1
|
Branco RHR, Meulepas RJW, Sekar P, van Veelen HPJ, Rijnaarts HHM, Sutton NB. Biostimulation with oxygen and electron donors supports micropollutant biodegradation in an experimentally simulated nitrate-reducing aquifer. Sci Total Environ 2024; 928:172339. [PMID: 38608893 DOI: 10.1016/j.scitotenv.2024.172339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 03/16/2024] [Accepted: 04/07/2024] [Indexed: 04/14/2024]
Abstract
The availability of suitable electron donors and acceptors limits micropollutant natural attenuation in oligotrophic groundwater. This study investigated how electron donors with different biodegradability (humics, dextran, acetate, and ammonium), and different oxygen concentrations affect the biodegradation of 15 micropollutants (initial concentration of each micropollutant = 50 μg/L) in simulated nitrate reducing aquifers. Tests mimicking nitrate reducing field conditions showed no micropollutant biodegradation, even with electron donor amendment. However, 2,4-dichlorophenoxyacetic acid and mecoprop were biodegraded under (micro)aerobic conditions with and without electron donor addition. The highest 2,4-dichlorophenoxyacetic acid and mecoprop biodegradation rates and removal efficiencies were obtained under fully aerobic conditions with amendment of an easily biodegradable electron donor. Under microaerobic conditions, however, amendment with easily biodegradable dissolved organic carbon (DOC) inhibited micropollutant biodegradation due to competition between micropollutants and DOC for the limited oxygen available. Microbial community composition was dictated by electron acceptor availability and electron donor amendment, not by micropollutant biodegradation. Low microbial community richness and diversity led to the absence of biodegradation of the other 13 micropollutants (such as bentazon, chloridazon, and carbamazepine). Finally, adaptation and potential growth of biofilms interactively determined the location of the micropollutant removal zone relative to the point of amendment. This study provides new insight on how to stimulate in situ micropollutant biodegradation to remediate oligotrophic groundwaters as well as possible limitations of this process.
Collapse
Affiliation(s)
- Rita H R Branco
- Environmental Technology, Wageningen University & Research, P.O. Box 47, 6700 AA Wageningen, the Netherlands; Wetsus, European Centre of Excellence for Sustainable Water Technology, P.O. Box 1113, 8900 CC Leeuwarden, the Netherlands
| | - Roel J W Meulepas
- Wetsus, European Centre of Excellence for Sustainable Water Technology, P.O. Box 1113, 8900 CC Leeuwarden, the Netherlands
| | - Priyadharshini Sekar
- Environmental Technology, Wageningen University & Research, P.O. Box 47, 6700 AA Wageningen, the Netherlands; Wetsus, European Centre of Excellence for Sustainable Water Technology, P.O. Box 1113, 8900 CC Leeuwarden, the Netherlands
| | - H Pieter J van Veelen
- Wetsus, European Centre of Excellence for Sustainable Water Technology, P.O. Box 1113, 8900 CC Leeuwarden, the Netherlands
| | - Huub H M Rijnaarts
- Environmental Technology, Wageningen University & Research, P.O. Box 47, 6700 AA Wageningen, the Netherlands
| | - Nora B Sutton
- Environmental Technology, Wageningen University & Research, P.O. Box 47, 6700 AA Wageningen, the Netherlands.
| |
Collapse
|
2
|
Amorosi A, Sammartino I. Predicting natural arsenic enrichment in peat-bearing, alluvial and coastal depositional systems: A generalized model based on sequence stratigraphy. Sci Total Environ 2024; 924:171571. [PMID: 38492587 DOI: 10.1016/j.scitotenv.2024.171571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 02/23/2024] [Accepted: 03/06/2024] [Indexed: 03/18/2024]
Abstract
Hazardously high concentrations of arsenic exceeding the threshold limits for soils and drinking waters have been widely reported from Quaternary sedimentary successions and shallow aquifers of alluvial and coastal lowlands worldwide, raising public health concerns due to potential human exposure to arsenic. A combined sedimentological and geochemical analysis of subsurface deposits, 2.5-50 m deep, from the SE Po Plain (Italy) documents a systematic tendency for naturally-occurring arsenic to accumulate in peat-rich layers, with concentrations invariably greater than maximum permissible levels. A total of 366 bulk sediment samples from 40 cores that penetrated peat-bearing deposits were analysed by X-ray fluorescence. Arsenic concentrations associated with 7 peat-free lithofacies associations (fluvial-channel, levee/crevasse, floodplain, swamp, lagoon/bay, beach-barrier, and offshore/prodelta) exhibit background values invariably below threshold levels (<20 mg/kg). In contrast, total arsenic contents from peaty clay and peat showed 2-6 times larger As accumulation. A total of 204 near-surface (0-2.5 m) samples from modern alluvial and coastal depositional environments exhibit the same trends as their deeper counterparts, total arsenic peaking at peat horizons above the threshold values for contaminated soils. The arsenic-bearing, peat-rich Quaternary successions of the Po Plain accumulated under persisting reducing conditions in wetlands of backstepping estuarine and prograding deltaic depositional environments during the Early-Middle Holocene sea-level rise and subsequent stillstand. Contamination of the Holocene and underlying Pleistocene aquifer systems likely occurred through the release of As by microbially-mediated reductive dissolution. Using high-resolution sequence-stratigraphic concepts, we document that the Late Pleistocene-Holocene lithofacies architecture dictates the subsurface distribution of As. The "wetland trajectory", i.e. the path taken by the landward/seaward shift of peat-rich depositional environments during the Holocene, may help predict spatial patterns of natural As distribution, delineating the highest As-hazard zones and providing a realistic view of aquifer contamination even in unknown areas.
