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Li D, Ma XY, Zhang S, Wang YK, Han Y, Chen R, Wang XC, Ngo HH. Aquatic photolysis of high-risk chemicals of emerging concern from secondary effluent mediated by sunlight irradiation for ecological safety and the enhanced methods. WATER RESEARCH 2023; 238:120002. [PMID: 37148692 DOI: 10.1016/j.watres.2023.120002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 04/21/2023] [Accepted: 04/24/2023] [Indexed: 05/08/2023]
Abstract
Natural sunlight can reduce the chemicals of emerging concern (CECs) and biological effects from the discharged domestic wastewater. But the aquatic photolysis and biotoxic variations of specific CECs detected in secondary effluent (SE) were not clear. In this study, 29 CECs were detected in the SE, and 13 medium- and high-risk CECs were identified as target chemicals based on their ecological risk assessment. To comprehensively explore the photolysis properties of the identified target chemicals, the direct and self-sensitized photodegradation of the target chemicals, even the indirect photodegradation in the mixture, were investigated and compared with these photodegradation in the SE. Of the 13 target chemicals, only five chemicals (including dichlorvos (DDVP), mefenamic acid (MEF), diphenhydramine hydrochloride (DPH), chlorpyrifos (CPF), and imidacloprid (IMI)) underwent direct and self-sensitized photodegradation processes. The removal of DDVP, MEF, and DPH was attributed to self-sensitized photodegradation, which was mainly mediated by •OH; CPF and IMI primarily relied on direct photodegradation. Synergistic and/or antagonistic actions that occurred in the mixture improved/decreased the rate constants of five photodegradable target chemicals. Meanwhile, the biotoxicities (acute toxicity and genotoxicity) of the target chemicals (including individual chemicals and the mixture) were significantly reduced, which can explain the reduction of biotoxicities from SE. For the two refractory high-risk chemicals, atrazine (ATZ) and carbendazim (MBC), algae-derived intracellular dissolved organic matter (IOM) on ATZ, and IOM and extracellular dissolved organic matter (EOM) on MBC had slightly promotion for their photodegradation; while peroxysulfate, and peroxymonosulfate served as sensitizers were activated by natural sunlight and effectively improved their photodegradation rate, and then reduced their biotoxicities. These findings will promote the development of CECs treatment technologies based on sunlight irradiation.
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Affiliation(s)
- Danyang Li
- Key Lab of Environmental Engineering (Shaanxi province), School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, PR China
| | - Xiaoyan Y Ma
- Key Lab of Environmental Engineering (Shaanxi province), School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, PR China; International Science & Technology Cooperation Center for Urban Alternative Water Resources Development, Key Laboratory of Northwest Water Resource, Environment and Ecology (Ministry of Education), Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, PR China.
| | - Shiying Zhang
- Key Lab of Environmental Engineering (Shaanxi province), School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, PR China
| | - Yongkun K Wang
- School of Environment and Tourism, West Anhui University, Lùan 237000, PR China
| | - Yingnan Han
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China
| | - Rong Chen
- Key Lab of Environmental Engineering (Shaanxi province), School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, PR China; International Science & Technology Cooperation Center for Urban Alternative Water Resources Development, Key Laboratory of Northwest Water Resource, Environment and Ecology (Ministry of Education), Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, PR China
| | - Xiaochang C Wang
- Key Lab of Environmental Engineering (Shaanxi province), School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, PR China; International Science & Technology Cooperation Center for Urban Alternative Water Resources Development, Key Laboratory of Northwest Water Resource, Environment and Ecology (Ministry of Education), Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, PR China
| | - Huu Hao Ngo
- School of Civil and Environmental Engineering, Faculty of Engineering and Information Technology, University of Technology Sydney, Broadway, NSW 2007, Australia
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Belkessa N, Serhane Y, Bouzaza A, Khezami L, Assadi AA. Gaseous ethylbenzene removal by photocatalytic TiO 2 nanoparticles immobilized on glass fiber tissue under real conditions: evaluation of reactive oxygen species contribution to the photocatalytic process. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:35745-35756. [PMID: 36538222 DOI: 10.1007/s11356-022-24636-8] [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: 09/12/2022] [Accepted: 12/02/2022] [Indexed: 06/17/2023]
Abstract
Photocatalytic oxidation (PCO) using a TiO2 catalyst is an effective technique to remove gaseous volatile organic compounds (VOCs). Herein, a lab-scale continuous reactor is used to investigate the photocatalytic performance toward ethylbenzene (EB) vapor removal over TiO2 nanoparticles immobilized on glass fiber tissue. The role of the reactive species in the removal of EB and the degradation pathway were studied. Firstly, the effect of key operating parameters such as EB concentration (13, 26, 60 mg/m3), relative humidity levels (From 5 to 80%), gas carrier composition (dry air + EB, O2 + EB and N2 + EB) and ultraviolet (UV) radiation wavelength (UV-A 365 nm, UV-C 254 nm) were explored. Then, using superoxide dismutase and tert-butanol as trapping agents, the real contribution of superoxide radical anion (O2.-) and hydroxyl radicals (OH.) to EB removal was quantified. The results show that (i) small water vapor content enhances the EB degradation; (ii) the reaction atmosphere plays an important role in the photocatalytic process; and (iii) oxygen atmosphere/UV-C radiation shows the highest EB degradation percentage. The use of radical scavengers confirms the major contribution of the hydroxyl radical to the photocatalytic mechanism with 75% versus 25% for superoxide radical anion.
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Affiliation(s)
- Nacer Belkessa
- Univ Rennes, École Nationale Supérieure de Chimie de Rennes, CNRS, ISCR (Institut Des Sciences Chimiques de Rennes) - UMR 6226, 35000, Rennes, France
| | - Youcef Serhane
- Univ Rennes, École Nationale Supérieure de Chimie de Rennes, CNRS, ISCR (Institut Des Sciences Chimiques de Rennes) - UMR 6226, 35000, Rennes, France
| | - Abdelkrim Bouzaza
- Univ Rennes, École Nationale Supérieure de Chimie de Rennes, CNRS, ISCR (Institut Des Sciences Chimiques de Rennes) - UMR 6226, 35000, Rennes, France
| | - Lotfi Khezami
- Department of Chemistry, Imam Mohammad Ibn Saud Islamic University (IMSIU), P.O. Box 5701, Riyadh, 11432, Saudi Arabia
| | - Aymen Amin Assadi
- Univ Rennes, École Nationale Supérieure de Chimie de Rennes, CNRS, ISCR (Institut Des Sciences Chimiques de Rennes) - UMR 6226, 35000, Rennes, France.
