
|
7
|
Clematis D, Panizza M. Solid polymer electrolyte as an alternative approach for the electrochemical removal of herbicide from groundwater. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138127] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
8
|
McBeath ST, Graham NJ. In-situ electrochemical generation of permanganate for the treatment of atrazine. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.118252] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
|
9
|
Wei F, Liao D, Lin Y, Hu C, Ju J, Chen Y, Feng D. Electrochemical degradation of reverse osmosis concentrate (ROC) using the electrodeposited Ti/TiO2-NTs/PbO2 electrode. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.118056] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
10
|
Kiendrebeogo M, Karimi Estahbanati MR, Khosravanipour Mostafazadeh A, Drogui P, Tyagi RD. Treatment of microplastics in water by anodic oxidation: A case study for polystyrene. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 269:116168. [PMID: 33333450 DOI: 10.1016/j.envpol.2020.116168] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 11/23/2020] [Accepted: 11/25/2020] [Indexed: 06/12/2023]
Abstract
Water pollution by microplastics (MPs) is a contemporary issue which has recently gained lots of attentions. Despite this, very limited studies were conducted on the degradation of MPs. In this paper, we reported the treatment of synthetic mono-dispersed suspension of MPs by using electrooxidation (EO) process. MPs synthetic solution was prepared with distilled water and a commercial polystyrene solution containing a surfactant. In addition to anode material, different operating parameters were investigated such as current intensity, anode surface, electrolyte type, electrolyte concentration, and reaction time. The obtained results revealed that the EO process can degrade 58 ± 21% of MPs in 1 h. Analysis of the operating parameters showed that the current intensity, anode material, electrolyte type, and electrolyte concentration substantially affected the MPs removal efficiency, whereas anode surface area had a negligible effect. In addition, dynamic light scattering analysis was performed to evaluate the size distribution of MPs during the degradation. The combination of dynamic light scattering, scanning electron microscopy, total organic carbon, and Fourier-transform infrared spectroscopy results suggested that the MPs did not break into smaller particles and they degrade directly into gaseous products. This work demonstrated that EO is a promising process for degradation of MPs in water without production of any wastes or by-products.
Collapse
Affiliation(s)
- Marthe Kiendrebeogo
- Institut National de la recherche scientifique (INRS) - Centre Eau Terre Environnement (ETE), 490 rue de la Couronne, Québec (QC), Canada, G1K 9A9
| | - M R Karimi Estahbanati
- Institut National de la recherche scientifique (INRS) - Centre Eau Terre Environnement (ETE), 490 rue de la Couronne, Québec (QC), Canada, G1K 9A9
| | - Ali Khosravanipour Mostafazadeh
- Institut National de la recherche scientifique (INRS) - Centre Eau Terre Environnement (ETE), 490 rue de la Couronne, Québec (QC), Canada, G1K 9A9
| | - Patrick Drogui
- Institut National de la recherche scientifique (INRS) - Centre Eau Terre Environnement (ETE), 490 rue de la Couronne, Québec (QC), Canada, G1K 9A9.
| | - R D Tyagi
- Institut National de la recherche scientifique (INRS) - Centre Eau Terre Environnement (ETE), 490 rue de la Couronne, Québec (QC), Canada, G1K 9A9
| |
Collapse
|
11
|
Liu Y, Sun T, Su Q, Tang Y, Xu X, Akram M, Jiang B. Highly efficient and mild electrochemical degradation of bentazon by nano-diamond doped PbO2 anode with reduced Ti nanotube as the interlayer. J Colloid Interface Sci 2020; 575:254-264. [DOI: 10.1016/j.jcis.2020.04.092] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 03/29/2020] [Accepted: 04/22/2020] [Indexed: 12/19/2022]
|
12
|
Moteshaker PM, Rokni SE, Farnoodian N, Mohassel Akhlaghi N, Saadi S, Ahmadidoust G, Yousefi A. Application of response surface methodology for optimization of electrochemical process in metronidazole (MNZ) removal from aqueous solutions using stainless steel 316 (SS316) and lead (Pb) anodes. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING 2020. [DOI: 10.1515/ijcre-2020-0055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractPharmaceutical compounds in drinking water sources, in addition to threatening environmental health, increase bacterial resistance in aquatic environments. The purpose of this study was to investigate the application of response surface methodology for the optimization of the electrochemical process in the removal of metronidazole (MNZ) aqueous solutions using stainless steel 316 (SS316) and Lead (Pb) anodes. In this experimental study, the effect of different parameters including pH (4–10), electrolysis time (40–120 min), MNZ antibiotic concentration (30–150 mg/L), and current density (2–10 mA/cm2) on Antibiotic removal efficiency was evaluated by a central composite design method using Design-Expert software. Data were analyzed using ANOVA and p-Value tests. Hence, central composite design (CCD) established a reduced quadratic polynomial model with P-value < 0.0001 and R2 = 0.98. The optimal values for the solution pH initial, electrolysis time, current density, and MNZ antibiotic concentration were 5.5, 100.0 min, 8.0 mA/cm2, and 50 mg/L, respectively. By employing the optimum conditions obtained, the maximum experimental removal efficiencies by SS316 and Pb anodes were 67.85 and 78.66%, respectively. The Chemical Oxygen Demand/total organic carbon (COD/TOC) ratio was decreased from 1.67 at the inlet to 1.53 at the outlet for SS316 and from 1.7 to 1.42 for Pb. Moreover, average oxidation state (AOS) was increased from 1.45 to 1.7 for SS316 and from 1.45 to 1.86 for Pb, which indicates the biodegradability of MNZ antibiotics by the electrochemical process. The electrochemical degradation process was identified as an effective method for the removal of MNZ from aquatic solutions, and it has an outstanding potential in removing other refractory pollutants from the environment.
Collapse
Affiliation(s)
| | - Seyed Ehsan Rokni
- Department of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Narges Farnoodian
- Department of Environment and Energy, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | | | - Sommayeh Saadi
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Ghobad Ahmadidoust
- Department of Environmental Health Engineering, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Arman Yousefi
- Department of Microbiology, Faculty of Basic Sciences, Islamic Azad University Bonab, Bonab, Iran
| |
Collapse
|
13
|
Pellenz L, Borba FH, Daroit DJ, Lassen MFM, Baroni S, Zorzo CF, Guimarães RE, Espinoza-Quiñones FR, Seibert D. Landfill leachate treatment by a boron-doped diamond-based photo-electro-Fenton system integrated with biological oxidation: A toxicity, genotoxicity and by products assessment. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 264:110473. [PMID: 32250900 DOI: 10.1016/j.jenvman.2020.110473] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 02/25/2020] [Accepted: 03/21/2020] [Indexed: 05/21/2023]
Abstract
A photo-electro-Fenton (PEF) reactor employing boron-doped diamond (BDD) and soft iron anodes was studied in landfill leachate (LL) treatment. The reactor operation parameters (ROP) H2O2 concentration, current intensity and flow rate were investigated in the removal of Abs 254 nm. The PEF process with BDD anode, operating at the best operational conditions, was used as a pre-treatment and enabled biological oxidation (BO). The treatment strategy of PEF followed by BO showed to be the most efficient, reaching reductions of 77.9% chemical oxygen demand (COD), 71.5% total carbon (TC) and 76.3% radiation absorbance in 254 nm (Abs 254 nm), as well as a significant reduction in the genotoxicity (Allium cepa), observed by an increase in the mitotic index (MI) (131.5%) and decrease in the abnormalities (47.8%). The reduction of the toxic potential of LL using the integration of processes was also observed in the gas chromatography-mass spectrometry (GC-MS) byproducts analysis, which indicated the removal of emerging contaminants, such as Bisphenol-A (BPA), N,N-Diethyl-3-methylbenzamide (DEET) and Diisooctyl phthalate (DIOP). Thus, the PEF process integrated with BO presented a considerable efficiency in the removal of contaminants present in LL, becoming an alternative for the minimization of the environmental impacts caused by the discharge of this effluent in the environment.
