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Ye G, Zhou Z, Zhao Z, Zong Y, Chen Z, Lei Z, Wu D. High-efficient M-NC single-atom catalysts for catalytic ozonation in water purification: Performance and mechanisms. JOURNAL OF HAZARDOUS MATERIALS 2024; 477:135289. [PMID: 39053061 DOI: 10.1016/j.jhazmat.2024.135289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 06/17/2024] [Accepted: 07/20/2024] [Indexed: 07/27/2024]
Abstract
Heterogeneous catalytic ozonation (HCO) holds promise in water purification but suffers from limited accessible metal sites, metal leaching, and unclear structure-activity relationships. This work reported M-NC (M=Co, Ni, Fe, and Mn) single-atom catalysts (SACs) with high atomic efficiency and minimal metal release. The new HCO systems, especially the Co-based system, exhibited impressive performance in various refractory contaminant removal, involving various reactive species generation, such as •OHads, •OHfree, *O, and 1O2. For sulfamethoxazole removal, the normalized kobs for Co-NC, Ni-NC, Fe-NC, and Mn-NC were determined as 13.53, 3.94, 3.55, and 4.13 min-1·mMmetal-1·g·m-2 correspondingly, attributed to the abundant acid sites, faster electron transfer, and lower energy required for O3 decomposition and conversion. The metal atoms and hydroxyl groups, individually serving as Lewis and Bronsted acid sites (LAS and BAS), were the primary centers for •OH generation and O3 adsorption. The relationships between active sites and both O3 utilization and •OH generation were found. LAS and BAS were responsible for O3 adsorption, while strong LAS facilitated O3 conversion into •OH. Theoretical calculations revealed the catalytic mechanisms involved O3→ *O→ *OO→ O3•-→ •OH. This work highlights the significance of SAC design for HCO and advances the understanding of atomic-level HCO behavior.
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Affiliation(s)
- Guojie Ye
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science & Engineering, Tongji University, Shanghai 200092, China
| | - Zhengwei Zhou
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science & Engineering, Tongji University, Shanghai 200092, China
| | - Zhenyu Zhao
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science & Engineering, Tongji University, Shanghai 200092, China
| | - Yang Zong
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science & Engineering, Tongji University, Shanghai 200092, China
| | - Zuofeng Chen
- Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai 200092, China
| | - Zhendong Lei
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science & Engineering, Tongji University, Shanghai 200092, China; Key Laboratory of Urban Water Supply, Water Saving and Water Environment Governance in the Yangtze River Delta of Ministry of Water Resources, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Tongji University, Shanghai 200092, China
| | - Deli Wu
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science & Engineering, Tongji University, Shanghai 200092, China; Key Laboratory of Urban Water Supply, Water Saving and Water Environment Governance in the Yangtze River Delta of Ministry of Water Resources, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Tongji University, Shanghai 200092, China.
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Alizadeh M, Hasanzadeh A, Ajalli N, Azamat J. A computational investigation of DMSO/water separation through functionalized GO multilayer nanosheet membrane using molecular dynamics simulation and deep neural network model for membrane performance prediction. CHEMOSPHERE 2024; 349:140802. [PMID: 38048825 DOI: 10.1016/j.chemosphere.2023.140802] [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: 07/16/2023] [Revised: 10/14/2023] [Accepted: 11/22/2023] [Indexed: 12/06/2023]
Abstract
In this molecular dynamics (MD) simulation study, the separation of dimethyl sulfoxide (DMSO) from water was investigated using multilayer functionalized graphene oxide (GO) membranes. The GO nanosheets were modified with chemical groups (-F, -H) to alter their properties. The study analyzed the influence of pressure and functional groups on the separation rate. Additionally, a deep neural network (DNN) model was developed to predict membrane behavior under different conditions in water treatment processes. Results revealed that the fluorine-functionalized membrane exhibited higher permeation compared to the hydrogen-functionalized one, with potential of mean force (PMF) analysis indicating higher energy barriers for water molecules passing through the hydrogen-functionalized membrane. The study used density profile, water density map analysis, and radial distribution function (RDF) analysis to understand water and DMSO molecule interactions. The diffusion coefficient of water molecules was also calculated, showing higher diffusion in the fluorine-functionalized system. Overall, the findings suggest that functionalized GO membranes are effective for DMSO-water separation, with the fluorine-functionalized membrane showing superior performance. The DNN model accurately predicts membrane behavior, contributing to the optimization of membrane separation systems.
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Affiliation(s)
- Mahdi Alizadeh
- Department of Chemical Engineering, Sahand University of Technology, Tabriz, Iran
| | - Abolfazl Hasanzadeh
- Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran
| | - Nima Ajalli
- Department of Chemical Engineering, Babol Noshiravani University of Technology, Babol, Iran
| | - Jafar Azamat
- Department of Chemistry Education, Farhangian University, P.O. Box 14665-889, Tehran, Iran.
