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Erdem CU, Liu C, Karanfil T. Photodegradation of halogenated organic disinfection by-products: Decomposition and reformation. WATER RESEARCH 2023; 245:120565. [PMID: 37683525 DOI: 10.1016/j.watres.2023.120565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 08/16/2023] [Accepted: 08/31/2023] [Indexed: 09/10/2023]
Abstract
In this study, the photodegradation of 33 different DBPs (trihalomethanes, haloacetic acids, haloacetaldehydes, and haloacetonitriles) and TOX with low pressure UV light and the subsequent reformation of DBPs with chlorine and monochloramine were investigated. Results indicated that photodegradation followed the order of TOI > TOBr > TOCl, and treated surface water with low SUVA254 background did not impact the photodegradation of highly UV susceptible DBPs such as triiodomethane (TIM), diiodobromomethane (DIBM), tribromomethane (TBM). The mass balance results of chloride, bromide and iodide showed that the main photodegradation mechanism of TOBr and TOI was dehalogenation supported by halide releases (i.e., Cl-, Br- and/or I- ion). In addition, the photodegradation removal effect was higher, when brominated DBPs formation was high. Although low pressure UV light effectively removed halogenated organic DBPs, subsequent use of disinfectants (Cl2 and NH2Cl) reformed photodegraded DBPs, and the overall DBPs concentrations were increased, which suggested that the released Br- and I- ions will reform DBPs in distribution systems, with oxidants present or added (e.g., booster chlorination) in distribution systems. This study showed that although UV photodegradation will reduce halogenated organic DBPs in distribution systems, especially more toxic iodinated and brominated DBPs, it will be a more effective technology towards the end of the distribution system or a point of entry solution rather than in distribution system with post-disinfection and residence time.
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Affiliation(s)
- Cagri Utku Erdem
- Department of Environmental Engineering and Earth Science, Clemson University, SC, 29634, USA
| | - Chao Liu
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Tanju Karanfil
- Department of Environmental Engineering and Earth Science, Clemson University, SC, 29634, USA.
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Gandhi J, Prakash H. Photo-disinfection Processes for Bacterial Inactivation and Underlying Principles for Water Constituents’ Impact: A Review. CHEMICAL ENGINEERING JOURNAL ADVANCES 2023. [DOI: 10.1016/j.ceja.2023.100482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023] Open
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3
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Song J, Zhao J, Yang C, Liu Y, Yang J, Qi X, Li Z, Shao Z, Wang S, Ji M, Zhai H, Chen Z, Liu W, Li X. Integrated estrogenic effects and semi-volatile organic pollutants profile in secondary and tertiary wastewater treatment effluents in North China. JOURNAL OF HAZARDOUS MATERIALS 2022; 435:128984. [PMID: 35483267 DOI: 10.1016/j.jhazmat.2022.128984] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 04/16/2022] [Accepted: 04/18/2022] [Indexed: 06/14/2023]
Abstract
Endocrine-disrupting effects on aquatic organisms caused by wastewater discharging have raised extensive concerns. However, the efficiency of various wastewater treatment processes to remove estrogenic activity in effluents and the association with organic micropollutants was not well known. We evaluated the estrogenic activity using a well-characterized in vivo bioassay featuring the Chinese rare minnows (Gobiocypris rarus) and analyzed 886 semi-volatile organic compounds (SVOCs) in effluents from four secondary wastewater treatment plants (SWTP A-D) and a tertiary wastewater treatment plant (TTP E) that utilized various common treatment processes in northern China. The final effluents from SWTPs and TTP E all exhibited estrogenic effects, increasing male fish plasma vitellogenin (VTG) contents and estradiol/testosterone (E2/T) ratios. Key regulating genes in the male fish liver including vtg1, vtg3, era, erβ, and cyp19a were upregulated. TTP E demonstrated high performance in reducing estrogenic activity in the effluents, with a reduction of 64% in integrative biomarkers of estrogenic response (IBR). UV disinfection at SWTPs removed IBR by 14%- 33%, while ozone disinfection at TTP E did not reduce IBR. Several SVOCs including alkanes, chlorobenzenes, and phthalates, detected at ng/L to µg/L level, significantly correlated with effluent estrogenic activity. Our findings suggest the necessity and the potential means to improve the efficiency of current wastewater treatment approaches to achieve better protection for aquatic organisms against the joint effects of mixtures of various categories of micropollutants in effluents.
