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Ramos JGVDS, Richter CP, Silva MA, Singolano GL, Hauagge G, Lorençon E, Junior ILC, Edwiges T, de Arruda PV, Vidal CMDS. Effects of ciprofloxacin on biogas production and microbial community composition in anaerobic digestion of swine wastewater in ASBR type reactor. Environ Technol 2024; 45:2076-2088. [PMID: 36621001 DOI: 10.1080/09593330.2022.2164744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 12/26/2022] [Indexed: 06/17/2023]
Abstract
In swine farming, antibiotics are often used to reduce disease and promote animal growth. Part of these compounds is not absorbed by the swine body, being excreted and later reaching the treatment systems, soil, and nearby waterbodies. This research sought to investigate the influence of adding ciprofloxacin (CIP) on the anaerobic digestion of swine wastewater. For that, a bench-scale anaerobic sequential batch reactor (ASBR) was used, with 5 L of working volume in six different phases, with volumetric organic loading rate (VOLR) and CIP dosage variation. According to the results, the optimal VOLR for the reactor was 0.60 ± 0.11 gSV L-1 d-1, resulting in biogas productivity of 0.51 ± 0.03 Lbiogas L-1 d-1. After initial stability, adding substrate with 0.5 mgCIP L-1 resulted in an abrupt drop of 82% in the productivity from the 7th to 11th day of addition, coinciding with volatile acids accumulation. Afterward, the reactor recovered and reached apparent stability, with productivity similar to the previous step without the drug. For 2.5 mgCIP L-1 in the substrate, the biogas productivity at equilibrium was 11.8% lower than in the phases with the same VOLR and 0.0 and 0.5 mgCIP L-1. Organic matter removals near 80% were achieved for both dosages. The 16S rRNA metagenomic analyses showed an increase in the relative abundance of most of the phyla found, indicating that the dosages used allowed the acclimatization of microorganisms and possibly the compound biodegradation.
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Affiliation(s)
- José Gustavo Venâncio da Silva Ramos
- Civil Engineering Academic Department, The Federal University of Technology - Paraná (UTFPR), Toledo, Brazil
- Technical Residency in Environmental Engineering and Management, State University of Ponta Grossa (UEPG), Ponta Grossa, Brazil
| | - Camila Palacio Richter
- Bioprocess and Biotechnology Engineering Academic Department, The Federal University of Technology - Paraná (UTFPR), Toledo, Brazil
| | - Maria Alice Silva
- Bioprocess and Biotechnology Engineering Academic Department, The Federal University of Technology - Paraná (UTFPR), Toledo, Brazil
| | - Giordana Longo Singolano
- Civil Engineering Academic Department, The Federal University of Technology - Paraná (UTFPR), Toledo, Brazil
| | - Gabriel Hauagge
- Bioprocess and Biotechnology Engineering Academic Department, The Federal University of Technology - Paraná (UTFPR), Toledo, Brazil
| | - Eduarda Lorençon
- Bioprocess and Biotechnology Engineering Academic Department, The Federal University of Technology - Paraná (UTFPR), Toledo, Brazil
| | | | - Thiago Edwiges
- Biological and Environmental Sciences, The Federal University of Technology - Paraná (UTFPR), Medianeira, Brazil
| | - Priscila Vaz de Arruda
- Bioprocess and Biotechnology Engineering Academic Department, The Federal University of Technology - Paraná (UTFPR), Toledo, Brazil
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Li J, Yang T, Zeng G, An L, Jiang J, Ao Z, Ma J. Ozone- and Hydroxyl Radical-Induced Degradation of Micropollutants in a Novel UVA-LED-Activated Periodate Advanced Oxidation Process. Environ Sci Technol 2023; 57:18607-18616. [PMID: 36745772 DOI: 10.1021/acs.est.2c06414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
In this study, novel light emitting diode (LED)-activated periodate (PI) advanced oxidation process (AOP) at an irradiation wavelength in the ultraviolet A range (UVA, UVA-LED/PI AOP) was developed and investigated using naproxen (NPX) as a model micropollutant. The UVA-LED/PI AOP remarkably enhanced the degradation of NPX and seven other selected micropollutants with the observed pseudo-first-order rate constants ranging from 0.069 ± 0.001 to 4.50 ± 0.145 min-1 at pH 7.0, demonstrating a broad-spectrum micropollutant degradation ability. Lines of evidence from experimental analysis and kinetic modeling confirmed that hydroxyl radical (•OH) and ozone (O3) were the dominant species generated in UVA-LED/PI AOP, and they contributed evenly to NPX degradation. Increasing the pH and irradiation wavelength negatively affected NPX degradation, and this could be well explained by the decreased quantum yield (ΦPI) of PI. The degradation kinetics of NPX by the UVA-LED/PI AOP in the presence of water matrices (i.e., chloride, bicarbonate, and humic acid) and in real waters were examined, and the underlying mechanisms were illustrated. A total of nine transformation products were identified from NPX oxidation by the UVA-LED/PI AOP, mainly via hydroxylation, dealkylation, and oxidation pathways. The UVA-LED/PI AOP proposed might be a promising technology for the treatment of micropollutants in aqueous solutions. The pivotal role of ΦPI during light photolysis of PI may guide the future design of light-assisted PI AOPs.
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Affiliation(s)
- Juan Li
- Advanced Interdisciplinary Institute of Environment and Ecology, Beijing Normal University, Zhu Hai519087, People's Republic of China
| | - Tao Yang
- School of Biotechnology and Health Science, Wuyi University, Jiangmen529020, People's Republic of China
| | - Ge Zeng
- School of Biotechnology and Health Science, Wuyi University, Jiangmen529020, People's Republic of China
| | - Linqian An
- School of Biotechnology and Health Science, Wuyi University, Jiangmen529020, People's Republic of China
| | - Jin Jiang
- Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou510006, People's Republic of China
| | - Zhimin Ao
- Advanced Interdisciplinary Institute of Environment and Ecology, Beijing Normal University, Zhu Hai519087, People's Republic of China
| | - Jun Ma
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin150090, People's Republic of China
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3
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Deniz F. Biosorption of a common micropollutant (methylene blue) from a water environment by chemically activated biomass of a widely available plant species ( Pyracantha coccinea M. J. Roemer). Int J Phytoremediation 2023; 26:754-763. [PMID: 37791628 DOI: 10.1080/15226514.2023.2263561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
Recently, to protect the health of aquatic life and, indirectly, all living things, biomass-based substances have been increasingly applied as biosorbent materials to remove micropollutant agents from an aquatic environment. However, these studies are under development, and the search for more successful materials continues. Here, the biosorption of a common micropollutant, methylene blue, from an aquatic environment was investigated using the chemically activated biomass of a widely available plant species, Pyracantha coccinea M. J. Roemer. The biosorption efficiency of the biosorbent material was improved by optimizing the experimental conditions, including the contact time, micropollutant load, pH, and biosorbent material amount, and the highest performance was observed at t = 360 mins, C0 = 15 mg L-1, pH = 8 and m = 10 mg. The pseudo-second-order kinetics model and Freundlich isotherm model were in good agreement with the experimentally obtained results. The thermodynamic study suggested that the micropollutant biosorption was a favorable, spontaneous, and physical process. The micropollutant-biosorbent interaction mechanism was presented using SEM and FTIR studies. The maximum Langmuir biosorption capacity of the biosorbent was determined to be 156.674 mg g-1. The activation operation more than doubled the biosorption potential of the biosorbent material. Thus, the present study showed that the chemically activated plant biomass-based material could be a promising biosorbent for the effective removal of the micropollutant from water environment.
