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Munnaf SA, Choi EH. Nonthermal plasma processing catalyzed by CuFe 2O 4 for organic pollutants remediation and bacterial inactivation with density functional theory. CHEMOSPHERE 2024; 362:142613. [PMID: 38880258 DOI: 10.1016/j.chemosphere.2024.142613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2024] [Revised: 06/11/2024] [Accepted: 06/13/2024] [Indexed: 06/18/2024]
Abstract
The suggested nonthermal plasma has been employed for organic pollutants remediation and bacterial inactivation with catalyst (CuFe2O4) via reactive oxygen and nitrogen species, along with catalytic density functional theory processing. The plasma generated species O2- (g.), OH• (g.), H2O2 (aq.), and NOx (aq.) are used for the remediation of organic pollutants, such as reactive black5 and bromocresol green with catalytic oxidative and reductive transformation, like as from Fe2+ (aq.) to Fe3+ (aq.) and from Cu2+ (aq.) to Cu1+ (aq.), respectively. In the presence of plasma with CuFe2O4, the pollutants remediation enhanced more, which is 95 ± 0.78%, rather than only plasma. After removal of pollutants, the plasma processing catalyzed by CuFe2O4 was highly inactivated the E. coli. bacterial growth, which inhibition rate is 100 ± 0.87% and 100 ± 0.69% for reactive black5 and bromocresol green, rather than only plasma, such as 86.41 ± 0.91% and 73.91 ± 0.56%, respectively. The CuFe2O4 generated super oxides (O2- (aq.)) and hydroxides (H+(aq.), OH⦁(aq.), and OOH⦁(aq.)) are rapidly react with bacteria to damage the bacterial cell membrane via catalytic redox process. However, the plasma generated species were react with catalyst to produce the e- charge densities under the redox transformation of spin orientation (±) 0.58 e-, which is 0.007, 0.009, and 0.005 electrons per cubic Angstrom, for CuFe2O4, H2O2(aq.), and NOx(aq.). The plasma generated species concentrations were quantified in the deionized water, which are H2O2(aq.) (145 ± 0.91 μM) and NOx(aq.) (112 ± 0.56 μM), respectively. After eradication of pollutants, the water pH was observed, which is near to the neutral at 6.57 ± 0.27 under the catalytic binary redox process. Moreover, the catalytic stability examined via reusability test, which were four cycles for reactive black5 and three cycles for bromocresol green. Furthermore, the CuFe2O4 nanoparticles conducted several characterizations to analyze the various properties, such as crystal, surface, functional, and elemental.
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Affiliation(s)
- Shaik Abdul Munnaf
- Dept. of Electrical and Biological Physics, Kwangwoon University, South Korea; Plasma Bioscience Research Center (PBRC), Kwangwoon University, South Korea
| | - Eun Ha Choi
- Dept. of Electrical and Biological Physics, Kwangwoon University, South Korea; Plasma Bioscience Research Center (PBRC), Kwangwoon University, South Korea.
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Sarfo DK, Kaur A, Marshall DL, O'Mullane AP. Electrochemical degradation and mineralisation of organic dyes in aqueous nitrate solutions. CHEMOSPHERE 2023; 316:137821. [PMID: 36640986 DOI: 10.1016/j.chemosphere.2023.137821] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 01/09/2023] [Accepted: 01/10/2023] [Indexed: 06/17/2023]
Abstract
Electrochemical treatment of organic matter for environmental remediation necessitates the development of cheap and robust electrodes that are chemically and structurally stable. To address this challenging requirement, we demonstrate a new electrochemical approach using a simple copper electrode under cathodic conditions to electrochemically generate reactive nitrosonium ions for the degradation of different classes of synthetic organic dyes. This could be achieved in an aqueous HNO3/KNO3 electrolyte at a relatively low cathodic potential of -0.5 V RHE at room temperature. UV-visible absorption spectroscopy, Raman spectroscopy, liquid chromatography - mass spectrometry and total organic carbon measurements revealed the rapid decolorisation and mineralisation of several dye types such as triarylmethane dyes (crystal violet, cresol red), an azo dye (methyl orange) as well as a sulfur containing thiazine dye (toluidine blue). The total organic carbon content of a 50 mg L-1 methyl orange solution was found to decrease by 83% after 1 h of electrolysis. Promisingly, locally sourced river and creek water samples spiked with 50 mg L-1 methyl orange were also successfully treated for up to 6 cycles at a simple Cu electrode, demonstrating potential for the remediation of polluted waterways.
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Affiliation(s)
- Daniel K Sarfo
- School of Chemistry and Physics, Queensland University of Technology (QUT), Brisbane, QLD, 4001, Australia; Centre for Materials Science, Queensland University of Technology (QUT), Brisbane, QLD, 4001, Australia
| | - Arshdeep Kaur
- School of Chemistry and Physics, Queensland University of Technology (QUT), Brisbane, QLD, 4001, Australia; Centre for Materials Science, Queensland University of Technology (QUT), Brisbane, QLD, 4001, Australia
| | - David L Marshall
- Central Analytical Research Facility (CARF), Queensland University of Technology (QUT), Brisbane, QLD, 4001, Australia
| | - Anthony P O'Mullane
- School of Chemistry and Physics, Queensland University of Technology (QUT), Brisbane, QLD, 4001, Australia; Centre for Materials Science, Queensland University of Technology (QUT), Brisbane, QLD, 4001, Australia.
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Qamar N, Ashfaq M, Summer S, Khan SR, Masood S, Ali N, Toheed J. Chemical Degradation and Decolorization of Reactive Black B With an Inorganic Oxidant in Acidic Medium. ChemistrySelect 2022. [DOI: 10.1002/slct.202203356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Noshab Qamar
- Department of Chemistry University of Karachi Karachi 75270 Pakistan
| | - Maria Ashfaq
- Department of Chemistry University of Karachi Karachi 75270 Pakistan
| | - Shazia Summer
- Department of Chemistry Jinnah University for Women Karachi Pakistan
| | - Sameera Razi Khan
- Department of Chemistry Federal Urdu University of Arts Science and Technology
| | - Summyia Masood
- Department of Chemistry University of Karachi Karachi 75270 Pakistan
| | - Nida Ali
- Department of Chemistry University of Karachi Karachi 75270 Pakistan
| | - Javeria Toheed
- Department of Chemistry Jinnah University for Women Karachi Pakistan
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Mora-Gómez J, Escribá-Jiménez S, Carrillo-Abad J, García-Gabaldón M, Montañés MT, Mestre S, Pérez-Herranz V. Study of the chlorfenvinphos pesticide removal under different anodic materials and different reactor configuration. CHEMOSPHERE 2022; 290:133294. [PMID: 34919908 DOI: 10.1016/j.chemosphere.2021.133294] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 12/10/2021] [Accepted: 12/11/2021] [Indexed: 06/14/2023]
Abstract
The present manuscript focuses on the study of the electrochemical oxidation of the insecticide Chlorfenvinphos (CVP). The assays were carried out under galvanostatic conditions using boron-doped diamond (BDD) and low-cost tin dioxide doped with antimony (Sb-doped SnO2) as anodes. The influence of the operating variables, such as applied current density, presence or absence of a cation-exchange membrane and concentration of supporting electrolyte, was discussed. The results revealed that the higher applied current density the higher degradation and mineralization of the insecticide for both anodes. The presence of the membrane and the highest concentration of Na2SO4 studied (0.1 M) as a supporting electrolyte benefited the oxidation process of CVP using the BDD electrode, while with the ceramic anode the elimination of CVP was lower under these experimental conditions. Although the BDD electrode showed the best performance, ceramic anodes appear as an interesting alternative as they were able to degrade CVP completely for the highest applied current density values. Toxicity tests revealed that the initial solution of CVP was more toxic than the samples treated with the ceramic electrode, while using the BDD electrode the toxicity of the sample increased.