Collapse
Affiliation(s)
- Leandro Pellenz
- Postgraduate Program of Environment and Sustainable Technologies, Federal University of Fronteira Sul, Av. Jacob Reinaldo Haupenthal, 1580, 97900-000, Cerro Largo, RS, Brazil.
| | - Fernando Henrique Borba
- Postgraduate Program of Environment and Sustainable Technologies, Federal University of Fronteira Sul, Av. Jacob Reinaldo Haupenthal, 1580, 97900-000, Cerro Largo, RS, Brazil
| | - Daniel Joner Daroit
- Postgraduate Program of Environment and Sustainable Technologies, Federal University of Fronteira Sul, Av. Jacob Reinaldo Haupenthal, 1580, 97900-000, Cerro Largo, RS, Brazil
| | - Manoel Francisco Mendes Lassen
- Postgraduate Program of Environment and Sustainable Technologies, Federal University of Fronteira Sul, Av. Jacob Reinaldo Haupenthal, 1580, 97900-000, Cerro Largo, RS, Brazil
| | - Suzymeire Baroni
- Postgraduate Program of Environment and Sustainable Technologies, Federal University of Fronteira Sul, Av. Jacob Reinaldo Haupenthal, 1580, 97900-000, Cerro Largo, RS, Brazil
| | - Camila Fernanda Zorzo
- Postgraduate Program of Environment and Sustainable Technologies, Federal University of Fronteira Sul, Av. Jacob Reinaldo Haupenthal, 1580, 97900-000, Cerro Largo, RS, Brazil
| | - Raíssa Engroff Guimarães
- Postgraduate Program of Environment and Sustainable Technologies, Federal University of Fronteira Sul, Av. Jacob Reinaldo Haupenthal, 1580, 97900-000, Cerro Largo, RS, Brazil
| | - Fernando Rodolfo Espinoza-Quiñones
- Postgraduate Program of Chemical Engineering, West Paraná State University, Rua da Faculdade 645, Jd. Santa Maria, 85903-000, Toledo, PR, Brazil
| | - Daiana Seibert
- Postgraduate Program of Chemical Engineering, State University of Maringa, UEM, Av. Colombo, 5790, Maringa, Parana, CEP: 87020-900, Brazil
| |
Collapse
|
14
|
Saadi S, Moteshaker PM, Rokni SE, Ahmadidoust G, Farnoodian N, Yousefi A. The electrochemical degradation of the metronidazole (MNZ) antibiotic using electrochemical oxidation on a stainless steel316 coated with beta lead oxide (SS316/β-PbO2) anode. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING 2020. [DOI: 10.1515/ijcre-2019-0226] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractMetronidazole (MNZ) is one of the pharmaceutical products which is considered as one of the most important pollutants in the environment due to its wide use and resistance to biodegradation. Hence, the purpose of this study is the optimization of the electrochemical degradation of the metronidazole (MNZ) antibiotic using electrochemical oxidation on a stainless steel316 coated with beta lead oxide (SS316/β-PbO2) anode. In the studied electrochemical process, the response surface methodology (RSM) involving a five-level ((pH (A) and electrolysis time (B), current density (C), and MNZ concentration (D)). The central composite design (CCD) was employed for optimizing and modeling of the electrochemical process in the degradation of MNZ. The preparation of SS316/β-PbO2 anode was accomplished using the electro-deposition method. Scanning electron microscope (SEM), energy-dispersive X-ray (EDX), and X-ray diffraction (XRD) analyses were conducted for accurate evaluation and characterization of the coated electrode. The effect of influencing factors on electrochemical degradation of MNZ was studied, and the highest MNZ degradation efficiency was observed to be 98.88% after 120 min under the optimal conditions including the supporting electrolyte concentration of 1.0 g/100 cc, the initial MNZ concentration of 30.1 mg/L, pH of 4 and the current density of 9.99 mA/cm2. The linear regression coefficient (R2) between experiments and different response values in the model was 0.99. Moreover, the statistical analysis of the results indicated that in the range studied, the most effective parameters in MNZ degradation are MNZ concentration and pH. In general, it can be concluded that the electrochemical process using SS316/β-PbO2 anode can effectively eliminate metronidazole, and it can be considered as an efficient method in the degradation of various pollutants.
Collapse
Affiliation(s)
- Sommayeh Saadi
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Islamic Republic of Iran
| | - Parisa Mahmoudpoor Moteshaker
- Department of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Islamic Republic of Iran
| | - Seyed Ehsan Rokni
- Department of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Islamic Republic of Iran
| | - Ghobad Ahmadidoust
- Department of Environmental Health Engineering, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Islamic Republic of Iran
| | - Narges Farnoodian
- Department of Environment and Energy, Science and Research Branch, Islamic Azad University, Tehran, Islamic Republic of Iran
| | - Arman Yousefi
- Department of Microbiology, Faculty of Basic Sciences, Islamic Azad University Bonab, Bonab, Islamic Republic of Iran
| |
Collapse
|
15
|
Tan X, Ma L, Han P, Wei H, Wei Q, Sun C. Fabrication of boron-doped diamond films electrode for efficient electrocatalytic degradation of cresols. CHEMOSPHERE 2020; 246:125786. [PMID: 31918097 DOI: 10.1016/j.chemosphere.2019.125786] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 12/27/2019] [Accepted: 12/28/2019] [Indexed: 06/10/2023]
Abstract
The choice of anode materials has a significant influence on the electrocatalytic degradation of organics. Accordingly, the electrocatalytic activity of several active anodes (Ti/Ru-Ir, Ti/Ir-Ta, Ti/Pt) and non-active anodes (Ti/PbO2, Ti/SnO2, Si/BDD (boron-doped diamond)) was compared by electrocatalytic degradation of m-cresol. The results indicated Si/BDD electrode had the strongest mineralization ability and the lowest energy consumption. And the order of the activity of m-cresol degradation was as follows: Si/BDD > Ti/SnO2>Ti/PbO2>Ti/Pt > Ti/Ir-Ta > Ti/Ru-Ir. Also their intermediate products were compared. The effects of experimental parameters on electrocatalytic degradation of m-cresol with Si/BDD electrode showed m-cresol conversion was affected slightly by the electrode spacing and electrolyte concentration, but affected greatly by the temperature and current density. And smaller electrode spacing and current density, higher electrolyte concentration and temperature were beneficial to reduce energy consumption. Their degradation processes were all accord with the pseudo-first-order reaction kinetics completely. In addition, the results of electrocatalytic degradation of m, o, p-cresol indicated there was almost no significant difference on conversion rate between cresols isomers with the current density of 30 mA cm-2. However, the influence of group position was shown when the current density was reduced to 10 mA cm-2 and cresols conversion followed the sequence of m-cresol ≈ o-cresol > p-cresol.