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3
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Mir S, Kooshki S. Innovative Method for Water-in-Oil Emulsion Treatment Using Atmospheric Nonthermal-Plasma Technology. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:14459-14473. [PMID: 37734063 DOI: 10.1021/acs.langmuir.3c02268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/23/2023]
Abstract
The field of plasma-liquid interactions is rapidly growing, with increasing publications across applications. While plasma's interactions with water and oil have been researched, there is a notable gap in the study of plasma-emulsion interactions and their practical applications. Investigating plasma-emulsion interactions offers a dual advantage, as demonstrated in this study, as it is applicable to both water/oil separation and emulsion stabilization processes. This study introduces a groundbreaking approach utilizing the fountain dielectric barrier discharge (FDBD) plasma reactor. The reactor exposes a model emulsion to different plasma gases, such as air, nitrogen, argon, and ammonia, along with varying parameters of plasma input voltage and treatment time. Consequently, due to demulsification, the emulsion segregates into distinct water and oil phases. Remarkably, the results demonstrate that short-term plasma treatment leads to the separation of over 99% of emulsified water. However, prolonged exposure to plasma for around 7 min reveals a decrease in the volume of free-separated water, implying the occurrence of stable emulsion formation instead of further demulsification. To optimize experimental conditions for compliance with regulatory requirements, the study employs the response surface methodology (RSM). Adapting pH and separation contours in three-dimensional (3D) RSM plots shows that achieving higher separation is likely associated with higher pH levels in air, nitrogen, and argon plasmas. Notably, the plasma treatment involving ammonia gas elevates the pH level and yields the highest degree of separation compared with air, nitrogen, or argon plasmas.
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Affiliation(s)
- Sonia Mir
- Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), 424 Hafez Avenue, Tehran 15875-4413, Iran
| | - Saeed Kooshki
- Division of Environmental Physics, Faculty of Mathematics, Physics, and Informatics, Comenius University, Mlynská dolina F2, Bratislava 842 48, Slovakia
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Qu W, Tang Z, Wen H, Luo M, Zhong T, Lian Q, Hu L, Tian S, He C, Shu D. Electron Transfer Trade-offs in MOF-Derived Cobalt-Embedded Nitrogen-Doped Carbon Nanotubes Boost Catalytic Ozonation for Gaseous Sulfur-Containing VOC Elimination. ACS Catal 2022. [DOI: 10.1021/acscatal.2c05285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Wei Qu
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou510275, China
| | - Zhuoyun Tang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou510275, China
| | - Hailin Wen
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou510275, China
| | - Manhui Luo
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou510275, China
| | - Tao Zhong
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou510275, China
| | - Qiyu Lian
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou510275, China
| | - Lingling Hu
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou510275, China
| | - Shuanghong Tian
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou510275, China
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou510275, China
| | - Chun He
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou510275, China
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou510275, China
| | - Dong Shu
- School of Chemistry, South China Normal University, Guangzhou510006, China
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5
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Behrouzeh M, Mehdi Parivazh M, Danesh E, Javad Dianat M, Abbasi M, Osfouri S, Rostami A, Sillanpää M, Dibaj M, Akrami M. Application of Photo-Fenton, Electro-Fenton, and Photo-Electro-Fenton processes for the treatment of DMSO and DMAC wastewaters. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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6
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Wang L, Guo X, Ye Q, Qi J, Li P, Yan F. Boosting H 2O 2 Activation for the Efficient Degradation of Dimethyl Sulfoxide-Containing Wastewater over Supported Niobia Catalysts. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c02196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lidong Wang
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding071003, China
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing102206, China
| | - Xiaohan Guo
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding071003, China
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing102206, China
| | - Qingying Ye
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding071003, China
| | - Juanjuan Qi
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding071003, China
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing102206, China
| | - Ping Li
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding071003, China
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing102206, China
| | - Fei Yan
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding071003, China
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing102206, China
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7
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Ajalli N, Alizadeh M, Hasanzadeh A, Khataee A, Azamat J. A theoretical investigation into the effects of functionalized graphene nanosheets on dimethyl sulfoxide separation. CHEMOSPHERE 2022; 297:134183. [PMID: 35248588 DOI: 10.1016/j.chemosphere.2022.134183] [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: 11/20/2021] [Revised: 02/09/2022] [Accepted: 02/28/2022] [Indexed: 06/14/2023]
Abstract
The potential of carbon-based nanosheet membranes with functionalized pores is great as water treatment membranes. Using the molecular dynamic simulation technique, the dimethyl sulfoxide (DMSO) separation from the water/DMSO binary solution is investigated, and the functionalized graphene nanosheets are used as a membrane. This membrane was functionalized by -F (fluorine) and -H (hydrogen) functional groups. For the separation of DMSO, external hydrostatic pressures up to 100 MPa were applied to the considered systems. The separation mechanism was based on molecular size. Multiple analyses were done to study the capability of considered membranes for the separation of DMSO molecules from water. The simulation results have indicated that the graphene membrane with various functional groups was impervious to DMSO molecules, and the water molecules were able to permeate across the membrane's pore with high penetrability. In this regard, the water permeability in 100 MPa was obtained at 3915.5 and 3715.3 L m-2. h-1. bar-1 for fluorinated and hydrogenated pore membranes, respectively. These functionalized graphene membranes have high efficiency, and they can be considered effective modules for water/DMSO binary mixture separations.
