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Borreca A, Vuilleumier S, Imfeld G. Combined effects of micropollutants and their degradation on prokaryotic communities at the sediment-water interface. Sci Rep 2024; 14:16840. [PMID: 39039186 PMCID: PMC11263610 DOI: 10.1038/s41598-024-67308-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Accepted: 07/10/2024] [Indexed: 07/24/2024] Open
Abstract
Pesticides and pharmaceuticals enter aquatic ecosystems as complex mixtures. Various processes govern their dissipation and effect on the sediment and surface waters. These micropollutants often show persistence and can adversely affect microorganisms even at low concentrations. We investigated the dissipation and effects on procaryotic communities of metformin (antidiabetic drug), metolachlor (agricultural herbicide), and terbutryn (herbicide in building materials). These contaminants were introduced individually or as a mixture (17.6 µM per micropollutant) into laboratory microcosms mimicking the sediment-water interface. Metformin and metolachlor completely dissipated within 70 days, whereas terbutryn persisted. Dissipation did not differ whether the micropollutants were introduced individually or as part of a mixture. Sequence analysis of 16S rRNA gene amplicons evidenced distinct responses of prokaryotic communities in both sediment and water. Prokaryotic community variations were mainly driven by matrix composition and incubation time. Micropollutant exposure played a secondary but influential role, with pronounced effects of recalcitrant metolachlor and terbutryn within the micropollutant mixture. Antagonistic and synergistic non-additive effects were identified for specific taxa across taxonomic levels in response to the micropollutant mixture. This study underscores the importance of considering the diversity of interactions between micropollutants, prokaryotic communities, and their respective environments when examining sediment-water interfaces affected by multiple contaminants.
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Affiliation(s)
- Adrien Borreca
- Institut Terre Et Environnement de Strasbourg, UMR 7063 CNRS, ENGEES, Université de Strasbourg, 67000, Strasbourg, France
- Génétique Moléculaire, Génomique, Microbiologie, UMR 7156 CNRS, Université de Strasbourg, Strasbourg, France
| | - Stéphane Vuilleumier
- Génétique Moléculaire, Génomique, Microbiologie, UMR 7156 CNRS, Université de Strasbourg, Strasbourg, France
| | - Gwenaël Imfeld
- Institut Terre Et Environnement de Strasbourg, UMR 7063 CNRS, ENGEES, Université de Strasbourg, 67000, Strasbourg, France.
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Rodríguez-Ramos J, Oliverio A, Borton MA, Danczak R, Mueller BM, Schulz H, Ellenbogen J, Flynn RM, Daly RA, Schopflin L, Shaffer M, Goldman A, Lewandowski J, Stegen JC, Wrighton KC. Spatial and temporal metagenomics of river compartments reveals viral community dynamics in an urban impacted stream. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.04.04.535500. [PMID: 37066413 PMCID: PMC10104031 DOI: 10.1101/2023.04.04.535500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/18/2023]
Abstract
Although river ecosystems comprise less than 1% of Earth's total non-glaciated area, they are critical modulators of microbially and virally orchestrated global biogeochemical cycles. However, most studies either use data that is not spatially resolved or is collected at timepoints that do not reflect the short life cycles of microorganisms. As a result, the relevance of microbiome interactions and the impacts they have over time on biogeochemical cycles are poorly understood. To assess how viral and microbial communities change over time, we sampled surface water and pore water compartments of the wastewater-impacted River Erpe in Germany every 3 hours over a 48-hour period resulting in 32 metagenomes paired to geochemical and metabolite measurements. We reconstructed 6,500 viral and 1,033 microbial genomes and found distinct communities associated with each river compartment. We show that 17% of our vMAGs clustered to viruses from other ecosystems like wastewater treatment plants and rivers. Our results also indicated that 70% of the viral community was persistent in surface waters, whereas only 13% were persistent in the pore waters taken from the hyporheic zone. Finally, we predicted linkages between 73 viral genomes and 38 microbial genomes. These putatively linked hosts included members of the Competibacteraceae, which we suggest are potential contributors to carbon and nitrogen cycling. Together, these findings demonstrate that microbial and viral communities in surface waters of this urban river can exist as stable communities along a flowing river; and raise important considerations for ecosystem models attempting to constrain dynamics of river biogeochemical cycles.
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Prieto-Espinoza M, Di Chiara Roupert R, Belfort B, Weill S, Imfeld G. Reactive transport of micropollutants in laboratory aquifers undergoing transient exposure periods. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 856:159170. [PMID: 36198349 DOI: 10.1016/j.scitotenv.2022.159170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 09/26/2022] [Accepted: 09/28/2022] [Indexed: 06/16/2023]
Abstract
Groundwater quality is of increasing concern due to the ubiquitous occurrence of micropollutant mixtures. Stream-groundwater interactions near agricultural and urban areas represent an important entry pathway of micropollutants into shallow aquifers. Here, we evaluated the biotransformation of a micropollutant mixture (i.e., caffeine, metformin, atrazine, terbutryn, S-metolachlor and metalaxyl) during lateral stream water flow to adjacent groundwater. We used an integrative approach combining concentrations and transformation products (TPs) of the micropollutants, compound-specific isotope analysis (δ13C and δ15N), sequencing of 16S rRNA gene amplicons and reactive transport modeling. Duplicate laboratory aquifers (160 cm × 80 cm × 7 cm) were fed with stream water and subjected over 140 d to three successive periods of micropollutant exposures as pulse-like (6000 μg L-1) and constant (600 μg L-1) injections under steady-state conditions. Atrazine, terbutryn, S-metolachlor and metalaxyl persisted in both aquifers during all periods (<10 % attenuation). Metformin attenuation (up to 14 %) was only observed from 90 d onwards, suggesting enhanced degradation over time. In contrast, caffeine dissipated during all injection periods (>90 %), agreeing with fast degradation rates (t1/2 < 3 d) in parallel microcosm experiments and detection of TPs (theobromine and xanthine). Significant stable carbon isotope fractionation (Δδ13C ≥ 6.6 ‰) was observed for caffeine in both aquifers, whereas no enrichment in 15N occurred. A concentration dependence of caffeine biotransformation in the aquifers was further suggested by model simulations following Michaelis-Menten kinetics. Changes in bacterial community composition reflected long-term bacterial adaptation to micropollutant exposures. Altogether, the use of an integrative approach can help to understand the interplay of subsurface hydrochemistry, bacterial adaptations and micropollutants biotransformation during stream-groundwater interactions.
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Affiliation(s)
- Maria Prieto-Espinoza
- Université de Strasbourg, CNRS/EOST, ITES UMR 7063, Institut Terre et Environnement de Strasbourg, Strasbourg, France
| | - Raphaël Di Chiara Roupert
- Université de Strasbourg, CNRS/EOST, ITES UMR 7063, Institut Terre et Environnement de Strasbourg, Strasbourg, France
| | - Benjamin Belfort
- Université de Strasbourg, CNRS/EOST, ITES UMR 7063, Institut Terre et Environnement de Strasbourg, Strasbourg, France
| | - Sylvain Weill
- Université de Strasbourg, CNRS/EOST, ITES UMR 7063, Institut Terre et Environnement de Strasbourg, Strasbourg, France
| | - Gwenaël Imfeld
- Université de Strasbourg, CNRS/EOST, ITES UMR 7063, Institut Terre et Environnement de Strasbourg, Strasbourg, France.
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Höhne A, Müller BM, Schulz H, Dara R, Posselt M, Lewandowski J, McCallum JL. Fate of trace organic compounds in the hyporheic zone: Influence of microbial metabolism. WATER RESEARCH 2022; 224:119056. [PMID: 36126632 DOI: 10.1016/j.watres.2022.119056] [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: 04/15/2022] [Revised: 09/01/2022] [Accepted: 09/02/2022] [Indexed: 06/15/2023]
Abstract
The hyporheic zone (HZ) is considered a hydrodynamically-driven bioreactor with significant pollutant removal capacities and can therefore not only improve wholestream water quality but also preserve human and ecosystem health. Microbial metabolism is hypothesized to play a key role in pollutant transformation in hyporheic sediments of natural streams. However, previous work investigating the influence of microbial metabolism on pollutant transformation has been predominantly laboratory studies. The key challenge for field studies is the appropriate determination of net microbial metabolism, i.e. information on the actual exposure times to specific microbial processes in the investigated system. The present study uses reactive fluorescent tracers to determine microbial metabolism and ultimately its influence on pollutant transformation, e.g. for trace organic compounds, in hyporheic sediments under natural conditions. In particular, the reactive fluorescent tracers resazurin and its main transformation product resorufin were used to determine the microbial metabolism of facultative or obligate aerobes. The influence of the derived microbial metabolism on the transformation of 20 trace organic compounds, such as pharmaceuticals, including 3 parent-daughter pairs, was examined. The present findings validate laboratory results on the microbially-mediated transformation of the anticonvulsant gabapentin to its main transformation product gabapentin lactam under natural conditions. All other TrOCs investigated did not show a clear link between TrOC reactivity to the microbial metabolism informed by the resazurin-resorufin-system. Overall, the present study not only demonstrates the use of the fluorescent tracer-system resazurin and resorufin for determining microbial metabolism of facultative or obligate aerobes but also generally highlights the potential of reactive fluorescent tracers to disentangle specific reactive properties and ultimately their influence on the fate of pollutants in natural HZs.
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Affiliation(s)
- Anja Höhne
- School of Earth Sciences, University of Western Australia, Perth, Western Australia, Australia; Department Ecohydrology and Biogeochemistry, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Müggelseedamm 310, 12587 Berlin, Germany.
| | - Birgit M Müller
- Department Ecohydrology and Biogeochemistry, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Müggelseedamm 310, 12587 Berlin, Germany; Chair of Water Quality Engineering, Technical University Berlin, Strasse des 17. Juni, 10623 Berlin, Germany
| | - Hanna Schulz
- Department Ecohydrology and Biogeochemistry, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Müggelseedamm 310, 12587 Berlin, Germany; Department Geography, Humboldt University Berlin, Rudower Chaussee 16, 12489 Berlin, Germany
| | - Rebwar Dara
- Department Ecohydrology and Biogeochemistry, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Müggelseedamm 310, 12587 Berlin, Germany; Department of Earth Sciences and Petroleum, College of Science, Salahaddin University-Erbil, Erbil, Iraq
| | - Malte Posselt
- Department of Environmental Science, Stockholm University, 11418 Stockholm, Sweden
| | - Jörg Lewandowski
- Department Ecohydrology and Biogeochemistry, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Müggelseedamm 310, 12587 Berlin, Germany; Department Geography, Humboldt University Berlin, Rudower Chaussee 16, 12489 Berlin, Germany
| | - James L McCallum
- School of Earth Sciences, University of Western Australia, Perth, Western Australia, Australia
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Zheng S, Wang Y, Chen C, Zhou X, Liu Y, Yang J, Geng Q, Chen G, Ding Y, Yang F. Current Progress in Natural Degradation and Enhanced Removal Techniques of Antibiotics in the Environment: A Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph191710919. [PMID: 36078629 PMCID: PMC9518397 DOI: 10.3390/ijerph191710919] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 08/22/2022] [Accepted: 08/30/2022] [Indexed: 05/14/2023]
Abstract
Antibiotics are used extensively throughout the world and their presence in the environment has caused serious pollution. This review summarizes natural methods and enhanced technologies that have been developed for antibiotic degradation. In the natural environment, antibiotics can be degraded by photolysis, hydrolysis, and biodegradation, but the rate and extent of degradation are limited. Recently, developed enhanced techniques utilize biological, chemical, or physicochemical principles for antibiotic removal. These techniques include traditional biological methods, adsorption methods, membrane treatment, advanced oxidation processes (AOPs), constructed wetlands (CWs), microalgae treatment, and microbial electrochemical systems (such as microbial fuel cells, MFCs). These techniques have both advantages and disadvantages and, to overcome disadvantages associated with individual techniques, hybrid techniques have been developed and have shown significant potential for antibiotic removal. Hybrids include combinations of the electrochemical method with AOPs, CWs with MFCs, microalgal treatment with activated sludge, and AOPs with MFCs. Considering the complexity of antibiotic pollution and the characteristics of currently used removal technologies, it is apparent that hybrid methods are better choices for dealing with antibiotic contaminants.
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Affiliation(s)
- Shimei Zheng
- College of Chemistry and Chemical and Environmental Engineering, Weifang University, Weifang 261061, China
| | - Yandong Wang
- Department of Pediatrics, Weifang People’s Hospital, Weifang 261041, China
| | - Cuihong Chen
- College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China
| | - Xiaojing Zhou
- College of Chemistry and Chemical and Environmental Engineering, Weifang University, Weifang 261061, China
| | - Ying Liu
- College of Chemistry and Chemical and Environmental Engineering, Weifang University, Weifang 261061, China
| | - Jinmei Yang
- College of Chemistry and Chemical and Environmental Engineering, Weifang University, Weifang 261061, China
| | - Qijin Geng
- College of Chemistry and Chemical and Environmental Engineering, Weifang University, Weifang 261061, China
| | - Gang Chen
- College of Chemistry and Chemical and Environmental Engineering, Weifang University, Weifang 261061, China
| | - Yongzhen Ding
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China
- Correspondence: (Y.D.); (F.Y.)
| | - Fengxia Yang
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China
- Correspondence: (Y.D.); (F.Y.)