Collapse
Affiliation(s)
- Alessandro Amorosi
- Department of Biological, Geological and Environmental Sciences (BiGeA), University of Bologna, Via Zamboni 67, 40126 Bologna, Italy.
| | - Irene Sammartino
- National Research Council (CNR), Institute of Marine Science (ISMAR), Via Gobetti 101, 40129 Bologna, Italy.
| |
Collapse
|
3
|
Cong-Thi D, Dieu LP, Caterina D, De Pauw X, Thi HD, Ho HH, Nguyen F, Hermans T. Quantifying salinity in heterogeneous coastal aquifers through ERT and IP: Insights from laboratory and field investigations. J Contam Hydrol 2024; 262:104322. [PMID: 38394709 DOI: 10.1016/j.jconhyd.2024.104322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 12/18/2023] [Accepted: 01/11/2024] [Indexed: 02/25/2024]
Abstract
The lithological and stratigraphical heterogeneity of coastal aquifers has a great influence on saltwater intrusion (SI). This makes it difficult to predict SI pathways and their persistence in time. In this context, electrical resistivity tomography (ERT) and induced polarization (IP) methods are receiving increasing attention regarding the discrimination between saltwater-bearing and clayey sediments. To simplify the interpretation of ERT data, it is commonly assumed that the bulk conductivity mostly depends on the conductivity of pore-filling fluids, while surface conductivity is generally disregarded in the spatial and temporal variability of the aquifers, particularly, once the aquifer is affected by the presence of saltwater. Quantifying salinities based on a simplified petrophysical relationship can lead to misinterpretation in aquifers constituted by clay-rich sediments. In this study, we rely on co-located data from drilled boreholes to formulate petrophysical relationships between bulk and fluid conductivity for clay-bearing and clay-free sediments. First, the sedimentary samples from the drilled wells were classified according to their particle size distribution and analyzed in the lab using spectral IP in controlled salinity conditions to derive their formation factors, surface conductivity, and normalized chargeability. Second, the deduced thresholds are applied on the field to distinguish clay-bearing sediments from brackish sandy sediments. The results are validated with logging data and direct salinity measurements on water samples. We applied the approach along the Luy River catchment and found that the formation factors and surface conductivity of the different unconsolidated sedimentary classifications vary from 4.0 to 8.9 for coarse-grained sand and clay-bearing mixtures, while normalized chargeability above 1.0 mS.m-1 indicates the presence of clay. The clay-bearing sediments are mostly distributed in discontinuous small lenses. The assumption of homogenous geological media is therefore leading to overestimating SI in the heterogeneous clay-bearing aquifers.
Collapse
Affiliation(s)
- Diep Cong-Thi
- Department of Geology, Ghent University, Gent 9000, Belgium; Department of Marine Geology, Vietnam Institute of Geosciences and Mineral Resources (VIGMR), Hanoi 100000, Viet Nam..
| | - Linh Pham Dieu
- Department of Geology, Ghent University, Gent 9000, Belgium; Department of Marine Geology, Vietnam Institute of Geosciences and Mineral Resources (VIGMR), Hanoi 100000, Viet Nam
| | - David Caterina
- Department of Urban and Environmental Engineering, Liege University, Liège B52- 4000, Belgium
| | - Xavier De Pauw
- Department of Geology, Ghent University, Gent 9000, Belgium
| | - Huyen Dang Thi
- Department of Marine Geology, Vietnam Institute of Geosciences and Mineral Resources (VIGMR), Hanoi 100000, Viet Nam
| | - Huu Hieu Ho
- Department of Marine Geology, Vietnam Institute of Geosciences and Mineral Resources (VIGMR), Hanoi 100000, Viet Nam
| | - Frédéric Nguyen
- Department of Urban and Environmental Engineering, Liege University, Liège B52- 4000, Belgium; Department of Civil Engineering, KU Leuven, Leuven 3000, Belgium
| | - Thomas Hermans
- Department of Geology, Ghent University, Gent 9000, Belgium.