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Affiliation(s)
- Nima Ajalli
- Department of Chemical Engineering, Babol Noshiravani University of Technology, Babol, Iran
| | - Mahdi Alizadeh
- Department of Chemical Engineering, Sahand University of Technology, Tabriz, Iran
| | - Abolfazl Hasanzadeh
- Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran
| | - Alireza Khataee
- Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran; Department of Environmental Engineering, Faculty of Engineering, Gebze Technical University, 41400, Gebze, Turkey
| | - Jafar Azamat
- Department of Basic Sciences, Farhangian University, Tehran, Iran.
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8
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Patil PB, Bhandari VM. Solvent-assisted cavitation for enhanced removal of organic pollutants - Degradation of 4-aminophenol. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 311:114857. [PMID: 35278922 DOI: 10.1016/j.jenvman.2022.114857] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 03/02/2022] [Accepted: 03/05/2022] [Indexed: 05/26/2023]
Abstract
A new approach of solvent-assisted cavitation process was proposed for degradation of organic pollutants. The process envisages the use of suitable solvent as an additive, (1-5% v/V), in the conventional cavitation process to enhance the pollutant removal efficiency. A proof of concept was provided for the removal of ammoniacal nitrogen with significantly improved efficiency using solvent-assisted hydrodynamic cavitation (HC) compared to conventional HC. The efficacy of the process was studied on a pilot plant scale (1 m3/h) and using vortex flow based vortex diode as a cavitating device. Degradation studies were carried out using a model pollutant, 4-aminophenol and four different solvents as additives, 1-octanol, cyclohexanol, 1-octane and toluene. Relatively polar solvents were found to increase the efficiency of the pollutant removal (>65%) and also increase the rates to an extent of more than 200%, compared to only HC. A very high removal of ammoniacal nitrogen, more than 90%, was obtained for solvents 1-octanol and cyclohexanol, indicating the importance of the selection of solvent. Per-pass degradation model showed 3 to 4 times increase in the per pass degradation for polar solvents compared to cavitation alone. The results confirm no role of conventional solvent extraction and no specific contamination of wastewater due to the use of solvent as an additive in the process. Further, the cost was 2-3 times lower as compared to the conventional HC. The interesting observations in the proposed process can fuel further research to provide possible improvements in existing methodologies of wastewater treatment, in general, and for removal of ammoniacal nitrogen, in particular.
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Affiliation(s)
- Pravin B Patil
- Chemical Engineering and Process Development Division, CSIR-National Chemical Laboratory, Pune, 411008, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Vinay M Bhandari
- Chemical Engineering and Process Development Division, CSIR-National Chemical Laboratory, Pune, 411008, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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9
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Xie Y, Liu Y, Yao Y, Shi Y, Zhao B, Wang Y. In-situ synthesis of N, S co-doped hollow carbon microspheres for efficient catalytic oxidation of organic contaminants. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.07.055] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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10
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Li X, Deng Y, Zhao Z, Liu Y, Zhang C, Fu Z. A green catalyst-free concomitant air oxidation of DMSO and cumene to form methylsulfonylmethane (dimethylsulfone). J Sulphur Chem 2021. [DOI: 10.1080/17415993.2021.1982943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Xiaolong Li
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Resource Fine-Processing and advanced materials of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, People’s Republic of China
| | - Youer Deng
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Resource Fine-Processing and advanced materials of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, People’s Republic of China
| | - Zhiying Zhao
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Resource Fine-Processing and advanced materials of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, People’s Republic of China
| | - Yachun Liu
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Resource Fine-Processing and advanced materials of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, People’s Republic of China
| | - Chao Zhang
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Resource Fine-Processing and advanced materials of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, People’s Republic of China
| | - Zaihui Fu
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Resource Fine-Processing and advanced materials of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, People’s Republic of China