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Bech TB, Stehrer T, Jakobsen R, Badawi N, Schostag MD, Hinsby K, Aamand J, Hellal J. Degradation potential of MCPA, metolachlor and propiconazole in the hyporheic sediments of an agriculturally impacted river. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 834:155226. [PMID: 35461929 DOI: 10.1016/j.scitotenv.2022.155226] [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: 01/13/2022] [Revised: 04/06/2022] [Accepted: 04/08/2022] [Indexed: 06/14/2023]
Abstract
Hyporheic sediments are influenced by physical, biological, and chemical processes due to the interactions with river water and has been shown to play an important role in the environmental fate of pesticides. Therefore, this study evaluated the bacterial degradation potential of MCPA, metolachlor and propiconazole in hyporheic sediments sampled along a 20 km long stretch of an agriculturally impacted river dominated primarily by water losing conditions. Water physicochemical parameters in the river and nearby groundwater wells were assessed along with pesticide sorption to sediments and bacterial community composition. Degradation and mineralisation batch experiments were set up from six locations (five water losing, one water gaining) using environmentally relevant concentrations of pesticides (10 μg kg-1). Highly variable DT50 values from 11 to 44 days for MCPA, 11-27 days for metolachlor (MTC) and 60-147 days for propiconazole were calculated based on ~140 day studies. Degradation of MTC led to accumulation of the transformation products MOA and MESA in batch experiments. Noteworthy, MESA was detected in the groundwater wells adjacent to the part of the river impacted by losing conditions suggesting that degradation processes in hyporheic sediments may lead to the formation of transformation products (TP) leaching towards groundwater. Further, from propiconazole was identified a persistent transformation product being different from 1,2,4-triazole. Specific calculated DT50 values could not the linked to bacterial diversity. However, generally all sediment samples were characterised by high bacterial diversity, where approximately 80% of the relative sequence abundances were < 1%, which may increase the likelihood of finding contaminant-degrading genes, thereby explaining the general high contaminant-degrading activity. The studied sediments revealed a high potential to degrade pesticides despite only being exposed to low diffuse pollutant concentrations that is similar to calculated DT50 values in agricultural soils.
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Affiliation(s)
- Tina B Bech
- Geological Survey of Denmark and Greenland, Department of Geochemistry, DK-1350 Copenhagen, Denmark.
| | - Thomas Stehrer
- Proteomics Service Laboratory, Institute of Physiology and Institute of Molecular Genetics, Czech Academy of Sciences, 142 00 Prague, Czech Republic
| | - Rasmus Jakobsen
- Geological Survey of Denmark and Greenland, Department of Geochemistry, DK-1350 Copenhagen, Denmark
| | - Nora Badawi
- Geological Survey of Denmark and Greenland, Department of Geochemistry, DK-1350 Copenhagen, Denmark
| | - Morten D Schostag
- Technical University of Denmark, Department of Biotechnology and Biomedicine, 2800 Kgs. Lyngby, Denmark
| | - Klaus Hinsby
- Geological Survey of Denmark and Greenland, Department of Hydrology, DK-1350 Copenhagen, Denmark
| | - Jens Aamand
- Geological Survey of Denmark and Greenland, Department of Geochemistry, DK-1350 Copenhagen, Denmark
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Zhang X, Wei F, Bao T, Wang S. Target adsorption of indomethacin sodium from aqueous solutions using mixed-ligand MIL-101(Cr). J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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8
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Distribution and Ecological Risk Assessment of Pharmaceuticals and Personal Care Products in Sediments of North Canal, China. WATER 2022. [DOI: 10.3390/w14131999] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The pollution of water bodies by pharmaceuticals and personal care products (PPCPs) has attracted widespread concern due to their widespread use and pseudo-persistence, but their effects on sediments are less known. In this study, solid-phase extraction-high performance liquid chromatography–tandem mass spectrometry (SPE-LC/MSMS) was used to investigate the occurrence and ecological risks of five typical pharmaceuticals and personal care products (PPCPs) in thirteen key reservoirs, sluices, dams, and estuaries in the Haihe River Basin. At the same time, the PPCP exchanges of surface water, groundwater, and sediments in three typical sections were studied. Finally, the PPCP’s environmental risk is evaluated through the environmental risk quotient. The results showed that the five PPCPs were tri-methoprazine (TMP), sinolamine (SMX), ibuprofen (IBU), triclosan (TCS), and caffeine (CAF). The average concentration of these PPCPs ranged from 0 to 481.19 μg/kg, with relatively high concentrations of TCS and CAF. The relationship between PPCPs in the surface sediments was analyzed to reveal correlations between SMX and TMP, CAF and IBU, CAF and TCS. The risk quotients (RQ) method was used to evaluate the ecological risk of the five detected PPCPs. The major contributors of potential environmental risks were IBU, TCS and CAF, among which all the potential environmental risks at the TCS samples were high risk. This study supplemented the research on the ecological risk of PPCPs in sediments of important reaches of the North Canal to reveal the importance of PPCP control in the North Canal and provided a scientific basis for pollution control and risk prevention of PPCPs.
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Ma L, Liu Y, Yang Q, Jiang L, Li G. Occurrence and distribution of Pharmaceuticals and Personal Care Products (PPCPs) in wastewater related riverbank groundwater. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 821:153372. [PMID: 35085625 DOI: 10.1016/j.scitotenv.2022.153372] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 01/19/2022] [Accepted: 01/20/2022] [Indexed: 06/14/2023]
Abstract
Pharmaceutical and personal care products (PPCPs) are among the most frequently reported groups of emerging contaminants in groundwater worldwide. PPCPs in rivers may infiltrate into groundwater through hydraulic exchange and potentially threaten drinking water safety and human health. In the present study, the occurrence and distribution of nine PPCPs in riverbank groundwater and adjacent rivers (distance up to 113 m) were investigated at four sites with different lithological features and permeabilities of aquifers in a city in North China. Seven of nine PPCPs were detectable in groundwater, ranging from <LOQ (limit of quantification) to 128 ng/L. N,N-diethyl-meta-toluamide (DEET), carbamazepine, and caffeine had the highest detection frequencies (>90%). The concentrations and major compounds in river water varied with the sampling location and water system distribution, resulting in distinct compositions of PPCPs in the groundwater at each site along with different lithology and hydrological conditions. The spatial distribution of PPCPs in riverbank groundwater was affected by the hydraulic connection between the groundwater and river and the lithology of aquifers. Direct hydraulic connection of a fine sand aquifer to the adjacent river caused a decrease in PPCPs with increasing distance. The results also suggested that sandy gravel aquifers had a lower capacity to attenuate PPCPs compared to that of fine sand. Significant correlations between PPCP concentrations and thirteen physicochemical factors of groundwater were discovered, including nitrate, potassium, and manganese. Overall, this study provides important evidence on the role of lithology and hydrological conditions on the composition, distribution, and influential physicochemical factors of PPCPs in riverbank groundwater.
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Affiliation(s)
- Lin Ma
- National Engineering Research Centre of Urban Environmental Pollution Control, Beijing Key Laboratory for Risk Modeling and Remediation of Contaminated Sites, Beijing Municipal Research Institute of Eco-Environmental Protection, Beijing 100037, China; School of Environment and State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Yifei Liu
- School of Environment and State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China; Technical Centre for Soil, Agriculture and Rural Ecology and Environment, Ministry of Ecology and Environment, Beijing 100012, China
| | - Qing Yang
- Beijing Institute of Hydrogeology and Engineering Geology, Beijing 100195, China
| | - Lin Jiang
- National Engineering Research Centre of Urban Environmental Pollution Control, Beijing Key Laboratory for Risk Modeling and Remediation of Contaminated Sites, Beijing Municipal Research Institute of Eco-Environmental Protection, Beijing 100037, China.
| | - Guanghe Li
- School of Environment and State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China.
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de Carvalho Filho JAA, da Cruz HM, Fernandes BS, Motteran F, de Paiva ALR, Pereira Cabral JJDS. Efficiency of the bank filtration technique for diclofenac removal: A review. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 300:118916. [PMID: 35104558 DOI: 10.1016/j.envpol.2022.118916] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 01/07/2022] [Accepted: 01/26/2022] [Indexed: 06/14/2023]
Abstract
Bank filtration (BF) has been employed for more than a century for the production of water with a better quality, and it has been showing satisfactory results in diclofenac attenuation. Considered the most administered analgesic in the world, diclofenac has been frequently detected in water bodies. Besides being persistent in the environment, this compound is not completely removed by the conventional water treatments, drinking water treatment plants (DWTPs) and wastewater treatment plant (WWTPs). BF has a high complexity, whose efficiency depends on the characteristics of the observed pollutant and on the environment where the system in installed, which is why this is a topic that has been constantly studied. Nevertheless, studies present the behavior of diclofenac during the BF process. In this context, this research performed the evaluation of the factors and the biogeochemical processes that influence the efficiency of the BF technique in diclofenac removal. The aerobic conditions, higher temperatures, microbial biomass density, hydrogen potential close to neutrality and sediments with heterogeneous fractions are considered the ideal conditions in the aquifer for diclofenac removal. Nonetheless, there is no consensus on which of these factors has the greatest contribution on the mechanism of attenuation during BF. Studies with columns in laboratory and modeling affirm that the highest degradation rates occur in the first centimeters (5-50 cm) of the passage of water through the porous medium, in the environment known as hyporheic zone, where intense biogeochemical activities occur. Research has shown 100% removal efficiency for diclofenac persistent to compounds not removed during the BF process. However, half of the studies had removal efficiency that ranged between 80 and 100%. Therefore, the performance of more in-depth studies on the degradation and mobility of this compound becomes necessary for a better understanding of the conditions and biogeochemical processes which act in its attenuation.
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Affiliation(s)
- José Adson Andrade de Carvalho Filho
- Federal University of Pernambuco (UFPE), Department of Civil and Environmental Engineering (DECIV), Av. da Arquitetura, s/n. Cidade Universitária, 50740-550, Recife, Pernambuco, Brazil
| | - Hedmun Matias da Cruz
- Federal University of Pernambuco (UFPE), Department of Civil and Environmental Engineering (DECIV), Av. da Arquitetura, s/n. Cidade Universitária, 50740-550, Recife, Pernambuco, Brazil
| | - Bruna Soares Fernandes
- Federal University of Pernambuco (UFPE), Department of Civil and Environmental Engineering (DECIV), Av. da Arquitetura, s/n. Cidade Universitária, 50740-550, Recife, Pernambuco, Brazil
| | - Fabrício Motteran
- Federal University of Pernambuco (UFPE), Department of Civil and Environmental Engineering (DECIV), Av. da Arquitetura, s/n. Cidade Universitária, 50740-550, Recife, Pernambuco, Brazil
| | - Anderson Luiz Ribeiro de Paiva
- Federal University of Pernambuco (UFPE), Department of Civil and Environmental Engineering (DECIV), Av. da Arquitetura, s/n. Cidade Universitária, 50740-550, Recife, Pernambuco, Brazil.
| | - Jaime Joaquim da Silva Pereira Cabral
- Federal University of Pernambuco (UFPE), Department of Civil and Environmental Engineering (DECIV), Av. da Arquitetura, s/n. Cidade Universitária, 50740-550, Recife, Pernambuco, Brazil
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11
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Zhao S, Wang J, Feng S, Xiao Z, Chen C. Effects of ecohydrological interfaces on migrations and transformations of pollutants: A critical review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 804:150140. [PMID: 34509841 DOI: 10.1016/j.scitotenv.2021.150140] [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: 07/01/2021] [Revised: 08/24/2021] [Accepted: 08/31/2021] [Indexed: 06/13/2023]
Abstract
With the rapid development of society, the soil and water environments in many countries are suffering from severe pollution. Pollutants in different phases will eventually gather into the soil and water environments, and a series of migrations and transformations will take place at ecohydrological interfaces with water flow. However, it is still not clear how ecohydrological interfaces affect the migration and the transformation of pollutants. Therefore, this paper summarizes the physical, ecological, and biogeochemical characteristics of ecohydrological interfaces on the basis of introducing the development history of ecohydrology and the concept of ecohydrological interfaces. The effects of ecohydrological interfaces on the migration and transformation of heavy metals, organic pollutants, and carbon‑nitrogen‑phosphorus (C-N-P) pollutants are emphasized. Lastly, the prospects of applying ecohydrological interfaces for the removal of pollutants from the soil and water environment are put forward, including strengthening the ability to monitor and simulate ecohydrological systems at micro and macro scales, enhancing interdisciplinary research, and identifying main influencing factors that can provide theoretical basis and technical support.
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Affiliation(s)
- Shan Zhao
- College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China; College of Civil Engineering, Tongji University, Shanghai 200092, China
| | - Jianhua Wang
- College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
| | - Shijin Feng
- College of Civil Engineering, Tongji University, Shanghai 200092, China.
| | - Zailun Xiao
- College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
| | - Chunyan Chen
- College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
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12
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Höhne A, Lewandowski J, Schaper JL, McCallum JL. Determining hyporheic removal rates of trace organic compounds using non-parametric conservative transport with multiple sorption models. WATER RESEARCH 2021; 206:117750. [PMID: 34678696 DOI: 10.1016/j.watres.2021.117750] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 10/06/2021] [Accepted: 10/07/2021] [Indexed: 06/13/2023]
Abstract
Assessing the transport and reactive processes of contaminants in freshwater streams is crucial in managing water resources sustainably. Particularly the hyporheic zone, the sediment-water interface where surface water and groundwater mix, may possess significant contaminant removal capacities due to its myriad physical, chemical, and microbiological processes. However, modelling approaches aiming at assessing the hyporheic zone's reactivity are either based on simple assumptions, such as, predefining the shape of the residence times distribution (RTD) function, or are computationally not feasible due to a too detailed system characterisation. In addition, parent-daughter reactions of contaminants are barely investigated. The present study introduces a numerical modelling framework for assessing hyporheic reactions of contaminant transformation reactions based on a non-parametric residence time approach combined with multiple sorption models and first-order removal reactions. The proposed framework uses natural electrical conductivity fluctuations to determine conservative transport properties and is demonstrated by interpreting time series of hyporheic point measurements of trace organic compounds, such as pharmaceuticals, and their transformation products using two commonly-used sorption models, namely the simple retardation and the first-order kinetic sorption model. The developed approach gives similar reaction rate coefficient estimates for all contaminants considered for both sorption models tested. The findings highlight that (i) the accurate shape of the RTD is most certainly important for reactive parameter determination and (ii) the daughter reaction rate coefficient may be underestimated if its parent transformation is ignored. The model provides reactive parameter estimates of contaminant transformation reactions with high parameter identifiability and informs which specific parent-daughter-pathway has occurred.