| |
Collapse
|
4
|
Geng R, Zhang B, Cheng H, Wang M, Dang Z. Pyrrhotite-dependent microbial reduction and magnetic separation for efficient vanadium detoxification and recovery in contaminated aquifer. Water Res 2024; 251:121143. [PMID: 38277824 DOI: 10.1016/j.watres.2024.121143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 01/05/2024] [Accepted: 01/14/2024] [Indexed: 01/28/2024]
Abstract
Microbial reduction under anaerobic condition is a promising method for remediating vanadate [V(V)] contamination in aquifers, while V(V) may be re-generated with redox fluctuations. The inability to remove vanadium after remediation has become a key issue limiting bioremediation. In this study, we proposed the use of pyrrhotite, a natural mineral with magnetic properties, to immobilize V(V) to insoluble V(IV) under microbial action and remove vanadium from the aquifer using a magnetic field, which could avoid the problem of V(V) recontamination under redox fluctuating conditions. Up to 49.0 ± 4.7 % of vanadium could be removed from the aquifer by the applied magnetic field, and the vanadium in the aquifer after the reaction was mainly in the acid-extractable and reducible states. pH had a strong effect on the magnetic recovery of V(V), while the influence of initial V(V) concentration was weak. Microbial community structure analysis showed that Thiobacillus, Proteiniphilum, Fermentimonas, and Desulfurivibrio played key roles for V(V) reduction and pyrrhotite oxidation. Structural equation model indicated the positive correlation between these genera with the magnetic recovery of vanadium. Real time-qPCR confirmed the roles of functional genes of V(V) reduction (napA and nirK) and SO42- reduction (dsrA) in such biological processes. This study provides a novel route to sustainable V(V) remediation in aquifers, with synchronous recovery of vanadium resources without rebound.
Collapse
Affiliation(s)
- Rongyue Geng
- MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, School of Water Resources and Environment, China University of Geosciences Beijing, Beijing 100083, PR China
| | - Baogang Zhang
- MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, School of Water Resources and Environment, China University of Geosciences Beijing, Beijing 100083, PR China.
| | - Haoyi Cheng
- State Key Laboratory of Urban Water Resource and Environment, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, PR China
| | - Mengnan Wang
- MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, School of Water Resources and Environment, China University of Geosciences Beijing, Beijing 100083, PR China
| | - Zhi Dang
- School of Environment and Energy, MOE Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou 510006, PR China
| |
Collapse
|
5
|
Hashemi S, Shin I, Kim SO, Lee WC, Lee SW, Jeong DH, Kim M, Kim HK, Yang J. Health risk assessment of uranium intake from private residential drinking groundwater facilities based on geological characteristics across the Republic of Korea. Sci Total Environ 2024; 913:169252. [PMID: 38092210 DOI: 10.1016/j.scitotenv.2023.169252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 12/02/2023] [Accepted: 12/07/2023] [Indexed: 01/05/2024]
Abstract
Groundwater contributes to an average of 8 % of the total water source capacity in the Republic of Korea. Hence, private residential households in rural areas in Korea are still using groundwater for drinking without any regular water quality inspection. This can increase the risk of exposure to natural radionuclides like uranium through drinking groundwater. This study investigated the uranium level in drinking groundwater all over the country by analyzing 11,451 samples from private residential drinking groundwater facilities and compared the exposure amount and its associated carcinogenic and non-carcinogenic risk based on the geological characteristics of the aquifer. Results yield that although the average hazard quotient (HQ) and excess cancer risk (ECR) of exposure to natural uranium through drinking groundwater were respectively below 1 and 1 × 10-6 and do not indicate a potential health hazard, significantly high HQ and ECR up to respectively 70 and 4 × 10-4 in samples where the aquifer is the Jurassic granite observed. Accordingly, regular water quality investigation and onsite treatment methods are required to provide healthy drinking water in such areas.
Collapse
Affiliation(s)
- Shervin Hashemi
- Institute for Environmental Research, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea; Honorary Research Associate, Faculty of Management Science, Durban University of Technology, P O Box 1334, Durban 4000, South Africa
| | - Inkyu Shin
- Soil and Groundwater Research Division, National Institute of Environmental Research, Incheon 22689, South Korea
| | - Soon-Oh Kim
- Department of Geology and Research Institute of Natural Science (RINS), Gyeongsang National University (GNU), Jinju, Republic of Korea
| | - Woo-Chun Lee
- Department of Geology and Research Institute of Natural Science (RINS), Gyeongsang National University (GNU), Jinju, Republic of Korea; HS Environmental Technology Research Center, Hosung Inc., Jinju 52818, Republic of Korea
| | - Sang-Woo Lee
- Department of Geology and Research Institute of Natural Science (RINS), Gyeongsang National University (GNU), Jinju, Republic of Korea; HS Environmental Technology Research Center, Hosung Inc., Jinju 52818, Republic of Korea
| | - Do Hwan Jeong
- Soil and Groundwater Research Division, National Institute of Environmental Research, Incheon 22689, South Korea
| | - MoonSu Kim
- Soil and Groundwater Research Division, National Institute of Environmental Research, Incheon 22689, South Korea
| | - Hyun-Koo Kim
- Soil and Groundwater Research Division, National Institute of Environmental Research, Incheon 22689, South Korea
| | - Jiyeon Yang
- Institute for Environmental Research, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea.