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Affiliation(s)
- Fatih Deniz
- Environmental Protection Technologies Department, Vocational School of Bozova, University of Harran, Sanliurfa, Turkey
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4
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Martin P, He K, Blaney L, Hobbs SR. Advanced Liquid Chromatography with Tandem Mass Spectrometry Method for Quantifying Glyphosate, Glufosinate, and Aminomethylphosphonic Acid Using Pre-Column Derivatization. ACS ES T Water 2023; 3:2407-2414. [PMID: 37588809 PMCID: PMC10425981 DOI: 10.1021/acsestwater.3c00094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 05/11/2023] [Accepted: 05/11/2023] [Indexed: 08/18/2023]
Abstract
Analytical limitations make it challenging to develop effective methodologies for understanding glyphosate-based herbicide levels in drinking water and groundwater. Due to their lack of chromophores and zwitterionic nature, glyphosate-based herbicides are difficult to detect using traditional methods. This paper offers a straightforward method for quantifying glyphosate, glufosinate, and aminomethylphosphonic acid (AMPA) via 9-fluorenylmethylchloroformate (FMOC-Cl) pre-column derivatization and analysis by liquid chromatography with tandem mass spectrometry (LC-MS/MS). Method development was focused on optimizing the critical variables for optimal derivatization using a 24-factorial design. We found that complete derivatization significantly depends on the inclusion of borate buffer to create the alkaline conditions necessary for aminolysis. Ethylenediaminetetraacetic acid (EDTA) addition was critical to minimize metallic chelation and ensure reproducible retention times and peaks. However, EDTA concentrations ≥5% decreased peak intensity due to ion suppression. The FMOC-Cl concentration and derivatization time exhibited a direct proportional relationship, with the complete reaction achieved with 2.5 mM FMOC-Cl after 4 h. Concentrations of FMOC-Cl greater than 2.5 mM led to the formation of oxides, which interfere with the detection sensitivity and selectivity. Desirable results were achieved with 1% EDTA, 5% borate, and 2.5 mM FMOC-Cl, which led to complete derivatization after 4 h.
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Affiliation(s)
- Pedro
J. Martin
- Department
of Civil & Environmental Engineering, Samueli School of Engineering, University of California, Irvine, Irvine, California 92697, United States
| | - Ke He
- Department
of Chemical, Biochemical, and Environmental Engineering, University of Maryland, Baltimore County, Baltimore, Maryland 21250-0001, United
States
| | - Lee Blaney
- Department
of Chemical, Biochemical, and Environmental Engineering, University of Maryland, Baltimore County, Baltimore, Maryland 21250-0001, United
States
| | - Shakira R. Hobbs
- Department
of Civil & Environmental Engineering, Samueli School of Engineering, University of California, Irvine, Irvine, California 92697, United States
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Yuan Y, Wang K, Liu Y, Jiang M, Jiang Y, Qiu J. Isolation and Characterization of the Wastewater Micropollutant Phenacetin-Degrading Bacterium Rhodococcus sp. Strain PNT-23. Microorganisms 2023; 11:1962. [PMID: 37630522 PMCID: PMC10458748 DOI: 10.3390/microorganisms11081962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 07/28/2023] [Accepted: 07/28/2023] [Indexed: 08/27/2023] Open
Abstract
Phenacetin, an antipyretic and analgesic drug, poses a serious health risk to both humans and aquatic organisms, which is of concern since this micropollutant is frequently detected in various aquatic environments. However, rare pure bacterial cultures have been reported to degrade phenacetin. Therefore, in this study, the novel phenacetin-degrading strain PNT-23 was isolated from municipal wastewater and identified as a Rhodococcus sp. based on its morphology and 16S rRNA gene sequencing. The isolated strain could completely degrade 100 mg/L phenacetin at an inoculum concentration of OD600 1.5 within 80 h, utilizing the micropollutant as its sole carbon source for growth. Strain PNT-23 exhibited optimal growth in LB medium at 37 °C and a pH of 7.0 with 1% NaCl, while the optimal degradation conditions in minimal medium were 30 °C and a pH of 7.0 with 1% NaCl. Two key intermediates were identified during phenacetin biodegradation by the strain PNT-23: N-acetyl-4-aminophenol and 4-aminophenol. This study provides novel insights into the biodegradation of phenacetin using a pure bacterium culture, expands the known substrate spectra of Rhodococcus strains and presents a potential new candidate for the microbial removal of phenacetin in a diverse range of environments.
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Affiliation(s)
| | | | | | | | | | - Jiguo Qiu
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
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6
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Lemay AC, Sontarp EJ, Martinez D, Maruri P, Mohammed R, Neapole R, Wiese M, Willemsen JAR, Bourg IC. Molecular Dynamics Simulation Prediction of the Partitioning Constants ( KH, Kiw, Kia) of 82 Legacy and Emerging Organic Contaminants at the Water-Air Interface. Environ Sci Technol 2023; 57:6296-6308. [PMID: 37014786 DOI: 10.1021/acs.est.3c00267] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
The tendency of organic contaminants (OCs) to partition between different phases is a key set of properties that underlie their human and ecological health impacts and the success of remediation efforts. A significant challenge associated with these efforts is the need for accurate partitioning data for an ever-expanding list of OCs and breakdown products. All-atom molecular dynamics (MD) simulations have the potential to help generate these data, but existing studies have applied these techniques only to a limited variety of OCs. Here, we use established MD simulation approaches to examine the partitioning of 82 OCs, including many compounds of critical concern, at the water-air interface. Our predictions of the Henry's law constant (KH) and interfacial adsorption coefficients (Kiw, Kia) correlate strongly with experimental results, indicating that MD simulations can be used to predict KH, Kiw, and Kia values with mean absolute deviations of 1.1, 0.3, and 0.3 logarithmic units after correcting for systematic bias, respectively. A library of MD simulation input files for the examined OCs is provided to facilitate future investigations of the partitioning of these compounds in the presence of other phases.
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Affiliation(s)
- Amélie C Lemay
- Department of Civil and Environmental Engineering, Princeton University, Princeton, New Jersey 08544, United States
| | - Ethan J Sontarp
- Department of Geosciences, Princeton University, Princeton, New Jersey 08544, United States
| | - Daniela Martinez
- Department of Civil and Environmental Engineering, Princeton University, Princeton, New Jersey 08544, United States
| | - Philip Maruri
- Department of Civil and Environmental Engineering, Princeton University, Princeton, New Jersey 08544, United States
| | - Raneem Mohammed
- Department of Civil and Environmental Engineering, Princeton University, Princeton, New Jersey 08544, United States
| | - Ryan Neapole
- Department of Civil and Environmental Engineering, Princeton University, Princeton, New Jersey 08544, United States
| | - Morgan Wiese
- Department of Civil and Environmental Engineering, Princeton University, Princeton, New Jersey 08544, United States
| | - Jennifer A R Willemsen
- Department of Civil and Environmental Engineering, Princeton University, Princeton, New Jersey 08544, United States
| | - Ian C Bourg
- Department of Civil and Environmental Engineering, Princeton University, Princeton, New Jersey 08544, United States
- High Meadows Environmental Institute, Princeton University, Princeton, New Jersey 08544, United States
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7
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Liang X, Christensen JH, Bucheli TD, Nielsen NJ. Source-Supported Suspect Screening (4S) of Phytotoxins in Terrestrial and Aquatic Environments: A Field Study of Lupinus angustifolius L. (Blue Lupin). Environ Sci Technol 2023; 57:2333-2340. [PMID: 36723500 DOI: 10.1021/acs.est.2c05387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Phytotoxins (PTs) are bioactive secondary metabolites produced by plants. More recently, they have been recognized as important aquatic micropollutants. Despite that, only a few PTs have been detected and reported in terrestrial and aquatic environments, while their source and leaching pathways remain largely unclear. Herein, we established a novel approach named source-supported suspect screening (4S) to discover PTs in different environments, investigate their environmental occurrences, identify their sources, and initiate discussions on their leaching mechanisms. The 4S-approach was demonstrated on a five-month Lupinus angustifolius L. (L. angustifolius) crop field experiment, where plant, topsoil, drainage water, and surface water were sampled and analyzed. As a result, 72 PTs (flavonoids and alkaloids) were identified at high confidence, with 10 PTs fully confirmed. Fifty-three PTs detected in soil or water were linked to L. angustifolius, among which 26 PTs were coherently detected in all three environmental compartments. The occurrence and abundance of PTs in terrestrial soil and aquatic environments were influenced by the plant growth stage and precipitation. Soil served as an intermedium when PTs leached from L. angustifolius to the drainage water, while the degree of retardation and eventual occurrence in the aquatic environment depended on both PTs and soil physico-chemical properties.
