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Farinelli G, Giannakis S, Schaub A, Kohantorabi M, Pulgarin C. Acids from fruits generate photoactive Fe-complexes, enhancing solar disinfection of water (SODIS): A systematic study of the novel "fruto-Fenton" process, effective over a wide pH range (4 - 9). WATER RESEARCH 2024; 255:121518. [PMID: 38554635 DOI: 10.1016/j.watres.2024.121518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 03/06/2024] [Accepted: 03/23/2024] [Indexed: 04/02/2024]
Abstract
This study aimed to enhance solar disinfection (SODIS) by the photo-Fenton process, operated at natural pH, through the re-utilization of fruit wastes. For this purpose, pure organic acids present in fruits and alimentary wastes were tested and compared with synthetic complexing agents. Owing to solar light, complexes between iron and artificial or natural chelators can be regenerated through ligand-to-metal charge transfer (LMCT) during disinfection. The target complexes were photoactive under solar light, and the Fe:Ligand ratios for ex situ prepared iron complexes were assessed, achieving a balance between iron solubilization and competition with bacteria as a target for oxidizing species. In addition, waste extracts containing natural acidic ligands were an excellent raw material for our disinfection enhancement purposes. Indeed, lemon and orange juice or their peel infusions turned out to be more efficient than commercially available organic acids, leading to complete inactivation in less than 1 h by this novel "fruto-Fenton" process, i.e. in the presence of a fruit-derived ligand, Fe(II) and H2O2. Finally, its application in Lake Leman water and in situ complex generation led to effective bacterial inactivation, even in mildly alkaline surface waters. This work proposes interesting SODIS and fruit-mediated photo-Fenton enhancements for bacterial inactivation in resource-poor contexts and/or under the prism of circular economy.
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Affiliation(s)
- Giulio Farinelli
- Institut Européen des Membranes, IEM-UMR 5635, Université de Montpellier, ENSCM, CNRS 34090, Montpellier, France.
| | - Stefanos Giannakis
- Universidad Politécnica de Madrid, E.T.S. de Ingenieros de Caminos, Canales y Puertos, Departamento de Ingeniería Civil: Hidráulica, Energía y Medio Ambiente, Environment, Coast and Ocean Research Laboratory (ECOREL-UPM), c/Profesor Aranguren s/n 28040, Madrid, Spain.
| | - Aline Schaub
- School of Basic Sciences (SB), Institute of Chemical Science and Engineering (ISIC), Group of Advanced Oxidation Processes (GPAO), École Polytechnique Fédérale de Lausanne (EPFL), Station 6 CH-1015, Lausanne, Switzerland
| | - Mona Kohantorabi
- Center for X-ray and Nano Science (CXNS), Deutsches Elektronen-Synchrotron (DESY), Notkestr. 85, Hamburg 22607, Germany
| | - Cesar Pulgarin
- Universidad Politécnica de Madrid, E.T.S. de Ingenieros de Caminos, Canales y Puertos, Departamento de Ingeniería Civil: Hidráulica, Energía y Medio Ambiente, Environment, Coast and Ocean Research Laboratory (ECOREL-UPM), c/Profesor Aranguren s/n 28040, Madrid, Spain; Environmental Remediation and Biocatalysis Group, Institute of Chemistry, Faculty of Exact and Natural Sciences, Universidad de Antioquia, Calle, 70 No. 52-21, Medellín, Colombia; Colombian Academy of Exact, Physical and Natural Sciences, Carrera 28 A No. 39A-63, Bogotá, Colombia
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2
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Sun Z, Zhou J, Zhang H, Liu Z, Tao S, Xu J. Enhanced photodegradation of p-arsanilic acid by oxalate in goethite heterogeneous system under UVA irradiation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:36207-36216. [PMID: 37594713 DOI: 10.1007/s11356-023-29289-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 08/08/2023] [Indexed: 08/19/2023]
Abstract
The widespread used organoarsenicals have drawn attention for decades due to their potential environment risks. In this study, a heterogeneous system of goethite/oxalate irradiated using UVA light (λ = 365 nm) was applied for the removal of ASA, a kind of organoarsenicals used in animal feeding operations as additives, from the aqueous phase through photodegradation. Results showed that the presence of 5 mM of oxalate significantly enhanced the photodegradation efficiency of ASA in the 0.1 g/L of goethite suspended system from 28 to ~100% within 180 min reaction at pH 5. Acid conditions favored the photoreaction rate, compared with neutral and basic conditions. This reaction process was also influenced by the initial concentration of oxalate and ASA. Furthermore, the mechanism study was conducted by quenching experiments and revealed the important roles of ·OH in the degradation of ASA in the goethite/oxalate/UVA system. By analyzing the reaction products, both inorganic arsenic (As(III) and As(V)) and ammonia were detected during the photodegradation of ASA. These findings help to gain a better understanding of the geochemical behavior of ASA in surface water and can also provide a potential treatment method for the organoarsenicals contaminated water.
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Affiliation(s)
- Zuyou Sun
- State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan, Hubei, 430072, People's Republic of China
- Hubei Key Laboratory of Water System Science for Sponge City Construction, Wuhan University, Wuhan, 430072, China
| | - Jiali Zhou
- State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan, Hubei, 430072, People's Republic of China
- Hubei Key Laboratory of Water System Science for Sponge City Construction, Wuhan University, Wuhan, 430072, China
| | - Hui Zhang
- State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan, Hubei, 430072, People's Republic of China
- Hubei Key Laboratory of Water System Science for Sponge City Construction, Wuhan University, Wuhan, 430072, China
| | - Zufan Liu
- State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan, Hubei, 430072, People's Republic of China
- Hubei Key Laboratory of Water System Science for Sponge City Construction, Wuhan University, Wuhan, 430072, China
| | - Shiyong Tao
- State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan, Hubei, 430072, People's Republic of China
- Hubei Key Laboratory of Water System Science for Sponge City Construction, Wuhan University, Wuhan, 430072, China
| | - Jing Xu
- State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan, Hubei, 430072, People's Republic of China.
- Hubei Key Laboratory of Water System Science for Sponge City Construction, Wuhan University, Wuhan, 430072, China.
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3
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West CP, Morales AC, Ryan J, Misovich MV, Hettiyadura APS, Rivera-Adorno F, Tomlin JM, Darmody A, Linn BN, Lin P, Laskin A. Molecular investigation of the multi-phase photochemistry of Fe(III)-citrate in aqueous solution. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2023; 25:190-213. [PMID: 35634912 DOI: 10.1039/d1em00503k] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Iron (Fe) is ubiquitous in nature and found as FeII or FeIII in minerals or as dissolved ions Fe2+ or Fe3+ in aqueous systems. The interactions of soluble Fe have important implications for fresh water and marine biogeochemical cycles, which have impacts on global terrestrial and atmospheric environments. Upon dissolution of FeIII into natural aquatic systems, organic carboxylic acids efficiently chelate FeIII to form [FeIII-carboxylate]2+ complexes that undergo a wide range of photochemistry-induced radical reactions. The chemical composition and photochemical transformations of these mixtures are largely unknown, making it challenging to estimate their environmental impact. To investigate the photochemical process of FeIII-carboxylates at the molecular level, we conduct a comprehensive experimental study employing UV-visible spectroscopy, liquid chromatography coupled to photodiode array and high-resolution mass spectrometry detection, and oil immersion flow microscopy. In this study, aqueous solutions of FeIII-citrate were photolyzed under 365 nm light in an experimental setup with an apparent quantum yield of (φ) ∼0.02, followed by chemical analyses of reacted mixtures withdrawn at increment time intervals of the experiment. The apparent photochemical reaction kinetics of Fe3+-citrates (aq) were expressed as two generalized consecutive reactions of with the experimental rate constants of j1 ∼ 0.12 min-1 and j2 ∼ 0.05 min-1, respectively. Molecular characterization results indicate that R and I consist of both water-soluble organic and Fe-organic species, while P compounds are a mixture of water-soluble and colloidal materials. The latter were identified as Fe-carbonaceous colloids formed at long photolysis times. The carbonaceous content of these colloids was identified as unsaturated organic species with low oxygen content and carbon with a reduced oxidation state, indicative of their plausible radical recombination mechanism under oxygen-deprived conditions typical for the extensively photolyzed mixtures. Based on the molecular characterization results, we discuss the comprehensive reaction mechanism of FeIII-citrate photochemistry and report on the formation of previously unexplored colloidal reaction products, which may contribute to atmospheric and terrestrial light-absorbing materials in aquatic environments.
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Affiliation(s)
- Christopher P West
- Department of Chemistry, Purdue University, West Lafayette, IN, 47906, USA.
| | - Ana C Morales
- Department of Chemistry, Purdue University, West Lafayette, IN, 47906, USA.
| | - Jackson Ryan
- Department of Chemistry, Purdue University, West Lafayette, IN, 47906, USA.
| | - Maria V Misovich
- Department of Chemistry, Purdue University, West Lafayette, IN, 47906, USA.
| | | | | | - Jay M Tomlin
- Department of Chemistry, Purdue University, West Lafayette, IN, 47906, USA.
| | - Andrew Darmody
- Department of Aeronautics and Aerospace Engineering, Purdue University, West Lafayette, IN, USA
| | - Brittany N Linn
- Department of Chemistry, Purdue University, West Lafayette, IN, 47906, USA.
| | - Peng Lin
- Department of Chemistry, Purdue University, West Lafayette, IN, 47906, USA.
| | - Alexander Laskin
- Department of Chemistry, Purdue University, West Lafayette, IN, 47906, USA.
- Department of Earth, Atmospheric & Planetary Sciences, Purdue University, West Lafayette, IN, USA
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4
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Wu Y, Guo J, Zhang Y, Xu J, Pozdnyakov IP, Li J, Wu F. Aquatic photochemistry of Cu(II) in the presence of As(III): Mechanistic insights from Cu(III) production and As(III) oxidation under neutral pH conditions. WATER RESEARCH 2022; 227:119344. [PMID: 36402098 DOI: 10.1016/j.watres.2022.119344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 10/27/2022] [Accepted: 11/07/2022] [Indexed: 06/16/2023]
Abstract
Surface complexation between arsenite (As(III)) and colloidal metal hydroxides plays an important role not only in the immobilization and oxidation of As(III) but also in the cycle of the metal and the fate of their ligands. However, the photochemical processes between Cu(II) and As(III) are not sufficiently understood. In this work, the photooxidation of As(III) in the presence of Cu(II) under neutral pH conditions was investigated in water containing 200 μM Cu(II) and 5 μM As(III) under simulated solar irradiation consisting of UVB light. The results confirmed the complexation between As(III) and Cu(II) hydroxides, and the photooxidation of As(III) is attributed to the ligand-to-metal charge transfer (LMCT) process and Cu(III) oxidation. The light-induced LMCT process results in simultaneous As(III) oxidation and Cu(II) reduction, then produced Cu(I) undergoes autooxidation with O2 to produce O2•⁻ and H2O2, and further the Cu(I)-Fenton reaction produces Cu(III) that can oxidize As(III) efficiently (kCu(III)+As(III) = 1.02 × 109 M-1 s-1). The contributions from each pathway (ρrCu(II)-As(III)+hv = 0.62, ρrCu(III)+As(III) = 0.38) were obtained using kinetic analysis and simulation. Sunlight experiments showed that the pH range of As(III) oxidation could be extended to weak acidic conditions in downstream water from acid mine drainage (AMD). This work helps to understand the environmental chemistry of Cu(II) and As(III) regarding their interaction and photo-induced redox reactions.