| |
Collapse
|
6
|
Yu W, Zheng T, Guo B, Tao Y, Liu L, Yan N, Zheng X. Coupling of polyhydroxybutyrate and zero-valent iron for enhanced treatment of nitrate pollution within the Permeable Reactive Barrier and its downgradient aquifer. Water Res 2024; 250:121060. [PMID: 38181646 DOI: 10.1016/j.watres.2023.121060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 12/18/2023] [Accepted: 12/22/2023] [Indexed: 01/07/2024]
Abstract
Permeable Reactive Barriers (PRBs) have been utilized for mitigating nitrate pollution in groundwater systems through the use of solid carbon and iron fillers that release diverse nutrients to enhance denitrification efficiency. We conduct laboratory column tests to evaluate the effectiveness of PRBs in remediating nitrate pollution both within the PRB and in the downgradient aquifer. We use an iron-carbon hydrogel (ICH) as PRB filler, which has different weight ratios of polyhydroxybutyrate (PHB) and microscale zero-valent iron (mZVI). Results reveal that denitrification in the downgradient aquifer accounts for at least 19.5 % to 32.5 % of the total nitrate removal. In the ICH, a higher ratio of PHB to mZVI leads to higher contribution of the downgradient aquifer to nitrate removal, while a lower ratio results in smaller contribution. Microbial community analysis further reveals that heterotrophic and mixotrophic bacteria dominate in the downgradient aquifer of the PRB, and their relative abundance increases with a higher ratio of PHB to mZVI in the ICH. Within the PRB, autotrophic and iron-reducing bacteria are more prevalent, and their abundance increases as the ratio of PHB to mZVI in the ICH decreases. These findings emphasize the downgradient aquifer's substantial role in nitrate removal, particularly driven by dissolved organic carbon provided by PHB. This research holds significant implications for nutrient waste management, including the prevention of secondary pollution, and the development of cost-effective PRBs.
Collapse
Affiliation(s)
- Wenhao Yu
- Key Lab of Marine Environmental Science and Ecology, Ministry of Education, College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, PR China; Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering, Ocean University of China, Qingdao 266100, China
| | - Tianyuan Zheng
- Key Lab of Marine Environmental Science and Ecology, Ministry of Education, College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, PR China; Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering, Ocean University of China, Qingdao 266100, China.
| | - Bo Guo
- Department of Hydrology and Atmospheric Sciences, University of Arizona, Tucson, AZ, USA.
| | - Yiheng Tao
- Department of Civil and Environmental Engineering, Princeton University, Princeton, NJ08544, USA
| | - Lecheng Liu
- Key Lab of Marine Environmental Science and Ecology, Ministry of Education, College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, PR China; Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering, Ocean University of China, Qingdao 266100, China
| | - Ni Yan
- Key Lab of Marine Environmental Science and Ecology, Ministry of Education, College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, PR China; Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering, Ocean University of China, Qingdao 266100, China
| | - Xilai Zheng
- Key Lab of Marine Environmental Science and Ecology, Ministry of Education, College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, PR China; Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering, Ocean University of China, Qingdao 266100, China
| |
Collapse
|
7
|
Nakajima T, Kuragano M, Yamada M, Sugimoto R. Comparing nearshore and embayment scale assessments of submarine groundwater discharge: Significance of offshore groundwater discharge as a nutrient pathway. Sci Total Environ 2024; 908:168068. [PMID: 37914127 DOI: 10.1016/j.scitotenv.2023.168068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 10/07/2023] [Accepted: 10/21/2023] [Indexed: 11/03/2023]
Abstract
Submarine groundwater discharge (SGD) can influence biogeochemical cycles in coastal seas by delivering nutrients from the seafloor. Comparison between the nearshore and embayment scale assessments of SGD against river water discharge would be crucial for understanding biogeochemical impacts on the coastal seas because the discharge pattern (non-point or point pathway) is different. Here, we quantified SGD contribution to rivers in nutrient budgets at two scales within a coastal embayment (Obama Bay, Japan) by mass balance models of radon and radium isotopes. We then compared the SGD contribution between the two scales by the meta-analysis for regional data sets conducted in nearshore and embayment scales. The estimated SGD rates in the nearshore and embayment scales in the bay were 7.8 cm d-1 and 20.0 cm d-1, indicating that offshore SGD was more significant than nearshore. The ratios of nutrient fluxes derived from SGD to rivers (SGD:River) in the nearshore scale were 1.7 for dissolved inorganic nitrogen (DIN), 3.0 for phosphorus (DIP), and 0.5 for silica (DSi), while those in the embayment scale increased to 10.4 for DIN, 18.5 for DIP, and 3.9 for DSi. This result indicates that SGD-derived nutrients become more important at larger spatial scales. Meta-analysis revealed that the difference in the contribution of SGD to rivers was affected by the seafloor size and there was no significant difference in SGD rates between nearshore and embayment scale studies. However, our regional study shows the site-specific pattern that SGD rates in the embayment scale were higher than those in the nearshore scale. Overall, we clarified that SGD can be a crucial nutrient pathway for coastal embayments regardless of the spatial scales and contribute to coastal nutrient biogeochemistry in more offshore areas.