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3
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Huang F, Gao F, Li C, Campos LC. Photodegradation of free estrogens driven by UV light: Effects of operation mode and water matrix. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 835:155515. [PMID: 35489505 DOI: 10.1016/j.scitotenv.2022.155515] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 04/13/2022] [Accepted: 04/21/2022] [Indexed: 06/14/2023]
Abstract
Estrogens are endocrine disrupting chemicals that have been frequently detected in diverse water matrices (e.g. surface water, wastewater and drinking water) and caused a series of health risks. This study was aimed at investigating the photochemical degradation of free estrogens estrone (E1), 17β-estradiol (E2), estriol (E3), and 17α-ethyl estradiol (EE2) upon the monochromatic irradiation (253.7 nm). Concerning the practical installation of photolysis treatment, exposing the impacts of photoreactor operation mode (stationary or up-flow) and the water matrix (ultrapure water or natural surface water) on the photolytic behaviour of estrogens was of high importance. The pseudo-first-order rate constants showed that E1 was the most susceptible to UV radiation among chosen estrogens due to its high molar absorption coefficient of 402.4 M-1 cm-1 and quantum yield of 0.065 mol E-1 at λ = 253.7 nm. Moreover, the up-flow mode and the surface water matrix collected from a lake in Regent's Park (London) were found to favour the photodegradation of estrogens due to the introduction of more dissolved oxygens and promotion of reactive oxygen species (ROS) formation. These findings may shed light on the photochemical behaviour of estrogens in some specific scenarios.
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Affiliation(s)
- Fan Huang
- Department of Civil, Environmental and Geomatic Engineering, University College London, London WC1E 6BT, United Kingdom
| | - Fan Gao
- Department of Civil, Environmental and Geomatic Engineering, University College London, London WC1E 6BT, United Kingdom
| | - Chaoran Li
- Department of Civil, Environmental and Geomatic Engineering, University College London, London WC1E 6BT, United Kingdom
| | - Luiza C Campos
- Department of Civil, Environmental and Geomatic Engineering, University College London, London WC1E 6BT, United Kingdom.
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Penrose MT, Cobb GP. Identifying potential paraben transformation products and evaluating changes in toxicity as a result of transformation. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2022; 94:e10705. [PMID: 35415920 PMCID: PMC9322577 DOI: 10.1002/wer.10705] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 02/24/2022] [Accepted: 03/06/2022] [Indexed: 06/14/2023]
Abstract
Parabens are a class of compounds often used as preservatives in personal care products, pharmaceuticals, and food. They have received attention recently due to findings that demonstrate estrogenic impacts and other adverse effects of parabens. Release into wastewater effluent is considered a major contributor to the spread of parabens into surface water. Current regulations in areas such as Japan, Europe, and Southeast Asia limit the concentrations of parabens that can be used in formulations but do not address concentrations discharged into waterbodies. Recent studies suggest that parent parabens are effectively eliminated by transformation during the wastewater treatment processes. Common tertiary treatments include ultrafiltration, chlorination, UV disinfection and ozonation. Ultrafiltration is used to remove solids before a disinfection step. Of the disinfection steps, ozonation is often the most effective at removing parabens. Not much is known about the toxicities of paraben transformation products. Of the transformation products, chlorinated parabens and PHBA are the most studied. Previous studies have shown that chlorinated parabens have greatly reduced estrogen agonistic activity when compared with the activity of parents. However, more recent studies have found that halogenated parabens actually have estrogen antagonistic activity. Further research involving chlorinated parabens could include other toxic endpoints. No known studies have evaluated adverse effects of oxygenated parabens. Parabens can interact with chlorine residues in the environment and form chlorinated products, this will occur at a faster rate during chlorination. Ozonation will oxidize parabens and UV disinfection can both oxidize and halogenate parabens. All studies determining potential transformation products have been done in laboratory settings or specific conditions. Further research is needed to determine if these transformations occur in situ. PRACTITIONER POINTS: Common chemical processes utilized by wastewater treatment facilities are effective at transforming parabens. Paraben transformation products are released in greater concentration in effluent than parent paraben compounds. Halogenated transformation products have been identified as estrogen receptor antagonists.
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Affiliation(s)
| | - George P. Cobb
- Department of Environmental ScienceBaylor UniversityWacoTexasUSA
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Klaic M, Jirsa F. 17α-Ethinylestradiol (EE2): concentrations in the environment and methods for wastewater treatment – an update. RSC Adv 2022; 12:12794-12805. [PMID: 35496331 PMCID: PMC9044539 DOI: 10.1039/d2ra00915c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 04/20/2022] [Indexed: 11/24/2022] Open
Abstract
17α-Ethinylestradiol (EE2) is a frequently used drug and an endocrine disruptive substance. Adverse effects on biota have been reported when they are exposed to this substance in the environment. The last review on EE2 in the environment was published in 2014. Since then, well above 70 studies on EE2 and related substances have been published. The aim of this review was therefore to bring together recent data with earlier ones. The topics emphasized were observable trends of environmental levels of EE2 and methods to reduce EE2 levels in wastewater, before it can enter the environment. This should give an overview of the recent knowledge and developments regarding these environmental aspects of EE2. In the studies discussed, EE2 levels in surface waters were well detectable in many countries, both above and below the predicted no effect concentration (PNEC) of 0.035 ng L−1, although analytical methods used for the quantification often are unsatisfactory regarding their limit of detection. To support the degradation of EE2 prior to entry into the environment, appropriate treatment methods could help to control the emissions of EE2. Several methods for the reduction of EE2 levels of up to 100% removal efficiency were reported recently and are of chemical, biological, adsorptive or ion-exchange nature. Depending on the required properties like initial EE2 concentration or treatment duration, several promising methods are available. 17α-Ethinylestradiol (EE2) is a frequently used drug and an endocrine disruptive substance.![]()
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Affiliation(s)
- Marko Klaic
- Department of Inorganic Chemistry, University of Vienna, Waehringer Str. 42, 1090 Vienna, Austria
| | - Franz Jirsa
- Department of Inorganic Chemistry, University of Vienna, Waehringer Str. 42, 1090 Vienna, Austria
- Department of Zoology, University of Johannesburg, Auckland Park, 2006 Johannesburg, South Africa
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Baştürk E, Karataş M. Removal of pharmaceuticals by advanced treatment methods. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 300:113808. [PMID: 34649316 DOI: 10.1016/j.jenvman.2021.113808] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 09/12/2021] [Accepted: 09/20/2021] [Indexed: 06/13/2023]
Abstract
The removal of endocrine disrupting compounds (EDCs) remains a big challenge in water treatment in terms of public health. The aim of the study was evaluating the performance of nano TiO2, ozone, and UV system for removal of EDCs. In this study, the efficiency of the nano TiO2 to degrade target EDCs under catalytic and photocatalytic ozonation was examined at different operational conditions. The maximum removal of target pollutant was obtained with pH 6.8; ozone concentration 10 mg/L; catalyst dosage 0.050 g/L and the duration time of the photocatalytic performances was 10 min showing the most treatment conditions respectively. In addition, the surface reaction mechanism of endocrine disrupting compound removal by catalytic and photocatalytic ozonation was investigated. The results showed that the catalyst can significantly enhance the removal of target compound. The 99.0%, 88.3% and 51.8% removal rates were obtained at photocatalytic ozonation, catalytic ozonation and sole ozonation, respectively. These results indicated that the Ozone/TiO2/UV process was favorable for engineering applications for removal of endocrine disrupting compounds such as steroid hormone and likely similar micro pollutants.
