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Spellman CD, Da'Er S, Ikuma K, Silverman I, Goodwill JE. Sulfite-activated ferrate for water reuse applications. WATER RESEARCH 2022; 216:118317. [PMID: 35339053 DOI: 10.1016/j.watres.2022.118317] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 03/14/2022] [Accepted: 03/16/2022] [Indexed: 06/14/2023]
Abstract
Ferrate is a promising, emerging water treatment technology. However, there has been limited research on the application of ferrate in a water reuse paradigm. Recent literature has shown that ferrate oxidation of target contaminants could be improved by "activation" with the addition of reductants or acid. This study examined the impact of sulfite-activated ferrate in laboratory water matrix and spiked municipal wastewater effluents with the goal of transforming organic contaminants of concern (e.g., 1,4-dioxane) and inactivating pathogenic organisms. Additionally, the formation of brominated disinfection byproducts by activated ferrate were examined and a proposed reaction pathway for byproduct formation is presented. In particular, the relative importance of reaction intermediates is discussed. This represents the first activated ferrate study to examine 1,4-dioxane transformation, disinfection, and brominated byproduct formation. Results presented show that the sub-stoichiometric ([Sulfite]:[Ferrate] = 0.5) activated ferrate treatment approach can oxidize recalcitrant contaminants by >50%, achieve >4-log inactivation of pathogens, and have relatively limited generation of brominated byproducts. However, stoichiometrically excessive ([Sulfite]:[Ferrate] = 4.0) activation showed decreased performance with decreased disinfection and increased risk of by-product formation. In general, our results indicate that sub-stoichiometric sulfite-activated ferrate seems a viable alternative technology for various modes of water reuse treatment.
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Affiliation(s)
- Charles D Spellman
- Department of Civil and Environmental Engineering, University of Rhode Island, Kingston, RI 02881, United States
| | - Sahar Da'Er
- Department of Civil, Construction and Environmental Engineering, Iowa State University, Ames, IA 50011, United States
| | - Kaoru Ikuma
- Department of Civil, Construction and Environmental Engineering, Iowa State University, Ames, IA 50011, United States
| | | | - Joseph E Goodwill
- Department of Civil and Environmental Engineering, University of Rhode Island, Kingston, RI 02881, United States.
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Bonesi SM, Protti S, Capucciati A, Fagnoni M. Photogenerated aryl mesylate and aryl diethyl phosphate radical cations: a time-resolved spectroscopy investigation. NEW J CHEM 2022. [DOI: 10.1039/d2nj01755e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The photoinduced electron transfer reaction of selected aryl sulfonates and phosphates with K2S2O8 in a MeCN water (9 : 1) mixture has been investigated by LFP experiments.
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Affiliation(s)
- Sergio M. Bonesi
- PhotoGreen Lab, Department of Chemistry, University of Pavia, V.leTaramelli 12, 27100, Pavia, Italy
- Universidad de Buenos Aires, Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Buenos Aires, C1428EGA, Argentina
- CONICET—Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), Ciudad Universitaria, Buenos Aires, C1428EGA, Argentina
| | - Stefano Protti
- PhotoGreen Lab, Department of Chemistry, University of Pavia, V.leTaramelli 12, 27100, Pavia, Italy
| | | | - Maurizio Fagnoni
- PhotoGreen Lab, Department of Chemistry, University of Pavia, V.leTaramelli 12, 27100, Pavia, Italy
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Xiao R, He L, Luo Z, Spinney R, Wei Z, Dionysiou DD, Zhao F. An experimental and theoretical study on the degradation of clonidine by hydroxyl and sulfate radicals. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 710:136333. [PMID: 32050369 DOI: 10.1016/j.scitotenv.2019.136333] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 12/12/2019] [Accepted: 12/23/2019] [Indexed: 06/10/2023]
Abstract
Emerging contaminants such as pharmaceuticals that cannot be completely removed by traditional biological treatments are ubiquitously present in water bodies with detected concentrations ranging from ng L-1 to mg L-1. Advanced oxidation technologies (AOTs) are promising, efficient, and environmentally friendly for the removal of these pharmaceuticals. In this study, we investigated the degradation kinetics of a model pharmaceutical, clonidine (CLD), via hydroxyl radical (OH) in UV/H2O2 and sulfate radical (SO4•-) in UV/peroxydisulfate (PS) systems for the first time. The second-order rate constants (k) of protonated cationic CLD with OH and SO4•- were measured to be (2.15 ± 0.07) × 109 M-1 s-1 and (1.12 ± 0.03) × 109 M-1 s-1, respectively. We also calculated the pKa value of CLD and thermodynamic behaviors for reactions of CLD/HCLD+ with OH and SO4•- at M05-2X/6-311++G**//M05-2X/6-31+G** level with SMD solvation model. The pKa value was calculated to be 8.14, confirming the literature value. H atom abstraction pathway was the most favorable pathway for both OH and SO4•-, while single electron transfer pathway was thermodynamically feasible only for SO4•- for CLD but not for HCLD+. In addition, the reactivities of both tautomeric forms of CLD (i.e., amino and imino CLD) with both radicals were also investigated. This study contributed to a better understanding on the degradation mechanisms of CLD and proposed the possibilities of the elimination of pharmaceuticals by applying AOTs during wastewater treatment processes.