Collapse
Affiliation(s)
- Toshimi Nakajima
- Graduate School of Bioscience and Biotechnology, Fukui Prefectural University, Fukui, Japan.
| | - Mao Kuragano
- Graduate School of Bioscience and Biotechnology, Fukui Prefectural University, Fukui, Japan.
| | - Makoto Yamada
- Faculty of Economics, Ryukoku University, Kyoto, Japan.
| | - Ryo Sugimoto
- Faculty of Marine Biosciences and Technology, Fukui Prefectural University, Fukui, Japan.
| |
Collapse
|
8
|
Castilla-Alcantara JC, Posada-Baquero R, Ortega-Calvo JJ. Taxis-mediated bacterial transport and its implication for the cometabolism of pyrene in a model aquifer. Water Res 2024; 248:120850. [PMID: 37976951 DOI: 10.1016/j.watres.2023.120850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 09/28/2023] [Accepted: 11/07/2023] [Indexed: 11/19/2023]
Abstract
One of the main problems in contaminated soils is that many toxic substances, such as PAHs, which are found in areas close to aquifers and groundwater, are difficult to access and degrade via traditional methods of remediation. The use of controlled bacterial mobility through chemotaxis has been shown to be efficient in increasing the dispersion of pollutant-degrading organisms, increasing the biodegradation rates of pollutants. In this study, using percolation columns as model aquifers, the mobilization of the Pseudomonas putida G7 strain to a distant pyrene source was demonstrated using γ-aminobutyric acid and artificial root exudates as strong chemoeffectors. An increase in the biodegradation rates of the pollutant was observed relative to columns in which the tactic effector was not added. The presence of different metabolites was detected via a fraction collector associated with an HPLC system, providing evidence for the cometabolic capacity of strain G7. The use of chemotactic organisms can be an effective approach for the remediation of polluted sediments associated with aquifers and groundwaters, offering new possibilities for the treatment of contaminated aqueous areas.
Collapse
Affiliation(s)
- Jose Carlos Castilla-Alcantara
- Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS-CSIC), Avda. Reina Mercedes 10, E-41012, Seville, Spain
| | - Rosa Posada-Baquero
- Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS-CSIC), Avda. Reina Mercedes 10, E-41012, Seville, Spain
| | - Jose Julio Ortega-Calvo
- Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS-CSIC), Avda. Reina Mercedes 10, E-41012, Seville, Spain.
| |
Collapse
|
9
|
Oh MS, Namgung G, Kim H. Enhanced air sparging for groundwater remediation using alginate gel-based removable hydraulic barriers. J Contam Hydrol 2024; 260:104258. [PMID: 38064800 DOI: 10.1016/j.jconhyd.2023.104258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 10/10/2023] [Accepted: 10/20/2023] [Indexed: 01/05/2024]
Abstract
The objective of this study was to investigate the effect of a removable physical barrier on the air sparging performance using a lab-scale aquifer model was investigated. The barrier was installed in water-saturated porous media, prior to the air sparging, by injecting calcium chloride aqueous solution into the aquifer with pre-applied alginate solution. Changes in the air flow direction and air flux at the media surface during air sparging were evaluated. With a hydrogel barrier set at the center of the media, the airflow detoured the barrier resulting in a bimodal air flux distribution at the media surface. While employing two gel-formed barriers positioned away from the media's center, the airflow concentrated specifically on the gap between the barriers. The hydrogel was successfully removed using a sodium bicarbonate solution (1.0 mol/L). Using the hydrogel barrier, the performance of air sparging was significantly enhanced for removing contaminants [tetrachloroethene (PCE) and n-hexane mixture] due to increased air flux; 9.8% of PCE applied (7.8 g) was removed during 120 min air sprging for the gel barrier system whereas no PCE was removed for the control. Alginate gel did not show significant sorption capacity for PCE. It was stable in the contaminant up to 68 days with reasonable loss of its mass. Findings of this study present a promising option for air sparging process specifically targeting the contaminant source zone in the aquifer.