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Affiliation(s)
- Jingyang Song
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Jing Zhao
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Chen Yang
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Yixin Liu
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Jing Yang
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Xiaojuan Qi
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Zechang Li
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Zheng Shao
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Siyu Wang
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Min Ji
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Hongyan Zhai
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Zhiqiang Chen
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (SKLUWRE, HIT), Harbin 150090, China
| | - Wei Liu
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
| | - Xuehua Li
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
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Rerbal B, Ouahrani T. Enhancement of optoelectronic properties of layered MgIn 2 Se 4 compound under uniaxial strain, an ab initio study. THE EUROPEAN PHYSICAL JOURNAL. B 2021; 94:185. [PMID: 34566489 PMCID: PMC8455306 DOI: 10.1140/epjb/s10051-021-00188-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 08/19/2021] [Indexed: 06/13/2023]
Abstract
We argue that tuning the structure of a semiconductor offers abundant scope for use in a number of applications. In this work, by means of comprehensive density functional theory computations, we demonstrated that layered MgIn 2 Se 4 could be a promising candidate for future electronic and optoelectronic technologies. To do this task, we have applied a uniaxial strain in the z-direction. The results show that MgIn 2 Se 4 can support only a - 2.5 % of deformation without losing its dynamical stability. However, we showed that the effect of strain strongly affects the bonding pattern, which tends to increase the bandgap value. Both the charge density and noncovalent interactions were analyzed to understand this behavior. In addition, we saw that the application of non-hydrostatic pressure also enhanced the photocatalytic/optoelectronic performance of the investigated material, offering useful insights into layered MgIn 2 Se 4 for future development in this area.
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Affiliation(s)
- Benali Rerbal
- Laboratory of Materials Discovery, Unit of Research Materials and Renewable Energies, LEPM-URMER, University of Tlemcen, Tlemcen, Algeria
| | - Tarik Ouahrani
- Laboratoire de Physique Théorique, Université de Tlemcen, 13000 Tlemcen, Algeria
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Fujioka T, Kodamatani H, Minh Tran HD, Fujioka A, Hino K, Yoshikawa T, Inoue D, Ikehata K. Degradation of N-nitrosamines and 1,4-dioxane using vacuum ultraviolet irradiation (UV 254+185 nm or UV 172 nm). CHEMOSPHERE 2021; 278:130326. [PMID: 33836400 DOI: 10.1016/j.chemosphere.2021.130326] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 03/01/2021] [Accepted: 03/15/2021] [Indexed: 06/12/2023]
Abstract
Advanced oxidation processes (AOPs) play a vital role in attenuating contaminants of emerging concern (CECs) during potable water reuse. AOPs are conventionally performed by irradiating with a 254-nm low-pressure (LP) mercury-vapor (Hg) ultraviolet (UV) lamp along with chemical treatment. Compared with UV-C light treatment (200-280 nm), vacuum-UV (V-UV) light treatment (100-200 nm) is advantageous in terms of hydroxyl radical generation without the requirement for chemical treatment. This study assessed the potential of V-UV (172-nm Xe2 excimer or 185 + 254-nm LP-Hg) lamps on the destruction of two major CECs in potable water reuse, namely N-nitrosodimethylamine (NDMA) and 1,4-dioxane. Direct irradiation using UV254 nm or UV185+254 nm lamps achieved ≥94% removal of N-nitrosamines, including NDMA, at a UV dose of 900 mJ/cm2. In contrast, the Xe2 excimer lamp (UV172 nm) was less effective for N-nitrosamine removal, achieving up to 82% removal of NDMA. The removal of 1,4-dioxane by V-UV lamps at a UV dose of 900 mJ/cm2 reached 51% (UV172 nm) and 28% (UV185+254 nm), both of which results were superior to that obtained using a conventional UV254 nm lamp (10%). The addition of hydrogen peroxide during UV254 nm or UV185+254 nm irradiation was found to enhance the removal of 1,4-dioxane, while UV172 nm irradiation without hydrogen peroxide addition still exhibited greater efficiencies than those UV254 nm lamps-based AOPs. Overall, this study demonstrated that the removal of both NDMA and 1,4-dioxane can be successfully achieved using either a UV254+185 nm lamp with hydrogen peroxide or a UV172 nm Xe2 excimer lamp without hydrogen peroxide.