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Affiliation(s)
- Xiaomeng Liang
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
| | - Jan H Christensen
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
| | | | - Nikoline Juul Nielsen
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
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Schmitt A, Mendret J, Cheikho H, Brosillon S. Ozone Diffusion through a Hollow Fiber Membrane Contactor for Pharmaceuticals Removal and Bromate Minimization. Membranes (Basel) 2023; 13:171. [PMID: 36837674 PMCID: PMC9959604 DOI: 10.3390/membranes13020171] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/19/2023] [Accepted: 01/29/2023] [Indexed: 06/18/2023]
Abstract
Recently, ozonation has been advocated as a solution to tackle emerging contaminants. Hollow fiber membrane contactors (HFMC) have a lower residual ozone concentration than bubble reactors that could limit the formation of potential ozonation by-products, especially bromates that are regulated in drinking water. The aim of this study was to evaluate ozonation with HFMC for pharmaceutical abatement and bromate minimization compared to bubble columns in wastewater. A HFMC, composed of 65 polytetrafluoroethylene hollow fibers with a 0.45 mm/0.87 mm inner/external diameter and a 0.107 m² exchange surface, was used for the ozonation of real-treated wastewater spiked with 2 µM of p-chlorobenzoic acid (p-CBA) and 3 mg.L-1 of bromide. p-CBA was tracked to monitor the production of strongly-oxidant hydroxyl radicals from the decomposition of the molecular ozone. At 100% p-CBA abatement, 1600 µg.L-1 of bromate was formed with the HFMC, whereas 3486 µg.L-1 was formed with the bubble column. These results demonstrate that HFMC can produce a significant amount of hydroxyl radicals while limiting bromate formation in real-treated wastewater. The test water was also spiked with carbamazepine and sulfamethoxazole to evaluate the abatement efficiency of the process. Short contact times (approximately 2s) achieved high rates of pharmaceuticals removal without bromate formation.
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Affiliation(s)
| | - Julie Mendret
- Correspondence: ; Tel.: +33-(46)-7144624; Fax: +33-(46)-7149119
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9
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Zhang H, Cui P, Xie D, Wang Y, Wang P, Sheng G. Axial N Ligand-Modulated Ultrahigh Activity and Selectivity Hyperoxide Activation over Single-Atoms Nanozymes. Adv Sci (Weinh) 2023; 10:e2205681. [PMID: 36446629 PMCID: PMC9875630 DOI: 10.1002/advs.202205681] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 10/28/2022] [Indexed: 06/16/2023]
Abstract
Learning and studying the structure-activity relationship in the bio-enzymes is conducive to the design of nanozymes for energy and environmental application. Herein, Fe single-atom nanozymes (Fe-SANs) with Fe-N5 site, inspired by the structure of cytochromes P450 (CYPs), are developed and characterized. Similar to the CYPs, the hyperoxide can activate the Fe(III) center of Fe-SANs to generate Fe(IV)O intermediately, which can transfer oxygen to the substrate with ultrafast speed. Particularly, using the peroxymonosulfate (PMS)-activated Fe-SANs to oxidize sulfamethoxazole, a typical antibiotic contaminant, as the model hyperoxides activation reaction, the excellent activity within 284 min-1 g-1 (catalyst) mmol-1 (PMS) oxidation rate and 91.6% selectivity to the Fe(IV)O intermediate oxidation are demonstrated. More importantly, instead of promoting PMS adsorption, the axial N ligand modulates the electron structure of FeN5 SANs for the lower reaction energy barrier and promotes electron transfer to PMS to produce Fe(IV)O intermediate with high selectivity. The highlight of the axial N coordination in the nanozymes in this work provides deep insight to guide the design and development of nanozymes nearly to the bio-enzyme with excellent activity and selectivity.
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Affiliation(s)
- Han‐Chao Zhang
- CAS Key Laboratory of Urban Pollutant ConversionDepartment of Environmental Science and EngineeringUniversity of Science and Technology of ChinaHefei230026China
- Department of Civil & Environmental EngineeringThe Hong Kong Polytechnic UniversityKowloonHong Kong999077China
| | - Pei‐Xin Cui
- Key Laboratory of Soil Environment and Pollution RemediationInstitute of Soil ScienceChinese Academy of SciencesNanjing210008China
| | - Dong‐Hua Xie
- CAS Key Laboratory of Urban Pollutant ConversionDepartment of Environmental Science and EngineeringUniversity of Science and Technology of ChinaHefei230026China
| | - Yu‐Jun Wang
- Key Laboratory of Soil Environment and Pollution RemediationInstitute of Soil ScienceChinese Academy of SciencesNanjing210008China
| | - Peng Wang
- Department of Civil & Environmental EngineeringThe Hong Kong Polytechnic UniversityKowloonHong Kong999077China
| | - Guo‐Ping Sheng
- CAS Key Laboratory of Urban Pollutant ConversionDepartment of Environmental Science and EngineeringUniversity of Science and Technology of ChinaHefei230026China
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10
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Yang T, Mai J, Zhu M, Peng Q, Huang C, Wu S, Tan Q, Jia J, Fang J, Ma J. Enhanced Permanganate Activation under UVA-LED Irradiation: Unraveled Mechanism Involving Manganese Species and Hydroxyl Radical. Environ Sci Technol 2022; 56:17720-17731. [PMID: 36469811 DOI: 10.1021/acs.est.2c06290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Permanganate [Mn(VII)] has gained broad attention in water treatment. However, its limited reactivity toward some refractory micropollutants hinders its application for micropollutant degradation. Herein, we introduced UVA-LED photolysis of Mn(VII) (UVA-LED/Mn(VII)) to degrade micropollutants (diclofenac (DCF), 4-chlorophenol (4-CP), atrazine, and nitrobenzene) by selecting DCF and 4-CP as target micropollutants. The effects of operating conditions (e.g., light intensity, radiation wavelengths, pH, and water constituents) on DCF and 4-CP degradation as well as the underlying mechanisms were systematically studied. The degradation rates of DCF and 4-CP linearly decreased with increasing radiation wavelengths (from 365 to 405 nm), likely due to the decreased molar absorption coefficients and quantum yields of Mn(VII). Reactive manganese species (RMnS), including Mn(V), Mn(III), and HO•, were generated in the UVA-LED/Mn(VII) process. Mn(V) and HO• were responsible for DCF degradation, while Mn(III), HO•, and likely Mn(V) accounted for 4-CP degradation. Competitive kinetic results revealed that contributions of RMnS and HO• decreased with increasing radiation wavelengths, wherein RMnS played the dominant role. Increasing pH displayed opposite effects on DCF and 4-CP degradation with higher degradation efficiency obtained at acidic pH for the former one but alkaline pH for the latter one. The presence of water background ions (e.g., Cl-, HCO3-, and Ca2+) barely influenced DCF and 4-CP degradation. Finally, in comparison with Mn(VII) alone, enhanced degradation of DCF and 4-CP by UVA-LED/Mn(VII) was observed in real waters. This work advances the understanding of the photochemistry of manganese species in micropollutant degradation and facilitates Mn(VII) oxidation in practical application.
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Affiliation(s)
- Tao Yang
- School of Biotechnology and Health Science, Wuyi University, Jiangmen 529020, Guangdong, China
| | - Jiamin Mai
- School of Biotechnology and Health Science, Wuyi University, Jiangmen 529020, Guangdong, China
| | - Mengyang Zhu
- School of Biotechnology and Health Science, Wuyi University, Jiangmen 529020, Guangdong, China
| | - Qiqi Peng
- School of Biotechnology and Health Science, Wuyi University, Jiangmen 529020, Guangdong, China
| | - Cui Huang
- School of Biotechnology and Health Science, Wuyi University, Jiangmen 529020, Guangdong, China
| | - Sisi Wu
- School of Biotechnology and Health Science, Wuyi University, Jiangmen 529020, Guangdong, China
| | - Qinying Tan
- School of Biotechnology and Health Science, Wuyi University, Jiangmen 529020, Guangdong, China
| | - Jianbo Jia
- School of Biotechnology and Health Science, Wuyi University, Jiangmen 529020, Guangdong, China
| | - Jingyun Fang
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Jun Ma
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
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Allouzi M, Imbrogno A, Schäfer AI. Energy Barriers for Steroid Hormone Transport in Nanofiltration. Environ Sci Technol 2022; 56:16811-16821. [PMID: 36367435 DOI: 10.1021/acs.est.2c04658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Nanofiltration (NF) membranes can retain micropollutants (MPs) to a large extent, even though adsorption into the membrane and gradual permeation result in breakthrough and incomplete removal. The permeation of MPs is investigated by examining the energy barriers (determined using the Arrhenius concept) for adsorption, intrapore diffusion, and permeation encountered by four different steroid hormones in tight and loose NF membranes. Results show that the energy barriers for steroid hormone transport in tight membrane are entropically dominated and underestimated because of the high steric exclusion at the pore entrance. In contrast, the loose NF membrane enables steroid hormones partitioning at the pore entrance, with a permeation energy barrier (from feed toward the permeate side) ranging between 96 and 116 kJ/mol. The contribution of adsorption and intrapore diffusion to the energy barrier for steroid hormone permeation reveals a significant role of intrapore diffusive transport on the obtained permeation energy barrier. Overall, the breakthrough phenomenon observed during the NF of MPs is facilitated by the low energy barrier for adsorption. Experimental evidence of such principles is relevant for understanding mechanisms and ultimately improving the selectivity of NF.