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Affiliation(s)
- Yi Wu
- Hubei Key Lab of Biomass Resource Chemistry and Environmental Biotechnology, School of Resources and Environmental Science, Wuhan University, Wuhan 430079, PR China
| | - Juntao Guo
- Hubei Key Lab of Biomass Resource Chemistry and Environmental Biotechnology, School of Resources and Environmental Science, Wuhan University, Wuhan 430079, PR China
| | - Yihui Zhang
- Hubei Key Lab of Biomass Resource Chemistry and Environmental Biotechnology, School of Resources and Environmental Science, Wuhan University, Wuhan 430079, PR China
| | - Jing Xu
- State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, 430072, PR China.
| | - Ivan P Pozdnyakov
- V.V. Voevodsky Institute of Chemical Kinetics and Combustion, 3 Institutskaya str., 630090, Novosibirsk, Russian Federation; Novosibirsk State University, 2 Pirogova St., 630090, Novosibirsk, Russian Federation
| | - Jinjun Li
- Hubei Key Lab of Biomass Resource Chemistry and Environmental Biotechnology, School of Resources and Environmental Science, Wuhan University, Wuhan 430079, PR China
| | - Feng Wu
- Hubei Key Lab of Biomass Resource Chemistry and Environmental Biotechnology, School of Resources and Environmental Science, Wuhan University, Wuhan 430079, PR China.
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5
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Tu YN, Li C, Shi F, Li Y, Zhang Z, Liu H, Tian S. Enhancive and inhibitory effects of copper complexation on triplet dissolved black carbon-sensitized photodegradation of organic micropollutants. CHEMOSPHERE 2022; 307:135968. [PMID: 35964723 DOI: 10.1016/j.chemosphere.2022.135968] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 07/20/2022] [Accepted: 08/02/2022] [Indexed: 06/15/2023]
Abstract
Excited-triplet dissolved black carbon (DBC) was deemed as a significant reactive intermediate in the phototransformation of environmental micropollutants, but the impacts of concomitant metal ions on photochemical behavior of excited-triplet DBC (3DBC*) are poorly understood. Here, the photolytic kinetics of sulfadiazine and carbamazepine induced by 3DBC* involving Cu2+ was explored. The presence of Cu2+ reduced the 3DBC*-induced photodegradation rate of sulfadiazine; whereas for carbamazepine, Cu2+ enhanced 3DBC*-induced photodegradation. Cu(II)-DBC complex was formed due to the decreasing fluorescence intensities of DBC in the presence of Cu2+. Cu2+ complexation caused the decrease of 3DBC* steady-state concentrations, which markedly reduced 3DBC*-induced photodegradation rate of sulfadiazine due to its high triplet reactivity. Kinetic model showed that 3DBC* quenching rate by Cu2+ was 7.98 × 109 M-1 s-1. Cu2+ complexation can also enhance the electron transfer ability, thereby producing more ∙OH in Cu(II)-DBC complex, which explains the promoting effect of Cu2+ complexation on carbamazepine photodegradation in view of its low triplet reaction rate. These indicate that 3DBC* reactivity differences of organic micropollutants may explain their photodegradation kinetics differences in DBC system with/without Cu2+, which was supported by the linearized relationship between the photodegradation rate ratios of ten micropollutants with/without Cu2+ and their triplet reaction activity.
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Affiliation(s)
- Yi-Na Tu
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan, 650500, China
| | - Chen Li
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan, 650500, China
| | - Fengli Shi
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan, 650500, China
| | - Yingjie Li
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan, 650500, China.
| | - Zhiyu Zhang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan, 650500, China
| | - Huaying Liu
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan, 650500, China.
| | - Senlin Tian
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan, 650500, China
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6
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Zheng Y, Yu L, Yan Y, Li H, Yu Q, Jiao B, Li D. Rapid Cr(VI) reduction structure in chromium contaminated soil: The UV-assisted electrokinetic circulation of background iron. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 822:153508. [PMID: 35101496 DOI: 10.1016/j.scitotenv.2022.153508] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 01/11/2022] [Accepted: 01/25/2022] [Indexed: 06/14/2023]
Abstract
Substantially decreasing the severe hazards connected with the toxic Cr(VI), developing effective reduction remediation strategies may be crucial under favorable economic conditions for the contaminated soil containing Cr(VI) to protect human health. Several typical enhancers (phosphate, fulvic acid, citric acid) were used to test electrokinetic remediation (EKR) coupled with UV radiation-induced photochemical reduction for contaminated soil containing Cr(VI). The added citrate, while improving the Cr(VI) electromigration, worked as the ultimate sacrificial electron donors, with the dissolved soil background Fe(III) as electron shuttle, to Cr(VI) rapid reduction. The dissolved soil background Fe(III) convert into Fe(II) ions through the UV radiation-induced ligand-metal charge transfers reaction, which constituted a novel electrokinetic circulation reduction pathway for the elimination of surface-bound/dissolved Cr(VI) (difficult to electromigration) in the near-anodic soil layers. More than 80% dissolved and surface-bound Cr(VI) was eliminated from the soil. In particular, the dissolved and surface-bound Cr(VI) was enhanced by more than 62.37% removal in near-anodic soil layers compared to conventional citric acid-enhanced EKR and provided no extra cost other than UV radiation. This configuration may be a cost-effective and feasible remediation design in the future for the in-situ Cr(VI) reduction of contaminated sites.
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Affiliation(s)
- Yi Zheng
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; College of Resource and Safety Engineering, Chongqing University, Chongqing 400044, China
| | - Lin Yu
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; College of Resource and Safety Engineering, Chongqing University, Chongqing 400044, China
| | - Yujie Yan
- Engineering Research Center of Biofilm Water Purification and Utilization Technology, Ministry of Education, Anhui University of Technology, Maanshan, Anhui 243002, PR China
| | - Huilin Li
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; College of Resource and Safety Engineering, Chongqing University, Chongqing 400044, China
| | - Qiu Yu
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; College of Resource and Safety Engineering, Chongqing University, Chongqing 400044, China
| | - Binquan Jiao
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; College of Resource and Safety Engineering, Chongqing University, Chongqing 400044, China
| | - Dongwei Li
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; College of Resource and Safety Engineering, Chongqing University, Chongqing 400044, China.
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7
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Wang L, Huang Z, Yang X, Rogée L, Huang X, Zhang X, Lau SP. Review on optofluidic microreactors for photocatalysis. REV CHEM ENG 2022. [DOI: 10.1515/revce-2021-0068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Four interrelated issues have been arising with the development of modern industry, namely environmental pollution, the energy crisis, the greenhouse effect and the global food crisis. Photocatalysis is one of the most promising methods to solve them in the future. To promote high photocatalytic reaction efficiency and utilize solar energy to its fullest, a well-designed photoreactor is vital. Photocatalytic optofluidic microreactors, a promising technology that brings the merits of microfluidics to photocatalysis, offer the advantages of a large surface-to-volume ratio, a short molecular diffusion length and high reaction efficiency, providing a potential method for mitigating the aforementioned crises in the future. Although various photocatalytic optofluidic microreactors have been reported, a comprehensive review of microreactors applied to these four fields is still lacking. In this paper, we review the typical design and development of photocatalytic microreactors in the fields of water purification, water splitting, CO2 fixation and coenzyme regeneration in the past few years. As the most promising tool for solar energy utilization, we believe that the increasing innovation of photocatalytic optofluidic microreactors will drive rapid development of related fields in the future.
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Affiliation(s)
- Lei Wang
- Department of Bioengineering , State Key Laboratory of Biobased Material and Green Papermaking, School of Food Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences) , Jinan 250353 , China
| | - Ziyu Huang
- Department of Bioengineering , State Key Laboratory of Biobased Material and Green Papermaking, School of Food Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences) , Jinan 250353 , China
| | - Xiaohui Yang
- Department of Bioengineering , State Key Laboratory of Biobased Material and Green Papermaking, School of Food Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences) , Jinan 250353 , China
| | - Lukas Rogée
- Department of Applied Physics , The Hong Kong Polytechnic University , Hong Kong , P.R. China
| | - Xiaowen Huang
- Department of Bioengineering , State Key Laboratory of Biobased Material and Green Papermaking, School of Food Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences) , Jinan 250353 , China
| | - Xuming Zhang
- Department of Applied Physics , The Hong Kong Polytechnic University , Hong Kong , P.R. China
| | - Shu Ping Lau
- Department of Applied Physics , The Hong Kong Polytechnic University , Hong Kong , P.R. China
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8
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Intisar A, Ramzan A, Sawaira T, Kareem AT, Hussain N, Din MI, Bilal M, Iqbal HMN. Occurrence, toxic effects, and mitigation of pesticides as emerging environmental pollutants using robust nanomaterials - A review. CHEMOSPHERE 2022; 293:133538. [PMID: 34998849 DOI: 10.1016/j.chemosphere.2022.133538] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 12/23/2021] [Accepted: 01/03/2022] [Indexed: 02/08/2023]
Abstract
Increasing demand of food and agriculture is leading us towards the increasing use and introduction of pesticides to the environment. The upright increase of pesticides in water and associated adverse effects have become a great point of concern to develop proficient methods for their mitigation from water. Various different methods have been traditionally employed for this purpose. Recently, nanotechnology has turned out to be the field of prodigious interest for this purpose, and various specific methods were developed and employed to remove pesticides from water. In this study, nanotechnological methods such as adsorption and degradation have been thoroughly discussed along with their applications and limitations where different types of nanoparticles, nanocomposites, nanotubes, and nanomembranes have played a vital role. However, in this study the most commonly adopted method of adsorption is considered to be the better technique due to its low cost, efficiency, and ease of operation. The adsorption kinetic models were described to explain the efficiency of the nano-adrsorbants in order to evaluate the mass transfer processes. However, various degradation methodologies including photocatalysis and catalytic reduction have also been elaborated. Numerous robust metal, metal oxide and functionalized magnetic nanomaterials have been emphasized, categorized, and compared for the removal of pesticides from water. Additionally, current challenges faced by researchers and future directions have also been provided.
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Affiliation(s)
- Azeem Intisar
- School of Chemistry, University of the Punjab, 54590, Pakistan
| | - Arooj Ramzan
- School of Chemistry, University of the Punjab, 54590, Pakistan
| | - Tehzeeb Sawaira
- School of Chemistry, University of the Punjab, 54590, Pakistan
| | - Ama Tul Kareem
- School of Chemistry, University of the Punjab, 54590, Pakistan
| | - Nazim Hussain
- Center for Applied Molecular Biology (CAMB), University of the Punjab Lahore, Pakistan
| | | | - Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, 223003, China.
| | - Hafiz M N Iqbal
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey, 64849, Mexico.
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9
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Liu H, Zhang Z, Tu YN, Li Y, Lei Y, Tian S. Dual roles of Cu 2+ complexation with dissolved organic matter on the photodegradation of trace organic pollutants: Triplet- and OH-induced reactions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 815:152934. [PMID: 35007586 DOI: 10.1016/j.scitotenv.2022.152934] [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: 11/05/2021] [Revised: 12/17/2021] [Accepted: 01/02/2022] [Indexed: 06/14/2023]
Abstract
The triplet excited state of dissolved organic matter (3DOM⁎) is highly effective in the photodegradation of a broad spectrum of trace organic pollutants (TOPs), and its photoactivity is affected by concomitant metal ions in surface waters. However, the impact of environmental metal ions on the 3DOM⁎-induced photodegradation of TOPs has not been systemically explored. Herein, we investigated the effect of environmental Cu2+ on the 3DOM⁎-induced photodegradation kinetics of 16 TOPs. A fluorescence quenching experiment showed that a Cu(II)-DOM complex was formed. For the TOPs with stronger electron-donating groups (triplet-labile moieties, e.g., phenols and anilines), Cu2+ complexation notably inhibited 3DOM⁎-induced photodegradation. This may be ascribed to the decrease of 3DOM⁎ steady-state concentration because Cu2+ complexation reduces its formation rates and enhances scavenging rates tested by sorbic acid isomerization experiment. Meanwhile, it was found that Cu2+ complexation facilitated the photolysis of refractory TOPs (lower triplet reactivity) because of enhanced electron transfer between DOM and Cu(II), causing photoinduced OH formation. These findings implied that 3DOM⁎ reactivity differences in TOPs could affect the photodegradation rates in the complex system, which was confirmed via a linear correlation of photodegradation rate ratios for 16 TOPs induced by 3DOM⁎ in the presence/absence of Cu2+ with their 3DOM⁎ reactivity. These findings helped to improve our understanding of the photochemical reactivity of 3DOM⁎ in natural waters, especially the effects of environmentally concomitant metal ions.