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Seiwert B, Nihemaiti M, Bauer C, Muschket M, Sauter D, Gnirss R, Reemtsma T. Ozonation products from trace organic chemicals in municipal wastewater and from metformin: peering through the keyhole with supercritical fluid chromatography-mass spectrometry. WATER RESEARCH 2021; 196:117024. [PMID: 33756112 DOI: 10.1016/j.watres.2021.117024] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 02/11/2021] [Accepted: 03/07/2021] [Indexed: 06/12/2023]
Abstract
Ozonation is an important process to further reduce the trace organic chemicals (TrOCs) in treated municipal wastewater before discharge into surface waters, and is expected to form products that are more oxidized and more polar than their parent compounds. Many of these ozonation products (OPs) are biodegradable and thus removed by post-treatment (e.g., aldehydes). Most studies on OPs of TrOCs in wastewater rely on reversed-phase liquid chromatography- mass spectrometry (RPLC-MS), which is not suited for highly polar analytes. In this study, supercritical fluid chromatography combined with high resolution MS (SFC-HRMS) was applied in comparison to the generic RPLC-HRMS to search for OPs in ozonated wastewater treatment plant effluent at pilot-scale. While comparable results were obtained from these two techniques during suspect screenings for known OPs, a total of 23 OPs were only observed by SFC-HRMS via non-targeted screening. Several SFC-only OPs were proposed as the derivatives of methoxymethylmelamines, phenolic sulfates/sulfonates, and metformin; the latter was confirmed by laboratory-scale ozonation experiments. A complete ozonation pathway of metformin, a widespread and extremely hydrophilic TrOC in aquatic environment, was elaborated based on SFC-HRMS analysis. Five of the 10 metformin OPs are reported for the first time in this study. Three different dual-media filters were compared as post-treatments, and a combination of sand/anthracite and fresh post-granular activated carbon proved most effective in OPs removal due to the additional adsorption capacity. However, six SFC-only OPs, two of which originating from metformin, appeared to be persistent during all post-treatments, raising concerns on their occurrence in drinking water sources impacted by wastewater.
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Affiliation(s)
- Bettina Seiwert
- Helmholtz Centre for Environmental Research - UFZ, Department of Analytical Chemistry, Permoserstrasse 15, 04318 Leipzig, Germany
| | - Maolida Nihemaiti
- Helmholtz Centre for Environmental Research - UFZ, Department of Analytical Chemistry, Permoserstrasse 15, 04318 Leipzig, Germany
| | - Coretta Bauer
- Helmholtz Centre for Environmental Research - UFZ, Department of Analytical Chemistry, Permoserstrasse 15, 04318 Leipzig, Germany
| | - Matthias Muschket
- Helmholtz Centre for Environmental Research - UFZ, Department of Analytical Chemistry, Permoserstrasse 15, 04318 Leipzig, Germany
| | - Daniel Sauter
- Berliner Wasserbetriebe, Neue Juedenstr. 1, 10179 Berlin, Germany
| | - Regina Gnirss
- Berliner Wasserbetriebe, Neue Juedenstr. 1, 10179 Berlin, Germany
| | - Thorsten Reemtsma
- Helmholtz Centre for Environmental Research - UFZ, Department of Analytical Chemistry, Permoserstrasse 15, 04318 Leipzig, Germany; University of Leipzig, Institute for Analytical Chemistry, Linnéstrasse 3, 04103 Leipzig, Germany.
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12
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Bui DN, Minh TT. Investigation of TNT red wastewater treatment technology using the combination of advanced oxidation processes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 756:143852. [PMID: 33248762 DOI: 10.1016/j.scitotenv.2020.143852] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 10/19/2020] [Accepted: 11/08/2020] [Indexed: 06/12/2023]
Abstract
Different types of advanced oxidation processes and their combinations such as O3/H2O2/UV, O3/Fenton/UV, O3/TiO2/UV, Fenton/H2O2/UV, Fenton/TiO2/UV, TiO2/H2O2/UV, TiO2/H2O2/O3/UV, TiO2/O3/Fenton/UV, TiO2/H2O2/Fenton/UV and O3/H2O2/Fenton/UV were studied for the treatment of undiluted red wastewater from Z113 Factory. The treatment efficiency was evaluated by analyzing chemical oxygen demand (COD) reduction, % degradation of α-TNT, 2,4-DNT, 2,6-DNT, 2,4-DNT-3-SO3Na and 2,4-DNT-5-SO3Na. Among studied processes Fenton/TiO2/O3/UV was the most effective technology to treat red wastewater. It allows to reduce >99% of COD, α-TNT, 2,4-DNT, 2,6-DNT, 2,4-DNT-3-SO3Na and 2,4-DNT-5-SO3Na after 30 h of treatment with optimum operating conditions: rotation speed of 600 rpm, pH of 4 and temperature of 40 °C. According to the chromatograms obtained by gas chromatograph/mass spectrometer (GC/MS), intermediates of the decomposition of pollutants in red wastewater were identified. GC/MS, HPLC, UV-vis and Bacterial Toxicity test were used to assess effluent quality changes before and after treatment. By economic analysis, the studied process had the potential to apply in practice to treat real wastewater at the Z113 Factory.