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Affiliation(s)
- Mohammad Allouzi
- Institute for Advanced Membrane Technology (IAMT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344Eggenstein-Leopoldshafen, Germany
| | - Alessandra Imbrogno
- Institute for Advanced Membrane Technology (IAMT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344Eggenstein-Leopoldshafen, Germany
| | - Andrea I Schäfer
- Institute for Advanced Membrane Technology (IAMT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344Eggenstein-Leopoldshafen, Germany
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12
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Fuziki MEK, Abreu E, Napoli JS, Nunes SC, Brackmann R, Machado TCS, Semianko BC, Lenzi GG. Cu/Nb 2O 5, Fe/Nb 2O 5 and Cu-Fe/Nb 2O 5 applied in salicylic acid degradation: Parameters studies and photocatalytic activity. J Environ Sci Health A Tox Hazard Subst Environ Eng 2022; 57:797-812. [PMID: 36069164 DOI: 10.1080/10934529.2022.2117525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Revised: 08/16/2022] [Accepted: 08/18/2022] [Indexed: 06/15/2023]
Abstract
This study describes the synthesis of Cu/Nb2O5, Fe/Nb2O5, and Cu-Fe/Nb2O5 catalysts obtained by incorporating copper and/or iron metals into niobium pentoxide (Nb2O5). The new materials were characterized by the following techniques: Thermogravimetric Analysis (TA), surface and pore analysis, X-ray diffractometry (XRD), and Fourier Transform Infrared Spectroscopy (FT-IR). The catalyst was applied in the photocatalytic degradation of salicylic acid (SA). The influence of different parameters (calcined temperature, pH, and metal addition) on the photocatalytic reaction was evaluated. The results indicated that catalysts containing copper were more active and pH influenced the SA degradation process. SA removal results indicated that Cu/Nb2O5 photocatalyst presented a 1.5 fold higher degradation after 120 min in comparison to Cu-Fe/Nb2O5 and 4.6 fold higher than Fe/Nb2O5 catalyst, all them calcined at 400 °C. In tests carried out in the presence of formic acid, increasing the pH from about 3 to 7 allowed an almost 3.4-fold increase in SA degradation for the Cu-Fe/Nb2O5 catalyst calcined at 400 °C.
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Affiliation(s)
- Maria E K Fuziki
- Department of Chemical Engineering, State University of Maringá, Maringá, PR, Brazil
| | - Eduardo Abreu
- Department of Chemical Engineering, State University of Maringá, Maringá, PR, Brazil
| | - Jose S Napoli
- Department of Chemical Engineering, Federal University of Technology - Paraná, Curitiba, PR, Brazil
| | - Sabrina C Nunes
- Department of Chemical Engineering, Federal University of Technology, Pato Branco, PR, Brazil
| | - Rodrigo Brackmann
- Department of Chemical Engineering, Federal University of Technology, Pato Branco, PR, Brazil
| | - Tauani C S Machado
- Department of Chemical Engineering, Federal University of Technology - Paraná, Curitiba, PR, Brazil
| | - Betina C Semianko
- Department of Chemical Engineering, Federal University of Technology - Paraná, Curitiba, PR, Brazil
| | - Giane G Lenzi
- Department of Chemical Engineering, Federal University of Technology - Paraná, Curitiba, PR, Brazil
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13
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Henry J, Bai Y, Kreuder F, Saaristo M, Kaslin J, Wlodkowic D. Sensory-Motor Perturbations in Larval Zebrafish ( Danio rerio) Induced by Exposure to Low Levels of Neuroactive Micropollutants during Development. Int J Mol Sci 2022; 23:ijms23168990. [PMID: 36012255 PMCID: PMC9409309 DOI: 10.3390/ijms23168990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 08/04/2022] [Accepted: 08/10/2022] [Indexed: 11/16/2022] Open
Abstract
Due to increasing numbers of anthropogenic chemicals with unknown neurotoxic properties, there is an increasing need for a paradigm shift toward rapid and higher throughput behavioral bioassays. In this work, we demonstrate application of a purpose-built high throughput multidimensional behavioral test battery on larval stages of Danio rerio (zebrafish) at 5 days post fertilization (dpf). The automated battery comprised of the established spontaneous swimming (SS), simulated predator response (SPR), larval photomotor response (LPR) assays as well as a new thermotaxis (TX) assay. We applied the novel system to characterize environmentally relevant concentrations of emerging pharmaceutical micropollutants including anticonvulsants (gabapentin: 400 ng/L; carbamazepine: 3000 ng/L), inflammatory drugs (ibuprofen: 9800 ng/L), and antidepressants (fluoxetine: 300 ng/L; venlafaxine: 2200 ng/L). The successful integration of the thermal preference assay into a multidimensional behavioral test battery provided means to reveal ibuprofen-induced perturbations of thermal preference behaviors upon exposure during embryogenesis. Moreover, we discovered that photomotor responses in larval stages of fish are also altered by the as yet understudied anticonvulsant gabapentin. Collectively our results demonstrate the utility of high-throughput multidimensional behavioral ecotoxicity test batteries in prioritizing emerging risks associated with neuroactive drugs that can perturb neurodevelopment. Moreover, we showcase the added value of thermotaxis bioassays for preliminary screening of emerging contaminants.
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Affiliation(s)
- Jason Henry
- The Neurotox Lab, School of Science, RMIT University, Melbourne, VIC 3083, Australia
| | - Yutao Bai
- The Neurotox Lab, School of Science, RMIT University, Melbourne, VIC 3083, Australia
| | - Florian Kreuder
- Australian Regenerative Medicine Institute, Monash University, Clayton, VIC 3800, Australia
| | - Minna Saaristo
- Environmental Protection Authority Victoria, EPA Science, Macleod, VIC 3085, Australia
| | - Jan Kaslin
- Australian Regenerative Medicine Institute, Monash University, Clayton, VIC 3800, Australia
| | - Donald Wlodkowic
- The Neurotox Lab, School of Science, RMIT University, Melbourne, VIC 3083, Australia
- Correspondence:
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14
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Wang Y, Zhang P, Lyu L, Li T, Hu C. Preferential Destruction of Micropollutants in Water through a Self-Purification Process with Dissolved Organic Carbon Polar Complexation. Environ Sci Technol 2022; 56:10849-10856. [PMID: 35861715 DOI: 10.1021/acs.est.2c03354] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Removing micropollutants in real water is a scientific challenge due to primary dissolved organic carbon (DOC) and high energy consumption of current technologies. Herein, we develop a self-purification process for the preferential destruction of various micropollutants in municipal wastewater, raw drinking water, and ultrapure water with humic acid (HA) driven by the surface microelectronic field of Fe0-FeyCz/Fex-GZIF-8-rGO without any additional input. It was verified that a strongly polar complex consisting of an electron-rich HA/DOC area and an electron-poor micropollutant area was formed between HA/DOC and micropollutants, promoting more electrons of micropollutants in the adsorbed complex to delocalizing to electron-rich Fe species area and be trapped by O2, which resulted in their surface cleavage and hydrolyzation preferentially. The higher micropollutant degradation efficiency observed in real wastewaters was due to the greater complex polarity of DOC. Moreover, the electron transfer process ensured the stability of the surface microelectronic field and continuous water purification. Our findings provide a new insight into low-energy combined-micropollution water treatment.