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Affiliation(s)
- Takahiro Fujioka
- Graduate School of Engineering, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki, 852-8521, Japan.
| | - Hitoshi Kodamatani
- Graduate School of Science and Engineering, Kagoshima University, 1-21-35 Korimoto, Kagoshima, 890-0065, Japan
| | - Hai Duc Minh Tran
- Graduate School of Engineering, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki, 852-8521, Japan; Faculty of Environmental Engineering, National University of Civil Engineering, 55 Giai Phong Road, 100000, Hanoi, Viet Nam
| | - Atsushi Fujioka
- Toshiba Lighting & Technology Corporation, 5-2-1 Asahimachi, Imabari, 794-0042, Japan
| | - Koki Hino
- Toshiba Lighting & Technology Corporation, 5-2-1 Asahimachi, Imabari, 794-0042, Japan
| | - Takumi Yoshikawa
- Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, 565-0871, Japan
| | - Daisuke Inoue
- Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, 565-0871, Japan
| | - Keisuke Ikehata
- Ingram School of Engineering, Texas State University, 601 University Drive, San Marcos, TX, 78666, USA
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Chang S, Hu Y, Qian J, Shao Y, Ni S, Kong L, Dan W, Luo C, Jin S, Xu X. Mg 2TiO 4 spinel modified by nitrogen doping as a Visible-Light-Active photocatalyst for antibacterial activity. CHEMICAL ENGINEERING JOURNAL (LAUSANNE, SWITZERLAND : 1996) 2021; 410:128410. [PMID: 33519294 PMCID: PMC7833804 DOI: 10.1016/j.cej.2021.128410] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Revised: 12/24/2020] [Accepted: 12/31/2020] [Indexed: 05/22/2023]
Abstract
Nitrogen doped Mg2TiO4 spinel, i.e. Mg2TiO4-xNy, has been synthesized and investigated as a photocatalyst for antibacterial activity. Mg2TiO4-xNy demonstrates superior photocatalytic activity for E. coli disinfection under visible light illumination (λ ≥ 400 nm). Complete disinfection of E. coli at a bacterial cell density of 1.0 × 107 CFU mL-1 can be achieved within merely 60 min. Mg2TiO4-xNy is capable of generating superoxide radicals (•O2 -) under visible light illumination which are the reactive oxygen species (ROSs) for bacteria disinfection. DFT calculations have verified the importance of nitrogen dopants in improving the visible light sensitivity of Mg2TiO4-xNy. The facile synthesis, low cost, good biocompatibility and high disinfection activity of Mg2TiO4-xNy warrant promising applications in the field of water purification and antibacterial products.