Collapse
Affiliation(s)
- Xiangdong Tan
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Lei Ma
- Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology, College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing, 102617, PR China
| | - Peiwei Han
- Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology, College of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing, 102617, PR China
| | - Huangzhao Wei
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, PR China
| | - Qiuping Wei
- State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University, Changsha, 410083, PR China.
| | - Chenglin Sun
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, PR China.
| |
Collapse
|
16
|
Chen D, Xiong F, Zhang H, Ma C, Cao L, Yang J. Dimensional Stable Lead Electrode Modified by SDS for Efficient Degradation of Bisphenol A. ACS OMEGA 2020; 5:1198-1205. [PMID: 31984277 PMCID: PMC6977255 DOI: 10.1021/acsomega.9b03571] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Accepted: 12/24/2019] [Indexed: 06/10/2023]
Abstract
The dimensional stable lead electrodes modified by sodium dodecyl sulfate (SDS) were prepared with electrochemical deposition and it shows that a more compact, uniform, and smooth film of Ti/PbO2(F+SDS) electrode reduces the corroded crystal faces and surface defects. Characterization results demonstrate that the oxygen evolution potential (OEP) of the Ti/PbO2(F+SDS) electrode was higher, and its service life is almost 1.6 times longer than the Ti/PbO2(F) electrode. Compared with Ti/PbO2(F) electrode, the soluble Pb concentration of the Ti/PbO2(F+SDS) electrode decreased 15.1%, which indicates that the decrease of crystal surface defects leads to the reduction of Pb ions so that the excellent corrosion resistance electrodes cause low environmental risks. The modified electrodes were used as anodes to degrading bisphenol A (BPA) when an electrolyte is 0.2 M Na2SO4, the applied voltage is 5 V and electrodes distance is 3 cm, 20 mg/L BPA for electrolysis time of 180 min can reach up to 97.6%.
Collapse
|
17
|
Abstract
The electrochemical oxidation of the Rhodamine B dye (Rh-B) was carried out using dimensionally stable type anode (DSA, Ti/Ru0.3Ti0.7O2). The work was performed using the electrochemical flow cell system. The effect of several operating factors, such as supporting electrolytes, current density, electrolysis time, temperature, and initial concentration of Rh-B dye, were investigated. The UV-visible spectroscopy and chemical oxygen demand (COD) measurements were conducted to monitor the removal and degradation of Rh-B. The best color removal achieved was found to be 98.3% after 10 min applying 3.9 mA·cm−2 as a current density using 0.07 mol·L−1 of NaCl. Meanwhile, the highest COD removal rate (93.0%) was obtained for an applied current density of 3.9 mA·cm−2 as the optimal operating condition after 180 min reaction time, with 2.98 kW h·m−3 as energy consumption. This shows that the best conditions for color removal are not certainly the same as those for the COD removal. The rises in the concentration of NaCl, and applied current increased the Rh-B color removal rate. The decline in Rh-B dye concentration followed pseudo-first-order kinetics. The obtained values of apparent rate constant were increased by increasing chloride ion concentration. It is concluded that the electro-oxidation on DSA electrode using a flow cell is a suitable process for the removal of Rh-B dye in aqueous solutions.
Collapse
|
18
|
Paired electro-oxidation of insecticide imidacloprid and electrodenitrification in simulated and real water matrices. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.05.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
19
|
Pei S, Shen C, Zhang C, Ren N, You S. Characterization of the Interfacial Joule Heating Effect in the Electrochemical Advanced Oxidation Process. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:4406-4415. [PMID: 30884230 DOI: 10.1021/acs.est.8b06773] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The electrochemical advanced oxidation process (EAOP) has gained popularity in the field of water purification. During the EAOP, it is in the boundary layer of the anode-solution interface that organic pollutants are oxidized by hydroxyl radicals (•OH) produced from water oxidation. Applying current to an anode dissipates heat to the surroundings according to Joule's law, leading to an interfacial temperature that is much higher than that of the bulk solution, which is known as the "interfacial Joule heating" (IJH) effect. The modeling and experimental results show that the IJH effect had an inevitable consequence for the activity of •OH, rate constants, and mass transport within the boundary layer. The interfacial temperature could be increased from 25 to 70.2 °C, a value mostly doubling that of the bulk solution (33.6 °C) at the end of a 120 min electrolysis (10 mA cm-2). Correspondingly, the •OH concentration available for oxidation of organic pollutants was much lower than that calculated at a constant temperature of 25 °C probably due to H2O2 formation via •OH dimerization. The enhanced •OH diffusion resulting from strengthened molecular thermodynamic movement and decreased kinematic viscosity of the solution also drove •OH to move far from the anode surface and thus extended the maximum thickness of the boundary layer. The oxidation rate was positively correlated to the interfacial temperature, the activation energy, and the number of activated molecules, indicated by a 1.57-2.28-fold increase depending on the target organic compounds. The finding of the IJH effect prompts a re-examination of the literature based on a realistic rather than a constant temperature (e.g., 20-30 °C), the case reflected in a number of prior studies that does not exist virtually, and reconsideration of behaviors that can be attributed to the change in temperature during EAOP.