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Affiliation(s)
- Dinh Nhi Bui
- Faculty of Environmental Technology, Viet Tri University of Industry, Viet Nam.
| | - Thi Thao Minh
- Faculty of Environmental Technology, Viet Tri University of Industry, Viet Nam
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Wang Y, Duan X, Xie Y, Sun H, Wang S. Nanocarbon-Based Catalytic Ozonation for Aqueous Oxidation: Engineering Defects for Active Sites and Tunable Reaction Pathways. ACS Catal 2020. [DOI: 10.1021/acscatal.0c04232] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Yuxian Wang
- State Key Laboratory of Heavy Oil Processing, State Key Laboratory of Petroleum Pollution Control, China University of Petroleum-Beijing, Beijing 102249, China
| | - Xiaoguang Duan
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Yongbing Xie
- Division of Environment Technology and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
| | - Hongqi Sun
- School of Engineering, Edith Cowan University, Joondalup, Western Australia 6027, Australia
| | - Shaobin Wang
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia 5005, Australia
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Yu G, Wang Y, Cao H, Zhao H, Xie Y. Reactive Oxygen Species and Catalytic Active Sites in Heterogeneous Catalytic Ozonation for Water Purification. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:5931-5946. [PMID: 32324393 DOI: 10.1021/acs.est.0c00575] [Citation(s) in RCA: 130] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Heterogeneous catalytic ozonation (HCO) processes have been widely studied for water purification. The reaction mechanisms of these processes are very complicated because of the simultaneous involvement of gas, solid, and liquid phases. Although typical reaction mechanisms have been established for HCO, some of them are only appropriate for specific systems. The divergence and deficiency in mechanisms hinders the development of novel active catalysts. This critical review compares the various existing mechanisms and categorizes the catalytic oxidation of HCO into radical-based oxidation and nonradical oxidation processes with an in-depth discussion. The catalytic active sites and adsorption behaviors of O3 molecules on the catalyst surface are regarded as the key clues for further elucidating the O3 activation processes, evolution of reactive oxygen species (ROS) or organic oxidation pathways. Moreover, the detection methods of the ROS produced in both types of oxidations and their roles in the destruction of organics are reviewed with discussion of some specific problems among them, including the scavengers selection, experiment results analysis as well as some questionable conclusions. Finally, alternative strategies for the systematic investigation of the HCO mechanism and the prospects for future studies are envisaged.
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Affiliation(s)
- Guangfei Yu
- CAS Key Laboratory of Green Process & Engineering, Beijing Engineering Research Center of Process Pollution Control, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yuxian Wang
- State Key Laboratory of Heavy Oil Processing, State Key Laboratory of Petroleum Pollution Control, China University of Petroleum- Beijing, Beijing 102249, China
| | - Hongbin Cao
- CAS Key Laboratory of Green Process & Engineering, Beijing Engineering Research Center of Process Pollution Control, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - He Zhao
- CAS Key Laboratory of Green Process & Engineering, Beijing Engineering Research Center of Process Pollution Control, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Yongbing Xie
- CAS Key Laboratory of Green Process & Engineering, Beijing Engineering Research Center of Process Pollution Control, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
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15
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Alizadeh S, Fallah N, Nikazar M. Photocatalytic degradation of dimethyl sulphoxide by CdS/TiO
2
core/shell catalyst: A novel measurement method. CAN J CHEM ENG 2019. [DOI: 10.1002/cjce.23635] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Sajad Alizadeh
- Chemical Engineering DepartmentAmirkabir University of Technology Tehran Iran
| | - Narges Fallah
- Chemical Engineering DepartmentAmirkabir University of Technology Tehran Iran
| | - Manouchehr Nikazar
- Chemical Engineering DepartmentAmirkabir University of Technology Tehran Iran
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16
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Wei Z, Li P, Hassan M, Wang P, Xu C, Ren LF, He Y. Employing a novel O 3/H 2O 2 + BiPO 4/UV synergy technique to deal with thiourea-containing photovoltaic wastewater. RSC Adv 2018; 9:450-459. [PMID: 35521572 PMCID: PMC9059259 DOI: 10.1039/c8ra08085b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Accepted: 11/23/2018] [Indexed: 11/21/2022] Open
Abstract