Collapse
Affiliation(s)
- Min-Su Oh
- Department of Environmental Sciences and Biotechnology, Hallym University, Chuncheon, Gangwon-do 24252, Republic of Korea
| | - Geon Namgung
- Department of Environmental Sciences and Biotechnology, Hallym University, Chuncheon, Gangwon-do 24252, Republic of Korea
| | - Heonki Kim
- Department of Environmental Sciences and Biotechnology, Hallym University, Chuncheon, Gangwon-do 24252, Republic of Korea.
| |
Collapse
|
10
|
Khezami F, Gómez-Navarro O, Barbieri MV, Khiari N, Chkirbene A, Chiron S, Khadhar S, Pérez S. Occurrence of contaminants of emerging concern and pesticides and relative risk assessment in Tunisian groundwater. Sci Total Environ 2024; 906:167319. [PMID: 37742978 DOI: 10.1016/j.scitotenv.2023.167319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 09/12/2023] [Accepted: 09/22/2023] [Indexed: 09/26/2023]
Abstract
Groundwater is an important source for drinking water supply, agricultural irrigation and industrial uses in the Middle East and North Africa region. Due to the growing need for groundwater use, groundwater quality studies on the presence of contaminants of emerging concern (CECs) and pesticides have gained attention. The Wadi El Bey is one of the most polluted areas in Tunisia. However, very limited data on CECs infiltration into aquifers has been described, in comparison to industrialized countries where groundwater contamination has been comprehensively addressed. To gain early insight into potential contamination, groundwater wells in northeast Tunisia, an area with high population density and intensive agricultural activity were sampled during two seasons and were analyzed with two high resolution mass spectrometry approaches: target and suspect screening. The latter was used for screening banned pesticides. A selection of 116 CECs of which 19 are transformation products (TPs) and 20 pesticides previously prioritized by suspect screening were screened in the groundwater samples. The results showed the presence of 69 CECs and 1 TP and 20 pesticides at concentrations per well, ranging between 43 and 7384 ng L-1 and 7.3 and 80 ng L-1, respectively. CECs concentrations in Tunisian groundwater do not differ from those in industrialized countries. WWTPs were considered the main source of pollution, where the main classes detected were analgesics, antihypertensives and artificial sweeteners and especially caffeine, salicylic acid and ibuprofen were found to be ubiquitous. Regarding pesticides, triazines herbicides and carbamates insecticides pose the highest concern due to their ubiquitous presence, high leachability potential for most of them and high toxicity. The environmental risk assessment (ERA) highlighted the high risk that caffeine, ibuprofen, and propoxur may pose to the environment, and consequently, to non-target organisms. This study provides occurrence and ERA analysis of CECs and pesticides in Tunisian groundwater.
Collapse
Affiliation(s)
- Farah Khezami
- Laboratory of Georessources, Technopole of Borj Cedria, University Carthage, Soliman, Tunisia
| | | | - Maria Vittoria Barbieri
- UMR HydroSciences Montpellier, University of Montpellier, IRD, CNRS, 15 Av. Charles Flahault, 34093 Montpellier, France
| | - Nouha Khiari
- Laboratory of Georessources, Technopole of Borj Cedria, University Carthage, Soliman, Tunisia
| | - Anis Chkirbene
- LR16AGR02 Water Science and Technology Research Laboratory, National Institute of Agronomy, University of Carthage, Tunis, Tunisia
| | - Serge Chiron
- UMR HydroSciences Montpellier, University of Montpellier, IRD, CNRS, 15 Av. Charles Flahault, 34093 Montpellier, France
| | - Samia Khadhar
- Laboratory of Georessources, Technopole of Borj Cedria, University Carthage, Soliman, Tunisia
| | - Sandra Pérez
- ONHEALTH, IDAEA-CSIC, C/Jordi Girona 18-26, 08034 Barcelona, Spain.
| |
Collapse
|
11
|
Rudakov D, Pikarenia D, Orlinska O, Rudakov L, Hapich H. A predictive assessment of the uranium ore tailings impact on surface water contamination: Case study of the city of Kamianske, Ukraine. J Environ Radioact 2023; 268-269:107246. [PMID: 37506478 DOI: 10.1016/j.jenvrad.2023.107246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 07/11/2023] [Accepted: 07/19/2023] [Indexed: 07/30/2023]
Abstract
In this study, we present an assessment of the uranium ore tailings impact on groundwater and surface water contamination. The radioactive materials were deposited in the tailings storage facility "Dniprovske" (the city of Kamianske, Ukraine) from 1954 to 1968; now it contains about 5.85·106 m3 of hazardous waste on the area of about 76 ha in the floodplain of the Dnipro river. The lack of a proper waterproof screen below deposited tailings and in the earthen dam led to permanent watering of radioactive materials, their leaching and migration in groundwater into the nearest small Konoplianka river. We used the reports on previous site-specific studies conducted in 1999-2016, monitoring results, and the field studies conducted in 2022 with the authors' team participation. The calculations performed with the advection-dispersion model to simulate transport of radionuclides 238U, 230Th, 226Ra and 210Pb through the embankment to the Konoplianka river and dilution relations were compared to the monitoring data of the surface water quality. Among four radionuclides, uranium poses the greatest risks today; the subsurface runoff increases its concentration in the Konoplianka river water by several times over the background value. It is estimated that due to much more intensive sorption in the shallow aquifer, the contribution of 226Ra and 210Pb to the increase in radioactivity of Konoplianka river water is insignificant compared to uranium, whereas the migration front of 230Th has probably not yet reached the riverbank. In the next 50 years the radionuclide fluxes will increase by 1.3-3.7 times for different isotopes, with the uranium subsurface runoff growing at a slower rate than nowadays. These results are of high significance for improving hydrological, hydrogeological, and geotechnical monitoring on this hazardous facility to maintain its radiation safety.