Collapse
Affiliation(s)
- Shuzhao Pei
- State Key Laboratory of Urban Water Resource and Environment, School of Environment , Harbin Institute of Technology , Harbin 150090 , P. R. China
| | - Chao Shen
- Key Laboratory of Cold Region Urban and Rural Human Settlement Environment Science and Technology, School of Architecture , Harbin Institute of Technology , Harbin 150006 , P. R. China
| | - Chenghu Zhang
- Key Laboratory of Cold Region Urban and Rural Human Settlement Environment Science and Technology, School of Architecture , Harbin Institute of Technology , Harbin 150006 , P. R. China
| | - Nanqi Ren
- State Key Laboratory of Urban Water Resource and Environment, School of Environment , Harbin Institute of Technology , Harbin 150090 , P. R. China
| | - Shijie You
- State Key Laboratory of Urban Water Resource and Environment, School of Environment , Harbin Institute of Technology , Harbin 150090 , P. R. China
| |
Collapse
|
20
|
Synergy of combined adsorption and electrochemical degradation of aqueous organics by granular activated carbon particulate electrodes. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.05.023] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
21
|
Mu Y, Huang C, Li H, Chen L, Zhang D, Yang Z. Electrochemical degradation of ciprofloxacin with a Sb-doped SnO2 electrode: performance, influencing factors and degradation pathways. RSC Adv 2019; 9:29796-29804. [PMID: 35531541 PMCID: PMC9071943 DOI: 10.1039/c9ra04860j] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 09/04/2019] [Indexed: 11/21/2022] Open
Abstract
Sb-doped SnO2 electrodes were prepared with the practical sol–gel method and were used for the electrocatalytic degradation of ciprofloxacin (CIP) in aqueous solution. Results from the electrochemical characterization (including cyclic voltammetry, linear sweep voltammetry, and electrochemical impedance spectroscopy) showed that the electrode with 16 coating times (SSO-16) had the highest oxygen evolution potential of 2.2 V (vs. SCE) and the highest electrochemically active area of 3.74 cm2. The results of scanning electron microscopy and X-ray diffraction showed that the coating times could affect the surface morphology and crystal structure of the electrodes, and the SSO-16 electrode had a denser surface, higher crystallinity, and smaller grain size (28.6 nm). Moreover, the experimental parameters for CIP degradation with SSO-16 were optimized, and the removal ratio of CIP reached to almost 100% within 60 min. In addition, the possible degradation pathways of CIP were proposed. And the stability and reusability of the SSO-16 electrode were also studied. These results are valuable for the preparation of high electrocatalytic performance electrodes by a sol–gel coating method for electrochemical degradation of antibiotics. Sb-doped SnO2 electrodes with different coating times were prepared by an optimum sol–gel method and the application on the electrocatalytic degradation of ciprofloxacin in aqueous solution were investigated.![]()
Collapse
Affiliation(s)
- Yanguang Mu
- Center for Environment and Water Resources
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- PR China
| | - Cong Huang
- Center for Environment and Water Resources
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- PR China
| | - Haipu Li
- Center for Environment and Water Resources
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- PR China
| | - Leilei Chen
- Center for Environment and Water Resources
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- PR China
| | - Ding Zhang
- Center for Environment and Water Resources
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- PR China
| | - Zhaoguang Yang
- Center for Environment and Water Resources
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- PR China
| |
Collapse
|
22
|
Durán FE, de Araújo DM, do Nascimento Brito C, Santos EV, Ganiyu SO, Martínez-Huitle CA. Electrochemical technology for the treatment of real washing machine effluent at pre-pilot plant scale by using active and non-active anodes. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2018.04.029] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
|
23
|
Ouarda Y, Tiwari B, Azaïs A, Vaudreuil MA, Ndiaye SD, Drogui P, Tyagi RD, Sauvé S, Desrosiers M, Buelna G, Dubé R. Synthetic hospital wastewater treatment by coupling submerged membrane bioreactor and electrochemical advanced oxidation process: Kinetic study and toxicity assessment. CHEMOSPHERE 2018; 193:160-169. [PMID: 29131974 DOI: 10.1016/j.chemosphere.2017.11.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 11/02/2017] [Accepted: 11/03/2017] [Indexed: 06/07/2023]
Abstract
In this work, the combination of membrane bioreactor (MBR) and electro-oxidation (EO) process was studied for the treatment of a synthetic hospital wastewater fortified with four pharmaceutical pollutants namely carbamazepine (CBZ), ibuprofen (IBU), estradiol (E-E) at a concentration of 10 μg L-1 venlafaxine (VEN) at 0.2 μg L-1. Two treatment configurations were studied: EO process as pre-treatment and post-treatment. Wastewater treatment with MBR alone shows high removal percentages of IBU and E-E (∼90%). Unlikely for CBZ and VEN, a low elimination percentage (∼10%) was observed. The hydraulic and the solid retention times (HRT and SRT) were 18 h and 140 d respectively, while the biomass concentration in the MBR was 16.5 g L-1. To enhance pharmaceuticals elimination, an EO pretreatment was conducted during 40 min at 2 A. This configuration allowed a 92% removal for VEN, which was far greater than both treatments alone, with lower than 30% and 50% for MBR and EO, respectively. The MBR-EO coupling (EO as post-treatment) allows high removal percentages (∼97%) of the four pharmaceutical pollutants after 40 min of treatment at a current intensity of 0.5 A with Nb/BDD as electrodes. This configuration appears to be very effective compared to the first configuration (EO-MBR) where EO process is used as a pre-treatment. Toxicity assessment showed that the treated effluent of this configuration is not toxic to Daphnia magna except at 100% v/v. The MBR-EO coupling appears to be a promising treatment for contaminated hospital effluents.
Collapse
Affiliation(s)
- Yassine Ouarda
- Institut National de La Recherche Scientifique (INRS), 490 rue de La Couronne, Québec City, QC, G1K 9A9, Canada
| | - Bhagyashree Tiwari
- Institut National de La Recherche Scientifique (INRS), 490 rue de La Couronne, Québec City, QC, G1K 9A9, Canada
| | - Antonin Azaïs
- Institut National de La Recherche Scientifique (INRS), 490 rue de La Couronne, Québec City, QC, G1K 9A9, Canada
| | | | - Sokhna Dieng Ndiaye
- Institut National de La Recherche Scientifique (INRS), 490 rue de La Couronne, Québec City, QC, G1K 9A9, Canada; Centre d'Expertise en analyse environnementale du Québec, ministère du Développement durable, de L'Environnement, et de La Lutte contre Les changements climatiques, 2700 rue Einstein, Québec City, QC GIP 3W8, Canada
| | - Patrick Drogui
- Institut National de La Recherche Scientifique (INRS), 490 rue de La Couronne, Québec City, QC, G1K 9A9, Canada.