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Affiliation(s)
- Ruiyang Xiao
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha, 410083, China
| | - Lei He
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha, 410083, China
| | - Zonghao Luo
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha, 410083, China
| | - Richard Spinney
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio, 43210, U.S.A
| | - Zongsu Wei
- Centre for Water Technology (WATEC) & Department of Engineering, Aarhus University, Hangøvej 2, DK-8200, Aarhus N, Denmark
| | - Dionysios D Dionysiou
- Environmental Engineering and Science Program, University of Cincinnati, Cincinnati, Ohio, 45221, U.S.A
| | - Feiping Zhao
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha, 410083, China.
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Visible light-mediated photodegradation of imidazoline drugs in the presence of Riboflavin: Possible undesired effects on imidazoline-based eye drops. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2016.09.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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5
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Wu Y, Bianco A, Brigante M, Dong W, de Sainte-Claire P, Hanna K, Mailhot G. Sulfate Radical Photogeneration Using Fe-EDDS: Influence of Critical Parameters and Naturally Occurring Scavengers. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:14343-14349. [PMID: 26554494 DOI: 10.1021/acs.est.5b03316] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
- Yanlin Wu
- Université Clermont Auvergne, Université Blaise Pascal , Institut de Chimie de Clermont-Ferrand, BP 10448, F-63000 CLE Clermont-Ferrand, France
- CNRS , UMR 6296, ICCF, F-63171 Aubière, France
- Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science & Engineering, Fudan University , Shanghai 200433, China
| | - Angelica Bianco
- Université Clermont Auvergne, Université Blaise Pascal , Institut de Chimie de Clermont-Ferrand, BP 10448, F-63000 CLE Clermont-Ferrand, France
- CNRS , UMR 6296, ICCF, F-63171 Aubière, France
| | - Marcello Brigante
- Université Clermont Auvergne, Université Blaise Pascal , Institut de Chimie de Clermont-Ferrand, BP 10448, F-63000 CLE Clermont-Ferrand, France
- CNRS , UMR 6296, ICCF, F-63171 Aubière, France
| | - Wenbo Dong
- Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science & Engineering, Fudan University , Shanghai 200433, China
| | - Pascal de Sainte-Claire
- Université Clermont Auvergne, Université Blaise Pascal , Institut de Chimie de Clermont-Ferrand, BP 10448, F-63000 CLE Clermont-Ferrand, France
- CNRS , UMR 6296, ICCF, F-63171 Aubière, France
| | - Khalil Hanna
- Ecole Nationale Supérieure de Chimie de Rennes UMR CNRS 6226 , 11 Allée de Beaulieu, CS 50837, F-35708 RENNES Cedex 7, France
| | - Gilles Mailhot
- Université Clermont Auvergne, Université Blaise Pascal , Institut de Chimie de Clermont-Ferrand, BP 10448, F-63000 CLE Clermont-Ferrand, France
- CNRS , UMR 6296, ICCF, F-63171 Aubière, France
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