Collapse
Affiliation(s)
- Dmytro Rudakov
- Dnipro University of Technology, 19, Dmytro Yavornytskyi Avenue, Dnipro, UA-49005, Ukraine
| | - Dmytro Pikarenia
- Technical University "Metinvest Polytechnic" LLC, 80, Pivdenne Shosse St., Zaporizhzhia, UA-69008, Ukraine
| | - Olha Orlinska
- Technical University "Metinvest Polytechnic" LLC, 80, Pivdenne Shosse St., Zaporizhzhia, UA-69008, Ukraine
| | - Leonid Rudakov
- Dnipro State Agrarian and Economic University, 25, Serhiy Efremov St., Dnipro, UA-49600, Ukraine
| | - Hennadii Hapich
- Dnipro State Agrarian and Economic University, 25, Serhiy Efremov St., Dnipro, UA-49600, Ukraine.
| |
Collapse
|
12
|
Boumaiza L, Ben Ammar S, Chesnaux R, Stotler RL, Mayer B, Huneau F, Johannesson KH, Levison J, Knöller K, Stumpp C. Nitrate sources and transformation processes in groundwater of a coastal area experiencing various environmental stressors. J Environ Manage 2023; 345:118803. [PMID: 37611515 DOI: 10.1016/j.jenvman.2023.118803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 07/28/2023] [Accepted: 08/10/2023] [Indexed: 08/25/2023]
Abstract
In coastal salinized groundwater systems, contamination from various nitrate (NO3) inputs combined with complex hydrogeochemical processes make it difficult to distinguish NO3 sources and identify potential NO3 transformtation processes. Effective field-based NO3 studies in coastal areas are needed to improve the understanding of NO3 contamination dynamics in groundwater of such complex coastal systems. This study focuses on a typical Mediterranean coastal agricultural area, located in Tunisia, experiencing substantial NO3 contamination from multiple anthropogenic sources. Here, multiple isotopic tracers (δ18OH2O, δ2HH2O, δ15NNO3, δ18ONO3, and δ11B) combined with a Bayesian isotope MixSIAR model are used (i) to identify the major NO3 sources and their contributions, and (ii) to describe the potential NO3 transformation processes. The measured NO3 concentrations in groundwater are above the natural baseline threshold, suggesting anthropogenic influence. The measured isotopic composition of NO3 indicates that manure, soil organic matter, and sewage are the potential sources of NO3, while δ11B values constrain the NO3 contamination to manure; a finding that is supported by the results of MixSIAR model revealing that manure-derived NO3 dominates over other likely sources. Nitrate derived from manure in the study area is attributed to organic fertilizers used to promote crop growth, and livestock that deposit manure directly on the ground surface. Evidence for ongoing denitrification in groundwaters of the study area is supported by an enrichment in both 15N and 18O in the remaining NO3, although isotopic mass balances between the measured and the theoretical δ18ONO3 values also suggest the occurrence of nitrification. The simultaneous occurrence of these biogeochemical processes with heterogeneous distribution across the study area reflect the complexity of interactions within the investigated coastal aquifer. The multiple isotopic tracer approach used here can identify the effect of multiple NO3 anthropogenic activities in coastal environments, which is fundamental for sustainable groundwater resources management.
Collapse
Affiliation(s)
- Lamine Boumaiza
- University of Waterloo, Department of Earth and Environmental Sciences, Waterloo, Ontario, N2T 0A4, Canada.