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Affiliation(s)
- J Mora-Gómez
- IEC Group, ISIRYM, Universitat Politècnica de València, Camí de Vera S/n, 46022, València, P.O. Box 22012, E-46071, Spain
| | - S Escribá-Jiménez
- IEC Group, ISIRYM, Universitat Politècnica de València, Camí de Vera S/n, 46022, València, P.O. Box 22012, E-46071, Spain
| | - J Carrillo-Abad
- IEC Group, ISIRYM, Universitat Politècnica de València, Camí de Vera S/n, 46022, València, P.O. Box 22012, E-46071, Spain
| | - M García-Gabaldón
- IEC Group, ISIRYM, Universitat Politècnica de València, Camí de Vera S/n, 46022, València, P.O. Box 22012, E-46071, Spain.
| | - M T Montañés
- IEC Group, ISIRYM, Universitat Politècnica de València, Camí de Vera S/n, 46022, València, P.O. Box 22012, E-46071, Spain
| | - S Mestre
- Instituto Universitario de Tecnología Cerámica, Universitat Jaume I, Castellón, Spain
| | - V Pérez-Herranz
- IEC Group, ISIRYM, Universitat Politècnica de València, Camí de Vera S/n, 46022, València, P.O. Box 22012, E-46071, Spain
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Cong J, Xie X, Liu Y, Qin Y, Fan J, Fang Y, Liu N, Zhang Q, Song X, Sand W. Biochemical characterization of a novel azo reductase named BVU5 from the bacterial flora DDMZ1: application for decolorization of azo dyes. RSC Adv 2022; 12:1968-1981. [PMID: 35425265 PMCID: PMC8979046 DOI: 10.1039/d1ra08090c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Accepted: 12/09/2021] [Indexed: 12/07/2022] Open
Abstract
One of the main mechanisms of bacterial decolorization and degradation of azo dyes is the use of biological enzymes to catalyze the breaking of azo bonds. This paper shows the expression and properties of a novel azo reductase (hybrid-cluster NAD(P)-dependent oxidoreductase, accession no. A0A1S1BVU5, named BVU5) from the bacterial flora DDMZ1 for degradation of azo dyes. The molecular weight of BVU5 is about 40.1 kDa, and it contains the prosthetic group flavin mononucleotide (FMN). It has the decolorization ability of 80.1 ± 2.5% within 3 min for a dye concentration of 20 mg L−1, and 53.5 ± 1.8% even for a dye concentration of 200 mg L−1 after 30 min. The optimum temperature of enzyme BVU5 is 30 °C and the optimum pH is 6. It is insensitive to salt concentration up to a salinity level of 10%. Furthermore, enzyme BVU5 has good tolerance toward some metal ions (2 mM) such as Mn2+, Ca2+, Mg2+ and Cu2+ and some organic solvents (20%) such as DMSO, methanol, isopentyl, ethylene glycol and N-hexane. However, the enzyme BVU5 has a low tolerance to high concentrations of denaturants. In particular, it is sensitive to the denaturants guanidine hydrochloride (GdmCl) (2 M) and urea (2 M). Analysis of the dye substrate specificity shows that enzyme BVU5 decolorizes most azo dyes, which is indicating that the enzyme is not strictly substrate specific, it is a functional enzyme for breaking the azo structure. Liquid chromatography/time-of-flight/mass spectrometry (LC-TOF-MS) revealed after the action of enzyme BVU5 that some intermediate products with relatively large molecular weights were produced; this illustrates a symmetric or an asymmetric rapid cleavage of the azo bonds by this enzyme. The potential degradation pathways and the enzyme-catalyzed degradation mechanism are deduced in the end of this paper. The results give insight into the potential of a rapid bio-pretreatment by enzyme BVU5 for processing azo dye wastewater. The combination of BVU5 enzyme and coenzyme NADH can quickly degrade the azo dye RB5.![]()
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Affiliation(s)
- Junhao Cong
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Key Laboratory of Pollution Control and Emission Reduction Technology for Textile Industry, Donghua University Shanghai 201620 China
| | - Xuehui Xie
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Key Laboratory of Pollution Control and Emission Reduction Technology for Textile Industry, Donghua University Shanghai 201620 China.,Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092 P. R. China
| | - Yanbiao Liu
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Key Laboratory of Pollution Control and Emission Reduction Technology for Textile Industry, Donghua University Shanghai 201620 China
| | - Yan Qin
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Key Laboratory of Pollution Control and Emission Reduction Technology for Textile Industry, Donghua University Shanghai 201620 China
| | - Jiao Fan
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Key Laboratory of Pollution Control and Emission Reduction Technology for Textile Industry, Donghua University Shanghai 201620 China
| | - Yingrong Fang
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Key Laboratory of Pollution Control and Emission Reduction Technology for Textile Industry, Donghua University Shanghai 201620 China
| | - Na Liu
- School of Environment and Surveying Engineering, Suzhou University Suzhou Anhui 234000 China
| | - Qingyun Zhang
- School of Chemical and Environmental Engineering, Anhui Polytechnic University Wuhu Anhui 241000 China
| | - Xinshan Song
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Key Laboratory of Pollution Control and Emission Reduction Technology for Textile Industry, Donghua University Shanghai 201620 China.,Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092 P. R. China
| | - Wolfgang Sand
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Key Laboratory of Pollution Control and Emission Reduction Technology for Textile Industry, Donghua University Shanghai 201620 China.,Institute of Biosciences, Freiberg University of Mining and Technology Freiberg 09599 Germany
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Technical–Economic Analysis of Hydrogen Peroxide Activation by a Sacrificial Anode: Comparison of Two Exchange Membranes. Electrocatalysis (N Y) 2021. [DOI: 10.1007/s12678-021-00689-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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Bhat AP, Gogate PR. Degradation of nitrogen-containing hazardous compounds using advanced oxidation processes: A review on aliphatic and aromatic amines, dyes, and pesticides. JOURNAL OF HAZARDOUS MATERIALS 2021; 403:123657. [PMID: 33264866 DOI: 10.1016/j.jhazmat.2020.123657] [Citation(s) in RCA: 74] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 07/29/2020] [Accepted: 08/01/2020] [Indexed: 06/12/2023]
Abstract
Nitrogen-containing amino and azo compounds are widely used in textile, agricultural and chemical industries. Most of these compounds have been demonstrated to be resistant to conventional degradation processes. Advanced oxidation processes can be effective to mineralize nitrogen-containing compounds and improve the efficacy of overall treatment schemes. Due to a global concern for the occurrence of toxic and hazardous amino-compounds and their harmful degradation products in water, it is important to develop technologies that focus on all the aspects of their degradation. Our focus is to present a state-of-the-art review on the degradation of several amine- and azo-based compounds using advanced oxidation processes. The categories reviewed are aromatic amines, aliphatic amines, N-containing dyes and N-containing pesticides. Data has been compiled for degradation efficiencies of each process, reaction mechanisms focusing on specific attack of oxidants on N atoms, the effect of process parameters like pH, initial concentration, time of treatment, etc. and identification of intermediates. Several AOPs have been compared to provide a systematic overview of available literature that will drive essential aspects of future research on amine-based compounds. Ozone is observed to be highly reactive to most amines, dyes and pesticides, followed by Fenton processes. Degradation of amines is highly sensitive to pH and mechanisms differ at different pH values. Cavitation is a promising alternative pre-treatment method for cost reduction. Hybrid methods under optimized conditions are demonstrated to give synergistic effects and must be tailored for specific effluents in question. In conclusion, even though nitrogen-containing compounds are recalcitrant in nature, the use of advanced oxidation processes at carefully established optimum conditions can yield highly efficient degradation of the compounds.
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Affiliation(s)
- Akash P Bhat
- Department of Chemical Engineering, Institute of Chemical Technology, Matunga, Mumbai, 400019, India
| | - Parag R Gogate
- Department of Chemical Engineering, Institute of Chemical Technology, Matunga, Mumbai, 400019, India.