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Affiliation(s)
- Anja Höhne
- School of Earth Sciences, University of Western Australia, Crawley, WA, Australia; Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Ecohydrology and Biogeochemistry, Müggelseedamm 310, Berlin 12587, Germany.
| | - Jörg Lewandowski
- Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Ecohydrology and Biogeochemistry, Müggelseedamm 310, Berlin 12587, Germany; Humboldt University Berlin, Geography Department, Rudower Chaussee 16, Berlin 12489, Germany
| | - Jonas L Schaper
- Center for Applied Geoscience, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - James L McCallum
- School of Earth Sciences, University of Western Australia, Crawley, WA, Australia
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13
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Zhi H, Mianecki AL, Kolpin DW, Klaper RD, Iwanowicz LR, LeFevre GH. Tandem field and laboratory approaches to quantify attenuation mechanisms of pharmaceutical and pharmaceutical transformation products in a wastewater effluent-dominated stream. WATER RESEARCH 2021; 203:117537. [PMID: 34416647 DOI: 10.1016/j.watres.2021.117537] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 08/05/2021] [Indexed: 06/13/2023]
Abstract
Evolving complex mixtures of pharmaceuticals and transformation products in effluent-dominated streams pose potential impacts to aquatic species; thus, understanding the attenuation dynamics in the field and characterizing the prominent attenuation mechanisms of pharmaceuticals and their transformation products (TPs) is critical for hazard assessments. Herein, we determined the attenuation dynamics and the associated prominent mechanisms of pharmaceuticals and their corresponding TPs via a combined long-term field study and controlled laboratory experiments. For the field study, we quantified spatiotemporal exposure concentrations of five pharmaceuticals and six associated TPs in a small, temperate-region effluent-dominated stream during baseflow conditions where the wastewater plant was the main source of pharmaceuticals. We selected four sites (upstream, at, and two progressively downstream from effluent discharge) and collected water samples at 16 time points (64 samples in total, approximately twice monthly, depending on flows) for 1 year. Concurrently, we conducted photolysis, sorption, and biodegradation batch tests under controlled conditions to determine the major attenuation mechanisms. We observed 10-fold greater attenuation rates in the field compared to batch tests, demonstrating that connecting laboratory batch tests with field measurements to enhance predictive power is a critical need. Batch systems alone, often used for assessment, are useful for determining fate processes but poorly approximate in-stream attenuation kinetics. Sorption was the dominant attenuation process (t1/2<7.7 d) for 5 of 11 compounds in the batch tests, while the other compounds (n = 6) persisted in the batch tests and along the 5.1 km stream reach. In-stream parent-to-product transformation was minimal. Differential attenuation contributed to the evolving pharmaceutical mixture and created changing exposure conditions with concomitant implications for aquatic and terrestrial biota. Tandem field and laboratory characterization can better inform modeling efforts for transport and risk assessments.
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Affiliation(s)
- Hui Zhi
- Department of Civil & Environmental Engineering, University of Iowa, 4105 Seamans Center, Iowa City, IA 52242, United States; IIHR-Hydroscience & Engineering, 100 C. Maxwell Stanley Hydraulics Laboratory, Iowa City, IA 52242, United States
| | - Alyssa L Mianecki
- Department of Civil & Environmental Engineering, University of Iowa, 4105 Seamans Center, Iowa City, IA 52242, United States; IIHR-Hydroscience & Engineering, 100 C. Maxwell Stanley Hydraulics Laboratory, Iowa City, IA 52242, United States
| | - Dana W Kolpin
- U.S. Geological Survey, Central Midwest Water Science Center, 400 S. Clinton St, Rm 269 Federal Building, Iowa City, IA 52240, United States
| | - Rebecca D Klaper
- University of Wisconsin-Milwaukee, Great Lakes Water Institute, 600 E. Greenfield Ave, Milwaukee, WI 53204, United States
| | - Luke R Iwanowicz
- U.S. Geological Survey, Eastern Ecological Science Center, 11649 Leetown Road, Kearneysville, WV 25430, United States
| | - Gregory H LeFevre
- Department of Civil & Environmental Engineering, University of Iowa, 4105 Seamans Center, Iowa City, IA 52242, United States; IIHR-Hydroscience & Engineering, 100 C. Maxwell Stanley Hydraulics Laboratory, Iowa City, IA 52242, United States.
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14
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Zhang L, Zhang C, Lian K, Liu C. Effects of chronic exposure of antibiotics on microbial community structure and functions in hyporheic zone sediments. JOURNAL OF HAZARDOUS MATERIALS 2021; 416:126141. [PMID: 34492930 DOI: 10.1016/j.jhazmat.2021.126141] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 02/06/2021] [Accepted: 05/13/2021] [Indexed: 06/13/2023]
Abstract
Microbial communities in hyporheic zones (HZ) provide vital biogeochemical functions such as contaminant degradation for river ecosystems. Antibiotics are contaminants that have been increasingly detected in HZ sediments. In this study, sediments from different HZ locations in a contaminated river, Maozhou river, China were sampled and analyzed using qPCR and high-throughput sequencing to investigate the effect of antibiotic contamination on microbial community structures and functions in HZ sediments. Results indicated that types and concentrations of antibiotics in HZ sediments were heterogeneously distributed that were largely consistent with the distribution of antibiotic sources. Sediments near animal farm and hospital contained higher antibiotic concentrations compared with those from mainstream. The distribution of ARGs was well correlated with antibiotics. Bacterial indicator genera indicating differences between mainstream area and other sampling areas were positively correlated with antibiotics, suggesting the influences of antibiotics on reshaping microbial community structures. PICRUSt revealed positive relationships between antibiotics and predicted functional genes involved in defense, signal transduction, and recombination and repair. This imply the defensive response of microbial communities on antibiotic attack. These results indicated that antibiotic contamination in the watershed posed a potential risk on HZ microbial community structures and functions, which may further threaten river ecosystem functions.
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Affiliation(s)
- Lili Zhang
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, 1088 Xueyuan Road, Shenzhen 518055, China
| | - Cheng Zhang
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, 1088 Xueyuan Road, Shenzhen 518055, China
| | - Keting Lian
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, 1088 Xueyuan Road, Shenzhen 518055, China
| | - Chongxuan Liu
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, 1088 Xueyuan Road, Shenzhen 518055, China.
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15
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Broecker T, Sobhi Gollo V, Fox A, Lewandowski J, Nützmann G, Arnon S, Hinkelmann R. High-Resolution Integrated Transport Model for Studying Surface Water-Groundwater Interaction. GROUND WATER 2021; 59:488-502. [PMID: 33368208 DOI: 10.1111/gwat.13071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 12/14/2020] [Accepted: 12/21/2020] [Indexed: 06/12/2023]
Abstract
Transport processes that lead to exchange of mass between surface water and groundwater play a significant role for the ecological functioning of aquatic systems, for hydrological processes and for biogeochemical transformations. In this study, we present a novel integral modeling approach for flow and transport at the sediment-water interface. The model allows us to simultaneously simulate turbulent surface and subsurface flow and transport with the same conceptual approach. For this purpose, a conservative transport equation was implemented to an existing approach that uses an extended version of the Navier-Stokes equations. Based on previous flume studies which investigated the spreading of a dye tracer under neutral, losing and gaining flow conditions the new solver is validated. Tracer distributions of the experiments are in close agreement with the simulations. The simulated flow paths are significantly affected by in- and outflowing groundwater flow. The highest velocities within the sediment are found for losing condition, which leads to shorter residence times compared to neutral and gaining conditions. The largest extent of the hyporheic exchange flow is observed under neutral condition. The new solver can be used for further examinations of cases that are not suitable for the conventional coupled models, for example, if Reynolds numbers are larger than 10. Moreover, results gained with the integral solver provide high-resolution information on pressure and velocity distributions at the rippled streambed, which can be used to improve flow predictions. This includes the extent of hyporheic exchange under varying ambient groundwater flow conditions.
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Affiliation(s)
- Tabea Broecker
- Chair of Water Resources Management and Modeling of Hydrosystems, Technische Universität Berlin, Berlin, Germany
| | - Vahid Sobhi Gollo
- Chair of Water Resources Management and Modeling of Hydrosystems, Technische Universität Berlin, Berlin, Germany
| | - Aryeh Fox
- Department of Environmental Hydrology and Microbiology, Zuckerberg Institute for Water Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus, Israel
| | - Jörg Lewandowski
- Ecohydrology Department, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Berlin, Germany
- Geography Department, Humboldt-University Berlin, Berlin, Germany
| | - Gunnar Nützmann
- Ecohydrology Department, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Berlin, Germany
- Geography Department, Humboldt-University Berlin, Berlin, Germany
| | - Shai Arnon
- Department of Environmental Hydrology and Microbiology, Zuckerberg Institute for Water Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus, Israel
| | - Reinhard Hinkelmann
- Chair of Water Resources Management and Modeling of Hydrosystems, Technische Universität Berlin, Berlin, Germany
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16
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Peralta-Maraver I, Stubbington R, Arnon S, Kratina P, Krause S, de Mello Cionek V, Leite NK, da Silva ALL, Thomaz SM, Posselt M, Milner VS, Momblanch A, Moretti MS, Nóbrega RLB, Perkins DM, Petrucio MM, Reche I, Saito V, Sarmento H, Strange E, Taniwaki RH, White J, Alves GHZ, Robertson AL. The riverine bioreactor: An integrative perspective on biological decomposition of organic matter across riverine habitats. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 772:145494. [PMID: 33581537 DOI: 10.1016/j.scitotenv.2021.145494] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 01/21/2021] [Accepted: 01/25/2021] [Indexed: 06/12/2023]
Abstract
Riverine ecosystems can be conceptualized as 'bioreactors' (the riverine bioreactor) which retain and decompose a wide range of organic substrates. The metabolic performance of the riverine bioreactor is linked to their community structure, the efficiency of energy transfer along food chains, and complex interactions among biotic and abiotic environmental factors. However, our understanding of the mechanistic functioning and capacity of the riverine bioreactor remains limited. We review the state of knowledge and outline major gaps in the understanding of biotic drivers of organic matter decomposition processes that occur in riverine ecosystems, across habitats, temporal dimensions, and latitudes influenced by climate change. We propose a novel, integrative analytical perspective to assess and predict decomposition processes in riverine ecosystems. We then use this model to analyse data to demonstrate that the size-spectra of a community can be used to predict decomposition rates by analysing an illustrative dataset. This modelling methodology allows comparison of the riverine bioreactor's performance across habitats and at a global scale. Our integrative analytical approach can be applied to advance understanding of the functioning and efficiency of the riverine bioreactor as hotspots of metabolic activity. Application of insights gained from such analyses could inform the development of strategies that promote the functioning of the riverine bioreactor across global ecosystems.
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Affiliation(s)
- Ignacio Peralta-Maraver
- Departamento de Ecología, Universidad de Granada, Granada, Spain; Department of Life Sciences, Roehampton University, London, UK.
| | - Rachel Stubbington
- School of Science and Technology, Nottingham Trent University, Nottingham, UK
| | - Shai Arnon
- Zuckerberg Institute for Water Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Beersheba, Israel
| | - Pavel Kratina
- School of Biological and Chemical Sciences, Queen Mary University of London, London, UK
| | - Stefan Krause
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, UK
| | - Vivian de Mello Cionek
- Programa de Pós-Graduação em Ciência e Tecnologia Ambiental, Universidade do Vale do Itajaí, Itajaí, Santa Catarina, Brazil
| | - Nei Kavaguichi Leite
- Department of Ecology and Zoology, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Aurea Luiza Lemes da Silva
- Department of Ecology and Zoology, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | | | - Malte Posselt
- Department of Environmental Science, Stockholm University, Stockholm, Sweden
| | | | - Andrea Momblanch
- Cranfield Water Science Institute, Cranfield University, Cranfield, UK
| | - Marcelo S Moretti
- Laboratory of Aquatic Insect Ecology, Universidade Vila Velha, Vila Velha, Espírito Santo, Brazil
| | - Rodolfo L B Nóbrega
- Department of Life Sciences, Imperial College London, Silwood Park Campus, Buckhurst Road, Ascot SL5 7PY, UK
| | | | - Mauricio M Petrucio
- Department of Ecology and Zoology, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Isabel Reche
- Departamento de Ecología, Universidad de Granada, Granada, Spain
| | - Victor Saito
- Departamento de Ciências Ambientais, Universidade Federal de São Carlos, São Carlos, São Paulo, Brazil
| | - Hugo Sarmento
- Department of Hydrobiology, Universidade Federal de São Carlos, São Carlos, São Paulo, Brazil
| | - Emily Strange
- Institute of Environmental Sciences, Leiden University, Leiden, the Netherlands
| | - Ricardo Hideo Taniwaki
- Centro de Engenharia, Modelagem e Ciências Sociais Aplicadas, Universidade Federal do ABC, Santo André, São Paulo, Brazil
| | - James White
- River Restoration Centre, Cranfield University, Cranfield, Bedfordshire, UK
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17
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Invertebrate Responses to Restoration across Benthic and Hyporheic Stream Compartments. WATER 2021. [DOI: 10.3390/w13070996] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
River restoration is a multi-billion-dollar business, yet it is unclear whether benthic community health, which is routinely monitored, can be used as a proxy for the health of the hyporheos. Applying a Before-After-Control-Impact approach to a UK case study, we compared the effects of removing an impoundment on the hyporheos with effects on the benthos. We compared invertebrate biological traits that we expected to respond to the restoration. We constructed sample-size based diversity curves and determined β-diversity between compartments and reaches. Two years post-restoration, hyporheic taxon richness was significantly lower in the restored reach compared to the control. However, three years post-restoration taxon richness was significantly higher in the impact reach. The composition of the control and impact reach hyporheos was most dissimilar at the first sampling time point post-restoration and at this time there was a universal decrease in the relative abundance of burrowing organisms respiring through gills. We did not detect a signal of restoration on benthic assemblage diversity and composition, perhaps because reach-scale restorations can be overwhelmed by catchment-scale disturbances. Thus, the hyporheos and the benthos responded differently to restoration. Given the importance of the hyporheic zone in the provision of ecosystem function and services, it is clear that it should be included in future monitoring protocols that aim to assess river restoration success.