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Affiliation(s)
- Huaying Liu
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, Yunnan, China
| | - Zhiyu Zhang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, Yunnan, China
| | - Yi-Na Tu
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, Yunnan, China
| | - Yingjie Li
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, Yunnan, China.
| | - Yajie Lei
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, Yunnan, China
| | - Senlin Tian
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, Yunnan, China.
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10
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Hassan QU, Channa AI, Zhai QG, Zhu G, Gao Y, Ali N, Bilal M. Recent advancement in Bi 5O 7I-based nanocomposites for high performance photocatalysts. CHEMOSPHERE 2022; 288:132668. [PMID: 34718019 DOI: 10.1016/j.chemosphere.2021.132668] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 10/21/2021] [Accepted: 10/23/2021] [Indexed: 06/13/2023]
Abstract
Bi5O7I belongs to the family of bismuth oxyhalides (BiOX, X = Cl, Br, I), having a unique layered structure with an internal electrostatic field that promotes the separation and transfer of photo-generated charge carriers. Interestingly, Bi5O7I exhibits higher thermal stability compared to its other BiOX member compounds and absorption spectrum extended to the visible region. Bi5O7I has demonstrated applications in diverse fields such as photocatalytic degradation of various organic pollutants, marine antifouling, etc. Unfortunately, owing to its wide band gap of ∼2.9 eV, its absorption lies mainly in the ultraviolet region, and a tiny portion of absorption lies in the visible region. Due to limited absorption, the photocatalytic performance of pure Bi5O7I is still facing challenges. In order to reduce the band gap and increase the light absorption capability of Bi5O7I, doping and formation of heterostructure strategies have been employed, which showed promising results in the photocatalytic performance. In addition, the plasmonic heterostructures of Bi5O7I were also developed to further boost the efficiency of Bi5O7I as a photocatalyst. Here, in this review article, we present such recent efforts made for the advanced development of Bi5O7I regarding its synthesis, properties and applications. The strategies for photocatalytic performance enhancement have been discussed in detail. Moreover, in the conclusion section, we have presented the current challenges and discussed possible prospective developments in this field.
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Affiliation(s)
- Qadeer Ul Hassan
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, People's Republic of China; Institute for Advanced Study, Shenzhen University, Nanhai Avenue 3688, Shenzhen, 518060, People's Republic of China; College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, People's Republic of China
| | - Ali Imran Channa
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 610054, PR China
| | - Quan-Guo Zhai
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, People's Republic of China.
| | - Gangqiang Zhu
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an, 710119, People's Republic of China.
| | - Yongxiang Gao
- Institute for Advanced Study, Shenzhen University, Nanhai Avenue 3688, Shenzhen, 518060, People's Republic of China
| | - Nisar Ali
- Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, National & Local Joint Engineering Research, Center for Deep Utilization Technology of Rock-salt Resource, Faculty of Chemical Engineering, Huaiyin Institute of Technology, Huai'an, 223003, China
| | - Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, 223003, China
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11
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López-Vinent N, Cruz-Alcalde A, Lai C, Giménez J, Esplugas S, Sans C. Role of sunlight and oxygen on the performance of photo-Fenton process at near neutral pH using organic fertilizers as iron chelates. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 803:149873. [PMID: 34525738 DOI: 10.1016/j.scitotenv.2021.149873] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 08/16/2021] [Accepted: 08/20/2021] [Indexed: 06/13/2023]
Abstract
Nowadays, reaction mechanisms of photo-Fenton process with chelated iron are not yet clearly defined. In this study, five organic fertilizers were used as iron complexes to investigate the role of sunlight and oxygen in photo-Fenton at near neutral pH. UV absorbance and stability constant of each selected iron chelate is different, and this work demonstrates that these parameters affect the reaction mechanisms in SMX degradation. Irradiation experiments without H2O2 revealed that only EDDS-Fe and DTPA-Fe achieved SMX degradation, but different iron release. These results, together with soluble oxygen free experiments, allowed the proposal of complementary reaction mechanisms to those of the classical photo-Fenton. The proposed mechanisms start through the potential photoexcitation of the iron complex, followed by subsequent oxygen-mediated hydroxyl radical generation reactions that are different for EDDS-Fe and DTPA-Fe. Moreover, irradiation experiments using EDTA-Fe and HEDTA-Fe had negligible SMX degradation despite iron release was observed, evidencing the differences between iron chelates.
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Affiliation(s)
- Núria López-Vinent
- Department of Chemical Engineering and Analytical Chemistry, Faculty of Chemistry, University of Barcelona, C/Martí i Franqués 1, 08028 Barcelona, Spain.
| | - Alberto Cruz-Alcalde
- Department of Chemical Engineering and Analytical Chemistry, Faculty of Chemistry, University of Barcelona, C/Martí i Franqués 1, 08028 Barcelona, Spain; Institute of Environmental Assessment and Water Research - Spanish National Research Council (IDAEA-CSIC), C/Jordi Girona 18-26, 08034 Barcelona, Spain
| | - Claudia Lai
- Department of Chemical Engineering and Analytical Chemistry, Faculty of Chemistry, University of Barcelona, C/Martí i Franqués 1, 08028 Barcelona, Spain
| | - Jaime Giménez
- Department of Chemical Engineering and Analytical Chemistry, Faculty of Chemistry, University of Barcelona, C/Martí i Franqués 1, 08028 Barcelona, Spain
| | - Santiago Esplugas
- Department of Chemical Engineering and Analytical Chemistry, Faculty of Chemistry, University of Barcelona, C/Martí i Franqués 1, 08028 Barcelona, Spain
| | - Carme Sans
- Department of Chemical Engineering and Analytical Chemistry, Faculty of Chemistry, University of Barcelona, C/Martí i Franqués 1, 08028 Barcelona, Spain
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12
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Olasunkanmi LO, Govender PP. Theoretical probe of absorption and fluorescence emission characteristics of highly luminescent ReL(CO)3X (L = 12H-indazolo[5,6-f][1,10]phenanthroline and X = F, Cl, Br, I): a DFT/TD-DFT study. Mol Phys 2021. [DOI: 10.1080/00268976.2021.2018062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Lukman O. Olasunkanmi
- Department of Chemical Sciences, University of Johannesburg Johannesburg, South Africa
- Department of Chemistry, Faculty of Science, Obafemi Awolowo University, Ile-Ife, Nigeria
| | - Penny P. Govender
- Department of Chemical Sciences, University of Johannesburg Johannesburg, South Africa
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13
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Seraghni N, Dekkiche B, Debbache N, Belattar S, Mameri Y, Belaidi S, Sehili T. Photodegradation of cresol red by a non-iron Fenton process under UV and sunlight irradiation: Effect of the copper(II)-organic acid complex activated by H2O2. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2021.113485] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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14
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Lin CJ, Wang PY, Lin YL, Chang ST, Hsu CS, Wu SP, Wu CH. Nonpolar Side Chains Affect the Photochemical Redox Reactions of Copper(II)-Amino Acid Complexes in Aqueous Solutions. ACS OMEGA 2021; 6:28194-28202. [PMID: 34723017 PMCID: PMC8552463 DOI: 10.1021/acsomega.1c04277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 10/01/2021] [Indexed: 06/13/2023]
Abstract
Photochemical redox reactions of Cu(II) complexes of eight amino acid ligands (L) with nonpolar side chains have been systematically investigated in deaerated aqueous solutions. Under irradiation at 313 nm, the intramolecular carboxylate-to-Cu(II) charge transfer within Cu(II)-amino acid complexes leads to Cu(I) formation and the concomitant decomposition of amino acids. All amino acid systems studied here can produce ammonia and aldehydes except proline. For the 1:1 Cu(II) complex species (CuL), the Cu(I) quantum yields at 313 nm (ΦCu(I),CuL) vary by fivefold and in the sequence (0.10 M ionic strength at 25 °C) alanine (0.094) > valine (0.059), leucine (0.059), isoleucine (0.056), phenylalanine (0.057) > glycine (0.052) > methionine (0.032) > proline (0.019). This trend can be rationalized by considering the stability of the carbon-centered radicals and the efficient depopulation of the photoexcited state, both of which are dependent on the side-chain structure. For the 1:2 Cu(II) complex species (CuL2), the Cu(I) quantum yields exhibit a similar trend and are always less than those for CuL. The photoformation rates of ammonia, Cu(I), and aldehydes are in the ratio of 1:2.0 ± 0.2:0.7 ± 0.2, which supports the proposed mechanism. This study suggests that the direct phototransformation of Cu(II)-amino acid complexes may contribute to the bioavailable nitrogen for aquatic microorganisms and cause biological damage on cell surfaces in sunlit waters.
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Affiliation(s)
- Chen-Jui Lin
- Department
of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Po-Yen Wang
- Department
of Civil Engineering, Widener University, Chester, Pennsylvania 19013, United States
| | - Yi-Liang Lin
- Department
of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Sheng-Te Chang
- Department
of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Chao-Sheng Hsu
- Department
of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Shu-Pao Wu
- Department
of Applied Chemistry, National Yang Ming
Chiao Tung University, Hsinchu 30010, Taiwan
| | - Chien-Hou Wu
- Department
of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan
- Institute
of Analytical and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan
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15
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Abderrazak Y, Bhattacharyya A, Reiser O. Durch sichtbares Licht induzierte Homolyse unedler, gut verfügbarer Metallsubstratkomplexe: Eine komplementäre Aktivierungsstrategie in der Photoredoxkatalyse. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202100270] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Youssef Abderrazak
- Institut für Organische Chemie Universität Regensburg Universitätsstraße 31 93053 Regensburg Deutschland
| | - Aditya Bhattacharyya
- Institut für Organische Chemie Universität Regensburg Universitätsstraße 31 93053 Regensburg Deutschland
| | - Oliver Reiser
- Institut für Organische Chemie Universität Regensburg Universitätsstraße 31 93053 Regensburg Deutschland
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16
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Abderrazak Y, Bhattacharyya A, Reiser O. Visible-Light-Induced Homolysis of Earth-Abundant Metal-Substrate Complexes: A Complementary Activation Strategy in Photoredox Catalysis. Angew Chem Int Ed Engl 2021; 60:21100-21115. [PMID: 33599363 PMCID: PMC8519011 DOI: 10.1002/anie.202100270] [Citation(s) in RCA: 110] [Impact Index Per Article: 36.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 02/17/2021] [Indexed: 01/16/2023]
Abstract
The mainstream applications of visible-light photoredox catalysis predominately involve outer-sphere single-electron transfer (SET) or energy transfer (EnT) processes of precious metal RuII or IrIII complexes or of organic dyes with low photostability. Earth-abundant metal-based Mn Ln -type (M=metal, Ln =polydentate ligands) complexes are rapidly evolving as alternative photocatalysts as they offer not only economic and ecological advantages but also access to the complementary inner-sphere mechanistic modes, thereby transcending their inherent limitations of ultrashort excited-state lifetimes for use as effective photocatalysts. The generic process, termed visible-light-induced homolysis (VLIH), entails the formation of suitable light-absorbing ligated metal-substrate complexes (Mn Ln -Z; Z=substrate) that can undergo homolytic cleavage to generate Mn-1 Ln and Z. for further transformations.