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Affiliation(s)
- Emine Baştürk
- Aksaray University, Faculty of Engineering, Department of Environmental Engineering, 68100, Aksaray, Turkey; Department of Environmental Protection Technologies, Technical Sciences Vocational School, Aksaray University, 68100, Aksaray, Turkey.
| | - Mustafa Karataş
- Aksaray University, Faculty of Engineering, Department of Environmental Engineering, 68100, Aksaray, Turkey
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Application and ecotoxicological evaluation of UV-assisted peroxidation for degradation of 17α-ethinylestradiol in aqueous media. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2021. [DOI: 10.1007/s43153-021-00122-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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8
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Chaves FP, Gomes G, Della-Flora A, Dallegrave A, Sirtori C, Saggioro EM, Bila DM. Comparative endocrine disrupting compound removal from real wastewater by UV/Cl and UV/H 2O 2: Effect of pH, estrogenic activity, transformation products and toxicity. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 746:141041. [PMID: 32768778 DOI: 10.1016/j.scitotenv.2020.141041] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 07/13/2020] [Accepted: 07/16/2020] [Indexed: 06/11/2023]
Abstract
Extensive use of endocrine disruptor compounds (EDCs) and their release through various pathways into the environment are emerging environmental concerns. In this context, H2O2 and chlorine UV-based treatments were carried out to evaluate their efficiency in the removal of the bisphenol A (BPA), 17β-estradiol (E2) and 17α-ethinylestradiol (EE2) at 100 μg L-1 from ultrapure water and from wastewater treatment plants (WWTP). Photolysis was performed under different irradiation sources, i.e. UVC and UVA. The effect of H2O2 (3 and 30 mg·L-1), free chlorine concentrations (1 and 2 mg·L-1) and pH (5, 7 and 9) were also investigated. Toxicity (Raphidocelis subcapitata) and estrogenic activity (yeast estrogen screen - YES assay) were assessed during the processes. Compound removal at optimal operating parameters reached 100% after 15 and 2 min for UVC/H2O2 (pH 9 and 3 mg L-1 of H2O2), and UVC/Cl (pH 9 and 2 mg L-1 of chlorine), respectively. Total organic carbon (TOC) removal achieved 37% and 45% for the H2O2 and Cl-UV based process, respectively. The in vitro YES assay indicated that the formed by-products were non-estrogenic compounds, while the toxicity evaluation revealed high cell growth inhibition due to UVC/Cl byproducts. During the UV-based processes, 30 transformation products (TPs) were identified, in which three new chlorinated TPs from E2 and EE2 may be responsible for toxicity effects. EDC degradation by UV/Cl is faster than by UV/H2O2, although chlorinated toxic byproducts were also formed during the UV/Cl process.
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Affiliation(s)
- Fernanda Pereira Chaves
- Department of Sanitary and Environment Engineering, State University of Rio de Janeiro, 524 São Francisco Xavier Street, room 5029-F, 20550-900 Rio de Janeiro, Brazil
| | - Giselle Gomes
- Department of Sanitary and Environment Engineering, State University of Rio de Janeiro, 524 São Francisco Xavier Street, room 5029-F, 20550-900 Rio de Janeiro, Brazil
| | - Alexandre Della-Flora
- Instituto de Química, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, CEP 91501-970 Porto Alegre, RS, Brazil
| | - Alexsandro Dallegrave
- Instituto de Química, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, CEP 91501-970 Porto Alegre, RS, Brazil
| | - Carla Sirtori
- Instituto de Química, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, CEP 91501-970 Porto Alegre, RS, Brazil
| | - Enrico Mendes Saggioro
- Center of Studies on Worker's Health and Human Ecology, Sergio Arouca National School of Public Health, Oswaldo Cruz Foundation, Av. Leopoldo Bulhões, 1480, 21041-210 Rio de Janeiro, RJ, Brazil; Sanitation and Environment Health Department, Sergio Arouca National School of Public Health, Oswaldo Cruz Foundation, Av. Leopoldo Bulhões, 1480, 21041-210 Rio de Janeiro, RJ, Brazil.
| | - Daniele Maia Bila
- Department of Sanitary and Environment Engineering, State University of Rio de Janeiro, 524 São Francisco Xavier Street, room 5029-F, 20550-900 Rio de Janeiro, Brazil.
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Tran TN, Kim DG, Ko SO. Efficient removal of 17α-ethinylestradiol from secondary wastewater treatment effluent by a biofilm process incorporating biogenic manganese oxide and Pseudomonas putida strain MnB1. JOURNAL OF HAZARDOUS MATERIALS 2020; 398:122810. [PMID: 32516724 DOI: 10.1016/j.jhazmat.2020.122810] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 04/28/2020] [Accepted: 05/04/2020] [Indexed: 06/11/2023]
Abstract
This study proposes a biofilm process to immobilize biogenic manganese oxide (BMO) and Pseudomonas putida MnB1 (BMO-MnB1), which shows excellent synergistic effects for 17α-ethinylestradiol (EE2) from secondary wastewater treatment effluent (WWTE). Modified granular activated carbon (M-GAC) was used as the packing carrier, inoculated with Pseudomonas putida MnB1 and Mn(II) to form the BMO-MnB1 biofilm. Feasibility tests were performed to compare the EE2 removal efficiency with that of the conventional biofilm process (BAC) for heterogeneous microbial communities. Results show that in the BAC, EE2 was removed mainly by adsorption, with biodegradation contributing only slightly to the overall performance. In contrast, the BMO-MnB1 biofilter outperformed the BAC. Furthermore, less than 4% of the total EE2 removed was extracted from the biofilter medium over 150 days of operation, confirming that EE2 was biodegraded by P. putida MnB1 or chemically oxidized by BMO. Our results suggest that BMO-MnB1 biofilm processes have high potential for practical applications in removal of endocrine disrupting compounds from wastewater effluent.