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18
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Simultaneous attenuation of trace organics and change in organic matter composition in the hyporheic zone of urban streams. Sci Rep 2021; 11:4179. [PMID: 33603043 PMCID: PMC7892836 DOI: 10.1038/s41598-021-83750-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 02/08/2021] [Indexed: 11/23/2022] Open
Abstract
Trace organic compounds (TrOCs) enter rivers with discharge of treated wastewater. These effluents can contain high loads of dissolved organic matter (DOM). In a 48 h field study, we investigated changes in molecular composition of seven DOM compound classes (FTICR-MS) and attenuation of 17 polar TrOCs in a small urban stream receiving treated wastewater. Correlations between TrOCs and DOM were used to identify simultaneous changes in surface water and the hyporheic zone. Changes in TrOC concentrations in surface water ranged between a decrease of 29.2% for methylbenzotriazole and an increase of 152.2% for the transformation product gabapentin-lactam. In the hyporheic zone, only decreasing TrOC concentrations were observed, ranging from 4.9% for primidone to 93.8% for venlafaxine . TrOC attenuation coincided with a decline of molecular diversity of easily biodegradable DOM compound classes while molecular diversity of poorly biodegradable DOM compound classes increased. This concurrence indicates similar or linked attenuation pathways for biodegradable DOM and TrOCs. Strong correlations between TrOCs and DOM compound classes as well as high attenuation of TrOCs primarily occurred in the hyporheic zone. This suggests high potential for DOM turnover and TrOC mitigation in rivers if hyporheic exchange is sufficient.
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19
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The Significance of Vertical and Lateral Groundwater–Surface Water Exchange Fluxes in Riverbeds and Riverbanks: Comparing 1D Analytical Flux Estimates with 3D Groundwater Modelling. WATER 2021. [DOI: 10.3390/w13030306] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Riverbed temperature profiles are frequently used to estimate vertical river–aquifer exchange fluxes. Often in this approach, strictly vertical flow is assumed. However, riverbeds are heterogeneous structures often characterised by complex flow fields, possibly violating this assumption. We characterise the meter-scale variability of river–aquifer interaction at two sections of the Aa River, Belgium, and compare vertical flux estimates obtained with a 1D analytical solution to the heat transport equation with fluxes simulated with a 3D groundwater model (MODFLOW) using spatially distributed fields of riverbed hydraulic conductivity. Based on 115 point-in-time riverbed temperature profiles, vertical flux estimates that are obtained with the 1D solution are found to be higher near the banks than in the center of the river. The total exchange flux estimated with the 3D groundwater model is around twice as high as the estimate based on the 1D solution, while vertical flux estimates from both methods are within a 10% margin. This is due to an important contribution of non-vertical flows, especially through the riverbanks. Quasi-vertical flow is only found near the center of the river. This quantitative underestimation should be considered when interpreting exchange fluxes based on 1D solutions. More research is necessary to assess conditions for which using a 1D analytical approach is justified to more accurately characterise river–aquifer exchange fluxes.
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20
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Fate of Trace Organic Compounds in Hyporheic Zone Sediments of Contrasting Organic Carbon Content and Impact on the Microbiome. WATER 2020. [DOI: 10.3390/w12123518] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The organic carbon in streambed sediments drives multiple biogeochemical reactions, including the attenuation of organic micropollutants. An attenuation assay using sediment microcosms differing in the initial total organic carbon (TOC) revealed higher microbiome and sorption associated removal efficiencies of trace organic compounds (TrOCs) in the high-TOC compared to the low-TOC sediments. Overall, the combined microbial and sorption associated removal efficiencies of the micropollutants were generally higher than by sorption alone for all compounds tested except propranolol whose removal efficiency was similar via both mechanisms. Quantitative real-time PCR and time-resolved 16S rRNA gene amplicon sequencing revealed that higher bacterial abundance and diversity in the high-TOC sediments correlated with higher microbial removal efficiencies of most TrOCs. The bacterial community in the high-TOC sediment samples remained relatively stable against the stressor effects of TrOC amendment compared to the low-TOC sediment community that was characterized by a decline in the relative abundance of most phyla except Proteobacteria. Bacterial genera that were significantly more abundant in amended relative to unamended sediment samples and thus associated with biodegradation of the TrOCs included Xanthobacter, Hyphomicrobium, Novosphingobium, Reyranella and Terrimonas. The collective results indicated that the TOC content influences the microbial community dynamics and associated biotransformation of TrOCs as well as the sorption potential of the hyporheic zone sediments.
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21
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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] [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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22
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Posselt M, Mechelke J, Rutere C, Coll C, Jaeger A, Raza M, Meinikmann K, Krause S, Sobek A, Lewandowski J, Horn MA, Hollender J, Benskin JP. Bacterial Diversity Controls Transformation of Wastewater-Derived Organic Contaminants in River-Simulating Flumes. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:5467-5479. [PMID: 32251587 PMCID: PMC7304871 DOI: 10.1021/acs.est.9b06928] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 03/21/2020] [Accepted: 04/06/2020] [Indexed: 05/22/2023]
Abstract
Hyporheic zones are the water-saturated flow-through subsurfaces of rivers which are characterized by the simultaneous occurrence of multiple physical, biological, and chemical processes. Two factors playing a role in the hyporheic attenuation of organic contaminants are sediment bedforms (a major driver of hyporheic exchange) and the composition of the sediment microbial community. How these factors act on the diverse range of organic contaminants encountered downstream from wastewater treatment plants is not well understood. To address this knowledge gap, we investigated dissipation half-lives (DT50s) of 31 substances (mainly pharmaceuticals) under different combinations of bacterial diversity and bedform-induced hyporheic flow using 20 recirculating flumes in a central composite face factorial design. By combining small-volume pore water sampling, targeted analysis, and suspect screening, along with quantitative real-time PCR and time-resolved amplicon Illumina MiSeq sequencing, we determined a comprehensive set of DT50s, associated bacterial communities, and microbial transformation products. The resulting DT50s of parent compounds ranged from 0.5 (fluoxetine) to 306 days (carbamazepine), with 20 substances responding significantly to bacterial diversity and four to both diversity and hyporheic flow. Bacterial taxa that were associated with biodegradation included Acidobacteria (groups 6, 17, and 22), Actinobacteria (Nocardioides and Illumatobacter), Bacteroidetes (Terrimonas and Flavobacterium) and diverse Proteobacteria (Pseudomonadaceae, Sphingomonadaceae, and Xanthomonadaceae). Notable were the formation of valsartan acid from irbesartan and valsartan, the persistence of N-desmethylvenlafaxine across all treatments, and the identification of biuret as a novel transformation product of metformin. Twelve additional target transformation products were identified, which were persistent in either pore or surface water of at least one treatment, indicating their environmental relevance.
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Affiliation(s)
- Malte Posselt
- Department
of Environmental Science (ACES), Stockholm
University, Svante Arrhenius väg 8, SE-11418 Stockholm, Sweden
| | - Jonas Mechelke
- Eawag,
Swiss Federal Institute of Aquatic Science and Technology, Überlandstr. 133, CH 8600 Dübendorf, Switzerland
- Institute
of Biogeochemistry and Pollutant Dynamics, ETH Zurich, 8092 Zürich, Switzerland
| | - Cyrus Rutere
- Department
of Ecological Microbiology, University of
Bayreuth, Bayreuth, Germany
| | - Claudia Coll
- Department
of Environmental Science (ACES), Stockholm
University, Svante Arrhenius väg 8, SE-11418 Stockholm, Sweden
- Eawag,
Swiss Federal Institute of Aquatic Science and Technology, Überlandstr. 133, CH 8600 Dübendorf, Switzerland
| | - Anna Jaeger
- Department
Ecohydrology, Leibniz-Institute of Freshwater
Ecology and Inland Fisheries, Berlin, Germany
- Geography
Department, Humboldt University Berlin, Berlin, Germany
| | - Muhammad Raza
- Technical
University of Darmstadt, Institute of Applied
Geosciences, Darmstadt, Germany
- IWW
Water Centre, Mülheim an
der Ruhr, Germany
| | - Karin Meinikmann
- Department
Ecohydrology, Leibniz-Institute of Freshwater
Ecology and Inland Fisheries, Berlin, Germany
- Julius
Kühn-Institute, Institute for Ecological Chemistry, Plant Analysis and Stored Product Protection, Berlin, Germany
| | - Stefan Krause
- School
of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham, U.K.
| | - Anna Sobek
- Department
of Environmental Science (ACES), Stockholm
University, Svante Arrhenius väg 8, SE-11418 Stockholm, Sweden
| | - Jörg Lewandowski
- Department
Ecohydrology, Leibniz-Institute of Freshwater
Ecology and Inland Fisheries, Berlin, Germany
- Geography
Department, Humboldt University Berlin, Berlin, Germany
| | - Marcus A. Horn
- Department
of Ecological Microbiology, University of
Bayreuth, Bayreuth, Germany
- Institute
of Microbiology, Leibniz University of Hannover, Herrenhäuser Str. 2, DE-30167 Hannover, Germany
| | - Juliane Hollender
- Eawag,
Swiss Federal Institute of Aquatic Science and Technology, Überlandstr. 133, CH 8600 Dübendorf, Switzerland
- Institute
of Biogeochemistry and Pollutant Dynamics, ETH Zurich, 8092 Zürich, Switzerland
| | - Jonathan P. Benskin
- Department
of Environmental Science (ACES), Stockholm
University, Svante Arrhenius väg 8, SE-11418 Stockholm, Sweden
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23
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Comer-Warner S, Knapp JLA, Blaen P, Klaar M, Shelley F, Zarnetske J, Lee-Cullin J, Folegot S, Kurz M, Lewandowski J, Harvey J, Ward A, Mendoza-Lera C, Ullah S, Datry T, Kettridge N, Gooddy D, Drummond J, Martí E, Milner A, Hannah D, Krause S. The method controls the story - Sampling method impacts on the detection of pore-water nitrogen concentrations in streambeds. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 709:136075. [PMID: 31887527 DOI: 10.1016/j.scitotenv.2019.136075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 12/09/2019] [Accepted: 12/09/2019] [Indexed: 06/10/2023]
Abstract
Biogeochemical gradients in streambeds are steep and can vary over short distances often making adequate characterisation of sediment biogeochemical processes challenging. This paper provides an overview and comparison of streambed pore-water sampling methods, highlighting their capacity to address gaps in our understanding of streambed biogeochemical processes. This work reviews and critiques available pore-water sampling techniques to characterise streambed biogeochemical conditions, including their characteristic spatial and temporal resolutions, and associated advantages and limitations. A field study comparing three commonly-used pore-water sampling techniques (multilevel mini-piezometers, miniature drivepoint samplers and diffusive equilibrium in thin-film gels) was conducted to assess differences in observed nitrate and ammonium concentration profiles. Pore-water nitrate concentrations did not differ significantly between sampling methods (p-value = 0.54) with mean concentrations of 2.53, 4.08 and 4.02 mg l-1 observed with the multilevel mini-piezometers, miniature drivepoint samplers and diffusive equilibrium in thin-film gel samplers, respectively. Pore-water ammonium concentrations, however, were significantly higher in pore-water extracted by multilevel mini-piezometers (3.83 mg l-1) and significantly lower where sampled with miniature drivepoint samplers (1.05 mg l-1, p-values <0.01). Differences in observed pore-water ammonium concentration profiles between active (suction: multilevel mini-piezometers) and passive (equilibrium; diffusive equilibrium in thin-film gels) samplers were further explored under laboratory conditions. Measured pore-water ammonium concentrations were significantly greater when sampled by diffusive equilibrium in thin-film gels than with multilevel mini-piezometers (all p-values ≤0.02). The findings of this study have critical implications for the interpretation of field-based research on hyporheic zone biogeochemical cycling and highlight the need for more systematic testing of sampling protocols. For the first time, the impact of different active and passive pore-water sampling methods is addressed systematically here, highlighting to what degree the choice of pore-water sampling methods affects research outcomes, with relevance for the interpretation of previously published work as well as future studies.
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Affiliation(s)
- Sophie Comer-Warner
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK.
| | - Julia L A Knapp
- Center for Applied Geoscience, University of Tübingen, Tübingen, Germany
| | - Phillip Blaen
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Megan Klaar
- School of Geography and Water, University of Leeds, Leeds, UK
| | - Felicity Shelley
- School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Road, London E1 4NS, UK
| | - Jay Zarnetske
- Department of Earth and Environmental Sciences, Michigan State University, East Lansing, MI, USA
| | - Joseph Lee-Cullin
- Department of Earth and Environmental Sciences, Michigan State University, East Lansing, MI, USA
| | - Silvia Folegot
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Marie Kurz
- Department of Hydrogeology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany; Patrick Center for Environmental Research, The Academy of Natural Sciences of Drexel University, Philadelphia, PA, USA
| | - Jorg Lewandowski
- Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Department of Ecohydrology, Müggelseedamm 310, D-12587 Berlin, Germany
| | - Judson Harvey
- U.S. Geological Survey, Earth System Processes Division, Reston, VA, USA
| | - Adam Ward
- School of Public and Environmental Affairs, Indiana University, Bloomington, IN, USA
| | - Clara Mendoza-Lera
- IRSTEA, UR MALY, Centre de Lyon, 5 rue de la Doua BP 32108, 69616 Villeurbanne Cedex, France
| | - Sami Ullah
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Thibault Datry
- IRSTEA, UR MALY, Centre de Lyon, 5 rue de la Doua BP 32108, 69616 Villeurbanne Cedex, France
| | - Nicholas Kettridge
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Daren Gooddy
- British Geological Survey, Maclean Building, Wallingford, Oxfordshire OX10 8BB, UK
| | - Jennifer Drummond
- Integrative Freshwater Ecology Group, Center for Advanced Studies of Blanes (CEAB-CSIC), Blanes, Girona, Spain
| | - Eugènia Martí
- Integrative Freshwater Ecology Group, Center for Advanced Studies of Blanes (CEAB-CSIC), Blanes, Girona, Spain
| | - Alexander Milner
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - David Hannah
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Stefan Krause
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
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24
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Hyporheic Process Restoration: Design and Performance of an Engineered Streambed. WATER 2020. [DOI: 10.3390/w12020425] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Stream restoration designed specifically to enhance hyporheic processes has seldom been contemplated. To gain experience with hyporheic restoration, an engineered streambed was built using a gravel mixture formulated to mimic natural streambed composition, filling an over-excavated channel to a minimum depth of 90 cm. Specially designed plunge-pool structures, built with subsurface gravel extending down to 2.4 m, promoted greatly enhanced hyporheic circulation, path length, and residence time. Hyporheic process enhancement was verified using intra-gravel temperature mapping to document the distribution and strength of upwelling and downwelling zones, computation of vertical water flux using diurnal streambed temperature patterns, estimation of hyporheic zone cross section using sodium chloride tracer studies, and repeat measurements of streambed sand content to document evolution of the engineered streambed over time. Results showed that vertical water flux in the vicinity of plunge-pool structures was quite large, averaging 89 times the pre-construction rate, and 17 times larger than maximum rates measured in a pristine stream in Idaho. Upwelling and downwelling strengths in the constructed channel were larger and more spatially diverse than in the control. Streambed sand content showed a variety of response over time, indicating that rapid return to an embedded, impermeable state is not occurring.