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Affiliation(s)
- Yumeng Wang
- Institute of Environmental Research at Greater Bay, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Peng Zhang
- Institute of Environmental Research at Greater Bay, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Lai Lyu
- Institute of Environmental Research at Greater Bay, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Tong Li
- Institute of Environmental Research at Greater Bay, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Chun Hu
- Institute of Environmental Research at Greater Bay, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
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15
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Oruganti RK, Katam K, Show PL, Gadhamshetty V, Upadhyayula VKK, Bhattacharyya D. A comprehensive review on the use of algal-bacterial systems for wastewater treatment with emphasis on nutrient and micropollutant removal. Bioengineered 2022; 13:10412-10453. [PMID: 35441582 PMCID: PMC9161886 DOI: 10.1080/21655979.2022.2056823] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 03/16/2022] [Accepted: 03/17/2022] [Indexed: 11/08/2022] Open
Abstract
The scarcity of water resources and environmental pollution have highlighted the need for sustainable wastewater treatment. Existing conventional treatment systems are energy-intensive and not always able to meet stringent disposal standards. Recently, algal-bacterial systems have emerged as environmentally friendly sustainable processes for wastewater treatment and resource recovery. The algal-bacterial systems work on the principle of the symbiotic relationship between algae and bacteria. This paper comprehensively discusses the most recent studies on algal-bacterial systems for wastewater treatment, factors affecting the treatment, and aspects of resource recovery from the biomass. The algal-bacterial interaction includes cell-to-cell communication, substrate exchange, and horizontal gene transfer. The quorum sensing (QS) molecules and their effects on algal-bacterial interactions are briefly discussed. The effect of the factors such as pH, temperature, C/N/P ratio, light intensity, and external aeration on the algal-bacterial systems have been discussed. An overview of the modeling aspects of algal-bacterial systems has been provided. The algal-bacterial systems have the potential for removing micropollutants because of the diverse possible interactions between algae-bacteria. The removal mechanisms of micropollutants - sorption, biodegradation, and photodegradation, have been reviewed. The harvesting methods and resource recovery aspects have been presented. The major challenges associated with algal-bacterial systems for real scale implementation and future perspectives have been discussed. Integrating wastewater treatment with the algal biorefinery concept reduces the overall waste component in a wastewater treatment system by converting the biomass into a useful product, resulting in a sustainable system that contributes to the circular bioeconomy.
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Affiliation(s)
- Raj Kumar Oruganti
- Department of Civil Engineering, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, India
| | - Keerthi Katam
- Department of Civil Engineering, École Centrale School of Engineering, Mahindra University, India
| | - Pau Loke Show
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham, Malaysia
| | - Venkataramana Gadhamshetty
- Civil and Environmental Engineering, South Dakota School of Mines and Technology, Rapid, South Dakota, USA
| | | | - Debraj Bhattacharyya
- Department of Civil Engineering, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, India
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16
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Soyer M, Gauthey J, Maurice AC. [Challenges of managing home care product residues to protect biodiversity]. Rev Infirm 2022; 71:36-38. [PMID: 35090630 DOI: 10.1016/j.revinf.2021.11.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Healthcare professionals have a role to play in reducing micropollutant emissions from healthcare products at source. A survey was conducted on the practices of homecare workers, particularly on the management of drug residues and the recovery of excreta (urine and faeces). There are obstacles, but also levers to protect biodiversity from the toxicity of healthcare waste.
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Affiliation(s)
- Mathilde Soyer
- Laboratoire eau, environnement et systèmes urbains, école des Ponts ParisTech, 6-8 avenue Blaise-Pascal, 77420 Champs-sur-Marne, France
| | - Julien Gauthey
- Office français de la biodiversité, direction de la recherche et de l'appui scientifique, 5 square Félix-Nadar, 94300 Vincennes, France.
| | - Anne-Claire Maurice
- Laboratoire écologie, systématique et évolution, université Paris-Saclay, 362 rue du Doyen- André-Guinier, 91405 Orsay cedex, France
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17
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Gauthey J, Staub PF, Soyer M, Garnaud-Corbel S, Villemagne E, Perceval O. [ Micropollutants in aquatic environments and residues of human health care products]. Rev Infirm 2021; 70:18-19. [PMID: 34238488 DOI: 10.1016/j.revinf.2021.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
The contamination of water and natural environments by micropollutants linked to residues from health care activities (drugs, detergents, parapharmaceuticals, etc.) generates invisible, silent and alarming levels of pollution for the living world. The management of these phenomena is potentially a public health issue. It is necessary to raise awareness among caregivers in order to develop strategies for reducing pollution at the site, compatible with the multiple constraints of their care activities.
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Affiliation(s)
- Julien Gauthey
- Office français de la biodiversité, direction de la recherche et de l'appui scientifique, 5 square Félix-Nadar, 94300 Vincennes, France.
| | - Pierre-François Staub
- Office français de la biodiversité, direction de la recherche et de l'appui scientifique, 5 square Félix-Nadar, 94300 Vincennes, France
| | - Mathilde Soyer
- Laboratoire eau environnement et systèmes urbains, École nationale des ponts Paris-Tech, 6-8 avenue Blaise-Pascal, 77420 Champs-sur-Marne, France
| | - Stéphane Garnaud-Corbel
- Office français de la biodiversité, direction de la recherche et de l'appui scientifique, 5 square Félix-Nadar, 94300 Vincennes, France
| | - Estérelle Villemagne
- Office français de la biodiversité, direction de la recherche et de l'appui scientifique, 5 square Félix-Nadar, 94300 Vincennes, France
| | - Olivier Perceval
- Office français de la biodiversité, direction de la recherche et de l'appui scientifique, 5 square Félix-Nadar, 94300 Vincennes, France
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18
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Rutere C, Knoop K, Posselt M, Ho A, Horn MA. Ibuprofen Degradation and Associated Bacterial Communities in Hyporheic Zone Sediments. Microorganisms 2020; 8:E1245. [PMID: 32824323 PMCID: PMC7464344 DOI: 10.3390/microorganisms8081245] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 08/13/2020] [Accepted: 08/14/2020] [Indexed: 01/29/2023] Open
Abstract
Ibuprofen, a non-steroidal anti-inflammatory pain reliever, is among pharmaceutical residues of environmental concern ubiquitously detected in wastewater effluents and receiving rivers. Thus, ibuprofen removal potentials and associated bacteria in the hyporheic zone sediments of an impacted river were investigated. Microbially mediated ibuprofen degradation was determined in oxic sediment microcosms amended with ibuprofen (5, 40, 200, and 400 µM), or ibuprofen and acetate, relative to an un-amended control. Ibuprofen was removed by the original sediment microbial community as well as in ibuprofen-enrichments obtained by re-feeding of ibuprofen. Here, 1-, 2-, 3-hydroxy- and carboxy-ibuprofen were the primary transformation products. Quantitative real-time PCR analysis revealed a significantly higher 16S rRNA abundance in ibuprofen-amended relative to un-amended incubations. Time-resolved microbial community dynamics evaluated by 16S rRNA gene and 16S rRNA analyses revealed many new ibuprofen responsive taxa of the Acidobacteria, Actinobacteria, Bacteroidetes, Gemmatimonadetes, Latescibacteria, and Proteobacteria. Two ibuprofen-degrading strains belonging to the genera Novosphingobium and Pseudomonas were isolated from the ibuprofen-enriched sediments, consuming 400 and 300 µM ibuprofen within three and eight days, respectively. The collective results indicated that the hyporheic zone sediments sustain an efficient biotic (micro-)pollutant degradation potential, and hitherto unknown microbial diversity associated with such (micro)pollutant removal.
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Affiliation(s)
- Cyrus Rutere
- Department of Ecological Microbiology, University of Bayreuth, 95448 Bayreuth, Germany;
| | - Kirsten Knoop
- Institute of Microbiology, Leibniz University Hannover, 30419 Hannover, Germany; (K.K.); (A.H.)
| | - Malte Posselt
- Department of Environmental Science, Stockholm University, SE-106 91 Stockholm, Sweden;
| | - Adrian Ho
- Institute of Microbiology, Leibniz University Hannover, 30419 Hannover, Germany; (K.K.); (A.H.)
| | - Marcus A. Horn
- Department of Ecological Microbiology, University of Bayreuth, 95448 Bayreuth, Germany;
- Institute of Microbiology, Leibniz University Hannover, 30419 Hannover, Germany; (K.K.); (A.H.)
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19
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Kaplan A, Mamane H, Lester Y, Avisar D. Trace Organic Compound Removal from Wastewater Reverse-Osmosis Concentrate by Advanced Oxidation Processes with UV/O 3/H 2O 2. Materials (Basel) 2020; 13:E2785. [PMID: 32575623 DOI: 10.3390/ma13122785] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 06/09/2020] [Accepted: 06/16/2020] [Indexed: 11/17/2022]
Abstract
Advanced technologies, such as reverse osmosis (RO), allow the reuse of treated wastewater for direct or indirect potable use. However, even highly efficient RO systems produce ~10-15% highly contaminated concentrate as a byproduct. This wastewater RO concentrate (WWROC) is very rich in metal ions, nutrients, and hard-to-degrade trace organic compounds (TOrCs), such as pharmaceuticals, plasticizers, flame retardants, and detergents, which must be treated before disposal. WWROC could be up to 10 times more concentrated than secondary effluent. We examined the efficiency of several advanced oxidation processes (AOPs) on TOrC removal from a two-stage WWROC matrix in a pilot wastewater-treatment facility. WWROC ozonation or UV irradiation, with H2O2 addition, demonstrated efficient removal of TOrCs, varying between 21% and over 99% degradation, and indicating that radical oxidation (by HO·) is the dominant mechanism. However, AOPs are not sufficient to fully treat the WWROC, and thus, additional procedures are required to decrease metal ion and nutrient concentrations. Further biological treatment post-AOP is also highly important, to eliminate the degradable organic molecules obtained from the AOP.