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Affiliation(s)
- Thi Nhung Tran
- Department of Civil Engineering, Kyung Hee University, Seocheon-dong, Giheung-gu, Yongin, 446-701, Republic of Korea.
| | - Do-Gun Kim
- Department of Civil Engineering, Kyung Hee University, Seocheon-dong, Giheung-gu, Yongin, 446-701, Republic of Korea.
| | - Seok-Oh Ko
- Department of Civil Engineering, Kyung Hee University, Seocheon-dong, Giheung-gu, Yongin, 446-701, Republic of Korea.
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Zhen Y, Zhang Q, Zhang X, Zhang G, Chen X, Zhao C. A novel tubular up-flow magnetic film photocatalytic system optimized by main factors control for efficient removal of chlorophenols wastewater. JOURNAL OF HAZARDOUS MATERIALS 2020; 398:122963. [PMID: 32512454 DOI: 10.1016/j.jhazmat.2020.122963] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 04/29/2020] [Accepted: 05/12/2020] [Indexed: 06/11/2023]
Abstract
Chlorophenols (CPs) are still used as raw material or intermediate in some industries. Photocatalytic oxidation is free from secondary pollution, but the efficiency is restricted by some main factors. In this study, a novel high efficiency tubular up-flow magnetic film (TUMF) photocatalytic system was investigated based on the magnetic lanthanum doping core-shell Fe3O4@SiO2@TiO2 (La-FST) nanoparticles. When the dosage of La-FST was 0.4 g/L, the flow velocity was 94.2 mL/min, and the circulated irradiation of 15 W maintained 40 min, the average removal rate of 2,4-dichlorophenol (2,4-DCP) was reduced significantly from 10 mg/L to 0.0803 mg/L by TUMF system, meeting the limits of the particular items (0.093 mg/L) from national environmental quality standards for surface water, avoiding the problem of photocatalyst separation and loss. The photoinduced holes (h+) was the key active radical to oxidize 2,4-DCP, and the main factors of TUMF system could be well controlled to achieve satisfactory effluent quality. A prediction method of photocatalytic reaction time in a multistage series TUMF system was established to remove 2,4-DCP from 100 mg/L to 0.5 mg/L, saving 86 min. The novel high-efficiency TUMF system provides a technical selection for the photocatalytic degradation of CPs and other refractory organics.
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Affiliation(s)
- Yichen Zhen
- College of Chemistry and Environmental Science, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province, Baoding 071002, China.
| | - Qiang Zhang
- College of Chemistry and Environmental Science, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province, Baoding 071002, China.
| | - Xiaoyan Zhang
- College of Chemistry and Environmental Science, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province, Baoding 071002, China.
| | - Guanteng Zhang
- College of Chemistry and Environmental Science, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province, Baoding 071002, China.
| | - Xiaoxin Chen
- College of Chemistry and Environmental Science, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province, Baoding 071002, China.
| | - Chunxia Zhao
- College of Chemistry and Environmental Science, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province, Baoding 071002, China.
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V VK, Avisar D, V LP, Betzalel Y, Mamane H. Rapid visible-light degradation of EE2 and its estrogenicity in hospital wastewater by crystalline promoted g-C 3N 4. JOURNAL OF HAZARDOUS MATERIALS 2020; 398:122880. [PMID: 32768817 DOI: 10.1016/j.jhazmat.2020.122880] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 04/30/2020] [Accepted: 05/04/2020] [Indexed: 06/11/2023]
Abstract
Metal-free, chemically activated crystalline graphitic carbon nitride (g-C3N4) nanorods with enhanced visible-light photoactivity demonstrated rapid photodegradation of 17α-ethinylestradiol (EE2) in water and real hospital wastewater. Pure g-C3N4 and another three crystalline promoted g-C3N4 photocatalysts developed by hydrothermal method were characterized by, High-Resolution Transmission Electron Microscopy (HRTEM), X-ray diffraction (XRD), Fourier-Transform Infrared spectroscopy (FTIR), Brunauer-Emmett-Teller (BET), Photoluminescence (PL), Electron spin resonance (ESR), X-ray Photoelectron Spectroscopy (XPS) and Diffuse Reflectance Spectroscopy (DRS). Hydrothermal-based chemical activation did not alter the crystal structure, functional group or surface morphology, but it enhanced the specific surface area of activated g-C3N4 due to intralayer delamination and depolymerization of g-C3N4. Compared to pure g-C3N4, the activated g-C3N4-3 demonstrated efficient degradation of EE2 (<30 min, 3 mg/l) by visible wavelengths of the solar spectrum. This work provides advanced insight into the construction of heterojunction visible-light photocatalysts and production of O2- via reduction of O2 with photogenerated electrons. Proposed and derived mechanism for photodegradation of EE2 by g-C3N4-3 using gas chromatography-mass spectrometry (GCMS). Yeast Estrogen Screen (YES) was performed to evaluate the estrogenicity of treated water samples. Efficient removal of EE2 estrogenic activity (<45 min, 3 mg/l) was achieved using the visible light-activated g-C3N4. Estrogenicity removal rate corresponded well with EE2-degradation rate.
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Affiliation(s)
- Vinod Kumar V
- School of Mechanical Engineering, Water Research Center, Environmental Engineering Program, Faculty of Engineering, Tel Aviv University, Tel Aviv, 69978, Israel.