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Affiliation(s)
- Youssef Abderrazak
- Institut für Organische Chemie, Universität Regensburg, Universitätsstrasse 31, 93053, Regensburg, Germany
| | - Aditya Bhattacharyya
- Institut für Organische Chemie, Universität Regensburg, Universitätsstrasse 31, 93053, Regensburg, Germany
| | - Oliver Reiser
- Institut für Organische Chemie, Universität Regensburg, Universitätsstrasse 31, 93053, Regensburg, Germany
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17
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Gong H, Cheng C, Li M, Yang S, Zhou Q, Zhong QE, Zhang Y, Xie Y, Zhou Z. The enhanced mixing states of oxalate with metals in single particles in Guangzhou, China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 783:146962. [PMID: 33866183 DOI: 10.1016/j.scitotenv.2021.146962] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 04/01/2021] [Accepted: 04/01/2021] [Indexed: 06/12/2023]
Abstract
Recently, internal mixing states of oxalate with metals in single particles have been reported from field studies, yet the role of metals in the formation processes of oxalate remains unclear due to the diversity of chemical components and complex atmospheric environment. In this study, the mixing states of oxalate with five metals, including zinc (Zn), copper (Cu), lead (Pb), vanadium (V) and iron (Fe) were investigated in Guangzhou, China. It was found that 55% of oxalate-containing particles were internally mixed with these metals. The number fraction of oxalate in the metal-containing particles ranged from 5.4-26%, which is much higher than that in the total detected particles (4.0%), indicating significant enrichment of oxalate in the metal-containing particles. Enhanced oxalate production was found in the Fe- and V-containing particles based on distinctly higher relative peak area (RPA) ratios of oxalate to its precursors compared to the total particles, possibly due to enhanced aqueous phase reactions in the Fe- and V-containing particles. However, enrichment of oxalate in the Zn-, Pb-, and Cu-containing particles was possibly associated with complexation of gas phase oxalic acid with the metals, as indicated by the small increase in RPA ratios in these particles. On the other hand, the internal mixing of oxalate with metals was found to provide a way of efficient photolysis of oxalate-metal complexes, which led to a decrease in oxalate after sunrise in the metal-containing particles. In this study, the enhanced mixing states of oxalate with metals have revealed the important role of metals in the production and degradation of oxalate, providing insights for the evaluation of metals in the formation processes of organic aerosol in field studies, which is beneficial to the further study of air pollution in metal emission areas.
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Affiliation(s)
- Haifeng Gong
- Institute of Mass Spectrometry and Atmospheric Environment, Guangdong Provincial Engineering Research Center for on-line source apportionment system of air pollution Jinan University, Guangzhou 510632, China; Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou 510632, China
| | - Chunlei Cheng
- Institute of Mass Spectrometry and Atmospheric Environment, Guangdong Provincial Engineering Research Center for on-line source apportionment system of air pollution Jinan University, Guangzhou 510632, China; Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou 510632, China.
| | - Mei Li
- Institute of Mass Spectrometry and Atmospheric Environment, Guangdong Provincial Engineering Research Center for on-line source apportionment system of air pollution Jinan University, Guangzhou 510632, China; Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou 510632, China.
| | - Suxia Yang
- Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou 510632, China; Institute for Environment and Climate Research, Jinan University, Guangzhou 510632, China
| | - Qianni Zhou
- Institute of Mass Spectrometry and Atmospheric Environment, Guangdong Provincial Engineering Research Center for on-line source apportionment system of air pollution Jinan University, Guangzhou 510632, China; Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou 510632, China
| | - Qi En Zhong
- Institute of Mass Spectrometry and Atmospheric Environment, Guangdong Provincial Engineering Research Center for on-line source apportionment system of air pollution Jinan University, Guangzhou 510632, China; Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou 510632, China
| | - Yao Zhang
- Institute of Mass Spectrometry and Atmospheric Environment, Guangdong Provincial Engineering Research Center for on-line source apportionment system of air pollution Jinan University, Guangzhou 510632, China; Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou 510632, China
| | - Yutong Xie
- Institute of Mass Spectrometry and Atmospheric Environment, Guangdong Provincial Engineering Research Center for on-line source apportionment system of air pollution Jinan University, Guangzhou 510632, China; Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou 510632, China
| | - Zhen Zhou
- Institute of Mass Spectrometry and Atmospheric Environment, Guangdong Provincial Engineering Research Center for on-line source apportionment system of air pollution Jinan University, Guangzhou 510632, China; Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou 510632, China
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18
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Zheng Y, Li H, Yu Q, Yu L, Jiao B, Li D. Application of UV radiation for in-situ Cr(VI) reduction from contaminated soil with electrokinetic remediation. JOURNAL OF HAZARDOUS MATERIALS 2021; 416:125806. [PMID: 33873035 DOI: 10.1016/j.jhazmat.2021.125806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 03/03/2021] [Accepted: 03/31/2021] [Indexed: 06/12/2023]
Abstract
Restoring hexavalent chromium (Cr(VI)) to trivalent chromium (Cr(III)) from contaminated soil is a cost-effective alternative for attenuating Cr(VI) toxicity to the ecosystem. A new electrokinetic remediation (EKR) system with UV light was explored to overcome an energy barrier to catalyze Cr(VI) reduction from the surface soil near the anodic reservoir. Natural organic matters and minerals from the contaminated soil acted as electron donors and catalysts for Cr(VI) photo-reduction and no additional chemical reagent. There was almost no residual Cr(VI) in anolyte after UV/EKR compared with the conventional EKR. The reduction improved the efficiency of EKR in the soil near the anodic reservoir by dropped the Cr(VI) negative mass flux caused by electroosmosis advection and concentration diffusion. The pathways of Cr(VI) photo-reduction are possibly dominated by ligand-to-metal charge transfer, i.e., photocatalytic cyclic reduction by Fe(III)/Fe(II) complexes on the surface of the minerals and in soil pore fluid and the photo-induced decomposition of chromate ester. It is concluded that UV/EKR is a clean, efficient, and low-cost method for remediation of Cr(VI)-contaminated soil.
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Affiliation(s)
- Yi Zheng
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; College of Resource and Safety Engineering, Chongqing University, Chongqing, 400044, China
| | - Huilin Li
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; College of Resource and Safety Engineering, Chongqing University, Chongqing, 400044, China
| | - Qiu Yu
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; College of Resource and Safety Engineering, Chongqing University, Chongqing, 400044, China
| | - Lin Yu
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; College of Resource and Safety Engineering, Chongqing University, Chongqing, 400044, China
| | - Binquan Jiao
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; College of Resource and Safety Engineering, Chongqing University, Chongqing, 400044, China
| | - Dongwei Li
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; College of Resource and Safety Engineering, Chongqing University, Chongqing, 400044, China.
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19
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Mutual influence of cupric cations and several anions in anatase and rutile TiO 2 photocatalysis. Photochem Photobiol Sci 2021; 20:1099-1107. [PMID: 34370291 DOI: 10.1007/s43630-021-00083-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 07/26/2021] [Indexed: 10/20/2022]
Abstract
Copper ions in aqueous solution are known to promote organic oxidation in semiconductor photocatalysis, but the counter anions seem to be important as well. In this work, the performance of Cu(ClO4)2 in presence of several anions in sodium forms (F-, Cl-, ClO4-, NO3-, and SO42-) has been examined. Phenol oxidation in aqueous solution (pH 4) under UV light was used as model reaction and TiO2 in the forms of anatase (AT) and rutile (RT) as photocatalysts. On the addition of 0.1-5 mM Cu2+, the reactions on AT and RT all increased. On the addition of 1 mM anions, reactions on AT increased by F-and SO42-, but reactions on RT all decreased. In presence of 3 mM Cu2+, however, reactions on AT and RT all decreased by 1 mM anions except NO3-. Such anion effects were also observed for H2 production on AT and RT in presence of Cu2+ and 10% methanol. A possible mechanism for the positive and negative anion effects is discussed. This work indicates that the formation of a Cu(II)/Cu(I) complex with anions weakens the positive effect of copper ions on organic oxidation in TiO2 photocatalysis.
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20
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Benssassi ME, Mammeri L, Talbi K, Lekikot B, Sehili T, Santaballa JA, Canle M. Removal of paracetamol in the presence of iron(III) complexes of glutamic and lactic acid in aqueous solution under NUV irradiation. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.118195] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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21
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Photolytic radical persistence due to anoxia in viscous aerosol particles. Nat Commun 2021; 12:1769. [PMID: 33741973 PMCID: PMC7979739 DOI: 10.1038/s41467-021-21913-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 02/18/2021] [Indexed: 02/07/2023] Open
Abstract
In viscous, organic-rich aerosol particles containing iron, sunlight may induce anoxic conditions that stabilize reactive oxygen species (ROS) and carbon-centered radicals (CCRs). In laboratory experiments, we show mass loss, iron oxidation and radical formation and release from photoactive organic particles containing iron. Our results reveal a range of temperature and relative humidity, including ambient conditions, that control ROS build up and CCR persistence in photochemically active, viscous organic particles. We find that radicals can attain high concentrations, altering aerosol chemistry and exacerbating health hazards of aerosol exposure. Our physicochemical kinetic model confirmed these results, implying that oxygen does not penetrate such particles due to the combined effects of fast reaction and slow diffusion near the particle surface, allowing photochemically-produced radicals to be effectively trapped in an anoxic organic matrix. Sunlight can change the composition of atmospheric aerosol particles, but the mechanisms through which this happens are not well known. Here, the authors show that fast radical reaction and slow diffusion near viscous organic particle surfaces can cause oxygen depletion, radical trapping and humidity dependent oxidation.
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22
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Ma J, Meng W, Zhang L, Li F, Li T. Effective oil-water mixture separation and photocatalytic dye decontamination through nickel-dimethylglyoxime microtubes coated superhydrophobic and superoleophilic films. RSC Adv 2021; 11:5035-5043. [PMID: 35424431 PMCID: PMC8694634 DOI: 10.1039/d0ra09240a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 01/18/2021] [Indexed: 11/25/2022] Open
Abstract
Oils and solvable organic pollutants in wastewater demand separations of the components along with efficient photocatalysis in water treatment. Herein, we report on a practical purification strategy by using the multifunctional nickel-dimethylglyoxime [Ni(DMG)2] microtubes to separate the liquid mixture and degrade organic pollutants. The self-assembled [Ni(DMG)2] tubes was synthesized by a facile co-precipitation method. The static contact angle of the film prepared by mixing [Ni(DMG)2] powder (1 : 2 wt%) into polydimethylsilicone (PDMS) to water can reach 161.3°, which can still remain superhydrophobic but oil-friendly under corrosion conditions. PDMS imparts good mechanical properties and serves as both the adhesive and hydrophobic material. PFOTS methanol solution contains a large number of low surface energy groups, which can reduce the surface free energy of [Ni(DMG)2] rough structure. The superhydrophobic rough surface prepared by hollow micron tubular [Ni(DMG)2] samples must have both low surface energy substance and hollow micron tubular morphology. Due to the unique wettability, oil and water were efficiently separated from the oil-water mixture through the films. The coated film itself is photocatalytic in degrading quinoline blue, rhodamine B, methyl orange and methylene blue. By using the film's multifunctionality, a practical wastewater treatment was realized via water-oil separation, followed by fast photocatalytic degradation of solvable dyes.