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25
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Yu X, Sui Q, Lyu S, Zhao W, Cao X, Wang J, Yu G. Do high levels of PPCPs in landfill leachates influence the water environment in the vicinity of landfills? A case study of the largest landfill in China. ENVIRONMENT INTERNATIONAL 2020; 135:105404. [PMID: 31865278 DOI: 10.1016/j.envint.2019.105404] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Revised: 12/09/2019] [Accepted: 12/09/2019] [Indexed: 06/10/2023]
Abstract
Landfill leachates are identified as a significant source of pharmaceutical and personal care products (PPCPs), which might pose a threat to groundwater and surface water nearby the landfill. However, knowledge of PPCP contamination in the surrounding water environment of landfills is very limited. Here we investigated eighteen PPCPs in water environment near the largest landfill in China, focusing on their occurrences and spatial distribution, as well as the environmental risks. The results showed the concentration of target PPCPs was below the limit of quantification (<LOQ) to 53.6 ng/L in the adjacent groundwater samples, decreasing with the distance of sampling sites from landfill. The composition pattern of PPCPs in the groundwater was similar to that in raw landfill leachate. These observations indicated a considerable impact of raw landfill leachates on PPCP contamination in the nearby groundwater. In surface water samples, the occurrence of PPCPs was not consistent with that in raw or treated landfill leachates, but similar to that in the same watershed far away from landfill. Spatially, no obvious difference in the PPCPs concentrations was observed, indicating negligible contribution of landfill on PPCPs in surrounding surface water. The findings allowed the first insights into the impacts of well-constructed and managed landfills on PPCP contamination in the surrounding water environment.
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Affiliation(s)
- Xia Yu
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Qian Sui
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.
| | - Shuguang Lyu
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Wentao Zhao
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Xuqi Cao
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Jiusi Wang
- Civil and Environmental Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060, USA
| | - Gang Yu
- Beijing Key Laboratory of Emerging Organic Contaminants Control, School of Environment, Tsinghua University, Beijing 100084, China
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26
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Aziemah Abd Rashid N, Abustan I. Application of Artificial Barrier as Mitigation of E. coliWhich Pass through Riverbank Filtration. NEW INSIGHT INTO BRUCELLA INFECTION AND FOODBORNE DISEASES 2020. [DOI: 10.5772/intechopen.86079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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27
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The effect of unsteady streamflow and stream-groundwater interactions on oxygen consumption in a sandy streambed. Sci Rep 2019; 9:19735. [PMID: 31875013 PMCID: PMC6930257 DOI: 10.1038/s41598-019-56289-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 12/03/2019] [Indexed: 11/25/2022] Open
Abstract
Streamflow dynamics are often ignored when studying biogeochemical processes in the hyporheic zone. We explored the interactive effects of unsteady streamflow and groundwater fluxes on the delivery and consumption of oxygen within the hyporheic zone using a recirculating flume packed with natural sandy sediments. The flume was equipped with a programmable streamflow control and drainage system that was used to impose losing and gaining fluxes. Tracer tests were used to measure hyporheic exchange flux and a planar optode was used to measure subsurface oxygen concentration patterns. It was found that the volume of the oxic zone decreased when the losing flux declined, and was drastically decreased when gaining conditions were applied. It was also found that unsteady streamflow led to a slight increase in the average volume of the oxic zone, compared to the average volume of the oxic zone under steady streamflow. However, the average oxygen consumption rates were significantly higher under unsteady streamflow compared to steady streamflow under all groundwater conditions with the exception of the highest losing flux. The present study provides the first insight into the interactions between streamflow unsteadiness and losing/gaining fluxes and improve understanding of their impact on microbial metabolism in the hyporheic zone.
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28
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Co-Design of Engineered Hyporheic Zones to Improve In-Stream Stormwater Treatment and Facilitate Regulatory Approval. WATER 2019. [DOI: 10.3390/w11122543] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Green infrastructure is an increasingly popular approach to mitigate widespread degradation of urban waters from stormwater pollution. However, many stormwater best management practices (BMPs) have inconsistent water quality performance and are limited to on-site, land-based deployments. To address basin-wide pollutant loads still reaching urban streams, hyporheic zone engineering has been proposed as an in-stream treatment strategy. Recognizing that regulator and practitioner perspectives are essential for innovation in the water sector, we interviewed U.S. water management professionals about the perceived risks, opportunities, and knowledge gaps related to in-stream stormwater treatment. We used engineered hyporheic zones as a case study to understand interviewee perspectives on an emerging class of in-stream treatment technologies. Interviews revealed that many considerations for in-stream stormwater treatment are common to land-based BMPs, but in-stream BMPs have additional unique design and siting requirements. Here, we synthesize practitioner goals, their recommendations on in-stream BMP design, and open research questions related to in-stream BMPs. Many interviewees suggested pairing engineered hyporheic zones with other BMPs in a treatment train to improve in-stream treatment, while simultaneously reducing risk and cost. We discuss how treatment trains and other strategies might also help overcome regulatory hurdles for innovative stormwater treatment.
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29
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Mechelke J, Vermeirssen ELM, Hollender J. Passive sampling of organic contaminants across the water-sediment interface of an urban stream. WATER RESEARCH 2019; 165:114966. [PMID: 31437634 DOI: 10.1016/j.watres.2019.114966] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2019] [Revised: 08/07/2019] [Accepted: 08/08/2019] [Indexed: 06/10/2023]
Abstract
Passive sampling is a well-established tool for monitoring time-weighted average concentrations of polar and semi-polar organic contaminants in streams at flow velocities between 0.1 and 0.4 m s-1. However, its application under low-flow conditions (10-5 to 0.01 m s-1) - as encountered in hyporheic zones - has been scarcely reported. In this study, 3 novel passive sampler configurations were developed for the monitoring of (semi-)polar organic pollutants and related transformation products across the water-sediment interface and thus across varying hydrodynamic conditions. Their design was inspired by Chemcatcher and diffusive gradients in thin films for organics. To determine the most optimal sampler design, an uptake experiment was completed involving the 3 novel passive sampler configurations and a reference Chemcatcher in polar configuration. The experiments consisted of a circular flume that simulated the main channel of a stream and an aquarium with stagnant water that represented the underlying hyporheic zone. The systems were exposed to 192 organic pollutants at environmental concentrations, and the samplers were then collected, extracted and analyzed using liquid chromatography high-resolution mass spectrometry after 2, 6 and 14 days. The configuration that was most insensitive to different hydrodynamic conditions consisted of a reversed-phase sulfonated styrenedivinylbenzene disk as the receiving phase that was covered by an agarose diffusion gel and topped with a polyethersulfone membrane filter. To further evaluate its environmental application, samplers were installed downstream of a sewage treatment plant located at an urban stream in Berlin, Germany (Erpe). The samplers were mounted on custom-made holders which were subsequently embedded in the stream bed to position samplers above (0.30 m) and within the sediment (-0.15/-0.30/-0.45 m) for 11 days. Target and suspect screening workflows were then applied to identify common concentration patterns and link parent attenuation to transformation product formation. A total of 104 concentration profiles were determined, suggesting the efficiency of the proposed sampling strategy in the water-sediment interface. Valsartan acid was the only known transformation product indicative of hyporheic zone-driven attenuation as its concentration in porewater by far exceeded its concentration in surface water. Similar patterns were observed for a larger list of suspected transformation products, of which a sotalol transformation product was tentatively identified. Overall, the established sampling methodology can be effectively used to quantify organic contaminants during low-flow conditions and is suitable for the characterization of attenuation patterns of organic pollutants in hyporheic zones.
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Affiliation(s)
- Jonas Mechelke
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600, Dübendorf, Switzerland; Institute of Biogeochemistry and Pollutant Dynamics, ETH Zurich, 8092, Zürich, Switzerland
| | | | - Juliane Hollender
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600, Dübendorf, Switzerland; Institute of Biogeochemistry and Pollutant Dynamics, ETH Zurich, 8092, Zürich, Switzerland.
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30
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Kiefer K, Müller A, Singer H, Hollender J. New relevant pesticide transformation products in groundwater detected using target and suspect screening for agricultural and urban micropollutants with LC-HRMS. WATER RESEARCH 2019; 165:114972. [PMID: 31450217 DOI: 10.1016/j.watres.2019.114972] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 08/05/2019] [Accepted: 08/09/2019] [Indexed: 05/12/2023]
Abstract
Groundwater is a major drinking water resource, but its quality is threatened by a broad variety of anthropogenic micropollutants (MPs), originating from agriculture, industry, or households, and undergoing various transformation processes during subsurface passage. To determine a worst-case impact of pesticide application in agriculture on groundwater quality, a target and suspect screening for more than 300 pesticides and more than 1100 pesticide transformation products (TPs) was performed in 31 Swiss groundwater samples which predominantly originated from areas with intensive agriculture. To assess additional urban contamination sources, more than 250 common urban MPs were quantified. Most of the screened pesticide TPs were experimentally observed by the pesticide producers within the European pesticide registration. To cover very polar pesticide TPs, vacuum-assisted evaporative concentration was used for enrichment, followed by liquid chromatography high-resolution tandem mass spectrometry (LC-HRMS/MS). Based on intensity, isotope pattern, retention time, and in silico fragmentation, the suspect hits were prioritised and verified. We identified 22 suspects unequivocally and five tentatively; 13 TPs are reported here for the first time to be detected in groundwater. In 13 out of 31 groundwater samples, the total concentration of the 20 identified and quantified suspects (1 pesticide and 19 pesticide TPs) exceeded the total concentration of the 519 targets (236 pesticides and TPs; 283 urban MPs) for which we screened. Pesticide TPs had higher concentrations than the parent pesticides, illustrating their importance for groundwater quality. The newly identified very polar chlorothalonil TP R471811 was the only compound detected in all samples with concentrations ranging from 3 to 2700 ng/L. Agricultural MP concentration and detection frequency correlated with agricultural land use in the catchment, except for aquifers, where protective top layers reduced MP transport from the surface. In contrast to agricultural MPs, urban MPs displayed almost no correlation with land use. The dominating entry pathway of urban MPs was river bank filtration.
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Affiliation(s)
- Karin Kiefer
- Eawag: Swiss Federal Institute of Aquatic Science and Technology, Ueberlandstrasse 133, 8600, Duebendorf, Switzerland; Institute of Biogeochemistry and Pollutant Dynamics, Universitätstrasse 16, ETH Zürich, 8092, Zurich, Switzerland
| | - Adrian Müller
- Eawag: Swiss Federal Institute of Aquatic Science and Technology, Ueberlandstrasse 133, 8600, Duebendorf, Switzerland
| | - Heinz Singer
- Eawag: Swiss Federal Institute of Aquatic Science and Technology, Ueberlandstrasse 133, 8600, Duebendorf, Switzerland
| | - Juliane Hollender
- Eawag: Swiss Federal Institute of Aquatic Science and Technology, Ueberlandstrasse 133, 8600, Duebendorf, Switzerland; Institute of Biogeochemistry and Pollutant Dynamics, Universitätstrasse 16, ETH Zürich, 8092, Zurich, Switzerland.
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31
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Abstract
Rivers are important ecosystems under continuous anthropogenic stresses. The hyporheic zone is a ubiquitous, reactive interface between the main channel and its surrounding sediments along the river network. We elaborate on the main physical, biological, and biogeochemical drivers and processes within the hyporheic zone that have been studied by multiple scientific disciplines for almost half a century. These previous efforts have shown that the hyporheic zone is a modulator for most metabolic stream processes and serves as a refuge and habitat for a diverse range of aquatic organisms. It also exerts a major control on river water quality by increasing the contact time with reactive environments, which in turn results in retention and transformation of nutrients, trace organic compounds, fine suspended particles, and microplastics, among others. The paper showcases the critical importance of hyporheic zones, both from a scientific and an applied perspective, and their role in ecosystem services to answer the question of the manuscript title. It identifies major research gaps in our understanding of hyporheic processes. In conclusion, we highlight the potential of hyporheic restoration to efficiently manage and reactivate ecosystem functions and services in river corridors.
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32
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Warner W, Licha T, Nödler K. Qualitative and quantitative use of micropollutants as source and process indicators. A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 686:75-89. [PMID: 31176825 DOI: 10.1016/j.scitotenv.2019.05.385] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 04/24/2019] [Accepted: 05/24/2019] [Indexed: 06/09/2023]
Abstract
Nowadays, micropollutants such as pharmaceuticals, pesticides and personal care products can be found ubiquitously in the anthropogenically influenced water cycle. As micropollutants have virtually no natural background concentrations they are significantly more sensitive in detecting processes and flow paths than classic inorganic tracers and indicators and at the same time they are often highly source specific. Therefore, using micropollutants as environmental indicators for anthropogenic activities is a common and frequently applied method today. As they interact in many ways with environmental matrices they can be used for source apportionment as well as to estimate flow paths and residence times in waterbodies. This review gives a systematic overview over the large variety of micropollutants used as indicators in the aquatic environment over the last decades together with the prerequisites on their use. Their application is subdivided into their qualitative (compound presence or absence) and quantitative (volume flows) use and shows the numerous possibilities from gaining basic information on the water regime up to advanced applications such as wastewater-based epidemiology.