| | - Dror Avisar
- The Water Research Center, The Hydro-Chemistry Laboratory, Porter School for Environment and Earth Sciences, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, 69978, Israel
| | - Lakshmi Prasanna V
- The Water Research Center, The Hydro-Chemistry Laboratory, Porter School for Environment and Earth Sciences, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, 69978, Israel
| | - Yifaat Betzalel
- School of Mechanical Engineering, Water Research Center, Environmental Engineering Program, Faculty of Engineering, Tel Aviv University, Tel Aviv, 69978, Israel
| | - Hadas Mamane
- School of Mechanical Engineering, Water Research Center, Environmental Engineering Program, Faculty of Engineering, Tel Aviv University, Tel Aviv, 69978, Israel
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Zhang S, Meng W, Wang L, Li L, Long Y, Hei Y, Zhou L, Wu S, Zheng Z, Luo L, Jiang F. Preparation of Nano-Copper Sulfide and Its Adsorption Properties for 17α-Ethynyl Estradiol. NANOSCALE RESEARCH LETTERS 2020; 15:48. [PMID: 32088775 PMCID: PMC7036085 DOI: 10.1186/s11671-020-3274-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 02/04/2020] [Indexed: 05/03/2023]
Abstract
In the present work, a tubular nano-copper sulfide was successfully synthesized by hydrothermal method. The physical and chemical properties of the prepared materials were characterized by XRD, SEM, TEM, and BET. The synthesized copper sulfide was used as an adsorbent for removing 17α-ethynyl estradiol (EE2) and exhibited excellent adsorption properties. At 25 °C, 15 mg of adsorbent was applied for 50 mL of 5 mg/L EE2 solution, adsorption equilibrium was reached after 180 min, and the adsorption rate reached nearly 90%. In addition, the kinetics, isothermal adsorption, and thermodynamics of the adsorption process were discussed on the basis of theoretical calculations and experimental results. The theoretical maximum adsorption capacity of copper sulfide was calculated to be 147.06 mg/g. The results of this study indicated that copper sulfide was a stable and efficient adsorbent with promising practical applications.
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Affiliation(s)
- Sifeng Zhang
- School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
| | - Wenxiang Meng
- School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
| | - Lulu Wang
- School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
| | - Lingxin Li
- School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
| | - Yanju Long
- School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
| | - Yunrui Hei
- School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
| | - Luting Zhou
- School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
| | - Shenglan Wu
- School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
| | - Ziguang Zheng
- School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
| | - Lijun Luo
- School of Chemistry and Environment, Yunnan Minzu University, Kunming, 650500, China
| | - Fengzhi Jiang
- School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China.
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13
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Zou J, Cai H, Wang D, Xiao J, Zhou Z, Yuan B. Spectrophotometric determination of trace hydrogen peroxide via the oxidative coloration of DPD using a Fenton system. CHEMOSPHERE 2019; 224:646-652. [PMID: 30849625 DOI: 10.1016/j.chemosphere.2019.03.005] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 02/23/2019] [Accepted: 03/02/2019] [Indexed: 06/09/2023]
Abstract
A low-cost and environmentally-friendly spectrophotometric method for hydrogen peroxide (H2O2) determination based on the oxidative coloration reaction of N,N'-diethyl-p-phenylenediamine (DPD) via the Fenton reactions in aqueous water was established. The generated pink radical cation (DPD+) showed maximum absorption at 551 nm. Importantly, under the optimal conditions (pH 3.0, 20 mM DPD, 1.5 mM Fe(II) and reaction time of 45 s), the increase in absorbance at 551 nm for DPD+ generation was linear with respect to the addition of H2O2 (0-12 μM). The sensitivity and the detection limit of the proposed Fenton-DPD method for H2O2 determination at 551 nm were (2.55 ± 0.01) × 104 M-1 cm-1 and 0.05 μM, respectively. The stoichiometric factor for the reaction of H2O2 with DPD was 1:1.18. The absorbance of the generated DPD+ was found to be stable in different types of water within 20 min. Moreover, the proposed Fenton-DPD method could be used for the analysis of the trace H2O2 in rainwater and determine the rate constants that involved H2O2 with high accuracy.
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Affiliation(s)
- Jing Zou
- Institute of Municipal and Environmental Engineering, College of Civil Engineering, Huaqiao University, Xiamen, Fujian 361021, PR China
| | - Huahua Cai
- Institute of Municipal and Environmental Engineering, College of Civil Engineering, Huaqiao University, Xiamen, Fujian 361021, PR China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Daiyao Wang
- Institute of Municipal and Environmental Engineering, College of Civil Engineering, Huaqiao University, Xiamen, Fujian 361021, PR China
| | - Junyang Xiao
- Institute of Municipal and Environmental Engineering, College of Civil Engineering, Huaqiao University, Xiamen, Fujian 361021, PR China
| | - Zhenming Zhou
- Institute of Municipal and Environmental Engineering, College of Civil Engineering, Huaqiao University, Xiamen, Fujian 361021, PR China
| | - Baoling Yuan
- Institute of Municipal and Environmental Engineering, College of Civil Engineering, Huaqiao University, Xiamen, Fujian 361021, PR China.
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14
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Huang B, Lai C, Dai H, Mu K, Xu Z, Gu L, Pan X. Microbially reduced humic acid promotes the anaerobic photodegradation of 17α--ethinylestradiol. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 171:313-320. [PMID: 30612019 DOI: 10.1016/j.ecoenv.2018.12.081] [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] [Received: 08/27/2018] [Revised: 12/07/2018] [Accepted: 12/24/2018] [Indexed: 06/09/2023]
Abstract
Photolysis and microbial activity are relatively obvious in shallow, eutrophic waters with low dissolved oxygen content. Ubiquitous humic acid (HA) can act as electron acceptor and be reduced by bacterial under such conditions, and the reduced form of humic acid (RHA) plays an important role in the photolysis contaminants. In this study, anaerobic 17α-ethinylestradiol (EE2) photodegradation was performed along with biodegradation by Shewanella putrefaciens mediated by HA. The mechanism of such coupled photolysis and biodegradation of EE2 was thus elucidated. The removal rate in such coupled degradation in the presence of 10 mgC L-1 of HA at pH 8.0 was greater than that of either photolysis or biodegradation alone. HA which had been reduced in a double-chamber microbial fuel cell showed better promotion to EE2 photodegradation than fresh HA. Reactive species scavenging experiments indicated that hydroxyl radical and excited triplet states of HA were primary contributors to EE2 photodegradation in anaerobic conditions. More of them were produced from RHA than from pristine HA. Besides, the degraded EE2 solutions inhibited the proliferation of MCF-7 human cancer Cells. These findings improve our understanding of the environmental transformation of EE2 in the shallow, anoxic waters.
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Affiliation(s)
- Bin Huang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
| | - Chaochao Lai
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
| | - Han Dai
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
| | - Kailin Mu
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
| | - Zhixiang Xu
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
| | - Lipeng Gu
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
| | - Xuejun Pan
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China.