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Effects of the Addition of Fe, Co on the Azo Dye Degradation Ability of Mn-Al Mechanically Alloyed Powders. METALS 2020. [DOI: 10.3390/met10121578] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Azo compounds are used in the textile and leather industry. A significant step during the azo dyes treatment of water is the degradation by breaking the N=N bonds. This break produces the decolorization of water. In this research work, 10% atomic of Fe or Co was added to produce ternary Mn-Al-rich, nanostructured, mechanically alloyed powders in order to improve the decolorization of Reactive Black 5 solutions and to check Fe and Co addition’s influence. The microstructure was followed by X-ray diffraction, the morphology and composition by electronic microscopy and energy-dispersive X-ray spectroscopy (EDS) microanalysis. The dye degradation was monitored with ultraviolet/visible absorption spectrophotometry. After degradation, the remaining organic compound was checked by high-performance liquid chromatography (HPLC) and the functional groups of the powdered alloys by infrared spectroscopy. Fe addition to Mn-Al displayed faster kinetics and a higher efficiency than the Co addition. The Mn-Al-Fe solution (0.25 g/100 mL) was fully decolorized in 5 min. On the other side, Mn-Al-Co powders were able to successfully decolorize the dyed solution in 10 min under the same conditions. Thus, nanocrystalline Fe-doped Mn-Al alloys are good candidates for use in the decolorization process, in comparison with Co-doped and other intermetallic particles.
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9
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Electroless deposition of gold nanoparticles on a glassy carbon surface to attain methylene blue degradation via oxygen reduction reactions. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136966] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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10
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Electrochemical Degradation of Reactive Black 5 using two-different reactor configuration. Sci Rep 2020; 10:4482. [PMID: 32161357 PMCID: PMC7066175 DOI: 10.1038/s41598-020-61501-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Accepted: 02/18/2020] [Indexed: 11/27/2022] Open
Abstract
Novel Sb-doped SnO2 ceramic electrodes sintered at different temperatures, are applied to the degradation of Reactive Black 5 in both divided and undivided electrochemical reactors. In the undivided reactor the discoloration of the solution took place via the oxidation of RB5 dye, without the corresponding reduction in the chemical oxygen demand for the ceramic electrodes. However, in the divided one, it was possible to achieve the discoloration of the solution while at the same time decreasing the chemical oxygen demand through the ·OH-mediated oxidation, although the chemical oxygen demand degradation took place at a slower rate.
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Rafiee E, Pami N, Zinatizadeh AA, Eavani S. A new polyoxometalate-TiO2 nanocomposite for efficient visible photodegradation of dye from wastewater, liquorice and yeast extract: Photoelectrochemical, electrochemical, and physical investigations. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2019.112145] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Medel A, Treviño-Reséndez J, Brillas E, Meas Y, Sirés I. Contribution of cathodic hydroxyl radical generation to the enhancement of electro-oxidation process for water decontamination. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2019.135382] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Zhang Q, Xie X, Liu Y, Zheng X, Wang Y, Cong J, Yu C, Liu N, He Z, Liu J, Sand W. Sugar sources as Co-substrates promoting the degradation of refractory dye: A comparative study. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 184:109613. [PMID: 31491606 DOI: 10.1016/j.ecoenv.2019.109613] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 08/23/2019] [Accepted: 08/26/2019] [Indexed: 06/10/2023]
Abstract
Four sugar sources were used as co-substrates to promote the degradation of a selected refractory dye reactive black 5 (RB5) by the natural bacterial flora DDMZ1. The boosting performance of the four sugar sources on RB5 decolorization ranked as: fructose > sucrose > glucose > glucose + fructose. Kinetic results of these four co-metabolism systems agreed well with a first-order kinetic model. Four sugar sources stimulated the extracellular azoreductase secretion causing enhanced enzyme activity. An increased formation of low molecular weight intermediates was caused by the addition of sugar sources. The toxicity of RB5 degradation products was significantly reduced in the presence of sugar sources. The bacterial community structure differed remarkably as a result of sugar sources addition. For a fructose addition, a considerably enriched population of the functional species Burkholderia-Paraburkholderia and Klebsiella was noted. The results enlarge our knowledge of the microkinetic and microbiological mechanisms of co-metabolic degradation of refractory pollutants.
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Affiliation(s)
- Qingyun Zhang
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, PR China
| | - Xuehui Xie
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, PR China.
| | - Yanbiao Liu
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, PR China
| | - Xiulin Zheng
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, PR China
| | - Yiqin Wang
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, PR China
| | - Junhao Cong
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, PR China
| | - Chengzhi Yu
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, PR China
| | - Na Liu
- School of Environment and Surveying Engineering, Suzhou University, Suzhou, Anhui, 234000, China
| | - Zhenjiang He
- School of Metallurgy and Environment, Central South University, Changsha, 410083, PR China
| | - Jianshe Liu
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, PR China
| | - Wolfgang Sand
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, PR China; Institute of Biosciences, Freiberg University of Mining and Technology, Freiberg, 09599, Germany
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15
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Lacasa E, Cañizares P, Walsh FC, Rodrigo MA, Ponce-de-León C. Removal of methylene blue from aqueous solutions using an Fe2+ catalyst and in-situ H2O2 generated at gas diffusion cathodes. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.03.218] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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16
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Reactive Black 5 Degradation on Manganese Oxides Supported on Sodium Hydroxide Modified Graphene Oxide. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9102167] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Sodium hydroxide-modified graphene oxide was used as manganese oxides support for the preparation of nanocomposites via a one-pot preparation route for the degradation of Reactive Black 5. The nanocomposites were characterized for their structure by X-ray diffraction, for their textural properties by Nitrogen adsorption, and for their surface chemistry by Fourier transform infrared spectroscopy, potentiometric titration, and thermal analysis measurements. The nanocomposites prepared showed to possess high activity for the degradation/oxidation of Reactive Black 5 at ambient conditions, without light irradiation, which was higher than that of the precursors manganese oxides and can be attributed to the synergistic effect of the manganese oxides and the modified graphene oxide.
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Zhang Q, Xie X, Liu Y, Zheng X, Wang Y, Cong J, Yu C, Liu N, Liu J, Sand W. Fructose as an additional co-metabolite promotes refractory dye degradation: Performance and mechanism. BIORESOURCE TECHNOLOGY 2019; 280:430-440. [PMID: 30784993 DOI: 10.1016/j.biortech.2019.02.046] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 02/07/2019] [Accepted: 02/08/2019] [Indexed: 06/09/2023]
Abstract
In this work, the performance and mechanism for the boosting effects of fructose as an additional co-metabolite towards the biological treatment of reactive black 5 were systematically investigated. A decolorization efficiency of 98% was obtained in sample FRU200 (with 3 g/L fructose added based on 3 g/L yeast extract), which was 21% higher than that without fructose. Several intermediates with low molecular weight generated in sample FRU200 and different metabolic pathways were deduced. The bacterial community structure significantly changed due to fructose addition. Label-free quantitative proteomic approach suggested that several up-regulated proteins in sample FRU200 might play essential roles during the degradation. Furthermore, the mechanisms of RB5 degradation by proteins/enzymes of the dominant species in flora DDMZ1 were proposed. This work deepens our understanding of the molecular and ecological mechanism of fructose as co-metabolite enhancing the biodegradation of refractory organic pollutants by a natural bacterial flora.
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Affiliation(s)
- Qingyun Zhang
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Xuehui Xie
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.
| | - Yanbiao Liu
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Xiulin Zheng
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
| | - Yiqin Wang
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
| | - Junhao Cong
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
| | - Chengzhi Yu
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
| | - Na Liu
- School of Environment and Surveying Engineering, Suzhou University, Suzhou, Anhui 234000, China
| | - Jianshe Liu
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Wolfgang Sand
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China; Institute of Biosciences, Freiberg University of Mining and Technology, Freiberg 09599, Germany; Biofilm Centre, University Duisburg-Essen, Essen, Germany
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18
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Abstract
Graphene oxide (GO) was used as a support for manganese oxide (MnO2) for the preparation of a nanocomposite catalyst for the degradation of an azo dye, Reactive Black 5 (RB5). The nanocomposite was characterized for the structure by XRD, for the morphology with SEM, and for the surface chemistry with FTIR and potentiometric titration measurements. The GO-MnO2 nanocomposite presented a high catalytic activity for the degradation/oxidation of RB5 at ambient conditions, which was higher than that of the pure MnO2 and could be attributed to the beneficial contribution of the manganese oxide and the graphene oxide.