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Affiliation(s)
- Jinxiu Ma
- College of Chemistry, Key Lab of Environment Friendly Chemistry and Application in Ministry of Education, Xiangtan University Xiangtan 411105 China
| | - Wen Meng
- College of Chemistry, Key Lab of Environment Friendly Chemistry and Application in Ministry of Education, Xiangtan University Xiangtan 411105 China
| | - Lahong Zhang
- College of Chemistry, Key Lab of Environment Friendly Chemistry and Application in Ministry of Education, Xiangtan University Xiangtan 411105 China
| | - Feng Li
- College of Chemistry, Key Lab of Environment Friendly Chemistry and Application in Ministry of Education, Xiangtan University Xiangtan 411105 China
- Nano and Molecular Systems Research Unit, University of Oulu P.O. Box 3000 FIN-90014 Finland
| | - Taohai Li
- College of Chemistry, Key Lab of Environment Friendly Chemistry and Application in Ministry of Education, Xiangtan University Xiangtan 411105 China
- Nano and Molecular Systems Research Unit, University of Oulu P.O. Box 3000 FIN-90014 Finland
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23
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Etaiw SEH, Shalaby EM, Abd El‐Aziz DM, Elzeny I. Ultrasound irradiation synthesis and crystal structure of Co(II) thiocyanate supramolecular complex: Photocatalytic and sonocatalytic degradation of methyl violet 2B dye. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6159] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
| | - Elsayed M. Shalaby
- X‐Ray Crystallography Lab, Physics Division National Research Center Giza Egypt
| | | | - Islam Elzeny
- Chemistry Department, Faculty of Science Tanta University Tanta Egypt
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24
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Liu X, Wei W, Xu J, Wang D, Song L, Ni BJ. Photochemical decomposition of perfluorochemicals in contaminated water. WATER RESEARCH 2020; 186:116311. [PMID: 32836148 DOI: 10.1016/j.watres.2020.116311] [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: 05/07/2020] [Revised: 08/13/2020] [Accepted: 08/17/2020] [Indexed: 06/11/2023]
Abstract
Perfluorochemicals (PFCs) are a set of chemicals containing C-F bonds, which are concerned due to their bioaccumulation property, persistent and toxicological properties. Photocatalytic approaches have been widely studied for the effective removal of PFCs due to the mild operation conditions. This review aims to provide a comprehensive and up-to-date summary on the homogenous and heterogeneous photocatalytic processes for PFCs removal. Specifically, the homogenous photocatalytic methods for remediating PFCs are firstly discussed, including generation of hydrated electrons (eaq‒) and its performance and mechanisms for photo-reductive destruction of PFCs, the active species responsible for photo-oxidative degradation of PFCs and the corresponding mechanisms, and metal-ion-mediated (Fe(III) mainly used) processes for the remediation of PFCs. The influences of molecular structures of PFCs and water matrix, such as dissolved oxygen, humic acid, nitrate, chloride on the homogenous photocatalytic degradation of PFCs are also discussed. For heterogeneous photocatalytic processes, various semiconductor photocatalysts used for the decomposition of perfluorooctanoic acid (PFOA) are then discussed in terms of their specific properties benefiting photocatalytic performances. The preparation methods for optimizing the performance of photocatalysts are also overviewed. Moreover, the photo-oxidative and photo-reductive pathways are summarized for remediating PFOA in the presences of different semiconductor photocatalysts, including active species responsible for the degradation. We finally put forward several key perspectives for the photocatalytic removal of PFCs to promote its practical application in PFCs-containing wastewater treatment, including the treatment of PFCs degradation products such as fluoride ion, and the development of noble-metal free photocatalysts that could efficiently remove PFCs under solar light irradiation.
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Affiliation(s)
- Xiaoqing Liu
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Wei Wei
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Juan Xu
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200241, China; Institute of Eco-Chongming, No. 20 Cuiniao Road, ChenJiazhen, Shanghai, 202162, China.
| | - Dongbo Wang
- Key Laboratory of Environmental Biology and Pollution Control, College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China
| | - Lan Song
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, PR China
| | - Bing-Jie Ni
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia.
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Liu H, Pu Y, Tong T, Zhu X, Sun B, Zhang X. Photochemical Generation of Methyl Chloride from Humic Aicd: Impacts of Precursor Concentration, Solution pH, Solution Salinity and Ferric Ion. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17020503. [PMID: 31941122 PMCID: PMC7013589 DOI: 10.3390/ijerph17020503] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 01/02/2020] [Accepted: 01/09/2020] [Indexed: 12/02/2022]
Abstract
Methyl chloride (CH3Cl) is presently understood to arise from biotic and abiotic processes in marine systems. However, the production of CH3Cl via photochemical processes has not been well studied. Here, we reported the production of CH3Cl from humic acid (HA) in sunlit saline water and the effects of the concentration of HA, chloride ions, ferric ions and pH were investigated. HA in aqueous chloride solutions or natural seawater were irradiated under an artificial light, and the amounts of CH3Cl were determined using a purge-and-trap and gas chromatography-mass spectrometry. CH3Cl was generated upon irradiation and its amount increased with increasing irradiation time and the light intensity. The formation of CH3Cl increased with an increase of HA concentration ranging from 2 mg L−1 to 20 mg L−1 and chloride ion concentration ranging from 0.02 mol L−1 to 0.5 mol L−1. The photochemical production of CH3Cl was pH-dependent, with the highest amount of CH3Cl generating near neutral conditions. Additionally, the generation of CH3Cl was inhibited by ferric ions. Finally, natural coastal seawater was irradiated under artificial light and the concentration of CH3Cl rose significantly. Our results suggest that the photochemical process of HA may be a source of CH3Cl in the marine environment.
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Wang Y, Cui Z, Xiao G, Zhao Y, Jin Y, Wang Z, Su H, Tan T. The visible-light-driven photo-reduction of Cr(VI) by formic acid in aqueous solution. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.115727] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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27
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Alter M, Binet L, Touati N, Lubin-Germain N, Le Hô AS, Mirambet F, Gourier D. Photochemical Origin of the Darkening of Copper Acetate and Resinate Pigments in Historical Paintings. Inorg Chem 2019; 58:13115-13128. [PMID: 31524393 DOI: 10.1021/acs.inorgchem.9b02007] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Copper acetate and copper resinate pigments are bimetallic CuII complexes in which metal atoms are bridged by four carboxylate ligands (acetate or abietate). Prepared with lindseed oil as binder, these green pigments were particularly used in easel paintings between the 15th and 17th centuries. Unfortunately, they had the tendency to darken in an irreversible way, explaining why they fell into disuse. The darkening mechanism of films of copper pigments in linseed oil is studied by electron paramagnetic resonance (EPR) and by optical absorption spectroscopy (OAS). EPR and OAS reveal different chemical and photochemical behaviors depending on the type of copper complex and on the binding oil. The effect of light is investigated by illuminating the films at ∼410 nm in the bridging ligand-to-metal charge transfer (LMCT) transition. The photodarkening manifests itself as the appearance of an optical absorption band around 22 000 cm-1 and a decrease of the EPR intensity of bimetallic copper complexes. These effects are explained by the photoinduced substitution of acetate (or abietate) bridging ligands by dioxygen molecules from ambient atmosphere. The resulting peroxo-CuII dimer is characterized by a red shift of the LMCT and an increase of the exchange interaction in the ground state, which is responsible for the decrease of the EPR intensity due to the depletion of the paramagnetic S = 1 state. This mechanism explains the differences in darkening intensity observed with different pigment compositions (resinate versus acetate, raw linseed oil versus boiled linseed oil).
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Affiliation(s)
- Marion Alter
- CNRS, Institut de Recherche de Chimie de Paris (IRCP) , Chimie-ParisTech, PSL University , 75005 Paris , France.,Centre de Recherche et de Restauration des Musées de France (C2RMF) , Palais du Louvre , 75001 Paris , France
| | - Laurent Binet
- CNRS, Institut de Recherche de Chimie de Paris (IRCP) , Chimie-ParisTech, PSL University , 75005 Paris , France.,Centre de Recherche et de Restauration des Musées de France (C2RMF) , Palais du Louvre , 75001 Paris , France
| | - Nadia Touati
- CNRS, Institut de Recherche de Chimie de Paris (IRCP) , Chimie-ParisTech, PSL University , 75005 Paris , France.,Centre de Recherche et de Restauration des Musées de France (C2RMF) , Palais du Louvre , 75001 Paris , France
| | - Nadège Lubin-Germain
- Laboratoire de Chimie Biologique (LCB) , EA4505, Université de Cergy-Pontoise , 95510 Cergy-Pontoise , France
| | - Anne-Solenn Le Hô
- CNRS, Institut de Recherche de Chimie de Paris (IRCP) , Chimie-ParisTech, PSL University , 75005 Paris , France.,Centre de Recherche et de Restauration des Musées de France (C2RMF) , Palais du Louvre , 75001 Paris , France
| | - François Mirambet
- CNRS, Institut de Recherche de Chimie de Paris (IRCP) , Chimie-ParisTech, PSL University , 75005 Paris , France.,Centre de Recherche et de Restauration des Musées de France (C2RMF) , Palais du Louvre , 75001 Paris , France
| | - Didier Gourier
- CNRS, Institut de Recherche de Chimie de Paris (IRCP) , Chimie-ParisTech, PSL University , 75005 Paris , France.,Centre de Recherche et de Restauration des Musées de France (C2RMF) , Palais du Louvre , 75001 Paris , France
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Majumdar D, Das D, Sreejith S, Nag S, Dey S, Mondal S, Bankura K, Mishra D. Synthesis, characterizations and single crystal structure of di-nuclear azido-bridged Cd(II) coordination polymer with Schiff base precursor (H2LpentOMe): DFT, fluorescence, solvatochromism and in vitro antimicrobial assay. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.119069] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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29
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Graça CAL, Maniero MG, De Andrade LM, Roberto Guimarães J, Teixeira ACSC. Evaluation of amicarbazone toxicity removal through degradation processes based on hydroxyl and sulfate radicals. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2019; 54:1126-1143. [PMID: 31328643 DOI: 10.1080/10934529.2019.1643693] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 06/29/2019] [Accepted: 07/02/2019] [Indexed: 06/10/2023]
Abstract
The herbicide amicarbazone (AMZ), which appeared as a possible alternative to atrazine, presents moderate environmental persistence and is unlikely to be removed by conventional water treatment techniques. Advanced oxidation processes (AOPs) driven by •OH and/or SO4•- radicals are then promising alternatives to AMZ-contaminated waters remediation, even though, in some cases, they can originate more toxic degradation products than the parent-compound. Therefore, assessing treated solutions toxicity prior to disposal is of extreme importance. In this study, the toxicity of AMZ solutions, before and after treatment with different •OH-driven and SO4•--driven AOPs, was evaluated for five different microorganisms: Vibrio fischeri, Chlorella vulgaris, Tetrahymena thermophila, Escherichia coli, and Bacillus subtilis. In general, the toxic response of AMZ was greatly affected by the addition of reactants, especially when persulfate (PS) and/or Fe(III)-carboxylate complexes were added. The modifications of this response after treatment were correlated with AMZ intermediates, which were identified by mass spectrometry. Thus, low molecular weight by-products, resulting from fast degradation kinetics, were associated with increased toxicity to bacteria and trophic effects to microalgae. These observations were compared with toxicological predictions given by a Structure-Activity Relationships software, which revealed to be fairly compatible with our empirical findings.