Photovoltaic wastewater contains a large amount of thiourea that cannot be directly treated by biological methods because of its biotoxicity. In this study, a novel O3/H2O2 + BiPO4/UV synergy technique was used as a pre-treatment process to degrade thiourea. The effects of H2O2 and catalyst loading were investigated, and the transformation pathway of thiourea was predicted based on the intermediates detected by UPLC-Vion-IMS-QToF. The synergy technique degraded 89.14% thiourea within only 30 min, and complete degradation occurred after 150 min. The TOC removal of O3/H2O2 + BiPO4/UV was 1.8, 1.5, and 1.9 times that of O3/H2O2 and BiPO4/UV/H2O2 single processes and O3/H2O2 + UV process, respectively, which was due to the synergy between H2O2 residues and BiPO4. In addition, thiourea was mainly degraded by ·OH into thiourea dioxide and melamine (polymerized by other intermediates) and then further degraded into biuret and methyl carbamate by the holes of BiPO4, followed by complete mineralization into H2O and CO2. These results confirm that the O3/H2O2 + BiPO4/UV synergy technique is a promising option for the degradation of thiourea. Photovoltaic wastewater contains a large amount of thiourea that cannot be directly treated by biological methods because of its biotoxicity.![]()
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Affiliation(s)
- Zhikai Wei
- School of Environmental Science and Engineering, Shanghai Jiao Tong University 800 Dongchuan Road 200240 Shanghai PR China +86 21-54744008
| | - Peng Li
- School of Environmental Science and Engineering, Shanghai Jiao Tong University 800 Dongchuan Road 200240 Shanghai PR China +86 21-54744008
| | - Muhammad Hassan
- School of Environmental Science and Engineering, Shanghai Jiao Tong University 800 Dongchuan Road 200240 Shanghai PR China +86 21-54744008
| | - Pu Wang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University 800 Dongchuan Road 200240 Shanghai PR China +86 21-54744008
| | - Cong Xu
- School of Environmental Science and Engineering, Shanghai Jiao Tong University 800 Dongchuan Road 200240 Shanghai PR China +86 21-54744008
| | - Long-Fei Ren
- School of Environmental Science and Engineering, Shanghai Jiao Tong University 800 Dongchuan Road 200240 Shanghai PR China +86 21-54744008
| | - Yiliang He
- School of Environmental Science and Engineering, Shanghai Jiao Tong University 800 Dongchuan Road 200240 Shanghai PR China +86 21-54744008
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17
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Shen T, Wang Q, Tong S. Solid Base MgO/Ceramic Honeycomb Catalytic Ozonation of Acetic Acid in Water. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b02469] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tongdong Shen
- College of Chemical Engineering,
State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China
| | - Qiangwei Wang
- College of Chemical Engineering,
State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China
| | - Shaoping Tong
- College of Chemical Engineering,
State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China
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18
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Study of Different Advanced Oxidation Processes for Wastewater Treatment from Petroleum Bitumen Production at Basic pH. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b01507] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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19
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Barik AJ, Gogate PR. Degradation of 2,4-dichlorophenol using combined approach based on ultrasound, ozone and catalyst. ULTRASONICS SONOCHEMISTRY 2017; 36:517-526. [PMID: 27562908 DOI: 10.1016/j.ultsonch.2016.08.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Revised: 08/11/2016] [Accepted: 08/11/2016] [Indexed: 06/06/2023]
Abstract
The present work investigates the application of ultrasound and ozone operated individually and in combination with catalyst (ZnO and CuO) for establishing the possible synergistic effects for the degradation of 2,4-dichlorophenol. The dependency of extent of degradation on the operating parameters like temperature (over the range of 30-36°C), initial pH (3-9), catalyst as ZnO (loading of 0.025-0.15g/L) and CuO (loading of 0.02-0.1g/L) and initial concentration of 2,4-DCP (20-50ppm) has been established to maximize the efficacy of ultrasound (US) induced degradation. Using only US, the maximum degradation of 2,4-DCP obtained was 28.85% under optimized conditions of initial concentration as 20ppm, pH of 5 and temperature of 34°C. Study of effect of ozone flow rate for approach of only ozone revealed that maximum degradation was obtained at 400mg/h ozone flow rate. The combined approaches such as US+O3, US+ZnO, US+CuO, O3+ZnO, O3+CuO, US+O3+ZnO and US+O3+CuO have been subsequently investigated under optimized conditions and observed to be more efficient as compared to individual approaches. The maximum extent of degradation for the combined operation of US+O3 (400mg/h)+ZnO (0.1g/L) and US+O3 (400mg/h)+CuO (0.08g/L) has been obtained as 95.66% and 97.03% respectively. The degradation products of 2,4-DCP have been identified using GC-MS analysis and the toxicity analysis has also been performed based on the anti-microbial activity test (agar-well diffusion method) for the different treatment strategies. The present work has conclusively established that the combined approach of US+O3+CuO was the most efficient treatment scheme resulting in near complete degradation of 2,4-DCP with production of less toxic intermediates.
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Affiliation(s)
- Arati J Barik
- Chemical Engineering Department, Institute of Chemical Technology, Matunga, Mumbai 400 019, India
| | - Parag R Gogate
- Chemical Engineering Department, Institute of Chemical Technology, Matunga, Mumbai 400 019, India.