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Aveiro LR, Da Silva AGM, Candido EG, Antonin VS, Parreira LS, Papai R, Gaubeur I, Silva FL, Lanza MRV, Camargo PHC, Santos MC. Application and stability of cathodes with manganese dioxide nanoflowers supported on Vulcan by Fenton systems for the degradation of RB5 azo dye. CHEMOSPHERE 2018; 208:131-138. [PMID: 29864704 DOI: 10.1016/j.chemosphere.2018.05.107] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 05/16/2018] [Accepted: 05/17/2018] [Indexed: 06/08/2023]
Abstract
This work describes the electrochemical degradation of Reactive Black 5 (RB5) by two methods: electrochemical and photo-assisted electrochemical degradation with and without a Fenton reagent. Two anodes were used, Pt and boron-doped diamond (BDD, 2500 ppm), and the cathode was 3% MnO2 nanoflowers (NFMnO2) on a carbon gas diffusion electrode (GDE). An electrochemical cell without a divider with a GDE with 3% w/w NFMnO2/C supported on carbon Vulcan XC72 was used. The decolorization efficiency was monitored by UV-vis spectroscopy, and the degradation was monitored by Total Organic Carbon (TOC) analysis. For dissolution monitoring, aliquots (1 mL) were collected during the degradation. After 6 h of H2O2 electrogeneration, the manganese concentration in the RB5 solution was only 23.1 ± 1.2 μg L-1. It was estimated that approximately 60 μg L-1 (<0.2%) of manganese migrated from the GDE to the solution after 12 h of electrolysis, which indicated the good stability of the GDE. The photoelectro-Fenton-BDD (PEF-BDD) processes showed both the best color removal percentage (∼93%) and 91% of mineralization. The 3% NFMnO2/C GDE is promising for RB5 degradation.
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Affiliation(s)
- L R Aveiro
- Federal University of ABC, UFABC, Centre of Natural and Human Sciences, Laboratory of Electrochemistry and Nanostructured Materials, St André, CEP 09210-170, Brazil
| | - A G M Da Silva
- University Sao Paulo, USP, Institute of Chemistry, São Paulo, Av. Prof. Lineu Prestes, 748, CEP 05508-000, Brazil
| | - E G Candido
- University Sao Paulo, USP, Institute of Chemistry, São Paulo, Av. Prof. Lineu Prestes, 748, CEP 05508-000, Brazil
| | - V S Antonin
- Federal University of ABC, UFABC, Centre of Natural and Human Sciences, Laboratory of Electrochemistry and Nanostructured Materials, St André, CEP 09210-170, Brazil; University Sao Paulo, USP, Institute of Chemistry of São Carlos, São Carlos, SP CEP 13560-970, São Carlos, Brazil
| | - L S Parreira
- University Sao Paulo, USP, Institute of Chemistry, São Paulo, Av. Prof. Lineu Prestes, 748, CEP 05508-000, Brazil
| | - R Papai
- Federal University of ABC, UFABC, Centre of Natural and Human Sciences, Laboratory of Electrochemistry and Nanostructured Materials, St André, CEP 09210-170, Brazil
| | - I Gaubeur
- Federal University of ABC, UFABC, Centre of Natural and Human Sciences, Laboratory of Electrochemistry and Nanostructured Materials, St André, CEP 09210-170, Brazil
| | - Fernando L Silva
- University Sao Paulo, USP, Institute of Chemistry of São Carlos, São Carlos, SP CEP 13560-970, São Carlos, Brazil
| | - M R V Lanza
- University Sao Paulo, USP, Institute of Chemistry of São Carlos, São Carlos, SP CEP 13560-970, São Carlos, Brazil
| | - P H C Camargo
- University Sao Paulo, USP, Institute of Chemistry, São Paulo, Av. Prof. Lineu Prestes, 748, CEP 05508-000, Brazil.
| | - M C Santos
- Federal University of ABC, UFABC, Centre of Natural and Human Sciences, Laboratory of Electrochemistry and Nanostructured Materials, St André, CEP 09210-170, Brazil.
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20
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Rivero EP, Rodríguez FA, Cruz-Díaz MR, González I. Reactive diffusion migration layer and mass transfer wall function to model active chlorine generation in a filter press type electrochemical reactor for organic pollutant degradation. Chem Eng Res Des 2018. [DOI: 10.1016/j.cherd.2018.07.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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21
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22
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Ochoa-Chavez AS, Pieczyńska A, Fiszka Borzyszkowska A, Espinoza-Montero PJ, Siedlecka EM. Electrochemical degradation of 5-FU using a flow reactor with BDD electrode: Comparison of two electrochemical systems. CHEMOSPHERE 2018; 201:816-825. [PMID: 29554628 DOI: 10.1016/j.chemosphere.2018.03.050] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2017] [Revised: 03/06/2018] [Accepted: 03/07/2018] [Indexed: 06/08/2023]
Abstract
In this study, the electrochemical degradation process of 5-fluorouracil (5-FU) in aqueous media was performed using a continuous flow reactor in an undivided cell (system I), and in a divided cell with a cationic membrane (Nafion® 424) (system II). In system I, 75% of 5-FU degradation was achieved (50 mg L-1) with a applied current density japp = 150 A m-2, volumetric flow rate qv = 13 L h-1, after 6 h of electrolysis (kapp = 0.004 min-1). The removal efficiency of 5-FU was higher (95%) when the concentration was 5 mg L-1 under the same conditions. Nitrates (22% of initial amount of N), fluorides (27%) and ammonium (10%) were quantified after 6 h of electrolysis. System II, 77% of 5-FU degradation was achieved (50 mg L-1) after 6 h of electrolysis (kapp = 0.004 min-1). The degradation rate of 5-FU was complete when the concentration was 5 mg L-1 under the same conditions. Nitrates (29% of initial amount of N), fluorides (25%) and ammonium (5%) were quantified after 6 h of electrolysis. In addition, the main organic byproducts identified by mass spectroscopy were aliphatic compound with carbonyl and carboxyl functionalities. Due to, the mineralization of 5-FU with acceptable efficiency of 88% found in system II (japp of 200 A m-2), this system seems to be more promising in the cytostatic drug removal. Moreover the efficiency of 5-FU removal in diluted solutions is better in system II than in system I.
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Affiliation(s)
- A S Ochoa-Chavez
- Escurla Politécnica Nacional, Departamento de Ingeniería Civil y Ambiental, Centro de Investigación y Control Ambiental, Ladrón de Guevara E11-253, P.O. Box 17-01-2759, Quito, Ecuador
| | - A Pieczyńska
- University of Gdansk, Faculty of Chemistry, Department of Environmental Technology, 80 308 Gdansk, Poland
| | - A Fiszka Borzyszkowska
- University of Gdansk, Faculty of Chemistry, Department of Environmental Technology, 80 308 Gdansk, Poland
| | - P J Espinoza-Montero
- Escurla Politécnica Nacional, Departamento de Ingeniería Civil y Ambiental, Centro de Investigación y Control Ambiental, Ladrón de Guevara E11-253, P.O. Box 17-01-2759, Quito, Ecuador
| | - E M Siedlecka
- University of Gdansk, Faculty of Chemistry, Department of Environmental Technology, 80 308 Gdansk, Poland.