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Affiliation(s)
- Cátia A L Graça
- Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Faculdade de Engenharia, Universidade do Porto , Porto , Portugal
| | - Milena Guedes Maniero
- School of Civil Engineering, Architecture and Urban Design, University of Campinas , Campinas , Brazil
| | | | - José Roberto Guimarães
- School of Civil Engineering, Architecture and Urban Design, University of Campinas , Campinas , Brazil
| | - Antonio Carlos S C Teixeira
- Research Group in Advanced Oxidation Processes (AdOx), Department of Chemical Engineering, University of São Paulo , São Paulo , Brazil
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30
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Majumdar D, Dey S, Das D, Singh DK, Das S, Bankura K, Mishra D. Heterometallic Zn(II)-K(I) complex with salen-type Schiff-base ligand: Synthesis, crystal structure, solid-state photoluminescent property and theoretical study. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.02.092] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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31
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Majumdar D, Das S, Thomas R, Ullah Z, Sreejith S, Das D, Shukla P, Bankura K, Mishra D. Syntheses, X-ray crystal structures of two new Zn(II)-dicyanamide complexes derived from H2vanen-type compartmental ligands: Investigation of thermal, photoluminescence, in vitro cytotoxic effect and DFT-TDDFT studies. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.04.041] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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32
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Wan D, Sharma VK, Liu L, Zuo Y, Chen Y. Mechanistic Insight into the Effect of Metal Ions on Photogeneration of Reactive Species from Dissolved Organic Matter. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:5778-5786. [PMID: 31021612 DOI: 10.1021/acs.est.9b00538] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The photogeneration of reactive species (RS) from dissolved organic matter (DOM) exhibits a great impact on the attenuation of pollutants in natural waters. However, the effect of metal ions on the photogeneration of excited triplet-state DOM (3DOM*), singlet oxygen (1O2), and hydroxyl radical (•OH) by effluent organic matter (EfOM), fulvic acid (FA), and humic acid (HA) is poorly understood. Here, we provided the first evidence that the quenching of 3DOM* was positively correlated with the complexation capacity of metal ions with DOM. Generally, the paramagnetic metal ions (Cr3+, Mn2+, Fe3+, and Cu2+) exhibited higher conditional stability constants (log KML) with DOM and stronger inhibition for RS than the others (Mg2+, Ca2+, Al3+, and Zn2+). For DOM of different sources, the metal binding capacity increased in the order of EfOM < HA < FA and the humic substances were more susceptible to metal ions. The inhibition was attributed to both static and dynamic quenching of 3DOM* by metal ions. The dynamic quenching rate constants of metal ions for 3DOM* were estimated as ∼109 M-1 s-1, which was positively related to the corresponding log KML. These findings highlight crucial links between metal-DOM complexation and 3DOM* quenching and, consequently, the inhibition of RS.
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Affiliation(s)
- Dong Wan
- School of Environmental Science and Engineering , Huazhong University of Science and Technology , Wuhan , Hubei 430074 , People's Republic of China
| | - Virender K Sharma
- Program for the Environment and Sustainability, Department of Environmental and Occupational Health, School of Public Health , Texas A&M University , College Station , Texas 77843 , United States
| | - Lu Liu
- School of Environmental Science and Engineering , Huazhong University of Science and Technology , Wuhan , Hubei 430074 , People's Republic of China
| | - Yuegang Zuo
- University of Massachusetts Dartmouth , 285 Old Westport Road , North Dartmouth , Massachusetts 02747-2300 , United States
| | - Yong Chen
- School of Environmental Science and Engineering , Huazhong University of Science and Technology , Wuhan , Hubei 430074 , People's Republic of China
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33
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Majumdar D, Das D, Sreejith S, Das S, Kumar Biswas J, Mondal M, Ghosh D, Bankura K, Mishra D. Dicyanamide-interlaced assembly of Zn(II)-schiff-base complexes derived from salicylaldimino type compartmental ligands: Syntheses, crystal structures, FMO, ESP, TD-DFT, fluorescence lifetime, in vitro antibacterial and anti-biofilm properties. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.02.022] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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34
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Majumdar D, Dey S, Sreejith S, Biswas JK, Mondal M, Shukla P, Das S, Pal T, Das D, Bankura K, Mishra D. Syntheses, crystal structures and photo physical aspects of azido-bridged tetranuclear cadmium (II) complexes: DFT/TD-DFT, thermal, antibacterial and anti-biofilm properties. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.11.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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35
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Wan D, Zhang G, Chen Y, Lu X, Zuo Y. Photogeneration of hydroxyl radical in Fe(III)-citrate-oxalate system for the degradation of fluconazole: mechanism and products. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:8640-8649. [PMID: 30707383 DOI: 10.1007/s11356-019-04348-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Accepted: 01/22/2019] [Indexed: 06/09/2023]
Abstract
The photochemical role of Fe(III)-citrate complex is significant in natural waters due to its ubiquitous existence and excellent photoreactivity at near neutral pH. Although there are many reports on the photoinduced degradation of pollutants in the Fe(III)-citrate system, the optimum pH for its photoreactivity is yet not clearly understood. Here, for the first time, we demonstrated that the optimum pH was 5.5 for the photoproduction of •OH in the Fe(III)-citrate system via kinetics modeling based on the steady-state approximation. According to the experimental results, the •OH photoproduction increased with increasing pH until 5.5 and then decreased in Fe(III)-citrate solution, which agreed well with the prediction trend of kinetic modeling. The effect of the common ligand oxalate on the photoreactivity of Fe(III)-citrate system was also investigated. The addition of oxalate promoted the photoproduction of •OH in Fe(III)-citrate solutions, and the measured [•OH]ss increased with oxalate concentration under a fixed Fe(III)-to-citrate ratio. Little synergistic effect exists in Fe(III)-citrate-oxalate system at pH 4.0-5.5. In contrast, an appreciable synergistic effect was observed at near neutral pH (6.0-8.0). Higher oxalate-to-citrate ratio facilitated the synergistic effect. Furthermore, antifungal drug fluconazole could be removed efficiently in the Fe(III)-citrate-oxalate system. The photodegradation kinetics also verified the optimum pH of Fe(III)-citrate system and synergistic effect of oxalate. By LC-ESI-MS/MS analyses, the photoproducts of fluconazole in the Fe(III)-citrate-oxalate system were identified and the reaction mechanism involving hydroxylation substitution and subsequent cleavage of heterocyclic amine was proposed. These findings suggest that Fe(III)-citrate exhibits best photoreactivity at pH 5.5, and the coexistence of reactive ligands will enhance its photoreactivity at circumneutral pH, indicating potential application in wastewater treatment via addition of appropriate citrate and co-ligands.
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Affiliation(s)
- Dong Wan
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Guofei Zhang
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Yong Chen
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China.
| | - Xiye Lu
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Yuegang Zuo
- University of Massachusetts Dartmouth, 285 Old Westport Road, North Dartmouth, MA, 02747-2300, USA
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Huang X, Wang Y, Li X, Guan D, Li Y, Zheng X, Zhao M, Shan C, Pan B. Autocatalytic Decomplexation of Cu(II)-EDTA and Simultaneous Removal of Aqueous Cu(II) by UV/Chlorine. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:2036-2044. [PMID: 30653306 DOI: 10.1021/acs.est.8b05346] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Traditional processes usually cannot enable efficient water decontamination from toxic heavy metals complexed with organic ligands. Herein, we first reported the removal of Cu(II)-EDTA by a UV/chlorine process, where the Cu(II)-EDTA degradation obeyed autocatalytic two-stage kinetics, and Cu(II) was simultaneously removed as CuO precipitate. The scavenging experiments and EPR analysis indicated that Cl• accounted for the Cu(II)-EDTA degradation at diffusion-controlled rate (∼1010 M-1 s-1). Mechanism study with mass spectrometry evidence of 11 key intermediates revealed that the Cu(II)-EDTA degradation by UV/chlorine was an autocatalytic successive decarboxylation process mediated by the Cu(II)/Cu(I) redox cycle. Under UV irradiation, Cu(I) was generated during the photolysis of the Cl•-attacked complexed Cu(II) via ligand-to-metal charge transfer (LMCT). Both free and organic ligand-complexed Cu(I) could form binary/ternary complexes with ClO-, which were oxidized back to Cu(II) via metal-to-ligand charge transfer (MLCT) with simultaneous production of Cl•, resulting in the autocatalytic effect on Cu(II)-EDTA removal. Effects of chlorine dosage and pH were examined, and the technological practicability was validated with authentic electroplating wastewater and other Cu(II)-organic complexes. This study shed light on a new mechanism of decomplexation by Cl• and broadened the applicability of the promising UV/chlorine process in water treatment.
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Affiliation(s)
- Xianfeng Huang
- School of Life and Environmental Science , Wenzhou University , Wenzhou , 325035 , China
| | - Yi Wang
- School of Life and Environmental Science , Wenzhou University , Wenzhou , 325035 , China
| | - Xuchun Li
- School of Environmental Science and Engineering , Zhejiang Gongshang University , Hangzhou , 310018 , China
| | - Dongxing Guan
- Key Laboratory of Surficial Geochemistry, Ministry of Education, School of Earth Sciences and Engineering , Nanjing University , Nanjing 210023 , China
| | - Yubao Li
- School of Life and Environmental Science , Wenzhou University , Wenzhou , 325035 , China
| | - Xiangyong Zheng
- School of Life and Environmental Science , Wenzhou University , Wenzhou , 325035 , China
| | - Min Zhao
- School of Life and Environmental Science , Wenzhou University , Wenzhou , 325035 , China
| | - Chao Shan
- State Key Laboratory of Pollution Control and Resource Reuse , School of the Environment, Nanjing University , Nanjing 210023 , China
| | - Bingcai Pan
- State Key Laboratory of Pollution Control and Resource Reuse , School of the Environment, Nanjing University , Nanjing 210023 , China
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37
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Peng X, Dou W, Kong L, Hu X, Wang X. Removal of Chloride Ions from Strongly Acidic Wastewater Using Cu(0)/Cu(II): Efficiency Enhancement by UV Irradiation and the Mechanism for Chloride Ions Removal. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:383-389. [PMID: 30525508 DOI: 10.1021/acs.est.8b05787] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Strongly acidic wastewater, which is usually generated from nonferrous metal smelting industries, has the ability to be recycled as sulfuric acid. Before this wastewater is recycled, the removal of chloride ions is necessary to improve the quality of the recycled sulfuric acid. At present, the widely used method to remove chloride ions from acidic wastewater in the form of CuCl precipitate has several disadvantages, including low removal efficiency, high temperature, long treatment time, and high dosage of Cu(II). This study proposed an improved new method of removing Cl(-I) using Cu(0)/Cu(II) under UV irradiation, and the mechanism was investigated. The Cl(-I) concentration was lowered to below 50 mg/L at a Cu(II) dosage of 1200 mg/L. Under UV irradiation, ligand-to-metal charge transfer takes place, thereby resulting in the formation of Cl•. Next, CuCl precipitates form through the reaction between Cu(0) and Cl• and produce h+/•OH under UV irradiation, which can oxidize Cl(-I) to Cl•. Simultaneously, Cl2 gas also forms directly from Cl•. This study offered a theoretical foundation for the application of UV irradiation for the enhanced removal of chloride ions from strongly acidic wastewater.