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20
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Wang Q, Shen T, Tong S. Effect of Iron Oxide Promoted Sulfated Zirconia on the Oxidative Efficiency of H2O2/O3 for Acetic Acid Degradation in Strong Acidic Water. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b02483] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Qiangwei Wang
- College of Chemical Engineering,
State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China
| | - Tongdong Shen
- College of Chemical Engineering,
State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China
| | - Shaoping Tong
- College of Chemical Engineering,
State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China
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21
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Matira EM, Chen TC, Lu MC, Dalida MLP. Degradation of dimethyl sulfoxide through fluidized-bed Fenton process. JOURNAL OF HAZARDOUS MATERIALS 2015; 300:218-226. [PMID: 26188864 DOI: 10.1016/j.jhazmat.2015.06.069] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 06/17/2015] [Accepted: 06/30/2015] [Indexed: 06/04/2023]
Abstract
Dimethyl sulfoxide (DMSO), one of the most widely used solvent, was subjected to fluidized-bed Fenton oxidation in this study. Fenton oxidation is considered one of the cheapest advanced oxidation processes due to high availability of Fenton's reagents Fe(2+) and H2O2, wherein, Fe(2+) catalyzes hydroxyl radical production from H2O2. Fluidized-bed Fenton process is a modified approach which is also used to address the production of large amount of iron oxide sludge in conventional Fenton process. Parametric study is included in this research using initial conditions of pH 2-7, 0.5-7.25 mM Fe(2+), 5-87.5mM H2O2, and 5-50mM DMSO. Fluidized-bed Fenton oxidation of 5mM DMSO using 68.97 g/L SiO2 carrier at initial conditions of pH 3, 5mM Fe(2+), and 32.5mM H2O2 resulted to 95.22% DMSO degradation, 34.38% TOC removal and 0.304 mM sulfate/mM DMSO0 production in 2h. The study shows that the intermediate product which was most difficult to oxidize and contributed most to the residual TOC was methanesulfonate.
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Affiliation(s)
- Emmanuela M Matira
- Department of Chemical Engineering, University of the Philippines Diliman, Quezon City 1101, Philippines
| | - Teng-Chien Chen
- Department of Green Energy Development Center, Feng Chia University, Taichung 40724, Taiwan
| | - Ming-Chun Lu
- Department of Environmental Resources Management, Chia Nan University of Pharmacy and Science, Tainan 717, Taiwan.
| | - Maria Lourdes P Dalida
- Department of Chemical Engineering, University of the Philippines Diliman, Quezon City 1101, Philippines
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22
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Colades JI, de Luna MDG, Su CC, Lu MC. Treatment of thin film transistor-liquid crystal display (TFT-LCD) wastewater by the electro-Fenton process. Sep Purif Technol 2015. [DOI: 10.1016/j.seppur.2015.02.039] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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23
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Bellotindos LM, Lu MH, Methatham T, Lu MC. Factors affecting degradation of dimethyl sulfoxide (DMSO) by fluidized-bed Fenton process. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2014; 21:14158-14165. [PMID: 25056747 DOI: 10.1007/s11356-014-3320-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Accepted: 07/09/2014] [Indexed: 06/03/2023]
Abstract
In this study, the target compound is dimethyl sulfoxide (DMSO), which is used as a photoresist stripping solvent in the semiconductor and thin-film transistor liquid crystal display (TFT-LCD) manufacturing processes. The effects of the operating parameters (pH, Fe(2+) and H2O2 concentrations) on the degradation of DMSO in the fluidized-bed Fenton process were examined. This study used the Box-Behnken design (BBD) to investigate the optimum conditions of DMSO degradation. The highest DMSO removal was 98 % for pH 3, when the H2O2 to Fe(2+) molar ratio was 12. At pH 2 and 4, the highest DMSO removal was 82 %, when the H2O2 to Fe(2+) molar ratio was 6.5. The correlation of DMSO removal showed that the effect of the parameters on DMSO removal followed the order Fe(2+) > H2O2 > pH. From the BBD prediction, the optimum conditions were pH 3, 5 mM of Fe(2+), and 60 mM of H2O2. The difference between the experimental value (98 %) and the predicted value (96 %) was not significant. The removal efficiencies of DMSO, chemical oxygen demand (COD), total organic carbon (TOC), and iron in the fluidized-bed Fenton process were higher than those in the traditional Fenton process.