| | - Rajeshwhar Dayal Tyagi
- Institut National de La Recherche Scientifique (INRS), 490 rue de La Couronne, Québec City, QC, G1K 9A9, Canada
| | - Sébastien Sauvé
- Université de Montréal, 2900 Edouard Montpetit, H3C 3J7, Montréal, QC, Canada
| | - Mélanie Desrosiers
- Centre d'Expertise en analyse environnementale du Québec, ministère du Développement durable, de L'Environnement, et de La Lutte contre Les changements climatiques, 2700 rue Einstein, Québec City, QC GIP 3W8, Canada
| | - Gerardo Buelna
- Centre de Recherche Industrielle du Québec (CRIQ), 333 Franquet, Québec City, QC, G1P 4C7, Canada
| | - Rino Dubé
- Centre de Recherche Industrielle du Québec (CRIQ), 333 Franquet, Québec City, QC, G1P 4C7, Canada
| |
Collapse
|
24
|
Liu S, Wang Y, Zhou X, Han W, Li J, Sun X, Shen J, Wang L. Improved degradation of the aqueous flutriafol using a nanostructure macroporous PbO2 as reactive electrochemical membrane. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.09.055] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
25
|
Pérez JF, Llanos J, Sáez C, López C, Cañizares P, Rodrigo MA. Treatment of real effluents from the pharmaceutical industry: A comparison between Fenton oxidation and conductive-diamond electro-oxidation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2017; 195:216-223. [PMID: 27530074 DOI: 10.1016/j.jenvman.2016.08.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Revised: 07/15/2016] [Accepted: 08/06/2016] [Indexed: 06/06/2023]
Abstract
Wastewater produced in pharmaceutical manufacturing plants (PMPs), especially the one coming from organic-synthesis facilities, is characterized by its large variability due to the wide range of solvents and chemical reagents used in the different stages of the production of medicines. Normally, the toxicity of the organic compounds prevent the utilization of biological processes and more powerful treatments are needed becoming advanced oxidation processes (AOPs) a valid alternative. In this work, the efficiency in abatement of pollution by Fenton oxidation (FO) and conductive-diamond electro-oxidation (CDEO) are compared in the treatment of 60 real effluents coming from different processes carried out in a pharmaceutical facility, using standardized tests. In 80% of the samples, CDEO was found to be more efficient than FO and in the remaining 20%, coagulation was found to exhibit a great significance in the COD abatement mechanism during FO, pointing out the effectiveness of the oxidation promoted by the electrochemical technology. Mean oxidation state of carbon was found to be a relevant parameter to understand the behavior of the oxidation technologies. It varied inversely proportional to efficiency in FO and it showed practically no influence in the case of CDEO.
Collapse
Affiliation(s)
- J F Pérez
- Chemical Engineering Department, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Campus Universitario s/n, 13005 Ciudad Real, Spain
| | - J Llanos
- Chemical Engineering Department, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Campus Universitario s/n, 13005 Ciudad Real, Spain
| | - C Sáez
- Chemical Engineering Department, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Campus Universitario s/n, 13005 Ciudad Real, Spain.
| | - C López
- Chemical Engineering Department, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Campus Universitario s/n, 13005 Ciudad Real, Spain
| | - P Cañizares
- Chemical Engineering Department, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Campus Universitario s/n, 13005 Ciudad Real, Spain
| | - M A Rodrigo
- Chemical Engineering Department, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Campus Universitario s/n, 13005 Ciudad Real, Spain
| |
Collapse
|
26
|
Photoelectrocatalytic activity of an ordered and vertically aligned TiO 2 nanorod array/BDD heterojunction electrode. Sci Bull (Beijing) 2017; 62:619-625. [PMID: 36659302 DOI: 10.1016/j.scib.2017.03.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 03/03/2017] [Accepted: 03/06/2017] [Indexed: 01/21/2023]
Abstract
Rutile TiO2 nanorod (TiNR) arrays were fabricated on a boron-doped diamond (BDD) substrate by a simple hydrothermal synthesis method. A fluorine-doped tin oxide (FTO) electrode grown with TiNR arrays was also prepared using the same technology for comparison. Field-emission scanning electron microscopy results show that oriented TiNR arrays can grow vertically on the surface of BDD and FTO electrodes. TiNR arrays grown on both electrodes had the same length (3μm). In comparison with the TiNR/FTO electrode, the TiNR/BDD electrode demonstrated a higher photoelectrocatalytic activity for the degradation of water and organic compounds, which is mostly attributed to the formation of a p-n heterojunction between the TiNR arrays and BDD at high potential, apart from the density of TiNR. A linear relationship between the photoelectrocatalytic current and the organic concentration can be observed on both electrodes. However, the linear range between net photoelectrocatalytic current values and organic compound concentrations for the TiNR/BDD electrode are much greater than those for the TiNR/FTO electrode, which makes the TiNR/BDD electrode a versatile material for the photocatalytic degradation and sensing of organic compounds.
Collapse
|
27
|
Direct and indirect electrochemical oxidation of Indigo Carmine using PbO2 and TiRuSnO2. J Solid State Electrochem 2017. [DOI: 10.1007/s10008-017-3559-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
28
|
Saaidia S, Delimi R, Benredjem Z, Mehellou A, Djemel A, Barbari K. Use of a PbO2 electrode of a lead-acid battery for the electrochemical degradation of methylene blue. SEP SCI TECHNOL 2017. [DOI: 10.1080/01496395.2017.1291681] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
29
|
Clematis D, Cerisola G, Panizza M. Electrochemical oxidation of a synthetic dye using a BDD anode with a solid polymer electrolyte. Electrochem commun 2017. [DOI: 10.1016/j.elecom.2016.12.008] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
|
30
|
Souza F, Quijorna S, Lanza M, Sáez C, Cañizares P, Rodrigo M. Applicability of electrochemical oxidation using diamond anodes to the treatment of a sulfonylurea herbicide. Catal Today 2017. [DOI: 10.1016/j.cattod.2016.04.030] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
31
|
Comparison of the electrooxidation performance of three-dimensional RVC/PbO2 and boron-doped diamond electrodes. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2016.12.025] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
32
|
Olvera-Vargas H, Cocerva T, Oturan N, Buisson D, Oturan MA. Bioelectro-Fenton: A sustainable integrated process for removal of organic pollutants from water: Application to mineralization of metoprolol. JOURNAL OF HAZARDOUS MATERIALS 2016; 319:13-23. [PMID: 26707983 DOI: 10.1016/j.jhazmat.2015.12.010] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Revised: 12/01/2015] [Accepted: 12/07/2015] [Indexed: 06/05/2023]
Abstract
The relevant environmental hazard related to the presence of pharmaceuticals in water sources requires the development of high effective and suitable wastewater treatment technologies. In the present work, a hybrid process coupling electro-Fenton (EF) process and aerobic biological treatment (Bio-EF process) was implemented for the efficient and cost-effective mineralization of beta-blocker metoprolol (MPTL) aqueous solutions. Firstly, operating factors influencing EF process were assessed. MTPL solutions were completely mineralized after 4h-electrolysis under optimal operating conditions and BDD anode demonstrated its oxidation superiority. The absolute rate constant of MTPL oxidation byOH (kMTPL) was determined by the competition kinetics method and found to be (1.72±0.04)×10(9)M(-1)s(-1). A reaction pathway for the mineralization of the drug was proposed based on the identification of oxidation by-products. Secondly, EF process was used as pre-treatment. An increase of BOD5/COD ratio from 0.012 to 0.44 was obtained after 1h EF treatment, along with 47% TOC removal and a significant decrease of toxicity, demonstrating the feasibility of a post-biological treatment. Finally, biological treatment successfully oxidized 43% of the total TOC content. An overall 90% mineralization of MPTL solutions was achieved by the Bio-EF process, demonstrating its potentiality for treating wastewater containing pharmaceutical residues.