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23
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Bouzayani B, Bocos E, Elaoud SC, Pazos M, Sanromán MÁ, González-Romero E. An effective electroanalytical approach for the monitoring of electroactive dyes and intermediate products formed in electro-Fenton treatment. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2017.06.035] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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24
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Jager D, Kupka D, Vaclavikova M, Ivanicova L, Gallios G. Degradation of Reactive Black 5 by electrochemical oxidation. CHEMOSPHERE 2018; 190:405-416. [PMID: 29024885 DOI: 10.1016/j.chemosphere.2017.09.126] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 09/25/2017] [Accepted: 09/26/2017] [Indexed: 06/07/2023]
Abstract
Degradation of commercial grade Reactive Black 5 (RB5) azo dye by chemical and electrochemical treatment was examined using a dimensionally stable anode and stainless steel cathodes as electrode materials, with NaCl as supporting electrolyte. The electrochemical treatment was compared to the chemical treatment with hypochlorite generated by electrolysis. The compounds present in the commercial grade RB5 azo dye and the products of its electrochemical degradation were separated using ion-pairing high performance liquid chromatography on reversed phase. The separated species were detected by diode array detector and electrospray ionization mass spectrometry. A suitable ion-pairing reversed phase HPLC-MS method with electrospray ionization for the separation and identification of the components was developed. The accurate mass of the parent and fragment ions were used in the determination of the empirical formulas of the components using the first-order mass spectra. Structural formulas of degradation products were proposed using these information and principles of organic chemistry and electrochemistry.
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Affiliation(s)
- David Jager
- Institute of Geotechnics, Slovak Academy of Sciences, Watsonova 45, 040 01, Kosice, Slovakia
| | - Daniel Kupka
- Institute of Geotechnics, Slovak Academy of Sciences, Watsonova 45, 040 01, Kosice, Slovakia
| | - Miroslava Vaclavikova
- Institute of Geotechnics, Slovak Academy of Sciences, Watsonova 45, 040 01, Kosice, Slovakia.
| | - Lucia Ivanicova
- Institute of Geotechnics, Slovak Academy of Sciences, Watsonova 45, 040 01, Kosice, Slovakia
| | - George Gallios
- Aristotle University of Thessaloniki, School of Chemistry, Lab. Chemical & Environmental Technology, University Campus, 54124, Thessaloniki, Greece
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25
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Liu S, Feng X, Gu F, Li X, Wang Y. Sequential reduction/oxidation of azo dyes in a three-dimensional biofilm electrode reactor. CHEMOSPHERE 2017; 186:287-294. [PMID: 28787684 DOI: 10.1016/j.chemosphere.2017.08.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2017] [Revised: 07/30/2017] [Accepted: 08/01/2017] [Indexed: 06/07/2023]
Abstract
By combining sequential anaerobic-aerobic reactor and penetrable cathode-anode operation, a novel anaerobic/aerobic sequencing three-dimensional biofilm electrode reactor (3D-BER) was developed to evaluate the degradation of azo dye reactive brilliant red X-3B (RBRX-3B). In the bottom cathodic region, anaerobic reductive conditions and H2 were produced for the bioreduction of azo dyes; in the top anodic region, aerobic oxidative conditions and O2 were produced for the mineralization of dye intermediates. Due to the supply of electrical power, electrons could be mediated via electrolysis of water or directly transfer between electrodes and microbe cells. The biofilm immobilized on the surface of the cathode utilized electrode or H2 as electron donors and accelerated the rate of RBRX-3B reduction, and the decolorization rate was significantly increased 2.6-3.7 fold, reaching at 2.52-3.39 mol/m3/d at an energy consumption of 0.15 kWh/mol RBRX-3B. RBRX-3B was reductively cleaved into aromatic amines at the biocathode and these amines were effectively removed at the bioanode. Acute toxicity tests showed that the intermediates of RBRX-3B were more toxic when compared with the initial influent, and the 3D-BER effluent exhibited much lower toxicity (5% inhibition of bioluminescence of Vibrio fisheri) than the electrochemical and biological effluent (65% and 30% inhibition, respectively). These findings suggest the novel 3D-BER may provide a promising alternative to remove azo dyes in dyeing wastewater.
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Affiliation(s)
- Shentan Liu
- School of Energy and Environment, Southeast University, Nanjing, 210096, China; School of Environment, Beijing Key Laboratory for Emerging Organic Contaminants Control, State Key Joint Laboratory of Environmental Simulation and Pollution Control, Tsinghua University, Beijing, 100084, China.
| | - Xiaojuan Feng
- Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
| | - Feng Gu
- School of Energy and Environment, Southeast University, Nanjing, 210096, China
| | - Xianning Li
- School of Energy and Environment, Southeast University, Nanjing, 210096, China.
| | - Yujue Wang
- School of Environment, Beijing Key Laboratory for Emerging Organic Contaminants Control, State Key Joint Laboratory of Environmental Simulation and Pollution Control, Tsinghua University, Beijing, 100084, China
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26
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Turkten N, Cinar Z. Photocatalytic decolorization of azo dyes on TiO 2 : Prediction of mechanism via conceptual DFT. Catal Today 2017. [DOI: 10.1016/j.cattod.2017.01.019] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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27
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Najafpoor AA, Davoudi M, Rahmanpour Salmani E. Decolorization of synthetic textile wastewater using electrochemical cell divided by cellulosic separator. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2017; 15:11. [PMID: 28560044 PMCID: PMC5445381 DOI: 10.1186/s40201-017-0273-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Accepted: 05/16/2017] [Indexed: 05/30/2023]
Abstract
BACKGROUND Annually, large quantities of dyes are produced and consumed in different industries. The discharge of highly colored textile effluents to the aquatic environments causes serious health problems in living organisms. This paper investigates the performance of each of the electro-oxidation and electro-reduction pathways in the removal of reactive red 120 (RR120) from synthetic textile effluents using a novel electrochemical reactor. METHODS In the current study, a two-compartment reactor divided by cellulosic separator was applied in batch mode using graphite anodes and stainless steel cathodes. Central Composite Design was used to design the experiments and find the optimal conditions. The operational parameters were initial dye concentration (100-500 mg L-1), sodium chloride concentration (2500-12,500 mg L-1), electrolysis time (7.5-37.5 min), and current intensity (0.06-0.3 A). RESULTS The results showed that electro-oxidation was much more efficient than electro-reduction in the removal of RR120. According to the developed models, current intensity was the most effective factor on the electro-oxidation of RR120 as well as in power consumption (Coefficients of 12.06 and 0.73, respectively). With regard to the dye removal through electro-reduction, electrolysis time (coefficient of 8.05) was the most influential factor. Under optimal conditions (RR120 = 200 mg.L-1, NaCl = 7914.29 mg.L-1, current intensity = 0.12 A, and reaction time = 30 min), the dye was removed as 99.44 and 32.38% via electro-oxidation and electro-reduction mechanisms, respectively, with consuming only 1.21 kwhm-3 of electrical energy. CONCLUSIONS According to the results, electro-oxidation using graphite anodes in a cell divided by cellulosic separator is very efficient, compared to electro-reduction, in the removal of RR120 from aqueous solutions.
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Affiliation(s)
- Ali Asghar Najafpoor
- Health Sciences Research Center, Department of Environmental Health Engineering, School of Health, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mojtaba Davoudi
- Department of Environmental Health Engineering, School of Health, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran
| | - Elham Rahmanpour Salmani
- Student Research Committee, School of Health, Mashhad University of Medical Sciences, Mashhad, Iran
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28
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Popli S, Patel UD. Mechanistic aspects of electro-catalytic reduction of Reactive Black 5 dye in a divided cell in the presence of silver nano-particles. Sep Purif Technol 2017. [DOI: 10.1016/j.seppur.2017.02.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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29
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Mook WT, Ajeel MA, Aroua MK, Szlachta M. The application of iron mesh double layer as anode for the electrochemical treatment of Reactive Black 5 dye. J Environ Sci (China) 2017; 54:184-195. [PMID: 28391928 DOI: 10.1016/j.jes.2016.02.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Revised: 02/10/2016] [Accepted: 02/15/2016] [Indexed: 06/07/2023]
Abstract
In this work a novel anode configuration consisting of an iron mesh double layer is proposed for the electrochemical treatment of wastewater. The removal of Reactive Black 5 dye (RB5) from synthetic contaminated water was used as a model system. At a constant anode surface area, identical process operating parameters and batch process mode, the iron mesh double layer electrode showed better performance compared to the conventional single layer iron mesh. The double layer electrode was characterized by RB5 and chemical oxygen demand (COD) removal efficiency of 98.2% and 97.7%, respectively, kinetic rate constant of 0.0385/min, diffusion coefficient of 4.9×10-5cm2/sec and electrical energy consumption of 20.53kWh/kgdye removed. In the continuous flow system, the optimum conditions suggested by Response Surface Methodology (RSM) are: initial solution pH of 6.29, current density of 1.6mA/cm2, electrolyte dose of 0.15g/L and flow rate of 11.47mL/min which resulted in an RB5 removal efficiency of 81.62%.