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20
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Selkälä T, Suopajärvi T, Sirviö JA, Luukkonen T, Kinnunen P, de Carvalho ALCB, Liimatainen H. Surface Modification of Cured Inorganic Foams with Cationic Cellulose Nanocrystals and Their Use as Reactive Filter Media for Anionic Dye Removal. ACS Appl Mater Interfaces 2020; 12:27745-27757. [PMID: 32453939 PMCID: PMC7467544 DOI: 10.1021/acsami.0c05927] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
In this work, a surface cationized inorganic-organic hybrid foam was produced from porous geopolymer (GP) and cellulose nanocrystals (CNCs). GPs were synthesized from alkali-activated metakaolin using H2O2 as a blowing agent and hexadecyltrimethylammonium bromide (CTAB) as a surfactant. These highly porous GPs were combined at pH 7.5 with cationic CNCs that had been synthesized from dissolving pulp through periodate oxidation followed by cationization in a deep eutectic solvent. The GP-CNC hybrid foams were employed as reactive filters in the removal of the anionic dye, methyl orange (MO; 5-10 mg/L, pH 7). The effects of a mild acid wash and thermal treatments on the structure, properties, and adsorption capacity of the GPs with CNCs and MO were investigated. The CNCs aligned as films and filaments on the surfaces of the neutralized GPs and the addition of CNCs improved MO removal by up to 84% compared with the reference sample. In addition, CTAB was found to disrupt the attachment of CNCs on the pores and improve adsorption of MO in the GPs with and without CNCs.
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Affiliation(s)
- Tuula Selkälä
- Fiber
and Particle Engineering Research Unit, University of Oulu, P.O. Box 4300, FI-90014 Oulu, Finland
| | - Terhi Suopajärvi
- Fiber
and Particle Engineering Research Unit, University of Oulu, P.O. Box 4300, FI-90014 Oulu, Finland
| | - Juho Antti Sirviö
- Fiber
and Particle Engineering Research Unit, University of Oulu, P.O. Box 4300, FI-90014 Oulu, Finland
| | - Tero Luukkonen
- Fiber
and Particle Engineering Research Unit, University of Oulu, P.O. Box 4300, FI-90014 Oulu, Finland
| | - Paivo Kinnunen
- Fiber
and Particle Engineering Research Unit, University of Oulu, P.O. Box 4300, FI-90014 Oulu, Finland
| | - Ana Luiza Coelho Braga de Carvalho
- Clausthal
Technical University, Department of Mineral
and Waste Processing, Walther-Nernst-Straße 9, 38678 Clausthal-Zellerfeld, Germany
| | - Henrikki Liimatainen
- Fiber
and Particle Engineering Research Unit, University of Oulu, P.O. Box 4300, FI-90014 Oulu, Finland
- Tel: +358505659711. E-mail:
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21
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Carstens L, Cowan AR, Seiwert B, Schlosser D. Biotransformation of Phthalate Plasticizers and Bisphenol A by Marine-Derived, Freshwater, and Terrestrial Fungi. Front Microbiol 2020; 11:317. [PMID: 32180766 PMCID: PMC7059612 DOI: 10.3389/fmicb.2020.00317] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 02/13/2020] [Indexed: 12/22/2022] Open
Abstract
Phthalate esters (PEs, Phthalates) are environmentally ubiquitous as a result of their extensive use as plasticizers and additives in diverse consumer products. Considerable concern relates to their reported xenoestrogenicity and consequently, microbial-based attenuation of environmental PE concentrations is of interest to combat harmful downstream effects. Fungal PE catabolism has received less attention than that by bacteria, and particularly fungi dwelling within aquatic environments remain largely overlooked in this respect. We have compared the biocatalytic and biosorptive removal rates of di-n-butyl phthalate (DBP) and diethyl phthalate (DEP), chosen to represent two environmentally prominent PEs of differing structure and hydrophobicity, by marine-, freshwater-, and terrestrial-derived fungal strains. Bisphenol A, both an extensively used plastic additive and prominent environmental xenoestrogen, was included as a reference compound due to its well-documented fungal degradation. Partial pathways of DBP metabolization by the ecophysiologically diverse asco- and basidiomycete strains tested were proposed with the help of UPLC-QTOF-MS analysis. Species specific biochemical reaction steps contributing to DBP metabolism were also observed. The involved reactions include initial cytochrome P450-dependent monohydroxylations of DBP with subsequent further oxidation of related metabolites, de-esterification via either hydrolytic cleavage or cytochrome P450-dependent oxidative O-dealkylation, transesterification, and demethylation steps - finally yielding phthalic acid as a central intermediate in all pathways. Due to the involvement of ecophysiologically and phylogenetically diverse filamentous and yeast-like fungi native to marine, freshwater, and terrestrial habitats the results of this study outline an environmentally ubiquitous pathway for the biocatalytic breakdown of plastic additives. Beyond previous research into fungal PE metabolism which emphasizes hydrolytic de-esterification as the primary catabolic step, a prominent role of cytochrome P450 monooxygenase-catalyzed reactions is established.
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Affiliation(s)
- Lena Carstens
- Department of Environmental Microbiology, Helmholtz Centre for Environmental Research - UFZ, Leipzig, Germany
- Institute for Environmental Microbiology and Biotechnology, University of Duisburg-Essen, Essen, Germany
| | - Andrew R. Cowan
- Department of Environmental Microbiology, Helmholtz Centre for Environmental Research - UFZ, Leipzig, Germany
| | - Bettina Seiwert
- Department of Analytical Chemistry, Helmholtz-Centre for Environmental Research - UFZ, Leipzig, Germany
| | - Dietmar Schlosser
- Department of Environmental Microbiology, Helmholtz Centre for Environmental Research - UFZ, Leipzig, Germany
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22
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Oliveira BM, Zaiat M, Oliveira GHD. The contribution of selected organic substrates to the anaerobic cometabolism of sulfamethazine. J Environ Sci Health B 2019; 54:263-270. [PMID: 30628525 DOI: 10.1080/03601234.2018.1553909] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Biodegradation of organic micropollutants is likely to occur due to cometabolism by particular microbial groups. In an effort to identify the stages of anaerobic digestion potentially involved in the biodegradation of the veterinary antimicrobial sulfamethazine (SMZ), the influence of selected carbon sources (sucrose, glucose, fructose, ethanol, meat extract, cellulose, soluble starch, soy oil, acetic acid, propionic acid and butyric acid) on SMZ removal by anaerobic sludge was evaluated in short-term batch experiments. Adsorption to the granular sludge constituted a significant removal mechanism, accounting for 39% of SMZ removal in control experiments. The presence of glucose, fructose, sucrose and meat extract exerted an inducing effect on SMZ degradation, resulting in removal efficiencies of 54, 53, 58 and 61%, respectively, indicating the occurrence of cometabolism. Time courses of sucrose and meat extract degradation revealed markedly distinct organic acid profiles but resulted in similar SMZ removals. Temporal profiles of acetic and propionic acid degradation were not associated with SMZ removal, as changes in SMZ concentration were observed even after the organic acids had been completely removed. The experimental results suggest that SMZ cometabolism is not associated to sucrose hydrolysis, acetoclastic methanogenesis and acetogenesis from propionic acid.