Collapse
Affiliation(s)
- Hugo Olvera-Vargas
- Université Paris-Est, Laboratoire Géomatériaux et Environnement (LGE), EA 4508, UPE, 77454, Marne-la-Vallée, France
| | - Tatiana Cocerva
- Université Paris-Est, Laboratoire Géomatériaux et Environnement (LGE), EA 4508, UPE, 77454, Marne-la-Vallée, France
| | - Nihal Oturan
- Université Paris-Est, Laboratoire Géomatériaux et Environnement (LGE), EA 4508, UPE, 77454, Marne-la-Vallée, France
| | - Didier Buisson
- Muséum National d'Histoire Naturelle, 63 rue Buffon, 75005 Paris, Cedex 05, France
| | - Mehmet A Oturan
- Université Paris-Est, Laboratoire Géomatériaux et Environnement (LGE), EA 4508, UPE, 77454, Marne-la-Vallée, France.
| |
Collapse
|
33
|
Saad MEK, Rabaaoui N, Elaloui E, Moussaoui Y. Mineralization of p-methylphenol in aqueous medium by anodic oxidation with a boron-doped diamond electrode. Sep Purif Technol 2016. [DOI: 10.1016/j.seppur.2016.07.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
34
|
|
35
|
Electrochemical oxidation metronidazole with Co modified PbO2 electrode: Degradation and mechanism. Sep Purif Technol 2016. [DOI: 10.1016/j.seppur.2016.04.028] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
36
|
Effect of RVC porosity on the performance of PbO2 composite coatings with titanate nanotubes for the electrochemical oxidation of azo dyes. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.04.054] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
37
|
Dos Santos EV, Sáez C, Martínez-Huitle CA, Cañizares P, Rodrigo MA. Removal of oxyfluorfen from ex-situ soil washing fluids using electrolysis with diamond anodes. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2016; 171:260-266. [PMID: 26846982 DOI: 10.1016/j.jenvman.2016.01.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2015] [Revised: 12/29/2015] [Accepted: 01/21/2016] [Indexed: 06/05/2023]
Abstract
In this research, firstly, the treatment of soil spiked with oxyfluorfen was studied using a surfactant-aided soil-washing (SASW) process. After that, the electrochemical treatment of the washing liquid using boron doped diamond (BDD) anodes was performed. Results clearly demonstrate that SASW is a very efficient approach in the treatment of soil, removing the pesticide completely by using dosages below 5 g of sodium dodecyl sulfate (SDS) per Kg of soil. After that, complete mineralization of organic matter (oxyflourfen, SDS and by-products) was attained (100% of total organic carbon and chemical oxygen demand removals) when the washing liquids were electrolyzed using BDD anodes, but the removal rate depends on the size of the particles in solution. Electrolysis of soil washing fluids occurs via the reduction in size of micelles until their complete depletion. Lower concentrations of intermediates are produced (sulfate, chlorine, 4-(trifluoromethyl)-phenol and ortho-nitrophenol) during BDD-electrolyzes. Finally, it is important to indicate that, sulfate (coming from SDS) and chlorine (coming from oxyfluorfen) ions play an important role during the electrochemical organic matter removal.
Collapse
Affiliation(s)
- Elisama Vieira Dos Santos
- Institute of Chemistry, Federal University of Rio Grande do Norte, Lagoa Nova CEP 59078-970, Natal, RN, Brazil
| | - Cristina Sáez
- Department of Chemical Engineering, Universidad de Castilla - La Mancha, Enrique Costa Building, Campus Universitario s/n, 13071, Ciudad Real, Spain
| | | | - Pablo Cañizares
- Department of Chemical Engineering, Universidad de Castilla - La Mancha, Enrique Costa Building, Campus Universitario s/n, 13071, Ciudad Real, Spain
| | - Manuel Andres Rodrigo
- Department of Chemical Engineering, Universidad de Castilla - La Mancha, Enrique Costa Building, Campus Universitario s/n, 13071, Ciudad Real, Spain
| |
Collapse
|
38
|
Ellouze S, Panizza M, Barbucci A, Cerisola G, Mhiri T, Elaoud SC. Ferulic acid treatment by electrochemical oxidation using a BDD anode. J Taiwan Inst Chem Eng 2016. [DOI: 10.1016/j.jtice.2015.09.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
39
|
Abstract
The degradation of aqueous solutions containing phenolphthalein was carried out using ozone and electrochemical processes; the two different treatments were performed for 60 min at pH 3, pH 7, and pH 9. The electrochemical oxidation using boron-doped diamond electrodes processes was carried out using three current density values: 3.11 mA·cm−2, 6.22 mA·cm−2, and 9.33 mA·cm−2, whereas the ozone dose was constantly supplied at 5±0.5 mgL−1. An optimal degradation condition for the ozonation treatment is at alkaline pH, while the electrochemical treatment works better at acidic pH. The electrochemical process is twice better compared with ozonation.
Collapse
|
40
|
Dai Q, Xia Y, Chen J. Mechanism of enhanced electrochemical degradation of highly concentrated aspirin wastewater using a rare earth La-Y co-doped PbO 2 electrode. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2015.10.120] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
41
|
Martínez-Huitle CA, Rodrigo MA, Sirés I, Scialdone O. Single and Coupled Electrochemical Processes and Reactors for the Abatement of Organic Water Pollutants: A Critical Review. Chem Rev 2015; 115:13362-407. [PMID: 26654466 DOI: 10.1021/acs.chemrev.5b00361] [Citation(s) in RCA: 761] [Impact Index Per Article: 84.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Traditional physicochemical and biological techniques, as well as advanced oxidation processes (AOPs), are often inadequate, ineffective, or expensive for industrial water reclamation. Within this context, the electrochemical technologies have found a niche where they can become dominant in the near future, especially for the abatement of biorefractory substances. In this critical review, some of the most promising electrochemical tools for the treatment of wastewater contaminated by organic pollutants are discussed in detail with the following goals: (1) to present the fundamental aspects of the selected processes; (2) to discuss the effect of both the main operating parameters and the reactor design on their performance; (3) to critically evaluate their advantages and disadvantages; and (4) to forecast the prospect of their utilization on an applicable scale by identifying the key points to be further investigated. The review is focused on the direct electrochemical oxidation, the indirect electrochemical oxidation mediated by electrogenerated active chlorine, and the coupling between anodic and cathodic processes. The last part of the review is devoted to the critical assessment of the reactors that can be used to put these technologies into practice.