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Affiliation(s)
- Wiebke Warner
- Department of Applied Geology, Geoscience Centre, University of Goettingen, Goldschmidtstr. 3, 37077 Goettingen, Germany.
| | - Tobias Licha
- Department of Applied Geology, Geoscience Centre, University of Goettingen, Goldschmidtstr. 3, 37077 Goettingen, Germany
| | - Karsten Nödler
- TZW: DVGW-Technologiezentrum Wasser, Karlsruher Straße 84, 76139 Karlsruhe
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33
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Glaser C, Schwientek M, Zarfl C. Designing field-based investigations of organic micropollutant fate in rivers. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:28633-28649. [PMID: 31385254 DOI: 10.1007/s11356-019-06058-1] [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: 02/01/2019] [Accepted: 07/22/2019] [Indexed: 06/10/2023]
Abstract
Organic micropollutants in rivers are emitted via diffuse and point sources like from agricultural practice or wastewater treatment plants (WWTP). Extensive laboratory and field experiments have been conducted to understand emissions and fate of these pollutants in freshwaters. Nevertheless, data is often difficult to compare since common protocols for appropriate approaches are largely missing. Thus, interpretation of the observed changes in substance concentrations and of the underlying fate of these compounds downstream of the chemical input into the river is still challenging. To narrow this research gap, (1) process understanding and (2) measurement approaches for field-based investigations are critically reviewed in this article. The review includes, on the one hand, processes that change the volume of the water (hydrological processes) and, on the other hand, processes that affect the substance mass within the water (distribution and transformation). Environmental boundary conditions for the purpose of better comparability of different attenuation studies, as well as promising state-of-the-art measurement approaches from different disciplines, are presented. This overview helps to develop a tailored procedure to assess turnover mechanisms of organic micropollutants under field conditions. In this respect, further research needs to standardize interdisciplinary approaches to increase the informative value of collected data.
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Affiliation(s)
- Clarissa Glaser
- Center for Applied Geoscience, Eberhard Karls University of Tübingen, Hölderlinstr. 12, 72074, Tübingen, Germany.
| | - Marc Schwientek
- Center for Applied Geoscience, Eberhard Karls University of Tübingen, Hölderlinstr. 12, 72074, Tübingen, Germany
| | - Christiane Zarfl
- Center for Applied Geoscience, Eberhard Karls University of Tübingen, Hölderlinstr. 12, 72074, Tübingen, Germany
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34
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Magliozzi C, Usseglio‐Polatera P, Meyer A, Grabowski RC. Functional traits of hyporheic and benthic invertebrates reveal importance of wood‐driven geomorphological processes in rivers. Funct Ecol 2019. [DOI: 10.1111/1365-2435.13381] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chiara Magliozzi
- Water Science Institute, School of Water, Energy and Environment Cranfield University Cranfield UK
| | - Philippe Usseglio‐Polatera
- Laboratoire Interdisciplinaire des Environnements Continentaux (LIEC, CNRS UMR 7360) Université de Lorraine Metz France
| | - Albin Meyer
- Laboratoire Interdisciplinaire des Environnements Continentaux (LIEC, CNRS UMR 7360) Université de Lorraine Metz France
| | - Robert C. Grabowski
- Water Science Institute, School of Water, Energy and Environment Cranfield University Cranfield UK
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35
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Danner MC, Robertson A, Behrends V, Reiss J. Antibiotic pollution in surface fresh waters: Occurrence and effects. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 664:793-804. [PMID: 30763859 DOI: 10.1016/j.scitotenv.2019.01.406] [Citation(s) in RCA: 413] [Impact Index Per Article: 82.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 01/25/2019] [Accepted: 01/30/2019] [Indexed: 05/25/2023]
Abstract
Worldwide, antibiotic usage exceeds 100,000 tons per year and there is increasing concern over the fate of these substances. Antibiotics are ubiquitous in the environment and significant concentrations have been detected in fresh waters. In this review, we highlight important aspects of antibiotic pollution in fresh waters: that concentrations of antibiotics in the environment are substantial, that micro-organisms are susceptible to this, that bacteria can evolve resistance in the environment, and that antibiotic pollution affects natural food webs while interacting with other stressors; which taken together poses a number of challenges for environmental scientists. In the literature, we found examples of considerable antibiotic pollution in fresh waters. In the Americas, antibiotic concentrations of up to 15 μg/L have been measured; with higher concentrations reported from European and African studies (over 10 μg/L and 50 μg/L respectively), and in Asian-pacific countries concentrations over 450 μg/L have been detected. While these concentrations might not be deemed harmful to humans, non-target freshwater organisms could be affected by them. Bioassays show that some of the antibiotics found in surface waters affect microbes at concentrations below 10 μg/L. Among the most potent antibiotics are those that prevail in streams and rivers in these concentrations, such as ciprofloxacin. Sub-lethal concentrations might not kill prokaryotes but contribute to increased bacterial resistance and change the composition of single-celled communities, as demonstrated in laboratory experiments. This has implications for the microbial food web (e.g. interactions among and between bacteria and their protozoan consumers) and by extension, larger organisms and ecosystem health. The fact that the effects of antibiotics are extremely context-dependent represents a challenge, particularly for in vitro research. We suggest future research avenues, taking into account food web experiments, antibiotics interacting with one another (and other stressors) and discuss how these can help to answer multi-layered research questions.
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Affiliation(s)
- Marie-Claire Danner
- Department of Life Sciences, Whitelands College, Roehampton University, London SW15 4JD, United Kingdom.
| | - Anne Robertson
- Department of Life Sciences, Whitelands College, Roehampton University, London SW15 4JD, United Kingdom
| | - Volker Behrends
- Department of Life Sciences, Whitelands College, Roehampton University, London SW15 4JD, United Kingdom
| | - Julia Reiss
- Department of Life Sciences, Whitelands College, Roehampton University, London SW15 4JD, United Kingdom
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Schaper JL, Posselt M, Bouchez C, Jaeger A, Nuetzmann G, Putschew A, Singer G, Lewandowski J. Fate of Trace Organic Compounds in the Hyporheic Zone: Influence of Retardation, the Benthic Biolayer, and Organic Carbon. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:4224-4234. [PMID: 30905154 DOI: 10.1021/acs.est.8b06231] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The fate of 28 trace organic compounds (TrOCs) was investigated in the hyporheic zone (HZ) of an urban lowland river in Berlin, Germany. Water samples were collected hourly over 17 h in the river and in three depths in the HZ using minipoint samplers. The four relatively variable time series were subsequently used to calculate first-order removal rates and retardation coefficients via a one-dimensional reactive transport model. Reversible sorption processes led to substantial retardation of many TrOCs along the investigated hyporheic flow path. Some TrOCs, such as dihydroxy-carbamazepine, O-desmethylvenlafaxine, and venlafaxine, were found to be stable in the HZ. Others were readily removed with half-lives in the first 10 cm of the HZ ranging from 0.1 ± 0.01 h for iopromide to 3.3 ± 0.3 h for tramadol. Removal rate constants of the majority of reactive TrOCs were highest in the first 10 cm of the HZ, where removal of biodegradable dissolved organic matter was also the highest. Because conditions were oxic along the top 30 cm of the investigated flow path, we attribute this finding to the high microbial activity typically associated with the shallow HZ. Frequent and short vertical hyporheic exchange flows could therefore be more important for reach-scale TrOC removal than long, lateral hyporheic flow paths.
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Affiliation(s)
- Jonas L Schaper
- Leibniz-Institute of Freshwater Ecology and Inland Fisheries , Department Ecohydrology , Müggelseedamm 310 , 12587 Berlin , Germany
- Chair of Water Quality Engineering , Technische Universität Berlin , Strasse des 17. Juni 135 , 10623 Berlin , Germany
| | - Malte Posselt
- Department of Environmental Science and Analytical Chemistry (ACES) , Stockholm University , 114 19 Stockholm , Sweden
| | - Camille Bouchez
- CNRS , Univ Rennes , Géosciences Rennes, UMR 6118 , 35000 Rennes , France
| | - Anna Jaeger
- Leibniz-Institute of Freshwater Ecology and Inland Fisheries , Department Ecohydrology , Müggelseedamm 310 , 12587 Berlin , Germany
- Geography Department , Humboldt University Berlin , Rudower Chaussee 16 , 12489 Berlin , Germany
| | - Gunnar Nuetzmann
- Leibniz-Institute of Freshwater Ecology and Inland Fisheries , Department Ecohydrology , Müggelseedamm 310 , 12587 Berlin , Germany
- Geography Department , Humboldt University Berlin , Rudower Chaussee 16 , 12489 Berlin , Germany
| | - Anke Putschew
- Chair of Water Quality Engineering , Technische Universität Berlin , Strasse des 17. Juni 135 , 10623 Berlin , Germany
| | - Gabriel Singer
- Leibniz-Institute of Freshwater Ecology and Inland Fisheries , Department Ecohydrology , Müggelseedamm 310 , 12587 Berlin , Germany
| | - Joerg Lewandowski
- Leibniz-Institute of Freshwater Ecology and Inland Fisheries , Department Ecohydrology , Müggelseedamm 310 , 12587 Berlin , Germany
- Geography Department , Humboldt University Berlin , Rudower Chaussee 16 , 12489 Berlin , Germany
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Jaeger A, Posselt M, Betterle A, Schaper J, Mechelke J, Coll C, Lewandowski J. Spatial and Temporal Variability in Attenuation of Polar Organic Micropollutants in an Urban Lowland Stream. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:2383-2395. [PMID: 30754970 DOI: 10.1021/acs.est.8b05488] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Contamination of rivers by trace organic compounds (TrOCs) poses a risk for aquatic ecosystems and drinking water quality. Spatially- and temporally varying environmental conditions are expected to play a major role in controlling in-stream attenuation of TrOCs. This variability is rarely captured by in situ studies of TrOC attenuation. Instead, snap-shots or time-weighted average conditions and corresponding attenuation rates are reported. The present work sought to investigate this variability and factors controlling it by analysis of 24 TrOCs over a 4.7 km reach of the River Erpe (Berlin, Germany). The factors investigated included sunlight and water temperature as well as the presence of macrophytes. Attenuation rate constants in 48 consecutive hourly water parcels were tracked along two contiguous river sections of different characteristics. Section 1 was less shaded and more densely covered with submerged macrophytes compared to section 2. The sampling campaign was repeated after macrophyte removal from section 1. The findings show, that section 1 generally provided more favorable conditions for both photo- and biodegradation. Macrophyte removal enhanced photolysis of some compounds (e.g., hydrochlorothiazide and diclofenac) while reducing the biodegradation of metoprolol. The transformation products metoprolol acid and valsartan acid were formed along the reach under all conditions.
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Affiliation(s)
- Anna Jaeger
- Leibniz-Institute of Freshwater Ecology and Inland Fisheries , Department Ecohydrology , Berlin , Germany
- Humboldt University Berlin , Geography Department , Berlin , Germany
| | - Malte Posselt
- Stockholm University , Department of Environmental Science and Analytical Chemistry , Stockholm , Sweden
| | - Andrea Betterle
- Eawag , Swiss Federal Institute of Aquatic Science and Technology, Department of Water Resources and Drinking Water , Dübendorf , Switzerland
- University of Neuchâtel , Centre of Hydrogeology and Geothermics , Neuchâtel , Switzerland
- University of Padova , Department of ICEA and International Center for Hydrology , Padua , Italy
| | - Jonas Schaper
- Leibniz-Institute of Freshwater Ecology and Inland Fisheries , Department Ecohydrology , Berlin , Germany
- Technical University of Berlin , Chair of Water Quality Engineering , Berlin , Germany
| | - Jonas Mechelke
- Eawag , Swiss Federal Institute of Aquatic Science and Technology, Department of Water Resources and Drinking Water , Dübendorf , Switzerland
- ETH Zürich , Institute of Biogeochemistry and Pollutant Dynamics , Zürich , Switzerland
| | - Claudia Coll
- Stockholm University , Department of Environmental Science and Analytical Chemistry , Stockholm , Sweden
| | - Joerg Lewandowski
- Leibniz-Institute of Freshwater Ecology and Inland Fisheries , Department Ecohydrology , Berlin , Germany
- Humboldt University Berlin , Geography Department , Berlin , Germany
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Peter KT, Herzog S, Tian Z, Wu C, McCray JE, Lynch K, Kolodziej EP. Evaluating emerging organic contaminant removal in an engineered hyporheic zone using high resolution mass spectrometry. WATER RESEARCH 2019; 150:140-152. [PMID: 30508711 DOI: 10.1016/j.watres.2018.11.050] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 11/16/2018] [Accepted: 11/17/2018] [Indexed: 06/09/2023]
Abstract
The hyporheic zone (HZ), located at the interface of surface and groundwater, is a natural bioreactor for attenuation of chemical contaminants. Engineered HZs can be incorporated into stream restoration projects to enhance hyporheic exchange, with flowpaths optimized to promote biological habitat, water quantity, and water quality improvements. Designing HZs for in-stream treatment of stormwater, a significant source of flow and contaminant loads to urban creeks, requires assessment of both the hydrology and biogeochemical capacity for water quality improvement. Here, we applied tracer tests and high resolution mass spectrometry (HRMS) to characterize an engineered hyporheic zone unit process, called a hyporheic design element (HDE), in the Thornton Creek Watershed in Seattle, WA. Dye, NaCl, and bromide were used to hydrologically link downwelling and upwelling zones and estimate the hydraulic retention time (HRT) of hyporheic flowpaths. We then compared water quality improvements across hydrologically-linked surface and hyporheic flowpaths (3-5 m length; ∼30 min to >3 h) during baseflow and stormflow conditions. We evaluated fate outcomes for 83 identified contaminants during stormflow, including those correlated with an urban runoff mortality syndrome in coho salmon. Non-target HRMS analysis was used to assess holistic water quality improvements and evaluate attenuation mechanisms. The data indicated substantial water quality improvement in hyporheic flowpaths relative to surface flow and improved contaminant removal with longer hyporheic HRT (for ∼1900 non-target compounds detected during stormflow, <17% were attenuated >50% via surface flow vs. 59% and 78% via short and long hyporheic residence times, respectively), and strong contributions of hydrophobic sorption towards observed contaminant attenuation.