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Affiliation(s)
- Wei Tze Mook
- Department of Chemical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia.
| | - Mohammed A Ajeel
- Department of Chemical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | | | - Małgorzata Szlachta
- Department of Environmental Engineering, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
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30
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Najafpoor AA, Davoudi M, Salmani ER. Optimization of copper removal from aqueous solutions in a continuous electrochemical cell divided by cellulosic separator. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2017; 75:1233-1242. [PMID: 28272052 DOI: 10.2166/wst.2016.619] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Copper, as an inseparable part of many industrial discharges, threatens both public and environmental health. In this work, an electrochemical cell utilizing a cellulosic separator was used to evaluate Cu removal using graphite anodes and stainless steel cathodes in a continuous-flow mode reactor. In the experimental matrix, Cu concentration (1-5 mg L-1), electrolysis time (20-90 min), and current intensity (0.1-0.4 A) were employed. Results showed that the maximum removal efficiency of copper was obtained as 99%. The removal efficiency was independent of initial copper concentration and directly related to electrolysis time and current intensity. Energy consumption was more dependent on current intensity than electrolysis time. Under optimal conditions (75.8 min electrolysis time, 0.18 A current intensity, and 3 mg L-1 copper concentration), the removal efficiency was obtained as 91% while 7.05 kWh m-3 electrical energy was consumed. The differences between the actual and predicted data under optimal conditions were 0.42% for copper removal and 0.23% for energy consumption, which signify the performance and reliability of the developed models. The results exhibited the suitability of the electrochemical reduction for copper removal from aqueous solutions, which was facilitated under alkaline conditions prevailing in the cathodic compartment due to applying a cell divided by a cellulosic separator.
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Affiliation(s)
- Ali Asghar Najafpoor
- Health Sciences Research Center, Department of Environmental Health Engineering, School of Health, Mashhad University of Medical Sciences, 18th Daneshgah Street, Mashhad, Iran
| | - Mojtaba Davoudi
- Department of Environmental Health Engineering, School of Health, Torbat Heydariyeh University of Medical Sciences, Razi Street, Torbat Heydariyeh, Iran
| | - Elham Rahmanpour Salmani
- Student Research Committee, School of Health, Mashhad University of Medical Sciences, 18th Daneshgah Street, Mashhad, Iran E-mail:
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31
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Ben Mbarek W, Azabou M, Pineda E, Fiol N, Escoda L, Suñol JJ, Khitouni M. Rapid degradation of azo-dye using Mn–Al powders produced by ball-milling. RSC Adv 2017. [DOI: 10.1039/c6ra28578c] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This study was conducted on the reduction reaction of the azo dye Reactive Black 5 by means of the Mn85Al15 particles prepared by melt-spinning and ball-milling processes.
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Affiliation(s)
- W. Ben Mbarek
- Laboratoire de Chimie Inorganique
- UR-11-Es-73
- Faculté des Sciences de Sfax
- University of Sfax
- Tunisia
| | - M. Azabou
- Laboratoire de Chimie Inorganique
- UR-11-Es-73
- Faculté des Sciences de Sfax
- University of Sfax
- Tunisia
| | - E. Pineda
- Universitatpolitècnica De Catalunya
- Dept. Física i EnginyeriaNuclear
- ESAB
- 08660 Castelldefels
- Spain
| | - N. Fiol
- Universitat de Girona
- P-II Campus Montilivi
- Girona
- Spain
| | - L. Escoda
- Dep. deFisica
- Universitat de Girona
- Campus Montilivi
- Girona 17071
- Spain
| | - J. J. Suñol
- Dep. deFisica
- Universitat de Girona
- Campus Montilivi
- Girona 17071
- Spain
| | - M. Khitouni
- Laboratoire de Chimie Inorganique
- UR-11-Es-73
- Faculté des Sciences de Sfax
- University of Sfax
- Tunisia
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32
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Irikura K, Bocchi N, Rocha-Filho RC, Biaggio SR, Iniesta J, Montiel V. Electrodegradation of the Acid Green 28 dye using Ti/β-PbO2 and Ti-Pt/β-PbO2 anodes. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2016; 183:306-313. [PMID: 27604754 DOI: 10.1016/j.jenvman.2016.08.061] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Revised: 07/15/2016] [Accepted: 08/24/2016] [Indexed: 06/06/2023]
Abstract
The statistical Response Surface Methodology (RSM) is applied to investigate the effect of different parameters (current density, j, NaCl concentration, [NaCl], pH, and temperature, θ) and their interactions on the electrochemical degradation of the Acid Green (AG) 28 dye using a Ti/β-PbO2 or Ti-Pt/β-PbO2 anode in a filter-press reactor. LC/MS is employed to identify intermediate compounds. For both anodes, the best experimental conditions are j = 50 mA cm(-2), [NaCl] = 1.5 g L(-1), pH = 5, and θ = 25 °C. After 3 h of electrolysis, a dye solution treated under these conditions presents the following parameters: electric charge per unit volume of the electrolyzed solution required for 90% decolorization (Q(90)) of 0.34-0.37 A h L(-1), %COD removal of ∼100%, specific energy consumption of 18-20 kW h m(-3), and %TOC removal of 32-33%. No loss of the β-PbO2 film is observed during all the experiments. The β-PbO2 films present excellent stability for solutions with pH ≥ 5 ([Pb(2+)] < 0.5 mg L(-1)). Chloroform is the only volatile organic halo compound present in the treated solution under those optimized conditions. Hydroxylated anthraquinone derivatives, aromatic chloramines, and naphthoquinones are formed during the electrolyses. The Ti/β-PbO2 and Ti-Pt/β-PbO2 anodes show significantly better performance than a commercial DSA anode for the electrochemical degradation of the AG 28 dye. The Ti/β-PbO2 anode, prepared as described in this work, is an excellent option for the treatment of textile effluents because of its low cost of fabrication and good performance.
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Affiliation(s)
- Kallyni Irikura
- Departamento de Química, Universidade Federal de São Carlos, C.P. 676, 13560-970 São Carlos, SP, Brazil
| | - Nerilso Bocchi
- Departamento de Química, Universidade Federal de São Carlos, C.P. 676, 13560-970 São Carlos, SP, Brazil.