Collapse
Affiliation(s)
- Carlos A Martínez-Huitle
- Instituto de Química, Campus Universitário, Universidade Federal do Rio Grande do Norte , Av. Salgado Filho 3000 Campus Universitário Lagoa-Nova CEP 59078-970 Natal, RN, Brazil
| | - Manuel A Rodrigo
- Department of Chemical Engineering, Faculty of Chemical Sciences & Technologies, Ciudad Real, Universidad de Castilla-La Mancha , Ciudad Real 13071, Spain
| | - Ignasi Sirés
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Departament de Química Física, Facultat de Química, Universitat de Barcelona , Martí i Franquès 1-11, 08028 Barcelona, Spain
| | - Onofrio Scialdone
- Dipartimento di Ingegneria Chimica, Gestionale, Informatica, Meccanica, Università degli Studi di Palermo , Palermo 90128, Italy
| |
Collapse
|
42
|
Degradation of azo dye C.I. Acid Red 18 using an eco-friendly and continuous electrochemical process. KOREAN J CHEM ENG 2015. [DOI: 10.1007/s11814-015-0175-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
43
|
Labiadh L, Oturan MA, Panizza M, Hamadi NB, Ammar S. Complete removal of AHPS synthetic dye from water using new electro-fenton oxidation catalyzed by natural pyrite as heterogeneous catalyst. JOURNAL OF HAZARDOUS MATERIALS 2015; 297:34-41. [PMID: 25935408 DOI: 10.1016/j.jhazmat.2015.04.062] [Citation(s) in RCA: 132] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2015] [Revised: 04/21/2015] [Accepted: 04/22/2015] [Indexed: 06/04/2023]
Abstract
The mineralization of a new azo dye - the (4-amino-3-hydroxy-2-p-tolylazo-naphthalene-1-sulfonic acid) (AHPS) - has been studied by a novel electrochemical advanced oxidation process (EAOP), consisting in electro-Fenton (EF) oxidation, catalyzed by pyrite as the heterogeneous catalyst - the so-called 'pyrite-EF'. This solid pyrite used as heterogeneous catalyst instead of a soluble iron salt, is the catalyst the system needs for production of hydroxyl radicals. Experiments were performed in an undivided cell equipped with a BDD anode and a commercial carbon felt cathode to electrogenerate in situ H2O2 and regenerate ferrous ions as catalyst. The effects on operating parameters, such as applied current, pyrite concentration and initial dye content, were investigated. AHPS decay and mineralization efficiencies were monitored by HPLC analyses and TOC measurements, respectively. Experimental results showed that AHPS was quickly oxidized by hydroxyl radicals (OH) produced simultaneously both on BDD surface by water discharge and in solution bulk from electrochemically assisted Fenton's reaction with a pseudo-first-order reaction. AHPS solutions with 175 mg L(-1) (100 mg L(-1) initial TOC) content were then almost completely mineralized in 8h. Moreover, the results demonstrated that, under the same conditions, AHPS degradation by pyrite electro-Fenton process was more powerful than the conventional electro-Fenton process.
Collapse
Affiliation(s)
- Lazhar Labiadh
- Département de chimie, Faculté des Sciences de Gabès, Université de Gabès, Cité Erriadh, 6072 Gabès, Tunisia
| | - Mehmet A Oturan
- Université Paris-Est Laboratoire Géomatériaux et Environnement, EA 4508, UPEM, 5 Bd Descartes, 77454 Marne-la-Vallée, Cedex 2, France.
| | - Marco Panizza
- Department of Civil, Chemical and Environmental Engineering, University of Genoa, P. le J.F. Kennedy 1, Genoa 16129 Italy
| | - Nawfel Ben Hamadi
- Département de chimie, Faculté des Sciences de Gabès, Université de Gabès, Cité Erriadh, 6072 Gabès, Tunisia; Chemistry Department, College of Science, IMSIU (Al-Imam Mohammad Ibn Saud Islamic University), Riyadh 11623, Saudi Arabia
| | - Salah Ammar
- Département de chimie, Faculté des Sciences de Gabès, Université de Gabès, Cité Erriadh, 6072 Gabès, Tunisia
| |
Collapse
|
44
|
Dbira S, Bensalah N, Cañizares P, Rodrigo MA, Bedoui A. The electrolytic treatment of synthetic urine using DSA electrodes. J Electroanal Chem (Lausanne) 2015. [DOI: 10.1016/j.jelechem.2015.02.026] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
45
|
Electrochemical degradation of chloramphenicol with a novel Al doped PbO2 electrode: Performance, kinetics and degradation mechanism. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.02.029] [Citation(s) in RCA: 153] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
46
|
Dbira S, Bensalah N, Bedoui A, Cañizares P, Rodrigo MA. Treatment of synthetic urine by electrochemical oxidation using conductive-diamond anodes. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:6176-84. [PMID: 25399531 DOI: 10.1007/s11356-014-3831-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Accepted: 11/06/2014] [Indexed: 05/11/2023]
Abstract
In this work, the electrochemical oxidation of synthetic urine by anodic oxidation using boron-doped diamond as anode and stainless steel as cathode was investigated. Results show that complete depletion of chemical oxygen demand (COD) and total organic carbon (TOC) can be attained regardless of the current density applied in the range 20-100 mA cm(-2). Oxalic and oxamic acids, and, in lower concentrations, creatol and guanidine were identified as the main intermediates. Chloride ions play a very important role as mediators and contribute not only to obtain a high efficiency in the removal of the organics but also to obtain an efficient removal of nitrogen by the transformation of the various raw nitrogen species into gaseous nitrogen through chloramine formation. The main drawback of the technology is the formation of chlorates and perchlorates as final chlorine products. The increase of current density from 20 to 60 mA cm(-2) led to an increase in the rate of COD and TOC removals although the process becomes less efficient in terms of energy consumption (removals of COD and TOC after applying 18 Ah dm(-3) were 93.94 and 94.94 %, respectively, at 20 mA cm(-2) and 89.17 and 86.72 %, respectively, at 60 mA cm(-2)). The most efficient conditions are low current densities and high temperature reaching total mineralization at an applied charge as low as 20 kAh m(-3). This result confirmed that the electrolysis using diamond anodes is a very interesting technology for the treatment of urine.
Collapse
Affiliation(s)
- Sondos Dbira
- Department of Chemistry, Faculty of Sciences of Gabes, University of Gabes, Gabes, Tunisia
| | | | | | | | | |
Collapse
|
47
|
Souza FL, Teodoro TQ, Vasconcelos VM, Migliorini FL, Lima Gomes PCF, Ferreira NG, Baldan MR, Haiduke RLA, Lanza MRV. Electrochemical oxidation of imazapyr with BDD electrode in titanium substrate. CHEMOSPHERE 2014; 117:596-603. [PMID: 25461923 DOI: 10.1016/j.chemosphere.2014.09.051] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 09/11/2014] [Accepted: 09/15/2014] [Indexed: 06/04/2023]
Abstract
In this work we have studied the treatment of imazapyr by electrochemical oxidation with boron-doped diamond anode. Electrochemical degradation experiments were performed in a one-compartment cell containing 0.45 L of commercial formulations of herbicide in the pH range 3.0-10.0 by applying a density current between 10 and 150 mA cm(-2) and in the temperature range 25-45 °C. The maximum current efficiencies were obtained at lower current densities since the electrochemical system is under mass transfer control. The mineralization rate increased in acid medium and at higher temperatures. The treatment was able to completely degrade imazapyr in the range 4.6-100.0 mg L(-1), although the current charge required rises along with the increasing initial concentration of the herbicide. Toxicity analysis with the bioluminescent bacterium Vibrio fischeri showed that at higher pollutant concentrations the toxicity was reduced after the electrochemical treatment. To clarify the reaction pathway for imazapyr mineralization by OH radicals, LC-MS/MS analyses we performed together with a theoretical study. Ions analysis showed the formation of high levels of ammonium in the cathode. The main final products of the electrochemical oxidation of imazapyr with diamond thin film electrodes are formic, acetic and butyric acids.