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Affiliation(s)
- Shufang Chang
- Clinical and Central Lab, Putuo People's Hospital, Department of Neurosurgery, Tongji Hospital, Tongji University School of Medicine, Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, China
| | - Yiwen Hu
- Clinical and Central Lab, Putuo People's Hospital, Department of Neurosurgery, Tongji Hospital, Tongji University School of Medicine, Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, China
| | - Jun Qian
- Clinical and Central Lab, Putuo People's Hospital, Department of Neurosurgery, Tongji Hospital, Tongji University School of Medicine, Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, China
| | - Yinlin Shao
- Clinical and Central Lab, Putuo People's Hospital, Department of Neurosurgery, Tongji Hospital, Tongji University School of Medicine, Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, China
| | - Shuang Ni
- Science and Technology on Plasma Physics Laboratory, Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900, China
| | - Lulu Kong
- Clinical and Central Lab, Putuo People's Hospital, Department of Neurosurgery, Tongji Hospital, Tongji University School of Medicine, Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, China
| | - Wenyan Dan
- Clinical and Central Lab, Putuo People's Hospital, Department of Neurosurgery, Tongji Hospital, Tongji University School of Medicine, Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, China
| | - Chun Luo
- Clinical and Central Lab, Putuo People's Hospital, Department of Neurosurgery, Tongji Hospital, Tongji University School of Medicine, Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, China
| | - Shu Jin
- Clinical and Central Lab, Putuo People's Hospital, Department of Neurosurgery, Tongji Hospital, Tongji University School of Medicine, Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, China
| | - Xiaoxiang Xu
- Clinical and Central Lab, Putuo People's Hospital, Department of Neurosurgery, Tongji Hospital, Tongji University School of Medicine, Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, China
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7
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Chang S, Hu Y, Qian J, Shao Y, Ni S, Kong L, Dan W, Luo C, Jin S, Xu X. Mg 2TiO 4 spinel modified by nitrogen doping as a Visible-Light-Active photocatalyst for antibacterial activity. CHEMICAL ENGINEERING JOURNAL (LAUSANNE, SWITZERLAND : 1996) 2021; 410:128410. [PMID: 33519294 DOI: 10.1016/j.cej.2021.128412] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Revised: 12/24/2020] [Accepted: 12/31/2020] [Indexed: 05/26/2023]
Abstract
Nitrogen doped Mg2TiO4 spinel, i.e. Mg2TiO4-xNy, has been synthesized and investigated as a photocatalyst for antibacterial activity. Mg2TiO4-xNy demonstrates superior photocatalytic activity for E. coli disinfection under visible light illumination (λ ≥ 400 nm). Complete disinfection of E. coli at a bacterial cell density of 1.0 × 107 CFU mL-1 can be achieved within merely 60 min. Mg2TiO4-xNy is capable of generating superoxide radicals (•O2 -) under visible light illumination which are the reactive oxygen species (ROSs) for bacteria disinfection. DFT calculations have verified the importance of nitrogen dopants in improving the visible light sensitivity of Mg2TiO4-xNy. The facile synthesis, low cost, good biocompatibility and high disinfection activity of Mg2TiO4-xNy warrant promising applications in the field of water purification and antibacterial products.
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Affiliation(s)
- Shufang Chang
- Clinical and Central Lab, Putuo People's Hospital, Department of Neurosurgery, Tongji Hospital, Tongji University School of Medicine, Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, China
| | - Yiwen Hu
- Clinical and Central Lab, Putuo People's Hospital, Department of Neurosurgery, Tongji Hospital, Tongji University School of Medicine, Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, China
| | - Jun Qian
- Clinical and Central Lab, Putuo People's Hospital, Department of Neurosurgery, Tongji Hospital, Tongji University School of Medicine, Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, China
| | - Yinlin Shao
- Clinical and Central Lab, Putuo People's Hospital, Department of Neurosurgery, Tongji Hospital, Tongji University School of Medicine, Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, China
| | - Shuang Ni
- Science and Technology on Plasma Physics Laboratory, Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900, China
| | - Lulu Kong
- Clinical and Central Lab, Putuo People's Hospital, Department of Neurosurgery, Tongji Hospital, Tongji University School of Medicine, Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, China
| | - Wenyan Dan
- Clinical and Central Lab, Putuo People's Hospital, Department of Neurosurgery, Tongji Hospital, Tongji University School of Medicine, Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, China
| | - Chun Luo
- Clinical and Central Lab, Putuo People's Hospital, Department of Neurosurgery, Tongji Hospital, Tongji University School of Medicine, Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, China
| | - Shu Jin
- Clinical and Central Lab, Putuo People's Hospital, Department of Neurosurgery, Tongji Hospital, Tongji University School of Medicine, Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, China
| | - Xiaoxiang Xu
- Clinical and Central Lab, Putuo People's Hospital, Department of Neurosurgery, Tongji Hospital, Tongji University School of Medicine, Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, China
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