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15
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Frontistis Z. Degradation of the Nonsteroidal Anti-Inflammatory Drug Piroxicam by Iron Activated Persulfate: The Role of Water Matrix and Ultrasound Synergy. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2018; 15:E2600. [PMID: 30469354 PMCID: PMC6265816 DOI: 10.3390/ijerph15112600] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 11/15/2018] [Accepted: 11/18/2018] [Indexed: 12/18/2022]
Abstract
This work examined the oxidation of Piroxicam (PIR), a representative nonsteroidal anti-inflammatory drug using iron activated persulfate. The effect of persulfate dosing was vital for the efficiency of the process. The addition of 20 mg/L sodium persulfate (SPS) eliminated 500 μg/L of PIR in less than 20 min at natural pH. PIR decomposition followed pseudo-first-order kinetics, and the observed kinetic constant increased by 2.1 times when the initial concentration of PIR decreased from 2000 to 250 μg/L. Acidic pH favored the PIR destruction, while both sulfate and hydroxyl radicals are involved in PIR destruction at natural pH. The effect of inorganic ions like bicarbonate and chlorides was almost insignificant on PIR removal. The presence of humic acid reduced PIR removal from 100% to 67% after 20 min of treatment with 2 mg/L Fe2+ and 20 mg/L SPS. The experiment that was performed with bottled water showed similar efficiency with ultrapure water, while in the case of secondary effluent, PIR removal decreased by 26% after 30 min of treatment. The Fe2+/SPS/ultrasound hybrid process showed a low degree of synergy (18.3%). The ecotoxicity of aqueous solution using the Vibrio fischeri as an indicator was reduced during the treatment, although with a different trend from the removal of PIR, possibly due to byproducts derived from the oxidation of secondary effluent and PIR.
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Affiliation(s)
- Zacharias Frontistis
- Department of Environmental Engineering, University of Western Macedonia, GR-50100 Kozani, Greece.
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16
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Bartolomeu M, Neves MGPMS, Faustino MAF, Almeida A. Wastewater chemical contaminants: remediation by advanced oxidation processes. Photochem Photobiol Sci 2018; 17:1573-1598. [PMID: 30328883 DOI: 10.1039/c8pp00249e] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Approximately 70% of the terrestrial area is covered with water, but only a small water fraction is compatible with terrestrial life forms. Due to the increment in human consumption, the need for water resources is increasing, and it is estimated that more than 40% of the population worldwide will face water stress/scarcity within the next few decades. Water recycling and reuse may offer the opportunity to expand water resources. For that, the wastewater treatment paradigm should be changed and adequately treated wastewater should be seen as a valuable resource instead of a waste product. It is easily understandable that the exact composition and constituent concentration of wastewater vary according to its different sources (industrial, agricultural, urban usage of water). Consequently, a variety of known and emerging pollutants like heavy metals, antibiotics, pesticides, phthalates, polyaromatic hydrocarbons, halogenated compounds and endocrine disruptors have been found in natural water reservoirs, due to the limited effectiveness of conventional wastewater treatment. The conventional approach consists of a combination of physical, chemical and biological processes, aiming at the removal of large sediments such as heavier solids, scum and grease and of organic content in order to avoid the growth of microorganisms and eutrophication of the receiving water bodies. However, this approach is not sufficient to reduce the chemical pollutants and much less the emerging chemical pollutants. In this review, after some considerations concerning chemical pollutants and the problematic efficiency of their removal by conventional methods, an update is presented on the successes and challenges of novel approaches for wastewater remediation based on advanced oxidation processes. An insight into wastewater remediation involving the photodynamic approach mediated by tetrapyrrolic derivatives will be underlined.
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Affiliation(s)
- M Bartolomeu
- Department of Biology and CESAM, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - M G P M S Neves
- Department of Chemistry and QOPNA, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - M A F Faustino
- Department of Chemistry and QOPNA, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - A Almeida
- Department of Biology and CESAM, University of Aveiro, 3810-193 Aveiro, Portugal.
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17
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Díez AM, Ribeiro AS, Sanromán MA, Pazos M. Optimization of photo-Fenton process for the treatment of prednisolone. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:27768-27782. [PMID: 29600382 DOI: 10.1007/s11356-018-1782-z] [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: 10/09/2017] [Accepted: 03/14/2018] [Indexed: 06/08/2023]
Abstract
Prednisolone is a widely prescribed synthetic glucocorticoid and stated to be toxic to a number of non-target aquatic organisms. Its extensive consumption generates environmental concern due to its detection in wastewater samples at concentrations ranged from ng/L to μg/L that requests the application of suitable degradation processes. Regarding the actual treatment options, advanced oxidation processes (AOPs) are presented as a viable alternative. In this work, the comparison in terms of pollutant removal and energetic efficiencies, between different AOPs such as Fenton (F), photo-Fenton (UV/F), photolysis (UV), and hydrogen peroxide/photolysis (UV/H2O2), was carried out. Light diode emission (LED) was the selected source to provide the UV radiation. The UV/F process revealed the best performance, reaching high levels of both degradation and mineralization with low energy consumption. Its optimization was conducted and the operational parameters were iron and H2O2 concentrations and the working volume. Using the response surface methodology with the Box-Behnken design, the effect of independent variables and their interactions on the process response were effectively evaluated. Different responses were analyzed taking into account the prednisolone removal (TOC and drug abatements) and the energy consumptions associated. The obtained model showed an improvement of the UV/F process when treating smaller volumes and when adding high concentrations of H2O2 and Fe2+. The validation of this model was successfully carried out, having only 5% of discrepancy between the model and the experimental results. Finally, the performance of the process when having a real wastewater matrix was also tested, achieving complete mineralization and detoxification after 8 h. In addition, prednisolone degradation products were identified. Finally, the obtained low energy permitted to confirm the viability of the process.
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Affiliation(s)
- Aida María Díez
- Department of Chemical Engineering, University of Vigo, Isaac Newton Building, Campus As Lagoas, Marcosende, 36310, Vigo, Spain
| | - Ana Sofia Ribeiro
- Department of Chemical Engineering, University of Vigo, Isaac Newton Building, Campus As Lagoas, Marcosende, 36310, Vigo, Spain
- Instituto Superior de Engenharia do Porto, Rua Dr. António Bernardino de Almeida, 431, 4200-072, Porto, Portugal
| | - Maria Angeles Sanromán
- Department of Chemical Engineering, University of Vigo, Isaac Newton Building, Campus As Lagoas, Marcosende, 36310, Vigo, Spain
| | - Marta Pazos
- Department of Chemical Engineering, University of Vigo, Isaac Newton Building, Campus As Lagoas, Marcosende, 36310, Vigo, Spain.