Collapse
Affiliation(s)
- F L Souza
- Instituto de Química de São Carlos, Universidade de São Paulo, P.O. Box 780, São Carlos, SP, Brazil
| | | | | | | | | | | | | | | | | |
Collapse
|
48
|
Gargouri B, Gargouri OD, Gargouri B, Trabelsi SK, Abdelhedi R, Bouaziz M. Application of electrochemical technology for removing petroleum hydrocarbons from produced water using lead dioxide and boron-doped diamond electrodes. CHEMOSPHERE 2014; 117:309-315. [PMID: 25129707 DOI: 10.1016/j.chemosphere.2014.07.067] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Revised: 07/16/2014] [Accepted: 07/20/2014] [Indexed: 06/03/2023]
Abstract
Although diverse methods exist for treating polluted water, the most promising and innovating technology is the electrochemical remediation process. This paper presents the anodic oxidation of real produced water (PW), generated by the petroleum exploration of the Petrobras plant-Tunisia. Experiments were conducted at different current densities (30, 50 and 100 mA cm(-2)) using the lead dioxide supported on tantalum (Ta/PbO2) and boron-doped diamond (BDD) anodes in an electrolytic batch cell. The electrolytic process was monitored by the chemical oxygen demand (COD) and the residual total petroleum hydrocarbon [TPH] in order to know the feasibility of electrochemical treatment. The characterization and quantification of petroleum wastewater components were performed by gas chromatography mass spectrometry. The COD removal was approximately 85% and 96% using PbO2 and BDD reached after 11 and 7h, respectively. Compared with PbO2, the BDD anode showed a better performance to remove petroleum hydrocarbons compounds from produced water. It provided a higher oxidation rate and it consumed lower energy. However, the energy consumption and process time make useless anodic oxidation for the complete elimination of pollutants from PW. Cytotoxicity has shown that electrochemical oxidation using BDD could be efficiently used to reduce more than 90% of hydrocarbons compounds. All results suggest that electrochemical oxidation could be an effective approach to treat highly concentrated organic pollutants present in the industrial petrochemical wastewater and significantly reduce the cost and time of treatment.
Collapse
Affiliation(s)
- Boutheina Gargouri
- Laboratoire d'Electrochimie et Environnement, Ecole Nationale d'Ingénieurs de Sfax, BP"1173", 3038-Sfax, Université de Sfax, Tunisia
| | - Olfa Dridi Gargouri
- Laboratoire d'Electrochimie et Environnement, Ecole Nationale d'Ingénieurs de Sfax, BP"1173", 3038-Sfax, Université de Sfax, Tunisia
| | - Bochra Gargouri
- Institut Supérieur de Biotechnologie de Sfax, 3038, BP"1175", 3038-Sfax, Université de Sfax, Tunisia
| | - Souhel Kallel Trabelsi
- Laboratoire d'Electrochimie et Environnement, Ecole Nationale d'Ingénieurs de Sfax, BP"1173", 3038-Sfax, Université de Sfax, Tunisia
| | - Ridha Abdelhedi
- Laboratoire d'Electrochimie et Environnement, Ecole Nationale d'Ingénieurs de Sfax, BP"1173", 3038-Sfax, Université de Sfax, Tunisia
| | - Mohamed Bouaziz
- Laboratoire d'Electrochimie et Environnement, Ecole Nationale d'Ingénieurs de Sfax, BP"1173", 3038-Sfax, Université de Sfax, Tunisia; Institut Supérieur de Biotechnologie de Sfax, 3038, BP"1175", 3038-Sfax, Université de Sfax, Tunisia.
| |
Collapse
|
49
|
Barros WR, Steter JR, Lanza MR, Motheo AJ. Degradation of amaranth dye in alkaline medium by ultrasonic cavitation coupled with electrochemical oxidation using a boron-doped diamond anode. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.07.141] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
50
|
Chen Y, Li H, Liu W, Tu Y, Zhang Y, Han W, Wang L. Electrochemical degradation of nitrobenzene by anodic oxidation on the constructed TiO2-NTs/SnO2-Sb/PbO2 electrode. CHEMOSPHERE 2014; 113:48-55. [PMID: 25065789 DOI: 10.1016/j.chemosphere.2014.03.122] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Revised: 03/21/2014] [Accepted: 03/25/2014] [Indexed: 06/03/2023]
Abstract
The interlayer of Sb-doped SnO2 (SnO2-Sb) and TiO2 nanotubes (TiO2-NTs) on Ti has been introduced into the PbO2 electrode system with the aim to reveal the mechanism of enhanced electrochemical performance of TiO2-NTs/SnO2-Sb/PbO2 electrode. In contrast with the traditional Ti/SnO2-Sb/PbO2 electrode, the constructed PbO2 electrode has a more regular and compact morphology with better oriented crystals of lower size. The TiO2-NTs/SnO2-Sb interlayer prepared by electrodeposition process improves PbO2 coating structure effectively, and enhances the electrochemical performance of PbO2 electrode. Kinetic analyses indicated that the electrochemical oxidation of nitrobenzene on the PbO2 electrodes followed pseudo-first-order reaction, and mass transport was enhanced at the constructed electrode. The accumulation of nitrocompounds of degradation intermediates on constructed electrode was lower, and almost all of the nitro groups were eliminated from aromatic rings after 6h of electrolysis. Higher combustion efficiency was obtained on the constructed TiO2-NTs/SnO2-Sb/PbO2 electrode. The intermediates of nitrobenzene oxidation were confirmed by IC and GC/MS.
Collapse
Affiliation(s)
- Yong Chen
- Jiangsu Key Laboratory of Environmental Engineering, Jiangsu Provincial Academy of Environmental Science, Nanjing 210036, China; School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu Province, China.
| | - Hongyi Li
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu Province, China; Department of Environmental Engineering, Nanjing Institute of Technology, Nanjing 211167, Jiangsu Province, China
| | - Weijing Liu
- Jiangsu Key Laboratory of Environmental Engineering, Jiangsu Provincial Academy of Environmental Science, Nanjing 210036, China
| | - Yong Tu
- Jiangsu Key Laboratory of Environmental Engineering, Jiangsu Provincial Academy of Environmental Science, Nanjing 210036, China
| | - Yaohui Zhang
- Jiangsu Key Laboratory of Environmental Engineering, Jiangsu Provincial Academy of Environmental Science, Nanjing 210036, China
| | - Weiqing Han
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu Province, China
| | - Lianjun Wang
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu Province, China.
| |
Collapse
|