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Affiliation(s)
- Katherine T Peter
- Interdisciplinary Arts and Science, University of Washington Tacoma, Tacoma, WA, 98421, USA; Center for Urban Waters, Tacoma, WA, 98421, USA.
| | - Skuyler Herzog
- Department of Civil and Environmental Engineering, Colorado School of Mines, Golden, CO, 80401, USA
| | - Zhenyu Tian
- Interdisciplinary Arts and Science, University of Washington Tacoma, Tacoma, WA, 98421, USA; Center for Urban Waters, Tacoma, WA, 98421, USA
| | - Christopher Wu
- Interdisciplinary Arts and Science, University of Washington Tacoma, Tacoma, WA, 98421, USA; Center for Urban Waters, Tacoma, WA, 98421, USA
| | - John E McCray
- Department of Civil and Environmental Engineering, Colorado School of Mines, Golden, CO, 80401, USA
| | | | - Edward P Kolodziej
- Interdisciplinary Arts and Science, University of Washington Tacoma, Tacoma, WA, 98421, USA; Center for Urban Waters, Tacoma, WA, 98421, USA; Department of Civil and Environmental Engineering, University of Washington, Seattle, WA, 98195, USA
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Posselt M, Jaeger A, Schaper JL, Radke M, Benskin JP. Determination of polar organic micropollutants in surface and pore water by high-resolution sampling-direct injection-ultra high performance liquid chromatography-tandem mass spectrometry. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2018; 20:1716-1727. [PMID: 30350841 DOI: 10.1039/c8em00390d] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Hyporheic zones (HZs) are dynamic and complex transition regions between rivers and aquifers which are thought to play an important role in the attenuation of environmental micropollutants. Non-steady state and small-scale hyporheic processes which affect micropollutants in the HZ are poorly characterized due to limitations in existing analytical methodologies. In this work we developed a method for high spatio-temporal resolution analysis of polar organic micropollutants (POMs) in hyporheic pore- and surface waters by combining (semi-) automatic low volume sampling techniques with direct-injection ultra-high performance liquid chromatography tandem mass spectrometry. The method is capable of quantifying 25 parent compounds and 18 transformation products (TPs) using only 0.4 mL of water and few preparation steps. Application of the method to both surface and pore water revealed significant (i.e. > an order of magnitude) differences in POM concentrations over small time and spatial scales (i.e. < a few hours and tens of cm, respectively). Guanylurea, a TP of the antidiabetic drug metformin was detected at unprecedentedly high concentrations. Collectively, this method is suitable for in situ characterization of POMs at high spatial and temporal resolution and with minimal disturbance of natural flow paths and infiltration of surface water.
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Affiliation(s)
- Malte Posselt
- Department of Environmental Science and Analytical Chemistry (ACES), Stockholm University, Stockholm, Sweden.
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Hollender J, Rothardt J, Radny D, Loos M, Epting J, Huggenberger P, Borer P, Singer H. Comprehensive micropollutant screening using LC-HRMS/MS at three riverbank filtration sites to assess natural attenuation and potential implications for human health. WATER RESEARCH X 2018; 1:100007. [PMID: 31194029 PMCID: PMC6549901 DOI: 10.1016/j.wroa.2018.100007] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 09/06/2018] [Accepted: 10/25/2018] [Indexed: 05/22/2023]
Abstract
Riverbank filtration (RBF) is used worldwide to produce high quality drinking water. With river water often contaminated by micropollutants (MPs) from various sources, this study addresses the occurrence and fate of such MPs at three different RBF sites with oxic alluvial sediments and short travel times to the drinking water well down to hours. A broad range of MPs with various physico-chemical properties were analysed with detection limits in the low ng L-1 range using solid phase extraction followed by liquid chromatography coupled to tandem high resolution mass spectrometry. Out of the 526 MPs targeted, a total of 123 different MPs were detected above the limit of quantification at the three different RBF sites. Of the 75-96 MPs detected in each river, 43-59% were attenuated during RBF. The remaining total concentrations of the MPs in the raw drinking water accounted to 0.6-1.6 μgL-1 with only a few compounds exceeding 0.1 μgL-1, an often used threshold value. The attenuation was most pronounced in the first meters of infiltration with a full elimination of 17 compounds at all three sites. However, a mixing with groundwater related to regional groundwater flow complicated the characterisation of natural attenuation potentials along the transects. Additional non-target screening at one site revealed similar trends for further non-target components. Overall, a risk assessment of the target and estimated non-target compound concentrations finally indicated during the sampling period no health risk of the drinking water according to current guidelines. Our results demonstrate that monitoring of contamination sources within a catchment and the affected water quality remains important in such vulnerable systems with partially short residence times.
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Affiliation(s)
- Juliane Hollender
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Ueberlandstrasse 133, 8600 Duebendorf, Switzerland
- Institute of Biogeochemistry and Pollutant Dynamics, Universitätstrasse 16, ETH Zürich, 8092 Zurich, Switzerland
| | - Judith Rothardt
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Ueberlandstrasse 133, 8600 Duebendorf, Switzerland
| | - Dirk Radny
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Ueberlandstrasse 133, 8600 Duebendorf, Switzerland
| | - Martin Loos
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Ueberlandstrasse 133, 8600 Duebendorf, Switzerland
| | - Jannis Epting
- Applied and Environmental Geology, University of Basel, Bernoullistrasse 32, 4056 Basel, Switzerland
| | - Peter Huggenberger
- Applied and Environmental Geology, University of Basel, Bernoullistrasse 32, 4056 Basel, Switzerland
| | - Paul Borer
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Ueberlandstrasse 133, 8600 Duebendorf, Switzerland
| | - Heinz Singer
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Ueberlandstrasse 133, 8600 Duebendorf, Switzerland
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Schaper JL, Posselt M, McCallum JL, Banks EW, Hoehne A, Meinikmann K, Shanafield MA, Batelaan O, Lewandowski J. Hyporheic Exchange Controls Fate of Trace Organic Compounds in an Urban Stream. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:12285-12294. [PMID: 30293423 DOI: 10.1021/acs.est.8b03117] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
First-order half-lives for 26 trace organic compounds (TrOCs) were determined in the hyporheic zone (HZ) and along a 3 km reach of a first-order stream in South Australia during both dry and wet seasons. Two salt tracer experiments were conducted and evaluated using a transient storage model to characterize seasonal differences in stream residence time and transient storage. Lagrangian and time-integrated surface water sampling were conducted to calculate half-lives in the surface water. Half-lives in the HZ were calculated using porewater samples obtained from a modified mini-point sampler and hyporheic residence times measured via active heat-pulse sensing. Half of the investigated TrOCs (e.g., oxazepam, olmesartan, candesartan) were not significantly removed along both the investigated river stretch and the sampled hyporheic flow paths. The remaining TrOCs (e.g., metformin, guanylurea, valsartan) were found to be significantly removed in the HZ and along the river stretch with relative removals in the HZ correlating to reach-scale relative removals. Using the modeled transport parameters, it was estimated that wet season reach-scale removal of TrOCs was predominately caused by removal in the HZ when the intensity of hyporheic exchange was also higher. Factors that increase HZ exchange are thus likely to promote in-stream reactivity of TrOCs.
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Affiliation(s)
- Jonas L Schaper
- Leibniz-Institute of Freshwater Ecology and Inland Fisheries , Department Ecohydrology , Müggelseedamm 310 , 12587 Berlin , Germany
- Technical University of Berlin , Chair of Water Quality Engineering , Strasse des 17. Juni 135 , 10623 Berlin , Germany
| | - Malte Posselt
- Department of Environmental Science and Analytical Chemistry (ACES) , Stockholm University , Stockholm 114 18 , Sweden
| | - James L McCallum
- National Centre for Groundwater Research and Training, College of Science and Engineering , Flinders University , GPO Box 2100, Adelaide 5001 , South Australia , Australia
| | - Eddie W Banks
- National Centre for Groundwater Research and Training, College of Science and Engineering , Flinders University , GPO Box 2100, Adelaide 5001 , South Australia , Australia
| | - Anja Hoehne
- Technical University of Berlin , Chair of Water Quality Engineering , Strasse des 17. Juni 135 , 10623 Berlin , Germany
| | - Karin Meinikmann
- Leibniz-Institute of Freshwater Ecology and Inland Fisheries , Department Ecohydrology , Müggelseedamm 310 , 12587 Berlin , Germany
| | - Margaret A Shanafield
- National Centre for Groundwater Research and Training, College of Science and Engineering , Flinders University , GPO Box 2100, Adelaide 5001 , South Australia , Australia
| | - Okke Batelaan
- National Centre for Groundwater Research and Training, College of Science and Engineering , Flinders University , GPO Box 2100, Adelaide 5001 , South Australia , Australia
| | - Joerg Lewandowski
- Leibniz-Institute of Freshwater Ecology and Inland Fisheries , Department Ecohydrology , Müggelseedamm 310 , 12587 Berlin , Germany
- Humboldt University Berlin , Geography Department , Rudower Chaussee 16 , 12489 Berlin , Germany
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Herzog SP, Higgins CP, Singha K, McCray JE. Performance of Engineered Streambeds for Inducing Hyporheic Transient Storage and Attenuation of Resazurin. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:10627-10636. [PMID: 30095905 DOI: 10.1021/acs.est.8b01145] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Several U.S. programs provide financial incentives for stream restoration to improve degraded water quality. These efforts prioritize hyporheic zone (HZ) restoration to enhance contaminant attenuation, but no stream restoration or stormwater best management practice (BMP) explicitly tailors hyporheic residence times to target specific contaminants of concern. Here we present the first physical demonstration of a new BMP called Biohydrochemical Enhancements for Streamwater Treatment (BEST). BEST are subsurface modules that use hydraulic conductivity modifications to drive hyporheic exchange and control residence times, combined with reactive geomedia to increase HZ reaction rates. Experiments were conducted in 15-m long outdoor flumes: one all-sand control, the other with BEST modules. Sodium chloride (conservative tracer) and resazurin (surrogate for a reactive pollutant) injections were conducted, with observations analyzed by stream transient storage models. Results demonstrated that BEST increased the effective HZ size and resazurin transformation both by ∼50% compared to the control. Numerical simulations of extended reach lengths showed that BEST could achieve 1-log removal of resazurin in 111 m, versus 172 m in the control, and 414 m and 683 m in two numerically simulated urban streams. These results emphasize the potential of BEST as a novel HZ BMP to improve streamwater quality.
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Affiliation(s)
- Skuyler P Herzog
- Department of Civil and Environmental Engineering and Hydrologic Science and Engineering Program , Colorado School of Mines , Golden , Colorado 80401 , United States
- Engineering Research Center (ERC) for Re-inventing the Nation's Urban Water Infrastructure (ReNUWIt) , United States
| | - Christopher P Higgins
- Department of Civil and Environmental Engineering and Hydrologic Science and Engineering Program , Colorado School of Mines , Golden , Colorado 80401 , United States
- Engineering Research Center (ERC) for Re-inventing the Nation's Urban Water Infrastructure (ReNUWIt) , United States
| | - Kamini Singha
- Department of Civil and Environmental Engineering and Hydrologic Science and Engineering Program , Colorado School of Mines , Golden , Colorado 80401 , United States
- Department of Geology and Geological Engineering and Hydrologic Science and Engineering Program , Colorado School of Mines , Golden , Colorado 80401 , United States
| | - John E McCray
- Department of Civil and Environmental Engineering and Hydrologic Science and Engineering Program , Colorado School of Mines , Golden , Colorado 80401 , United States
- Engineering Research Center (ERC) for Re-inventing the Nation's Urban Water Infrastructure (ReNUWIt) , United States
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Schaper JL, Seher W, Nützmann G, Putschew A, Jekel M, Lewandowski J. The fate of polar trace organic compounds in the hyporheic zone. WATER RESEARCH 2018; 140:158-166. [PMID: 29705619 DOI: 10.1016/j.watres.2018.04.040] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 04/14/2018] [Accepted: 04/17/2018] [Indexed: 05/22/2023]
Abstract
The hyporheic zone (HZ) is often considered to efficiently remove polar trace organic compounds (TrOCs) from lotic systems, mitigating potential adverse effects of TrOCs on ecosystem functioning and drinking water production. Predicting the fate of TrOCs in the hyporheic zone (HZ) is difficult as the in-situ removal rate constants are not known and the biogeochemical factors as well as hydrological conditions controlling the removal efficiency are not fully understood. To determine the in-situ removal efficiency of the HZ for a variety of TrOCs as a function of the biogeochemical milieu, we conducted a field study in an urban river near Berlin, Germany. Subsurface flow was studied by time series of temperature depth profiles and the biogeochemical milieu of the HZ by concentration depth profiles. These results, in conjunction with a 1D advection-dispersion transport model, were used to calculate first-order removal rate constants of several polar TrOCs in the HZ. For the majority of TrOCs investigated, removal rate constants were strongly dependent on redox conditions, with significantly higher removal rates observed under predominantly suboxic (i.e. denitrifying) compared to anoxic (i.e. Fe and Mn reducing) conditions. Compared to previous studies on the fate of TrOCs in saturated sediments, half-lives within oxic/suboxic sections of the HZ were relatively low, attributable to the site-specific characteristics of the HZ in a stream dominated by wastewater treatment plant effluent. For nine out of thirteen investigated TrOCs, concentrations decreased significantly in the HZ with relative removal percentages ranging from 32% for primidone to 77% for gabapentin. For many TrOCs, removal efficiency decreased drastically as redox conditions became anoxic. For the majority of compounds investigated here, the HZ indeed acts as an efficient bioreactor that is capable of removing TrOCs along relatively short flow paths. Depending on the TrOC, removal capacity may be enhanced by either increasing the magnitude of groundwater-surface exchange fluxes, by increasing the total residence time in the HZ or the exposure time to suboxic zones, respectively.