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Affiliation(s)
- Xianjia Peng
- University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Wenyue Dou
- University of Chinese Academy of Sciences , Beijing 100049 , China
| | | | | | - Xianliang Wang
- National Institute of Environmental Health , Chinese Center for Disease Control and Prevention , Beijing 100021 , China
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38
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Pan Y, Su H, Zhu Y, Vafaei Molamahmood H, Long M. CaO 2 based Fenton-like reaction at neutral pH: Accelerated reduction of ferric species and production of superoxide radicals. WATER RESEARCH 2018; 145:731-740. [PMID: 30216867 DOI: 10.1016/j.watres.2018.09.020] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2018] [Revised: 08/28/2018] [Accepted: 09/05/2018] [Indexed: 06/08/2023]
Abstract
One challenge in H2O2 based Fenton-like reaction is to break through the limitation of slow reduction of ferric species (FeIII). Present work describes a dramatic acceleration of Fenton-like reaction at neutral pH by using calcium peroxide (CaO2) as a source of hydrogen peroxide (H2O2) and EDTA as a chelating agent of ferric ions. In an optimized condition, phenol degradation in the H2O2 system displayed an initial latent time of 60 min, while phenol can be degraded immediately and removed completely in 30 min in the CaO2 system. Visual MINTEQ analyses indicated Fe-EDTA- was the active species in the reaction. The contribution of 1O2 in CaO2 system was excluded by the poor selectivity in phenol conversion and the comparable 1O2-TEMP EPR signals in both CaO2 and H2O2 systems. Kinetic analyses using chloroform as the probe of O2·- suggested the high production rate of O2·-, which is four orders of magnitude higher than that in H2O2 system. The mechanism of the accelerated CaO2 based Fenton-like reactions was featured by that two electrons coming from CaO2 can be utilized to promote reduction of FeIII: an inner sphere electron transfer takes place to reduce FeIII-EDTA and produce O2·-, and subsequently O2·- provides an electron to reduce another FeIII-EDTA. The revealed intrinsic reducibility in CaO2 based Fenton-like reaction represents a new strategy to break through the well-known rate limiting step of FeIII reduction in Fenton-like reaction and facilitate the removal of organic pollutants at neutral pHs, and also indicates a promising source of O2·- for diverse applications.
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Affiliation(s)
- Yue Pan
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Hanrui Su
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yitong Zhu
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Hamed Vafaei Molamahmood
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Mingce Long
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China; Key Laboratory for Thin Film and Microfabrication Technology (Ministry of Education), Shanghai Jiao Tong University, Shanghai, 200240, China.
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Wan D, Zuo J, Chen Y, Chen Q, Zuo Y. Photodegradation of amitriptyline in Fe(III)-citrate-oxalate binary system: Synergistic effect and mechanism. CHEMOSPHERE 2018; 210:224-231. [PMID: 30005343 DOI: 10.1016/j.chemosphere.2018.07.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2018] [Revised: 05/29/2018] [Accepted: 07/01/2018] [Indexed: 06/08/2023]
Abstract
Fe(III) and carboxylic acids are ubiquitous in surface water and atmospheric water droplets. Numerous documents have reported the photochemistry of Fe(III)-carboxylate complexes, typically including Fe(III)-oxalate and Fe(III)-citrate. Our previous study preliminarily showed that oxalate enhances the photoreactivity of Fe(III)-citrate system. Here, we further investigate the synergistic effect of Fe(III)-citrate-oxalate binary system at different conditions with pharmaceutical amitriptyline (AMT) as the model pollutant. In the Fe(III)-oxalate system, the photodegradation of AMT decreased with increasing pH from 3.0 to 8.0. In the Fe(III)-citrate system, the optimal pH for AMT degradation is around 5.0 in the same pH range. For the Fe(III)-citrate-oxalate system, the photodegradation of AMT decreased with increasing pH, indicating the combined effect of both oxalate and citrate on the photoreactivity. The addition of oxalate to the Fe(III)-citrate system markedly accelerated the photodegradation of AMT. The Fe(III)-carboxylate binary system exhibited excellent photoreactivity and up to 90% AMT was removed after 30 min at pH 6.0 with Fe(III)/citrate/oxalate ratio of 10:150:500 (μM). Synergistic effect was observed in Fe(III)-citrate-oxalate binary system in the pH range of 5.0-8.0. The presence of oxalate promoted the depletion of citrate in the Fe(III)-citrate system. The higher concentration ratios of oxalate to citrate facilitated the synergistic effect in the Fe(III)-citrate-oxalate system. By LC-MS analyses, a possible pathway of AMT degradation was proposed based on hydroxyl radicals (OH) mechanism. This finding could be helpful for the better understanding of synergistic mechanism of Fe(III)-citrate-oxalate binary complexes, which will be of great potential application in environmental photocatalysis at near neutral pH.
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Affiliation(s)
- Dong Wan
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Jiaolan Zuo
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Yong Chen
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Qian Chen
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Yuegang Zuo
- University of Massachusetts Dartmouth, 285 Old Westport Road, North Dartmouth, MA 02747-2300, USA
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40
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Seraghni N, Ghoul I, Lemmize I, Reguig A, Debbache N, Sehili T. Use of oxalic acid as inducer in photocatalytic oxidation of cresol red in aqueous solution under natural and artificial light. ENVIRONMENTAL TECHNOLOGY 2018; 39:2908-2915. [PMID: 28820023 DOI: 10.1080/09593330.2017.1369580] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
This work was carried out in the field of water treatment using advanced oxidation processes (AOPs), especially photolysis of carboxylic acid that leads to the formation in situ of hydroxyl radical (·OH). Cresol red (CR) degradation induced by organic acids/UV system was investigated in aqueous solution. The preliminary study of CR-organic acid mixture in the dark and at room temperature allowed confirming the absence of interaction under our experimental conditions. However, upon irradiation at 365 nm, the proportion of elimination of CR was 89% after 5 h of irradiation. Indeed, the CR degradation efficiency depends on the acid concentration and the pH of the medium. The concentration of acid is optimized to the 5 × 10-3 M. pH 2.39 was the optimal one when C2HO- 4 was the most important species at this pH. The use of i-PrOH as ·OH confirmed the involvement of ·OH in photodegradation of CR induced by Ox. The addition of metal ions including Zn2+ and Cu2+ to the CR-organic acid mixture slowed the CR degradation unlike Fe2+, hence an improvement of its disappearance was observed. The results showed a faster degradation of the pollutant under excitation by sunlight. This environmentally friendly method appears to be very effective in the treatment of wastewater.
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Affiliation(s)
- N Seraghni
- a Laboratory of Science and Technology of Environment, Faculty of Exact Sciences, Department of Chemistry , University of Mentouri Brothers Constantine 1 , Constantine , Algeria
| | - I Ghoul
- a Laboratory of Science and Technology of Environment, Faculty of Exact Sciences, Department of Chemistry , University of Mentouri Brothers Constantine 1 , Constantine , Algeria
| | - I Lemmize
- a Laboratory of Science and Technology of Environment, Faculty of Exact Sciences, Department of Chemistry , University of Mentouri Brothers Constantine 1 , Constantine , Algeria
| | - A Reguig
- a Laboratory of Science and Technology of Environment, Faculty of Exact Sciences, Department of Chemistry , University of Mentouri Brothers Constantine 1 , Constantine , Algeria
| | - N Debbache
- a Laboratory of Science and Technology of Environment, Faculty of Exact Sciences, Department of Chemistry , University of Mentouri Brothers Constantine 1 , Constantine , Algeria
| | - T Sehili
- a Laboratory of Science and Technology of Environment, Faculty of Exact Sciences, Department of Chemistry , University of Mentouri Brothers Constantine 1 , Constantine , Algeria
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41
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Koklic T, Urbančič I, Zdovc I, Golob M, Umek P, Arsov Z, Dražić G, Pintarič Š, Dobeic M, Štrancar J. Surface deposited one-dimensional copper-doped TiO2 nanomaterials for prevention of health care acquired infections. PLoS One 2018; 13:e0201490. [PMID: 30048536 PMCID: PMC6062141 DOI: 10.1371/journal.pone.0201490] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 07/15/2018] [Indexed: 01/03/2023] Open
Abstract
Bacterial infections acquired in healthcare facilities including hospitals, the so called healthcare acquired or nosocomial infections, are still of great concern worldwide and represent a significant economical burden. One of the major causes of morbidity is infection with Methicillin Resistant Staphylococcus aureus (MRSA), which has been reported to survive on surfaces for several months. Bactericidal activity of copper-TiO2 thin films, which release copper ions and are deposited on glass surfaces and heated to high temperatures, is well known even when illuminated with very weak UVA light of about 10 μW/cm2. Lately, there is an increased intrerest for one-dimensional TiO2 nanomaterials, due to their unique properties, low cost, and high thermal and photochemical stability. Here we show that copper doped TiO2 nanotubes produce about five times more ·OH radicals as compared to undoped TiO2 nanotubes and that effective surface disinfection, determined by a modified ISO 22196:2011 test, can be achieved even at low intensity UVA light of 30 μW/cm2. The nanotubes can be deposited on a preformed surface at room temperature, resulting in a stable deposition resistant to multiple washings. Up to 103 microorganisms per cm2 can be inactivated in 24 hours, including resistant strains such as Methicillin-resistant Staphylococcus aureus (MRSA) and Extended-spectrum beta-lactamase Escherichia coli (E. coli ESBL). This disinfection method could provide a valuable alternative to the current surface disinfection methods.
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Affiliation(s)
- Tilen Koklic
- Department of Condensed Matter Physics, Jožef Stefan Institute, Ljubljana, Slovenia
- NAMASTE Center of Excellence, Ljubljana, Slovenia
| | - Iztok Urbančič
- Department of Condensed Matter Physics, Jožef Stefan Institute, Ljubljana, Slovenia
- University of Oxford, John Radcliffe Hospital, The Weatherall Institute of Molecular Medicine, Human Immunology Unit, Headington, Oxford, United Kingdom
| | - Irena Zdovc
- NAMASTE Center of Excellence, Ljubljana, Slovenia
- Institute of Microbiology and Parasitology, Veterinary Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Majda Golob
- Institute of Microbiology and Parasitology, Veterinary Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Polona Umek
- Department of Condensed Matter Physics, Jožef Stefan Institute, Ljubljana, Slovenia
- NAMASTE Center of Excellence, Ljubljana, Slovenia
| | - Zoran Arsov
- Department of Condensed Matter Physics, Jožef Stefan Institute, Ljubljana, Slovenia
- NAMASTE Center of Excellence, Ljubljana, Slovenia
| | - Goran Dražić
- Department of Materials Chemistry, National Institute of Chemistry, Ljubljana, Slovenia
| | - Štefan Pintarič
- Institute of Environmental and Animal Hygiene with Animal Behaviour, Veterinary Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Martin Dobeic
- Institute of Environmental and Animal Hygiene with Animal Behaviour, Veterinary Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Janez Štrancar
- Department of Condensed Matter Physics, Jožef Stefan Institute, Ljubljana, Slovenia
- NAMASTE Center of Excellence, Ljubljana, Slovenia
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42
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Preparation of Cu x O/C composite derived from Cu-MOFs as Fenton-like catalyst by two-step calcination strategy. ADV POWDER TECHNOL 2018. [DOI: 10.1016/j.apt.2018.02.028] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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43
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Majumdar D, Biswas JK, Mondal M, Babu MSS, Das S, Metre RK, SreeKumar SS, Bankura K, Mishra D. Cd(II) Pseudohalide Complexes with N, N′-Bis(3-ethoxysalicylidenimino) 1,3-Diaminopropane: Crystal Structures, Hirshfeld Surface, Antibacterial and Anti-Biofilm Properties. ChemistrySelect 2018. [DOI: 10.1002/slct.201702970] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Dhrubajyoti Majumdar
- Department of Chemistry; Tamralipta Mahavidyalaya; Tamluk-721636, West Bengal India
| | - Jayanta Kumar Biswas
- Department of Ecological Studies & International Centre for Ecological Engineering; University of Kalyani; Kalyani 741235, West Bengal India
| | - Monojit Mondal
- Department of Ecological Studies & International Centre for Ecological Engineering; University of Kalyani; Kalyani 741235, West Bengal India
| | | | - Sourav Das
- Department of Chemistry; Institute of Infrastructure Technology Research and Management; Near Khokhara Circle, Maninagar East Ahmedabad-380026 Gujarat India
| | - Ramesh K. Metre
- Department of Chemistry; Indian Institute of Technology Jodhpur; Rajasthan 342037 India
| | - Sreejith S. SreeKumar
- Department of Applied Chemistry; Cochin University of Science and Technology; Kochi 682022, Kerala India
| | - Kalipada Bankura
- Department of Chemistry; Tamralipta Mahavidyalaya; Tamluk-721636, West Bengal India
| | - Dipankar Mishra
- Department of Chemistry; Tamralipta Mahavidyalaya; Tamluk-721636, West Bengal India
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44
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Majumdar D, Biswas JK, Mondal M, Surendra Babu M, Metre RK, Das S, Bankura K, Mishra D. Coordination of N,O-donor appended Schiff base ligand (H 2 L 1 ) towards Zinc(II) in presence of pseudohalides: Syntheses, crystal structures, photoluminescence, antimicrobial activities and Hirshfeld surfaces. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.11.052] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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45
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Li Y, Liu X, Zhang B, Zhao Q, Ning P, Tian S. Aquatic photochemistry of sulfamethazine: multivariate effects of main water constituents and mechanisms. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2018; 20:513-522. [PMID: 29393327 DOI: 10.1039/c7em00548b] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The ubiquity of sulfonamides (SAs) in natural waters requires insight into their environmental fate for ecological risk assessment. Extensive studies focused on the effect of univariate water constituents on the photochemical fate of SAs, yet the multivariate effects of water constituents in environmentally relevant concentrations on SA photodegradation are poorly understood. Here, response surface methodology was employed to explore the integrative effects of main water constituents (dissolved organic matter (DOM), NO3-, HCO3-, Cu2+) on the photodegradation of a representative SA (sulfamethazine). Results showed that besides single factors, interaction of factors also significantly impacted the photodegradation. Radical scavenging experiments indicated that triplet-excited DOM (3DOM*) was responsible for the enhancing effect of DOM on the photodegradation. Additionally, DOM may also quench the 3DOM*-mediated oxidation intermediate of sulfamethazine causing the inhibiting effect of DOM-DOM interaction. We also found that HCO3- was oxidized by triplet-excited sulfamethazine producing CO3˙-, and the high reactivity of CO3˙- with sulfamethazine (second-order rate constant 2.2 × 108 M-1 s-1) determined by laser flash photolysis revealed the enhancing photodegradation mechanism of HCO3-. This study is among the first attempts to probe the photodegradation of SAs considering the integrative effects of water constituents, which is important in accurate ecological risk assessment of organic pollutants in the aquatic environment.