| | - Romeu C Rocha-Filho
- Departamento de Química, Universidade Federal de São Carlos, C.P. 676, 13560-970 São Carlos, SP, Brazil
| | - Sonia R Biaggio
- Departamento de Química, Universidade Federal de São Carlos, C.P. 676, 13560-970 São Carlos, SP, Brazil
| | - Jesús Iniesta
- Departamento de Química Física, Instituto Universitario de Electroquímica, Facultad de Ciencias, Universidad de Alicante, Apartado de Correos 99, E-03080 Alicante, Spain
| | - Vicente Montiel
- Departamento de Química Física, Instituto Universitario de Electroquímica, Facultad de Ciencias, Universidad de Alicante, Apartado de Correos 99, E-03080 Alicante, Spain
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Hydrogen production and simultaneous photoelectrocatalytic pollutant oxidation using a TiO2/WO3 nanostructured photoanode under visible light irradiation. J Electroanal Chem (Lausanne) 2016. [DOI: 10.1016/j.jelechem.2015.07.034] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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34
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Vasconcelos V, Ponce-de-León C, Nava J, Lanza M. Electrochemical degradation of RB-5 dye by anodic oxidation, electro-Fenton and by combining anodic oxidation–electro-Fenton in a filter-press flow cell. J Electroanal Chem (Lausanne) 2016. [DOI: 10.1016/j.jelechem.2015.07.040] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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35
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Barışçı S, Turkay O, Dimoglo A. Review on Greywater Treatment and Dye Removal from Aqueous Solution by Ferrate (VI). ACS SYMPOSIUM SERIES 2016. [DOI: 10.1021/bk-2016-1238.ch014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- S. Barışçı
- Gebze Technical University, Environmental Engineering Department, 41400, Gebze, Kocaeli, Turkey
| | - O. Turkay
- Gebze Technical University, Environmental Engineering Department, 41400, Gebze, Kocaeli, Turkey
| | - A. Dimoglo
- Gebze Technical University, Environmental Engineering Department, 41400, Gebze, Kocaeli, Turkey
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Zheng Q, Dai Y, Han X. Decolorization of azo dye C.I. Reactive Black 5 by ozonation in aqueous solution: influencing factors, degradation products, reaction pathway and toxicity assessment. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2016; 73:1500-1510. [PMID: 27054721 DOI: 10.2166/wst.2015.550] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In this study, ozonation treatment of C.I. Reactive Black 5 (RB5) was investigated at various operating parameters. The results showed that the aqueous solution initially containing 200 mg/L RB5 was quickly decolorized at pH 8.0 with an ozone dose of 3.2 g/h. Reaction intermediates with m/z 281, 546, 201, 350, 286 and 222 were elucidated using liquid chromatography-mass spectrometry, while sulfate ion, nitrate ion and three carboxylic acids (i.e., oxalic acid, formic acid, and acetic acid) were identified by ion exchange chromatography. Thus, the cleavage of the azo bond and the introduction of OH groups in the corresponding positions were proposed as the predominant reaction pathway. The detachment of sulfonic groups was also commonly observed during the ozonation treatment. The proposed degradation mechanism was confirmed by frontier electron density calculations, suggesting the feasibility of predicting the major events in the whole ozonation process with the computational method. Compared with RB5 degradation, the reduction of total organic carbon (TOC) proceeded much more slowly, and approximately 54% TOC was removed after 4 h of ozonation. Acute toxicity tests with Photobacterium phosphoreum showed that the toxicity of reaction solution was firstly increased and then decreased to a negligible level after 160 min.
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Affiliation(s)
- Qing Zheng
- Department of Chemical and Biological Engineering, Yancheng Institute of Technology, Yancheng 224003, China E-mail: ;
| | - Yong Dai
- Department of Chemical and Biological Engineering, Yancheng Institute of Technology, Yancheng 224003, China E-mail: ;
| | - Xiangyun Han
- Department of Chemical and Biological Engineering, Yancheng Institute of Technology, Yancheng 224003, China E-mail: ;
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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.
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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
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Vasconcelos VM, Ribeiro FL, Migliorini FL, Alves SA, Steter JR, Baldan MR, Ferreira NG, Lanza MR. Electrochemical removal of Reactive Black 5 azo dye using non-commercial boron-doped diamond film anodes. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.07.133] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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del Río AI, García C, Fernández J, Molina J, Bonastre J, Cases F. Electrochemical Treatment of Solutions Containing a Recalcitrant Dye: A Way of Using Dimensionally Adaptable Catalytic Fabrics. Ind Eng Chem Res 2015. [DOI: 10.1021/acs.iecr.5b00590] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ana Isabel del Río
- Departamento
de Ingeniería
Textil y Papelera, Escuela Politécnica Superior de Alcoy, Universitat Politècnica de València, Plaza Ferrándiz y Carbonell,
s/n, 03801 Alcoy, Spain
| | - Carolina García
- Departamento
de Ingeniería
Textil y Papelera, Escuela Politécnica Superior de Alcoy, Universitat Politècnica de València, Plaza Ferrándiz y Carbonell,
s/n, 03801 Alcoy, Spain
| | - Javier Fernández
- Departamento
de Ingeniería
Textil y Papelera, Escuela Politécnica Superior de Alcoy, Universitat Politècnica de València, Plaza Ferrándiz y Carbonell,
s/n, 03801 Alcoy, Spain
| | - Javier Molina
- Departamento
de Ingeniería
Textil y Papelera, Escuela Politécnica Superior de Alcoy, Universitat Politècnica de València, Plaza Ferrándiz y Carbonell,
s/n, 03801 Alcoy, Spain
| | - José Bonastre
- Departamento
de Ingeniería
Textil y Papelera, Escuela Politécnica Superior de Alcoy, Universitat Politècnica de València, Plaza Ferrándiz y Carbonell,
s/n, 03801 Alcoy, Spain
| | - Francisco Cases
- Departamento
de Ingeniería
Textil y Papelera, Escuela Politécnica Superior de Alcoy, Universitat Politècnica de València, Plaza Ferrándiz y Carbonell,
s/n, 03801 Alcoy, Spain
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40
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Gutiérrez-Bouzán C, Pepió M. Interaction between pH and Conductivity in the Indirect Electro-oxidation of Azo Dyes. Ind Eng Chem Res 2014. [DOI: 10.1021/ie502460e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- C. Gutiérrez-Bouzán
- INTEXTER,
Institut d’Investigació Tèxtil i Cooperació
Industrial de Terrassa; UPC, Universitat Politècnica de Catalunya-BarcelonaTech; Colom 15, 08222, Terrassa, Spain
| | - M. Pepió
- Department
of Statistics and Operations Research; ETSEIAT, Escola Tècnica
Superior d’Enginyeries Industrial i Aeronàutica de Terrassa;
UPC, Universitat Politècnica de Catalunya-BarcelonaTech; Colom 11, 08222, Terrassa, Spain
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Bagastyo AY, Batstone DJ, Kristiana I, Escher BI, Joll C, Radjenovic J. Electrochemical treatment of reverse osmosis concentrate on boron-doped electrodes in undivided and divided cell configurations. JOURNAL OF HAZARDOUS MATERIALS 2014; 279:111-116. [PMID: 25048621 DOI: 10.1016/j.jhazmat.2014.06.060] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Revised: 05/30/2014] [Accepted: 06/26/2014] [Indexed: 06/03/2023]
Abstract
An undivided electrolytic cell may offer lower electrochlorination through reduction of chlorine/hypochlorite at the cathode. This study investigated the performance of electrooxidation of reverse osmosis concentrate using boron-doped diamond electrodes in membrane-divided and undivided cells. In both cell configurations, similar extents of chemical oxygen demand and dissolved organic carbon removal were obtained. Continuous formation of chlorinated organic compounds was observed regardless of the membrane presence. However, halogenation of the organic matter did not result in a corresponding increase in toxicity (Vibrio fischeri bioassay performed on extracted samples), with toxicity decreasing slightly until 10AhL(-1), and generally remaining near the initial baseline-toxicity equivalent concentration (TEQ) of the raw concentrate (i.e., ∼2mgL(-1)). The exception was a high range toxicity measure in the undivided cell (i.e., TEQ=11mgL(-1) at 2.4AhL(-1)), which rapidly decreased to 4mgL(-1). The discrepancy between the halogenated organic matter and toxicity patterns may be a consequence of volatile and/or polar halogenated by-products formed in oxidation by OH electrogenerated at the anode. The undivided cell exhibited lower energy compared to the divided cell, 0.25kWhgCOD(-1) and 0.34kWhgCOD(-1), respectively, yet it did not demonstrate any improvement regarding by-products formation.