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Affiliation(s)
- Jonas L Schaper
- Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Department Ecohydrology, Müggelseedamm 310, 12587 Berlin, Germany; Technical University of Berlin, Chair of Water Quality Engineering, Strasse des 17. Juni 135, 10623 Berlin, Germany.
| | - Wiebke Seher
- Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Department Ecohydrology, Müggelseedamm 310, 12587 Berlin, Germany
| | - Gunnar Nützmann
- Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Department Ecohydrology, Müggelseedamm 310, 12587 Berlin, Germany; Humboldt University Berlin, Geography Department, Rudower Chaussee 16, 12489 Berlin, Germany
| | - Anke Putschew
- Technical University of Berlin, Chair of Water Quality Engineering, Strasse des 17. Juni 135, 10623 Berlin, Germany
| | - Martin Jekel
- Technical University of Berlin, Chair of Water Quality Engineering, Strasse des 17. Juni 135, 10623 Berlin, Germany
| | - Jörg Lewandowski
- Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Department Ecohydrology, Müggelseedamm 310, 12587 Berlin, Germany; Humboldt University Berlin, Geography Department, Rudower Chaussee 16, 12489 Berlin, Germany
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Dunscombe M, Robertson A, Peralta-Maraver I, Shaw P. Community structure and functioning below the streambed across contrasting geologies. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 630:1028-1035. [PMID: 29554724 DOI: 10.1016/j.scitotenv.2018.02.274] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 02/23/2018] [Accepted: 02/23/2018] [Indexed: 06/08/2023]
Abstract
There is little understanding of the variability in the structure and function of metazoan hyporheic communities across streams draining geologies that weather to produce different pore sizes and, by extension, different hydrological conditions. In this study we selected two catchments in each of three geologies that had differing values of hydraulic conductivity and porosity, and sampled four riffles in each catchment at high and low water levels and at two depths. We found clear differences in the physical template of streams draining different geologies and in the composition and abundance of communities inhabiting the hyporheic zones of streams draining chalk/sandstone and limestone geologies. However, we did not detect any significant differences in body size, biomass or functional measures (diversity, richness, redundancy) between the geologies. Our findings imply that ecosystem functioning in streams draining geologies that produce fine grain sediments may be similar to those draining geologies that produce coarse grained sediments irrespective of differences in the physical template and community structure.
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Affiliation(s)
- Mark Dunscombe
- Department of Life Sciences, Roehampton University, Holybourne Avenue, London SW15 4JD, UK; APEM Ltd, A17 Embankment Business Park, Heaton Mersey, Stockport, Cheshire SK4 3GN, UK
| | - Anne Robertson
- Department of Life Sciences, Roehampton University, Holybourne Avenue, London SW15 4JD, UK.
| | | | - Peter Shaw
- Department of Life Sciences, Roehampton University, Holybourne Avenue, London SW15 4JD, UK
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Koumaki E, Mamais D, Noutsopoulos C. Assessment of the environmental fate of endocrine disrupting chemicals in rivers. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 628-629:947-958. [PMID: 30045583 DOI: 10.1016/j.scitotenv.2018.02.110] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 02/09/2018] [Accepted: 02/09/2018] [Indexed: 06/08/2023]
Abstract
Laboratory tests were conducted with five endocrine disruptors (bishenol A, triclosan. nonylphenol, nonylphenol monoethoxylate and nonylphenol diethoxylate) under different redox conditions (aerobic, anoxic, anaerobic and sulfate-reducing conditions) to assess abiotic and biotic degradation in a river water/sediment system. The river water sample was collected from Spercheios River while the sediment was collected from the banks of a tributary of the river at the point where the discharge point of a wastewater treatment plant is located. To describe quantitatively elimination kinetics of the target compounds, pseudo first-order kinetics were adopted. According to the results from the microcosms studies, it can be stated that the substances are eliminated from the aqueous phase with relatively high rates under aerobic conditions due to both sorption and biotransformation processes. However, when reduced oxygen conditions were established in the microcosms incubations, biotransformation decreased, indicating the almost complete cease of the EDCs microbial degradation, while substances' sorption onto sediments showed no significant differences. All compounds were found to be biodegradable under aerobic conditions, and the low to high order of the calculated dissipation rate constants was 0.064±0.004d-1 (TCS)→0.067±0.006d-1 (NP)→0.076±0.009d-1 (NP2EO)→0.081±0.007d-1 (NP1EO)→0.103±0.011d-1 (BPA). Finally, regarding the biotransformation experiments, the elimination of the compounds limited in the absence of oxygen as compared to aerobic.
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Affiliation(s)
- Elena Koumaki
- Sanitary Engineering Laboratory, Department of Water Resources and Environmental Engineering, School of Civil Engineering, National Technical University of Athens, 5 Iroon Polytechniou, Zografou, 15780, Athens, Greece.
| | - Daniel Mamais
- Sanitary Engineering Laboratory, Department of Water Resources and Environmental Engineering, School of Civil Engineering, National Technical University of Athens, 5 Iroon Polytechniou, Zografou, 15780, Athens, Greece
| | - Constantinos Noutsopoulos
- Sanitary Engineering Laboratory, Department of Water Resources and Environmental Engineering, School of Civil Engineering, National Technical University of Athens, 5 Iroon Polytechniou, Zografou, 15780, Athens, Greece
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Peralta-Maraver I, Reiss J, Robertson AL. Interplay of hydrology, community ecology and pollutant attenuation in the hyporheic zone. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 610-611:267-275. [PMID: 28803202 DOI: 10.1016/j.scitotenv.2017.08.036] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 07/31/2017] [Accepted: 08/03/2017] [Indexed: 06/07/2023]
Affiliation(s)
| | - Julia Reiss
- Department of Life Sciences, Roehampton University, London, UK
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Jiménez JJ, Sánchez MI, Pardo R, Muñoz BE. Degradation of indomethacin in river water under stress and non-stress laboratory conditions: degradation products, long-term evolution and adsorption to sediment. J Environ Sci (China) 2017; 51:13-20. [PMID: 28115123 DOI: 10.1016/j.jes.2016.08.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Revised: 08/25/2016] [Accepted: 09/01/2016] [Indexed: 06/06/2023]
Abstract
The pharmaceutical compound indomethacin is not totally removed in wastewater treatment plants, whose effluents flow into aquatic environments; concentrations in the 0.1-100ng/L range are commonly found in surface waters, and its fate is unknown. Here, biological, photochemical and thermal degradation assays were conducted under stress and non-stress conditions to estimate its degradation rate in river water and establish its degradation products over time. The results revealed that direct sunlight irradiation promoted the complete degradation of indomethacin (2μg/L) in less than 6hr, but indomethacin was detected over a period of 4months when water was kept under the natural day-night cycle and the exposure to sunlight was partially limited, as occurs inside a body of water. The biological degradation in water was negligible, while the hydrolysis at pH7.8 was slow. Residues were monitored by ultra-pressure liquid chromatography/quadrupole time-of-flight/mass spectrometry after solid-phase extraction, and six degradation products were found; their structures were proposed based on the molecular formulae and fragmentation observed in high-resolution tandem mass spectra. 4-Chlorobenzoic and 2-acetamido-5-methoxybenzoic acids were the long-term transformation products, persisting for at least 30weeks in water kept under non-stress conditions. Furthermore, the degradation in the presence of sediment was also monitored over time, with some differences being noted. The adsorption coefficients of indomethacin and degradation products on river sediment were calculated; long-term degradation products did not have significant adsorption to sediment.
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Affiliation(s)
- Juan J Jiménez
- Department of Analytical Chemistry, Faculty of Sciences, Campus Miguel Delibes, University of Valladolid, Paseo de Belén 7, 47011 Valladolid, Spain; I.U. CINQUIMA, Campus Miguel Delibes, University of Valladolid, Paseo de Belén 5, 47011 Valladolid, Spain.
| | - María I Sánchez
- Department of Analytical Chemistry, School of Industrial Engineers, University of Valladolid, Francisco Mendizábal 1, 47014 Valladolid, Spain
| | - Rafael Pardo
- Department of Analytical Chemistry, Faculty of Sciences, Campus Miguel Delibes, University of Valladolid, Paseo de Belén 7, 47011 Valladolid, Spain
| | - Beatriz E Muñoz
- Department of Analytical Chemistry, School of Industrial Engineers, University of Valladolid, Francisco Mendizábal 1, 47014 Valladolid, Spain
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Brünjes R, Bichler A, Hoehn P, Lange FT, Brauch HJ, Hofmann T. Anthropogenic gadolinium as a transient tracer for investigating river bank filtration. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 571:1432-40. [PMID: 27450958 DOI: 10.1016/j.scitotenv.2016.06.105] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 05/31/2016] [Accepted: 06/14/2016] [Indexed: 05/22/2023]
Affiliation(s)
- Robert Brünjes
- University of Vienna, Department of Environmental Geosciences and Environmental Science Research Network, Althanstrasse 14, UZA2, 1090 Vienna, Austria
| | - Andrea Bichler
- University of Vienna, Department of Environmental Geosciences and Environmental Science Research Network, Althanstrasse 14, UZA2, 1090 Vienna, Austria
| | - Philipp Hoehn
- University of Vienna, Department of Environmental Geosciences and Environmental Science Research Network, Althanstrasse 14, UZA2, 1090 Vienna, Austria
| | - Frank Thomas Lange
- DVGW-Technologiezentrum Wasser (TZW), The German Water Centre, Karlsruher Str. 84, 76139 Karlsruhe, Germany
| | - Heinz-Juergen Brauch
- DVGW-Technologiezentrum Wasser (TZW), The German Water Centre, Karlsruher Str. 84, 76139 Karlsruhe, Germany
| | - Thilo Hofmann
- University of Vienna, Department of Environmental Geosciences and Environmental Science Research Network, Althanstrasse 14, UZA2, 1090 Vienna, Austria.
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Bradley PM, Barber LB, Clark JM, Duris JW, Foreman WT, Furlong ET, Givens CE, Hubbard LE, Hutchinson KJ, Journey CA, Keefe SH, Kolpin DW. Pre/post-closure assessment of groundwater pharmaceutical fate in a wastewater-facility-impacted stream reach. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 568:916-925. [PMID: 27350092 DOI: 10.1016/j.scitotenv.2016.06.104] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 06/07/2016] [Accepted: 06/14/2016] [Indexed: 05/22/2023]
Abstract
Pharmaceutical contamination of contiguous groundwater is a substantial concern in wastewater-impacted streams, due to ubiquity in effluent, high aqueous mobility, designed bioactivity, and to effluent-driven hydraulic gradients. Wastewater treatment facility (WWTF) closures are rare environmental remediation events; offering unique insights into contaminant persistence, long-term wastewater impacts, and ecosystem recovery processes. The USGS conducted a combined pre/post-closure groundwater assessment adjacent to an effluent-impacted reach of Fourmile Creek, Ankeny, Iowa, USA. Higher surface-water concentrations, consistent surface-water to groundwater concentration gradients, and sustained groundwater detections tens of meters from the stream bank demonstrated the importance of WWTF effluent as the source of groundwater pharmaceuticals as well as the persistence of these contaminants under effluent-driven, pre-closure conditions. The number of analytes (110 total) detected in surface water decreased from 69 prior to closure down to 8 in the first post-closure sampling event approximately 30 d later, with a corresponding 2 order of magnitude decrease in the cumulative concentration of detected analytes. Post-closure cumulative concentrations of detected analytes were approximately 5 times higher in proximal groundwater than in surface water. About 40% of the 21 contaminants detected in a downstream groundwater transect immediately before WWTF closure exhibited rapid attenuation with estimated half-lives on the order of a few days; however, a comparable number exhibited no consistent attenuation during the year-long post-closure assessment. The results demonstrate the potential for effluent-impacted shallow groundwater systems to accumulate pharmaceutical contaminants and serve as long-term residual sources, further increasing the risk of adverse ecological effects in groundwater and the near-stream ecosystem.
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Manamsa K, Lapworth DJ, Stuart ME. Temporal variability of micro-organic contaminants in lowland chalk catchments: New insights into contaminant sources and hydrological processes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 568:566-577. [PMID: 26850859 DOI: 10.1016/j.scitotenv.2016.01.146] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Revised: 01/22/2016] [Accepted: 01/22/2016] [Indexed: 06/05/2023]
Abstract
This paper explores the temporal variation of a broad suite of micro organic (MO) compounds within hydrologically linked compartments of a lowland Chalk catchment, the most important drinking water aquifer in the UK. It presents an assessment of results from relatively high frequency monitoring at a well-characterised site, including the type and concentrations of compounds detected and how they change under different hydrological conditions including exceptionally high groundwater levels and river flow conditions during 2014 and subsequent recovery. This study shows for the first time that within the Chalk groundwater there can be a greater diversity of the MOs compared to surface waters. Within the Chalk 26 different compounds were detected over the duration of the study compared to 17 in the surface water. Plasticisers (0.06-39μg/L) were found to dominate in the Chalk groundwater on 5 visits (38.4%) accounting for 14.5% of detections but contributing highest concentrations whilst other compounds dominated in the surface water. Trichloroethene and atrazine were among the most frequently detected compounds. The limit for the total pesticide concentration detected did not exceed EU/UK prescribed concentration values for drinking water. Emerging organic compounds such as caffeine, which currently do not have water quality limits, were also detected. The low numbers of compounds found within the hyporheic zone highlight the role of this transient interface in the attenuation and breakdown of the MOs, and provision of an important ecosystem service.
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Affiliation(s)
- K Manamsa
- British Geological Survey, Maclean Building, Wallingford, Oxfordshire OX10 8BB, UK
| | - D J Lapworth
- British Geological Survey, Maclean Building, Wallingford, Oxfordshire OX10 8BB, UK.
| | - M E Stuart
- British Geological Survey, Maclean Building, Wallingford, Oxfordshire OX10 8BB, UK
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