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Affiliation(s)
- Yingjie Li
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China.
| | - Xiangliang Liu
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China.
| | - Biaojun Zhang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China.
| | - Qun Zhao
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China.
| | - Ping Ning
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China.
| | - Senlin Tian
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China.
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46
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Graça CAL, Fugita LTN, de Velosa AC, Teixeira ACSC. Amicarbazone degradation promoted by ZVI-activated persulfate: study of relevant variables for practical application. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:5474-5483. [PMID: 29214480 DOI: 10.1007/s11356-017-0862-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Accepted: 11/28/2017] [Indexed: 06/07/2023]
Abstract
Alarming amounts of organic pollutants are being detected in waterbodies due to their ineffective removal by conventional treatment techniques, which warn of the urgent need of developing new technologies for their remediation. In this context, advanced oxidation processes (AOPs), especially those based on Fenton reactions, have proved to be suitable alternatives, due to their efficacy of removing persistent organic compounds. However, the use of ferrous iron in these processes has several operational constraints; to avoid this, an alternative iron source was here investigated: zero-valent-iron (ZVI). A Fenton-like process based on the activation of a recently explored oxidant-persulfate (PS)-with ZVI was applied to degrade an emerging contaminant: Amicarbazone (AMZ). The influence of ZVI size and source, PS/ZVI ratio, pH, UVA radiation, dissolved O2, and inorganic ions was evaluated in terms of AMZ removal efficiency. So far, this is the first time these parameters are simultaneously investigated, in the same study, to evaluate a ZVI-activated PS process. The radical mechanism was also explored and two radical scavengers were used to determine the identity of major active species taking part in the degradation of AMZ. The degradation efficiency was found to be strongly affected by the ZVI dosage, while positively affected by the PS concentration. The PS/ZVI system enabled AMZ degradation in a wide range of pH, although with a lower efficiency under slightly alkaline conditions. Dissolved O2 revealed to play an important role in reaction kinetics as well as the presence of inorganic ions. UVA radiation seems to improve the degradation kinetics only in the presence of extra O2 content. Radicals quenching experiments indicated that both sulfate (SO4•-) and hydroxyl (•OH) radicals contributed to the overall oxidation performance, but SO4•- was the dominant oxidative species.
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Affiliation(s)
- Cátia A L Graça
- Department of Chemical Engineering, University of São Paulo, Av. Prof. Luciano Gualberto, tr. 3, São Paulo, 380, Brazil.
| | - Lucas T N Fugita
- Department of Chemical Engineering, University of São Paulo, Av. Prof. Luciano Gualberto, tr. 3, São Paulo, 380, Brazil
| | - Adriana Correia de Velosa
- Department of Chemical Engineering, University of São Paulo, Av. Prof. Luciano Gualberto, tr. 3, São Paulo, 380, Brazil
| | - Antonio Carlos S C Teixeira
- Department of Chemical Engineering, University of São Paulo, Av. Prof. Luciano Gualberto, tr. 3, São Paulo, 380, Brazil
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47
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Malik AU, Zhou XL, Kong SN, Li LL, Bao XL, Shu MH. Homochiral hexanuclear nickel( ii) metallocyclic structures with high activity for the photocatalytic degradation of organic dyes. Dalton Trans 2018; 47:1764-1767. [DOI: 10.1039/c7dt04436d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two chiral hexanuclear nickel(ii) metallocyclic rings with new chiral ligands exhibit excellent activity for the photocatalytic degradation of organic dyes.
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Affiliation(s)
- Abaid Ullah Malik
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- People's Republic of China
| | - Xia-li Zhou
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- People's Republic of China
| | - Sheng-nan Kong
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- People's Republic of China
| | - Ling-ling Li
- Instrumental Analysis Center
- Shanghai Jiao Tong University
- Shanghai 200240
- People's Republic of China
| | - Xiao-li Bao
- Instrumental Analysis Center
- Shanghai Jiao Tong University
- Shanghai 200240
- People's Republic of China
| | - Mou-hai Shu
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- People's Republic of China
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48
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Graça CAL, Correia de Velosa A, Teixeira ACSC. Role of Fe(III)-carboxylates in AMZ photodegradation: A response surface study based on a Doehlert experimental design. CHEMOSPHERE 2017; 184:981-991. [PMID: 28658741 DOI: 10.1016/j.chemosphere.2017.06.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 05/31/2017] [Accepted: 06/04/2017] [Indexed: 06/07/2023]
Abstract
Photochemical redox reactions of Fe(III) complexes in surface waters are important sources of radical species, therefore contributing to the sunlight-driven elimination of waterborne recalcitrant contaminants. In this study, the effects of three Fe(III)-carboxylates (i.e., oxalate, citrate, and tartrate) on the UVA photoinduced oxidation of the herbicide amicarbazone (AMZ) were investigated. A Doehlert experimental design was applied to find the Fe(III):ligand ratios and pH that achieved the fastest AMZ degradation rate. The results indicated optimal ratios of 1:10 (Fe(III):oxalate), 1:4 (Fe(III):citrate), and 1:1 (Fe(III):tartrate), with the [Fe(III)]0 set at 0.1 mmol L-1 and the best pH found to be 3.5 for all the complexes. In addition, a statistical model that predicts the observed degradation rate constant (kobs) as a function of pH and Fe(III):carboxylate ratio was obtained for each complex, enabling AMZ-photodegradation predictions based on these two variables. To the best of our knowledge, this is the first time that such models are proposed. Not only the pH-dependent speciation of Fe(III) in solution but also the time profiles of photogenerated OH, Fe(II), and H2O2 gave appropriate support to the experimental results. Additional experiments using a sampled sewage treatment plant effluent suggest that the addition of aqua and/or Fe(III)-oxalate complexes to the matrix may also be effective for AMZ removal from natural waters in case their natural occurrence is not high enough to promote pollutant degradation. Therefore, the inclusion of Fe(III)-complexes in investigations dealing with the environmental fate of emerging pollutants in natural waterbodies is strongly recommended.
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Affiliation(s)
- Cátia A L Graça
- Universidade de São Paulo, Avenida Prof. Luciano Gualberto, tr. 3, 380, São Paulo, Brazil.
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49
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Majumdar D, Babu MSS, Das S, Mohapatra C, Biswas JK, Mondal M. Syntheses, X-ray Crystal Structures, Photoluminescence Properties, Antimicrobial Activities and Hirshfeld Surface of Two New Cd(II) Azide/Thiocyanate Linked Coordination Polymers. ChemistrySelect 2017. [DOI: 10.1002/slct.201700743] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Dhrubajyoti Majumdar
- Department of Chemistry; Tamralipta Mahavidyalaya; Tamluk-721636, West Bengal India
| | - M. S. Surendra Babu
- Department of Chemistry; GITAM University, Hyderabad Campus; Hyderabab-502329 India
| | - Sourav Das
- Department of Chemistry; Institute of Infrastructure Technology Research and Management, Near Khokhara Circle, Maninagar East; Ahmedabad-380026, Gujarat India
| | - Chandrajeet Mohapatra
- Framework Solids Laboratory; Solid State and Structural Chemistry Unit; Indian Institute of Science, Bangalore-560012, India
| | - Jayanta Kumar Biswas
- Department of Ecological Studies & International Centre for Ecological Engineering; University of Kalyani; Kalyani-741235, West Bengal India
| | - Monojit Mondal
- Department of Ecological Studies & International Centre for Ecological Engineering; University of Kalyani; Kalyani-741235, West Bengal India
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50
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Benhamouda K, Belaidi S, Sehili T, Djebbar K. Catalytic Photodegradation of Rhodamine B in the Presence of Natural Iron Oxide and Oxalic Acid under Artificial and Sunlight Radiation. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING 2017. [DOI: 10.1515/ijcre-2016-0027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractNatural iron oxide was used as catalyst for a heterogeneous photo-Fenton-like process and it was characterized by X-ray diffraction, X-ray fluorescence, Raman spectroscopy, scanning electron microscopy and N2adsorption volumetry measurement. Natural iron oxide consists mainly of hematite (76 %). Rhodamine B was mineralized by iron oxide/oxalic acid/UV system, involving creation of dissolved Fe-oxalate and adsorption of Fe-oxalate on the iron oxide surface. The effects of the initial concentration of oxalic acid and pH value, amount of natural iron oxide and concentration of dye, temperature and sunlight irradiation on the kinetics of photodegradation of rhodamine B were investigated. Excellent degradation rate was achieved with 5 mmol.L−1of oxalic acid at a pH around 2–4. During the process, the formation of Fe2+, H2O2and the pH of the solution were strongly dependent on the initial concentration of oxalic acid. Use oft-butanol (2.0 %) confirms that hydroxyl radicals are the entities responsible for the rhodamine B photodegradation. The use of the natural iron oxide as a catalyst in wastewater treatment is very interesting; because it is an abundant mineral and easy to separate from the solution in the end of treatment.
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Affiliation(s)
- K. Benhamouda
- Laboratory of Sciences and Technologies of the Environment (LSTE), University of Constantine, Constantine, Algeria
| | - S. Belaidi
- Laboratory of Sciences and Technologies of the Environment (LSTE), University of Constantine, Constantine, Algeria
| | - T. Sehili
- Laboratory of Sciences and Technologies of the Environment (LSTE), University of Constantine, Constantine, Algeria
| | - K. Djebbar
- Laboratory of Sciences and Technologies of the Environment (LSTE), University of Constantine, Constantine, Algeria
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