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Affiliation(s)
- Bruna M Oliveira
- a Laboratory of Biological Processes, Center for Research, Development and Innovation in Environmental Engineering, São Carlos School of Engineering , University of São Paulo (USP) , São Carlos , São Paulo , Brazil
| | - Marcelo Zaiat
- a Laboratory of Biological Processes, Center for Research, Development and Innovation in Environmental Engineering, São Carlos School of Engineering , University of São Paulo (USP) , São Carlos , São Paulo , Brazil
| | - Guilherme H D Oliveira
- a Laboratory of Biological Processes, Center for Research, Development and Innovation in Environmental Engineering, São Carlos School of Engineering , University of São Paulo (USP) , São Carlos , São Paulo , Brazil
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23
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Gosset A, Wigh A, Bony S, Devaux A, Bayard R, Durrieu C, Brocart M, Applagnat M, Bazin C. Assessment of long term ecotoxicity of urban stormwaters using a multigenerational bioassay on Ceriodaphnia dubia: A preliminary study. J Environ Sci Health A Tox Hazard Subst Environ Eng 2018; 53:244-252. [PMID: 29120696 DOI: 10.1080/10934529.2017.1394722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Standardized ecotoxicity bioassays show some limits to assess properly long-term residual toxicity of complex mixture of pollutants often present at low concentration, such as stormwaters. Among invertebrate organisms used for ecotoxicity testing, the microcrustacean Ceriodaphnia dubia (C. dubia) is considered as one of the most sensitive, especially regarding reproduction impairment as a toxicity endpoint. Consequently, this work explores the interest to perform a multigenerational assay based on the study of the reproduction of C. dubia to assess long-term ecotoxicity of complex mixture, using stormwater samples. With this in mind, a battery of standardized bioassays (Daphnia magna mobility, Pseudokirchneriella subcapitata population growth, Heterocypris incongruens growth and one generation C. dubia reproduction inhibition assays) was performed in parallel to a three generation C. dubia reproduction inhibition assay on 2 stormwater samples. Results highlighted that while all standardized bioassays failed to reveal residual toxicity in the stormwater samples, the C. dubia multigenerational assay exhibited an higher sensitivity than the previous ones. No adverse effect was observed for the first exposed generation, but an increase in mortality and a reproduction disturbance was obtained in the second and third exposed generation depending of the sample. Further experiments are now needed to optimize the exposure protocol of this multigenerational assay.
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Affiliation(s)
- Antoine Gosset
- a Université de Lyon , ENTPE, CNRS , UMR 5023 LEHNA, 2 Rue Maurice Audin, Vaulx-en-Velin , France
- c Université de Lyon , INSA Lyon, DEEP Laboratory , EA7429 , F-69621 Villeurbanne cedex , France
| | - Adriana Wigh
- a Université de Lyon , ENTPE, CNRS , UMR 5023 LEHNA, 2 Rue Maurice Audin, Vaulx-en-Velin , France
| | - Sylvie Bony
- a Université de Lyon , ENTPE, CNRS , UMR 5023 LEHNA, 2 Rue Maurice Audin, Vaulx-en-Velin , France
- b INRA, USC LEHNA 1369, ENTPE , F-69518 Vaulx-en-Velin , France
| | - Alain Devaux
- a Université de Lyon , ENTPE, CNRS , UMR 5023 LEHNA, 2 Rue Maurice Audin, Vaulx-en-Velin , France
- b INRA, USC LEHNA 1369, ENTPE , F-69518 Vaulx-en-Velin , France
| | - Rémy Bayard
- c Université de Lyon , INSA Lyon, DEEP Laboratory , EA7429 , F-69621 Villeurbanne cedex , France
| | - Claude Durrieu
- a Université de Lyon , ENTPE, CNRS , UMR 5023 LEHNA, 2 Rue Maurice Audin, Vaulx-en-Velin , France
| | - Melissa Brocart
- a Université de Lyon , ENTPE, CNRS , UMR 5023 LEHNA, 2 Rue Maurice Audin, Vaulx-en-Velin , France
| | - Marine Applagnat
- a Université de Lyon , ENTPE, CNRS , UMR 5023 LEHNA, 2 Rue Maurice Audin, Vaulx-en-Velin , France
| | - Christine Bazin
- d PROVADEMSE, Boulevard Niels Bohr , CS 52132, 69603 Villeurbanne Cedex , France
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Cruz-González G, Julcour C, Chaumat H, Bourdon V, Ramon-Portugal F, Gaspard S, Jáuregui-Haza UJ, Delmas H. Degradation of chlordecone and beta-hexachlorocyclohexane by photolysis, (photo-)fenton oxidation and ozonation. J Environ Sci Health B 2018; 53:121-125. [PMID: 29148925 DOI: 10.1080/03601234.2017.1388682] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Intensive use of chlorinated pesticides from the 1960s to the 1990s has resulted in a diffuse contamination of soils and surface waters in the banana-producing areas of the French West Indies. The purpose of this research was, for the first time, to examine the degradation of two of these persistent pollutants - chlordecone (CLD) and beta-hexachlorocyclohexane (β-HCH) in 1 mg L-1 synthetic aqueous solutions by means of photolysis, (photo-) Fenton oxidation and ozonation processes. Fenton oxidation is not efficient for CLD and yields less than 15% reduction of β-HCH concentration in 5 h. Conversely, both molecules can be quantitatively converted under UV-Vis irradiation reaching 100% of degradation in 5 h, while combination with hydrogen peroxide and ferrous iron does not show any significant improvement except in high wavelength range (>280 nm). Ozonation exhibits comparable but lower degradation rates than UV processes. Preliminary identification of degradation products indicated that hydrochlordecone was formed during photo-Fenton oxidation of CLD, while for β-HCH the major product peak exhibited C3H3Cl2 as most abundant fragment.
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Affiliation(s)
- Germán Cruz-González
- a Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS , Toulouse , France
- b Instituto Superior de Tecnologías y Ciencias Aplicadas (InSTEC)- Universidad de La Habana , Avenida Salvador Allende No 1110 entre Infanta y Avenida Rancho Boyeros, Quinta de los Molinos, A.P. 6163, La Habana , Cuba
| | - Carine Julcour
- a Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS , Toulouse , France
| | - Hélène Chaumat
- a Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS , Toulouse , France
| | - Valérie Bourdon
- c Service Commun de Spectrométrie de Masse, Université Paul Sabatier , Porte 157, Bâtiment 2R1, 118, route de Narbonne, Toulouse Cedex 09 , France
| | - Felipe Ramon-Portugal
- d UMR CNRS/UPS/ENFA 5174 "Evolution et Diversité Biologique", École National de Formation Agronomique , 2, Route de Narbonne, BP 22687, Auzeville Tolosane, Castanet Cedex , France
| | - Sarra Gaspard
- e Laboratoire COVACHIM M2E, EA 3592, Université des Antilles et de la Guyane , BP 250, Pointe à Pitre Cedex , Guadeloupe
| | - Ulises J Jáuregui-Haza
- b Instituto Superior de Tecnologías y Ciencias Aplicadas (InSTEC)- Universidad de La Habana , Avenida Salvador Allende No 1110 entre Infanta y Avenida Rancho Boyeros, Quinta de los Molinos, A.P. 6163, La Habana , Cuba
| | - Henri Delmas
- a Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS , Toulouse , France
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Horemans B, Vandermaesen J, Sekhar A, Rombouts C, Hofkens J, Vanhaecke L, Springael D. Aminobacter sp. MSH1 invades sand filter community biofilms while retaining 2,6-dichlorobenzamide degradation functionality under C- and N-limiting conditions. FEMS Microbiol Ecol 2017; 93:3814242. [PMID: 28498947 DOI: 10.1093/femsec/fix064] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 05/10/2017] [Indexed: 11/14/2022] Open
Abstract
Aminobacter sp. MSH1 is of interest for bioaugmentation of biofiltration units in drinking water treatment plants (DWTPs) due to its ability to degrade the groundwater micropollutant 2,6-dichlorobenzamide (BAM). Using a continuous flow chamber biofilm model, MSH1 was previously shown to colonize surfaces and degrade BAM at trace concentrations as low as 1 μg/L under the oligotrophic conditions found in DWTPs. In DWTP filtration units, MSH1 has to compete with the resident biofilm microbiota for space and nutrients. Using the same model, we examined how a sand filter community (SFC) affects MSH1's BAM-degrading activity and biofilm formation under C- and N-limiting conditions when fed with trace concentrations of BAM. MSH1 was inoculated simultaneously with the SFC (co-colonization mode) or after the SFC formed a biofilm (invasion mode). MSH1 successfully established in the SFC biofilm showing growth and activity. In co-colonization mode, MSH1 decreased in number in the presence of the SFC and formed isolated colonies, while specific BAM-degradation activity increased. In the invasion mode, MSH1 also decreased in numbers in the presence of the SFC but formed mixed colonies, while specific BAM degradation was unaffected. Our results show that MSH1 invades and performs successfully in an SFC biofilm under the oligotrophic conditions of DWTPs.