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18
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19
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Wang S, Chen Y, Long Y, Li L, Wang L, Zhang S, Jiang F. Room Temperature Synthesis of BiOI/Bi5
O7
I p-n Heterojunction with Enhanced Photocatalytic Activity for 17α-Ethynylestradiol. ChemistrySelect 2018. [DOI: 10.1002/slct.201800923] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Shan Wang
- School of Chemical Science and Technology; Yunnan University, Kunming; Yunnan 650091 (P.R. China
| | - Yu Chen
- School of Chemical Science and Technology; Yunnan University, Kunming; Yunnan 650091 (P.R. China
| | - Yanju Long
- School of Chemical Science and Technology; Yunnan University, Kunming; Yunnan 650091 (P.R. China
| | - Lingxin Li
- School of Chemical Science and Technology; Yunnan University, Kunming; Yunnan 650091 (P.R. China
| | - Lulu Wang
- School of Chemical Science and Technology; Yunnan University, Kunming; Yunnan 650091 (P.R. China
| | - Sifeng Zhang
- School of Chemical Science and Technology; Yunnan University, Kunming; Yunnan 650091 (P.R. China
| | - Fengzhi Jiang
- School of Chemical Science and Technology; Yunnan University, Kunming; Yunnan 650091 (P.R. China
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20
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Tran TN, Kim DG, Ko SO. Synergistic effects of biogenic manganese oxide and Mn(II)-oxidizing bacterium Pseudomonas putida strain MnB1 on the degradation of 17 α-ethinylestradiol. JOURNAL OF HAZARDOUS MATERIALS 2018; 344:350-359. [PMID: 29080488 DOI: 10.1016/j.jhazmat.2017.10.045] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Revised: 10/20/2017] [Accepted: 10/21/2017] [Indexed: 06/07/2023]
Abstract
While biogenic manganese oxide (BMO) generated via the oxidation of Mn(II) by the Mn-oxidizing bacteria (MOB) have received attention, the relative roles of biological activity by MOB themselves were not clearly investigated. In this study, the synergistic effects of BMO and MOB Pseudomonas putida strain MnB1 on the degradation of 17α-ethinylestradiol (EE2) was investigated. Experiments with BMO in the presence of P. putida MnB1 showed 15-fold higher removal than that with BMO alone, suggesting that EE2 degradation was mediated by the biological activity of MOB as well as abiotic reaction by BMO. Trapping experiments with pyrophosphate (PP) proved that Mn(III) intermediate formed during the biological process from Mn (II) to Mn (IV) contribute much to the EE2 removal. Also, sharp decreases in EE2 removal were observed when microbial activity was inactivated by heat treatment or sodium azide. From this study, the EE2 removal mechanisms by BMO in the presence P. putida MnB1 are described as follows: (1) abiotic oxidation of EE2 by BMO occurs. (2) P. putida MnB1 indirectly oxidizes EE2 by transferring electrons from the Mn (III) intermediate. (3) P. putida MnB1 continuously re-oxidizes the Mn(II) released from the oxidative degradation of EE2 by BMO, generating new Mn(III)-intermediates or BMO.
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Affiliation(s)
- Thi Nhung Tran
- Department of Civil Engineering, Kyung Hee University, Seocheon-dong, Giheung-gu, Yongin, 446-701, Republic of Korea.
| | - Do-Gun Kim
- Department of Civil Engineering, Kyung Hee University, Seocheon-dong, Giheung-gu, Yongin, 446-701, Republic of Korea.
| | - Seok-Oh Ko
- Department of Civil Engineering, Kyung Hee University, Seocheon-dong, Giheung-gu, Yongin, 446-701, Republic of Korea.
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21
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Nejedly T, Klimes J. A model of natural degradation of 17-α-ethinylestradiol in surface water and identification of degradation products by GC-MS. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:23196-23206. [PMID: 28831755 DOI: 10.1007/s11356-017-9743-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 07/10/2017] [Indexed: 06/07/2023]
Abstract
Over the past decade, the environment has been polluted by a wide spectrum of exogenous chemicals and environmental analysis has become one of the most progressive parts of analytical research. The aim of this work was to determine the kinetics of natural degradation, and to identify the degradation products of the massively used estrogenic drug, 17-α-ethinylestradiol. The photodegradation, oxidation and thermostability conditions were selected according to ICH requirements for pharmaceutical stability testing. A simple 72-h photodegradation study in purified water exhibited significant first-order kinetics with the kinetic constant k = 0.0303 h-1, and degradation halftime 22.8 h. The basic halftime could be reduced to 17.1 h by the addition of sea salt, and increase in temperature. Monohydroxy, dihydroxy and dehydrogenated derivatives of ethinylestradiol with intact steroidal structure were identified as major degradation products resulting from simple photodegradation. The addition of an oxidative agent significantly accelerated the degradation rate; combined with higher temperature, the degradation halftime was reduced to 1.1 h with the first-order kinetic constant k = 0.632 h-1. TOC analysis showed a notable decrease of organic mass (18% in 3 days) during oxidation experiments, and confirmed the degradation of steroidal structure.
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Affiliation(s)
- Tomas Nejedly
- Faculty of Pharmacy in Hradec Králové, Department of Pharmaceutical Chemistry and Pharmaceutical Analysis, Charles University in Prague, Heyrovského 1203, 500 05, Hradec Králové, Czech Republic.
| | - Jiri Klimes
- Faculty of Pharmacy in Hradec Králové, Department of Pharmaceutical Chemistry and Pharmaceutical Analysis, Charles University in Prague, Heyrovského 1203, 500 05, Hradec Králové, Czech Republic
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22
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Díez AM, Sanromán MA, Pazos M. Sequential two-column electro-Fenton-photolytic reactor for the treatment of winery wastewater. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:1137-1151. [PMID: 27796998 DOI: 10.1007/s11356-016-7937-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 10/19/2016] [Indexed: 06/06/2023]
Abstract
The high amount of winery wastewaters produced each year makes their treatment a priority issue due to their problematic characteristics such as acid pH, high concentration of organic load and colourful compounds. Furthermore, some of these effluents can have dissolved pesticides, due to the previous grape treatments, which are recalcitrant to conventional treatments. Recently, photo-electro-Fenton process has been reported as an effective procedure to mineralize different organic contaminants and a promising technology for the treatment of these complex matrixes. However, the reactors available for applying this process are scarce and they show several limitations. In this study, a sequential two-column reactor for the photo-electro-Fenton treatment was designed and evaluated for the treatment of different pesticides, pirimicarb and pyrimethanil, used in wine production. Both studied pesticides were efficiently removed, and the transformation products were determined. Finally, the treatment of a complex aqueous matrix composed by winery wastewater and the previously studied pesticides was carried out in the designed sequential reactor. The high removals of TOC and COD reached and the low energy consumption demonstrated the efficiency of this new configuration.