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Affiliation(s)
- Arseto Y Bagastyo
- Advanced Water Management Centre, The University of Queensland, St Lucia, QLD 4072, Australia; Department of Environmental Engineering, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia
| | - Damien J Batstone
- Advanced Water Management Centre, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Ina Kristiana
- Curtin Water Quality Research Centre, Resources and Chemistry Precinct, Department of Chemistry, Curtin University, Bentley, Perth, WA 6102, Australia
| | - Beate I Escher
- National Research Centre for Environmental Toxicology (Entox), The University of Queensland, Brisbane, QLD 4108, Australia
| | - Cynthia Joll
- Curtin Water Quality Research Centre, Resources and Chemistry Precinct, Department of Chemistry, Curtin University, Bentley, Perth, WA 6102, Australia
| | - Jelena Radjenovic
- Advanced Water Management Centre, The University of Queensland, St Lucia, QLD 4072, Australia.
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Davoudi M, Gholami M, Naseri S, Mahvi AH, Farzadkia M, Esrafili A, Alidadi H. Application of electrochemical reactor divided by cellulosic membrane for optimized simultaneous removal of phenols, chromium, and ammonia from tannery effluents. TOXICOLOGICAL AND ENVIRONMENTAL CHEMISTRY 2014. [DOI: 10.1080/02772248.2014.942311] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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43
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Lin H, Zhang H, Wang X, Wang L, Wu J. Electro-Fenton removal of Orange II in a divided cell: Reaction mechanism, degradation pathway and toxicity evolution. Sep Purif Technol 2014. [DOI: 10.1016/j.seppur.2013.12.010] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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44
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Iglesias O, Fernández de Dios MA, Pazos M, Sanromán MA. Using iron-loaded sepiolite obtained by adsorption as a catalyst in the electro-Fenton oxidation of Reactive Black 5. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2013; 20:5983-5993. [PMID: 23516035 DOI: 10.1007/s11356-013-1610-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2012] [Accepted: 02/28/2013] [Indexed: 06/01/2023]
Abstract
This study explores the possibility of using iron-loaded sepiolite, obtained by recovering iron from polluted water, as a catalyst in the electro-Fenton oxidation of organic pollutants in textile effluents. The removal of iron ions from aqueous solution by adsorption on sepiolite was studied in batch tests at iron concentrations between 100 and 1,000 ppm. Electro-Fenton experiments were carried out in an electrochemical cell with a working volume of 0.15 L, an air flow of 1 L/min, and 3 g of iron-loaded sepiolite. An electric field was applied using a boron-doped diamond anode and a graphite sheet cathode connected to a direct current power supply with a constant potential drop. Reactive Black 5 (100 mg/L) was selected as the model dye. The adsorption isotherms proved the ability of the used adsorbent. The removal of the iron ion by adsorption on sepiolite was in the range of 80-100 % for the studied concentration range. The Langmuir and Freundlich isotherms were found to be applicable in terms of the relatively high regression values. Iron-loaded sepiolite could be used as an effective heterogeneous catalyst for the degradation of organic dyes in the electro-Fenton process. Successive batch processes were performed at optimal working conditions (5 V and pH 2). The results indicate the suitability of the proposed combined process, adsorption to iron remediation followed by the application of the obtained iron-loaded sepiolite to the electro-Fenton technique, to oxidize polluted effluents.
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Affiliation(s)
- O Iglesias
- Department of Chemical Engineering, University of Vigo, Isaac Newton Building, Campus As Lagoas Marcosende, 36310, Vigo, Spain
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45
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Hisaindee S, Meetani M, Rauf M. Application of LC-MS to the analysis of advanced oxidation process (AOP) degradation of dye products and reaction mechanisms. Trends Analyt Chem 2013. [DOI: 10.1016/j.trac.2013.03.011] [Citation(s) in RCA: 178] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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46
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Iglesias O, Rosales E, Pazos M, Sanromán MA. Electro-Fenton decolourisation of dyes in an airlift continuous reactor using iron alginate beads. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2013; 20:2252-2261. [PMID: 22851224 DOI: 10.1007/s11356-012-1100-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2012] [Accepted: 07/16/2012] [Indexed: 06/01/2023]
Abstract
In this study, electro-Fenton dye degradation was performed in an airlift continuous reactor configuration by harnessing the catalytic activity of Fe alginate gel beads. Electro-Fenton experiments were carried out in an airlift reactor with a working volume of 1.5 L, air flow of 1.5 L/min and 115 g of Fe alginate gel beads. An electric field was applied by two graphite bars connected to a direct current power supply with a constant potential drop. In this study, Lissamine Green B and Reactive Black 5 were selected as model dyes. Fe alginate gel beads can be used as an effective heterogeneous catalyst for the degradation of organic dyes in the electro-Fenton process, as they are more efficient than the conventional electrochemical techniques. At optimal working conditions (3 V and pH 2), the continuous process was performed. For both dyes, the degree of decolourisation increases when the residence time augments. Taking into account hydrodynamic and kinetic behaviour, a model to describe the reactor profile was obtained, and the standard deviation between experimental and theoretical data was lower than 6%. The results indicate the suitability of the electro-Fenton technique to oxidise polluted effluents in the presence of Fe alginate gel beads. Moreover, the operation is possible in a continuous airlift reactor, due to the entrapment of iron in the alginate matrix.
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Affiliation(s)
- O Iglesias
- Department of Chemical Engineering, University of Vigo, Isaac Newton Building, Campus As Lagoas, Marcosende, 36310 Vigo, Spain
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47
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Elizalde-González MP, Arroyo-Abad U, García-Díaz E, Brillas E, Sirés I, Dávila-Jiménez MM. Formation of sulfonyl aromatic alcohols by electrolysis of a bisazo reactive dye. Molecules 2012; 17:14377-92. [PMID: 23455611 PMCID: PMC6268216 DOI: 10.3390/molecules171214377] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2012] [Revised: 11/29/2012] [Accepted: 11/29/2012] [Indexed: 11/18/2022] Open
Abstract
Five sulfonyl aromatic alcohols, namely 4-((2-hydroxyethyl)sulfonyl)phenol, 4-((2-(2-((4-hydroxyphenyl)sulfonyl)ethoxy)vinyl)sulfonyl)phenol, 4-(ethylsulfonyl)phenol, 4-(vinylsulfonyl)phenol and 5-((4-aminophenyl)sulfonyl)-2-penten-1-ol were identified by LC-ESI-Qq-TOF-MS as products formed by electrolysis of the bisazo reactive dye Reactive Black 5 (RB5). Since electrolyses were performed in an undivided cell equipped with Ni electrodes in alkaline medium, amines like 4-(2-methoxyethylsulfonyl)benzene-amine (MEBA) with m/z 216 were also suspected to be formed due to the plausible chemical reaction in the bulk or the cathodic reduction of RB5 and its oxidation by-products. Aiming to check this hypothesis, a method was used for the preparation of MEBA with 98% purity, via chemical reduction also of the dye RB5. The logP of the synthesized sulfonyl aromatic compounds was calculated and their logkw values were determined chromatographically. These data were discussed in regard to the relationship between hydrophobicity/lipophilicity and toxicity.
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Affiliation(s)
- María P. Elizalde-González
- Centro de Química, Instituto de Ciencias, Universidad Autónoma de Puebla, CU, San Claudio s/n, Edif 103H, 72570 Puebla, Pue., Mexico
| | - Uriel Arroyo-Abad
- Centro de Química, Instituto de Ciencias, Universidad Autónoma de Puebla, CU, San Claudio s/n, Edif 103H, 72570 Puebla, Pue., Mexico
| | - Esmeralda García-Díaz
- Facultad de Ciencias Químicas, Universidad Autónoma de Puebla, CU, San Claudio s/n, Edif 105H, 72570 Puebla, Pue., Mexico
| | - Enric Brillas
- 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
| | - 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
| | - Martín M. Dávila-Jiménez
- Facultad de Ciencias Químicas, Universidad Autónoma de Puebla, CU, San Claudio s/n, Edif 105H, 72570 Puebla, Pue., Mexico
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +52-222-229-5525; Fax: +52-222-229-5551
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