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Affiliation(s)
- Benjamin Horemans
- Division of Soil and Water Management, Department of Earth and Environmental Sciences, Faculty of Bioscience Engineering, KU Leuven, Kasteelpark Arenberg 20 bus 2459, 3001 Leuven, Belgium
| | - Joke Vandermaesen
- Division of Soil and Water Management, Department of Earth and Environmental Sciences, Faculty of Bioscience Engineering, KU Leuven, Kasteelpark Arenberg 20 bus 2459, 3001 Leuven, Belgium
| | - Aswini Sekhar
- Division of Soil and Water Management, Department of Earth and Environmental Sciences, Faculty of Bioscience Engineering, KU Leuven, Kasteelpark Arenberg 20 bus 2459, 3001 Leuven, Belgium
| | - Caroline Rombouts
- Department of Veterinary Public Health and Food Safety, Faculty of Veterinary Medicine, University of Ghent, Salisburylaan 133, Ghent 9000, Belgium
| | - Johan Hofkens
- Molecular Imaging and Photonics, Department of Chemistry, Faculty of Science, KU Leuven, Celestijnenlaan 200f, bus 2404, 3001 Leuven, Belgium
| | - Lynn Vanhaecke
- Department of Veterinary Public Health and Food Safety, Faculty of Veterinary Medicine, University of Ghent, Salisburylaan 133, Ghent 9000, Belgium
| | - Dirk Springael
- Division of Soil and Water Management, Department of Earth and Environmental Sciences, Faculty of Bioscience Engineering, KU Leuven, Kasteelpark Arenberg 20 bus 2459, 3001 Leuven, Belgium
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Horemans B, Raes B, Brocatus H, T'Syen J, Rombouts C, Vanhaecke L, Hofkens J, Springael D. Genetic (In)stability of 2,6-Dichlorobenzamide Catabolism in Aminobacter sp. Strain MSH1 Biofilms under Carbon Starvation Conditions. Appl Environ Microbiol 2017; 83:e00137-17. [PMID: 28363960 DOI: 10.1128/AEM.00137-17] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Accepted: 03/24/2017] [Indexed: 01/07/2023] Open
Abstract
Aminobacter sp. strain MSH1 grows on and mineralizes the groundwater micropollutant 2,6-dichlorobenzamide (BAM) and is of interest for BAM removal in drinking water treatment plants (DWTPs). The BAM-catabolic genes in MSH1 are located on plasmid pBAM1, carrying bbdA, which encodes the conversion of BAM to 2,6-dichlorobenzoic acid (2,6-DCBA) (BbdA+ phenotype), and plasmid pBAM2, carrying gene clusters encoding the conversion of 2,6-DCBA to tricarboxylic acid (TCA) cycle intermediates (Dcba+ phenotype). There are indications that MSH1 easily loses its BAM-catabolic phenotype. We obtained evidence that MSH1 rapidly develops a population that lacks the ability to mineralize BAM when grown on nonselective (R2B medium) and semiselective (R2B medium with BAM) media. Lack of mineralization was explained by loss of the Dcba+ phenotype and corresponding genes. The ecological significance of this instability for the use of MSH1 for BAM removal in the oligotrophic environment of DWTPs was explored in lab and pilot systems. A higher incidence of BbdA+ Dcba- MSH1 cells was also observed when MSH1 was grown as a biofilm in flow chambers under C and N starvation conditions due to growth on nonselective residual assimilable organic carbon. Similar observations were made in experiments with a pilot sand filter reactor bioaugmented with MSH1. BAM conversion to 2,6-DCBA was not affected by loss of the DCBA-catabolic genes. Our results show that MSH1 is prone to BAM-catabolic instability under the conditions occurring in a DWTP. While conversion of BAM to 2,6-DCBA remains unaffected, BAM mineralization activity is at risk, and monitoring of metabolites is warranted.IMPORTANCE Bioaugmentation of dedicated biofiltration units with bacterial strains that grow on and mineralize micropollutants was suggested as an alternative for treating micropollutant-contaminated water in drinking water treatment plants (DWTPs). Organic-pollutant-catabolic genes in bacteria are often easily lost, especially under nonselective conditions, which affects the bioaugmentation success. In this study, we provide evidence that Aminobacter sp. strain MSH1, which uses the common groundwater micropollutant 2,6-dichlorobenzamide (BAM) as a C source, shows a high frequency of loss of its BAM-mineralizing phenotype due to the loss of genes that convert 2,6-DCBA to Krebs cycle intermediates when nonselective conditions occur. Moreover, we show that catabolic-gene loss also occurs in the oligotrophic environment of DWTPs, where growth of MSH1 depends mainly on the high fluxes of low concentrations of assimilable organic carbon, and hence show the ecological relevance of catabolic instability for using strain MSH1 for BAM removal in DWTPs.
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Tobias R. Communication About Micropollutants in Drinking Water: Effects of the Presentation and Psychological Processes. Risk Anal 2016; 36:2011-2026. [PMID: 26369622 DOI: 10.1111/risa.12485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
This study investigates how people change their risk perception, trust, and behavior as a consequence of being informed about the occurrence of micropollutants in drinking water. Micropollutants are substances present in extremely low concentrations that might be dangerous in higher concentrations. Data were gathered in the city of Zurich, Switzerland in 2013 using a questionnaire in which the information on micropollutants was presented differently to 12 experimental groups. Data of the key constructs were gathered before and after this information, so that causal effects could be quantified by regression analyses. Affective reactions to the information turned out to be the critical mediator of changes in risk perception (operationalized as the perceived change of quality due to pollution), which is an important determinant of changes in behavior and trust. Also, direct effects of affective reactions on behavior and trust were observed. Trust before appraising risks reduces negative affective reactions; however, it also reduces perceived quality (i.e., increases risk perception) and trust after risks are appraised. The different forms of information mainly influenced the participants' affective reactions, but they also influenced perceived quality. The presentation with the least negative effects was a comparison of the intake of the substance by water with intake by food. The experimental design with repeated measurement that considers trust as a determinant and consequence of risk perception uncovered positive and negative effects of trust before appraising risks on changes of risk perception and trust due to appraising risks.
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Affiliation(s)
- Robert Tobias
- Department of Environmental Social Sciences, Eawag (Swiss Federal Institute of Aquatic Science and Technology), 8600, Dübendorf, Switzerland
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Clark ES, Pompini M, Uppal A, Wedekind C. Genetic correlations and little genetic variance for reaction norms may limit potential for adaptation to pollution by ionic and nanoparticulate silver in a whitefish (Salmonidae). Ecol Evol 2016; 6:2751-62. [PMID: 27066251 PMCID: PMC4798832 DOI: 10.1002/ece3.2088] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Revised: 02/11/2016] [Accepted: 02/22/2016] [Indexed: 12/19/2022] Open
Abstract
For natural populations to adapt to anthropogenic threats, heritable variation must persist in tolerance traits. Silver nanoparticles, the most widely used engineered nanoparticles, are expected to increase in concentrations in freshwaters. Little is known about how these particles affect wild populations, and whether genetic variation persists in tolerance to permit rapid evolutionary responses. We sampled wild adult whitefish and crossed them in vitro full factorially. In total, 2896 singly raised embryos of 48 families were exposed to two concentrations (0.5 μg/L; 100 μg/L) of differently sized silver nanoparticles or ions (silver nitrate). These doses were not lethal; yet higher concentrations prompted embryos to hatch earlier and at a smaller size. The induced hatching did not vary with nanoparticle size and was stronger in the silver nitrate group. Additive genetic variation for hatching time was significant across all treatments, with no apparent environmental dependencies. No genetic variation was found for hatching plasticity. We found some treatment‐dependent heritable variation for larval length and yolk volume, and one instance of additive genetic variation for the reaction norm on length at hatching. Our assessment suggests that the effects of silver exposure on additive genetic variation vary according to trait and silver source. While the long‐term fitness consequences of low‐level silver exposure on whitefish embryos must be further investigated to determine whether it is, in fact, detrimental, our results suggest that the evolutionary potential for adaptation to these types of pollutants may be low.
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Affiliation(s)
- Emily S Clark
- Department of Ecology and Evolution Biophore University of Lausanne 1015 Lausanne Switzerland
| | - Manuel Pompini
- Department of Ecology and Evolution Biophore University of Lausanne 1015 Lausanne Switzerland
| | - Anshu Uppal
- Department of Ecology and Evolution Biophore University of Lausanne 1015 Lausanne Switzerland
| | - Claus Wedekind
- Department of Ecology and Evolution Biophore University of Lausanne 1015 Lausanne Switzerland
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