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Affiliation(s)
- A M Díez
- Department of Chemical Engineering, University of Vigo, Campus As Lagoas-Marcosende, 36310, Vigo, Spain
| | - M A Sanromán
- Department of Chemical Engineering, University of Vigo, Campus As Lagoas-Marcosende, 36310, Vigo, Spain
| | - M Pazos
- Department of Chemical Engineering, University of Vigo, Campus As Lagoas-Marcosende, 36310, Vigo, Spain.
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23
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Jiang L, Gu Y, Guo H, Liu L, Chen J. Efficient removal of 17α-ethinylestradiol (EE2) from water using freshly formed Fe–Mn binary oxide. RSC Adv 2017. [DOI: 10.1039/c7ra02022h] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The removal mechanism of EE2: adsorption onto FMBO through hydrogen bonding and then oxidation by MnO2.
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Affiliation(s)
- Liying Jiang
- College of Environment
- Zhejiang University of Technology
- Hangzhou 310032
- China
| | - Youli Gu
- College of Environment
- Zhejiang University of Technology
- Hangzhou 310032
- China
| | - Haiqian Guo
- College of Environment
- Zhejiang University of Technology
- Hangzhou 310032
- China
| | - Lu Liu
- College of Environment
- Zhejiang University of Technology
- Hangzhou 310032
- China
| | - Jianmeng Chen
- College of Environment
- Zhejiang University of Technology
- Hangzhou 310032
- China
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24
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Cédat B, de Brauer C, Métivier H, Dumont N, Tutundjan R. Are UV photolysis and UV/H2O2 process efficient to treat estrogens in waters? Chemical and biological assessment at pilot scale. WATER RESEARCH 2016; 100:357-366. [PMID: 27214348 DOI: 10.1016/j.watres.2016.05.040] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 05/11/2016] [Accepted: 05/12/2016] [Indexed: 06/05/2023]
Abstract
In this study, UV based treatments were implemented at pilot scale to assess their ability to remove hormones from treated wastewater, especially with the view to equip small and medium size Wastewater Treatment Plants (WTPs). To this end, the degradation of a mixture of estrogenic hormones (Estrone (E1), β-Estradiol (E2), and 17α-Ethinyl Estradiol (EE2)) in waters by UV photolysis and UV/H2O2 process was investigated in real conditions. A particular attention was paid at designing a well validated laboratory scale pilot in order to optimise oxidant concentrations and UV fluence. A Low pressure lamp (254 nm) was used in a flow through commercial reactor. The effects of water matrices (drinking water and treated wastewater) and H2O2 concentrations (10, 40, and 90 mg/L) on the pilot efficiency were first determined. Only E1 could be partially degraded by UV photolysis whereas hormones were all well removed by UV/H2O2 process in both matrices. The second part of the study focused on a chemical and biological assessment of UV photolysis and UV/H2O2 process (30 and 50 mg/L). Degradation rate constants of hormones as well as changes in estrogenic activity (YES bioassay) and toxicity (Vibrio fischeri) were followed at the same time. UV photolysis could not remove neither estrogens nor estrogenic activity at relevant UV fluence in waters. However 80% of initial estrogenic compounds and estrogenic activity could be removed from treated wastewater by combining UV fluence of 423 and 520 mJ/cm(2) with 50 and 30 mg/L of H2O2, respectively. No high estrogenic or toxic by-products were detected by the two bioassays following UV photolysis or UV/H2O2 process. Operating costs were estimated for a full scale pilot. H2O2 was the major cost. By combining the appropriate concentration of H2O2 and UV fluence, it could be possible to design a cost effective treatment for treating estrogens in small and medium size WTPs.
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Affiliation(s)
- Bruno Cédat
- COMAP WT, Z.A les petis champs, 26120 Montélier, France; INSA Lyon, DEEP, 34 Avenue des Arts, 69621 Villeurbanne Cedex, France.
| | | | - Hélène Métivier
- INSA Lyon, DEEP, 34 Avenue des Arts, 69621 Villeurbanne Cedex, France
| | - Nathalie Dumont
- INSA Lyon, DEEP, 34 Avenue des Arts, 69621 Villeurbanne Cedex, France
| | - Renaud Tutundjan
- IRSTEA Lyon-Villeurbanne, UR MAEP, Laboratoire écotoxicologie, 5 rue de la Doua CS 70077, 69626 Villeurbanne Cedex, France
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25
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Sornalingam K, McDonagh A, Zhou JL. Photodegradation of estrogenic endocrine disrupting steroidal hormones in aqueous systems: Progress and future challenges. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 550:209-224. [PMID: 26815298 DOI: 10.1016/j.scitotenv.2016.01.086] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 01/15/2016] [Accepted: 01/15/2016] [Indexed: 05/24/2023]
Abstract
This article reviews different photodegradation technologies used for the removal of four endocrine disrupting chemicals (EDCs): estrone (E1), 17β-estradiol (E2), estriol (E3) and 17α-ethinylestradiol (EE2). The degradation efficiency is greater under UV than visible light; and increases with light intensity up to when mass transfer becomes the rate limiting step. Substantial rates are observed in the environmentally relevant range of pH7-8, though higher rates are obtained for pH above the pKa (~10.4) of the EDCs. The effects of dissolved organic matter (DOM) on EDC photodegradation are complex with both positive and negative impacts being reported. TiO2 remains the best catalyst due to its superior activity, chemical and photo stability, cheap commercial availability, capacity to function at ambient conditions and low toxicity. The optimum TiO2 loading is 0.05-1gl(-1), while higher loadings have negative impact on EDC removal. The suspended catalysts prove to be more efficient in photocatalysis compared to the immobilised catalysts, while the latter are considered more suitable for commercial scale applications. Photodegradation mostly follows 1st or pseudo 1st order kinetics. Photodegradation typically eradicates or moderates estrogenic activity, though some intermediates are found to exhibit higher estrogenicity than the parent EDCs; the persistence of estrogenic activity is mainly attributed to the presence of the phenolic moiety in intermediates.
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Affiliation(s)
- Kireesan Sornalingam
- School of Civil and Environmental Engineering, University of Technology Sydney, NSW 2007, Australia
| | - Andrew McDonagh
- School of Mathematical and Physical Sciences, Faculty of Science, University of Technology Sydney, NSW 2007, Australia
| | - John L Zhou
- School of Civil and Environmental Engineering, University of Technology Sydney, NSW 2007, Australia.
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Electrochemical degradation of estrone using a boron-doped diamond anode in a filter-press reactor. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2015.09.170] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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27
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Affiliation(s)
- Susan D. Richardson
- Department of Chemistry and
Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Susana Y. Kimura
- Department of Chemistry and
Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
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