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25
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Choban AF, Yurchuk IR, Lyavinets AS. Effect of base nature on the oxidation of dimethyl sulfoxide with hydrogen peroxide in superbasic media. RUSS J GEN CHEM+ 2012. [DOI: 10.1134/s1070363212020144] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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26
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Chen HH, Weng CC, Liao JD, Whang LM, Kang WH. Conversion of emitted dimethyl sulfide into eco-friendly species using low-temperature atmospheric argon micro-plasma system. JOURNAL OF HAZARDOUS MATERIALS 2012; 201-202:185-192. [PMID: 22172460 DOI: 10.1016/j.jhazmat.2011.11.064] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2011] [Revised: 10/15/2011] [Accepted: 11/19/2011] [Indexed: 05/31/2023]
Abstract
A custom-made atmospheric argon micro-plasma system was employed to dissociate dimethyl sulfide (DMS) into a non-foul-smelling species. The proposed system takes the advantages of low energy requirement and non-thermal process with a constant flow rate at ambient condition. In the experiments, the compositions of DMS/argon plasma, the residual gaseous phases, and solid precipitates were respectively characterized using an optical emission spectrometer, various gas-phase analyzers, and X-ray photoemission spectroscopy. For 400 ppm DMS introduced into argon plasma with two pairs of electrodes (90 W), a complete decomposition of DMS was achieved; the DMS became converted into excited species such as C, C(2), H, and CH. When gaseous products were taken away from the treatment area, the excited species tended to recombine and form stable compounds or species, which formed as solid particles and gaseous phases. The solid deposition was likely formed by the agglomeration of C-, H-, and S-containing species that became deposited on the quartz inner tube. For the residual gaseous phases, low-molecular-weight segments mostly recombined into relatively thermodynamic stable species, such as hydrogen, hydrogen sulfide, and carbon disulfide. The dissociation mechanism and treatment efficiency are discussed, and a treatment of converting DMS into H(2)-, CS(2)-, and H(2)S-dominant by-products is proposed.
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Affiliation(s)
- Hsin-Hung Chen
- Department of Materials Science and Engineering, National Cheng Kung University, 1 University Road, Tainan City 70101, Taiwan
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27
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Lee H, Lee E, Lee CH, Lee K. Degradation of chlorotetracycline and bacterial disinfection in livestock wastewater by ozone-based advanced oxidation. J IND ENG CHEM 2011. [DOI: 10.1016/j.jiec.2011.05.006] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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28
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Lei CN, Whang LM, Chen PC. Biological treatment of thin-film transistor liquid crystal display (TFT-LCD) wastewater using aerobic and anoxic/oxic sequencing batch reactors. CHEMOSPHERE 2010; 81:57-64. [PMID: 20705321 DOI: 10.1016/j.chemosphere.2010.07.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2010] [Revised: 07/01/2010] [Accepted: 07/02/2010] [Indexed: 05/29/2023]
Abstract
The amount of pollutants produced during manufacturing processes of thin-film transistor liquid crystal display (TFT-LCD) substantially increases due to an increasing production of the opto-electronic industry in Taiwan. This study presents the treatment performance of one aerobic and one anoxic/oxic (A/O) sequencing batch reactors (SBRs) treating synthetic TFT-LCD wastewater containing dimethyl sulfoxide (DMSO), monoethanolamine (MEA), and tetra-methyl ammonium hydroxide (TMAH). The long-term monitoring results for the aerobic and A/O SBRs demonstrate that stable biodegradation of DMSO, MEA, and TMAH can be achieved without any considerably adverse impacts. The ammonium released during MEA and TMAH degradation can also be completely oxidized to nitrate through nitrification in both SBRs. Batch studies on biodegradation rates for DMSO, MEA, and TMAH under anaerobic, anoxic, and aerobic conditions indicate that effective MEA degradation can be easily achieved under all three conditions examined, while efficient DMSO and TMAH degradation can be attained only under anaerobic and aerobic conditions, respectively. The potential odor problem caused by the formation of malodorous dimethyl sulfide from DMSO degradation under anaerobic conditions, however, requires insightful consideration in treating DMSO-containing wastewater.
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Affiliation(s)
- Chin-Nan Lei
- Department of Environmental Engineering, National Cheng-Kung University, No. 1, University Road, Tainan 701, Taiwan, ROC
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29
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Cojocariu AM, Mutin PH, Dumitriu E, Vioux A, Fajula F, Hulea V. Removal of dimethylsulfoxide from wastewater using mild oxidation with H2O2 over Ti-based catalysts. CHEMOSPHERE 2009; 77:1065-1068. [PMID: 19800653 DOI: 10.1016/j.chemosphere.2009.08.059] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2009] [Revised: 08/28/2009] [Accepted: 08/31/2009] [Indexed: 05/28/2023]
Abstract
The mild catalytic oxidation of dimethylsulfoxide (DMSO) into biodegradable dimethylsulfone is proposed as an efficient pretreatment of wastewaters subjected to biological treatment processes. A SiO(2)-TiO(2) mesoporous xerogel prepared by a non-hydrolytic route, as well as titanium silicalite TS-1 showed very good activity and stability in the catalytic oxidation of DMSO with H(2)O(2) in dilute aqueous solution, at room temperature.
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Affiliation(s)
- Ana Mihaela Cojocariu
- Institut Charles Gerhardt, UMR 5253, CNRS-UM2-ENSCM-UM1, Université Montpellier 2, Place Eugène Bataillon, 34095 Montpellier Cedex 5, France
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