| | - Safouan Ben Ammar
- Université de Carthage, Institut Supérieur des Technologies de L'Environnement de L'Urbanisme et de Bâtiment, Tunis, 2035, Tunisia
| | - Romain Chesnaux
- Université Du Québec à Chicoutimi, Département des Sciences Appliquées, Saguenay, Québec, G7H 2B1, Canada
| | - Randy L Stotler
- University of Waterloo, Department of Earth and Environmental Sciences, Waterloo, Ontario, N2T 0A4, Canada
| | - Bernhard Mayer
- University of Calgary, Department of Geoscience, Calgary, Alberta, T2N 1N4 Canada
| | - Frédéric Huneau
- Université de Corse, CNRS UMR 6134 SPE, Département d'Hydrogéologie, Campus Grimaldi BP52, Corte, 20250, France
| | - Karen H Johannesson
- University of Massachusetts Boston, School for the Environment, Boston, MA, 02125, USA
| | - Jana Levison
- University of Guelph, School of Engineering, Morwick G360 Groundwater Research Institute, Guelph, Ontario, N1G 2W1, Canada
| | - Kay Knöller
- Helmholtz Centre for Environmental Research, Department of Catchment Hydrology, Halle, Saale, 06120, Germany
| | - Christine Stumpp
- University of Natural Resources and Life Sciences, Institute of Soil Physics and Rural Water Management, Vienna, 1190, Austria
| |
Collapse
|
13
|
Castellazzi P, Schmid W, Fu G. Exploring the potential for groundwater-related ground deformation in Southern New South Wales, Australia. Sci Total Environ 2023; 895:165167. [PMID: 37379933 DOI: 10.1016/j.scitotenv.2023.165167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 06/21/2023] [Accepted: 06/25/2023] [Indexed: 06/30/2023]
Abstract
Unsustainable groundwater extraction can lead to aquifer compaction, damages to infrastructure, changes of water accumulation in rivers and lakes and to a decrease of the aquifer's ability to store water for future generations. While this phenomenon is well identified across the globe, the potential for groundwater-related ground deformation is still largely unknown for most of the heavily exploited aquifers of Australia. This study fills that science gap by exploring signs of this phenomenon across a large region comprising seven of Australia's most intensively exploited aquifers, in the New South Wales Riverina region. To detect ground deformation, we processed 396 Sentinel-1 swaths acquired during 2015-2020 using a multitemporal spaceborne radar interferometry (InSAR), leading to the production of a near-continuous ground deformation maps covering ~280,000 km2. To explore potential groundwater-induced deformation hotspots, four criteria are used in a multiple-line of evidence approach: (1) the amplitude, shape, and extent of the InSAR ground displacement anomaly, (2) the spatial correspondence with groundwater extraction hotspots. (3) The correlations between InSAR deformation time series and change in head levels in 975 wells. Four areas are identified as potentially prone to inelastic, groundwater-related deformations, with average deformation rates ranging from -10 to -30 mm/yr, high rates of groundwater extraction, and ample critical head drops. Comparison of ground deformation and groundwater level time series also suggests potential for elastic deformation in some of these aquifers. This study will help water managers mitigating the groundwater-related ground deformation risk.
Collapse
Affiliation(s)
- Pascal Castellazzi
- Commonwealth Scientific and Industrial Research Organisation (CSIRO), Environment, Deep Earth Imaging FSP, Waite Road, Entrance 4, Urrbrae, SA 5064, Australia.
| | - Wolfgang Schmid
- Commonwealth Scientific and Industrial Research Organisation (CSIRO), Environment, 147 Underwood Avenue, Floreat, WA 6014, Australia
| | - Guobin Fu
- Commonwealth Scientific and Industrial Research Organisation (CSIRO), Environment, 147 Underwood Avenue, Floreat, WA 6014, Australia
| |
Collapse
|
14
|
Bridoux MC, Gaiffe G, Pacholski P, Cangemi S, Vinci G, Spaccini R, Schramm S. Concealed by darkness: Combination of NMR and HRMS reveal the molecular nature of dissolved organic matter in fractured-rock groundwater and connected surface waters. Water Res 2023; 243:120392. [PMID: 37542781 DOI: 10.1016/j.watres.2023.120392] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 07/18/2023] [Accepted: 07/19/2023] [Indexed: 08/07/2023]
Abstract
Detailed molecular composition of solid phase extracted dissolved organic matter (SPEDOM) collected from fractured-rock groundwater was compared to connected surface river water at two different watersheds in the unconfined chalk aquifer of Champagne in France using full scan ultrahigh resolution electrospray and photoionization Fourier transform ion cyclotron mass spectrometry (FT-ICR MS), Orbitrap tandem MS (MS/MS) and 1H magnetic resonance spectroscopy (NMR). 1H NMR spectroscopy indicated that groundwater SPEDOM carried a higher contribution of aliphatic compounds while surface river waters SPEDOM were enriched in carboxyl-rich alicyclic molecules (CRAM), acetate derivatives and oxygenated units. Furthermore, we show here that use of photoionization (APPI(+)) in aquifer studies is key, ionizing about eight times more compounds than ESI in surface river water samples, specifically targeting the dissolved organic nitrogen pool, accounting for more than 50% of the total molecular space, as well as a non-polar, more aromatic fraction; with little overlap with compounds detected by ESI(-) FT-ICR MS. On the other hand, groundwater SPEDOM samples did not show similar selectivity as less molecular diversity was observed in APPI compared to ESI. Mass-difference transformation networks (MDiNs) applied to ESI(-) and APPI(+) FT-ICR MS datasets provided an overview of the biogeochemical relationships within the aquifer, revealing chemical diversity and microbial/abiotic reactions. Finally, the combination of ESI(-) FT-ICR MS and detailed Orbitrap MS/MS analysis revealed a pool of polar, anthropogenic sulfur-containing surfactants in the groundwaters, likely originating from agricultural runoff. Overall, our study shows that in this aquifer, groundwater SPEDOM contains a significantly reduced pool of organic compounds compared to surface river waters, possibly related to a combination of lack of sunlight and adsorption of high O/C formulas to mineral surfaces.
Collapse
Affiliation(s)
| | - G Gaiffe
- CEA, DAM, DIF, F-91297 Arpajon, France
| | - P Pacholski
- CEA, DAM, DIF, F-91297 Arpajon, France; Laboratoire de Chimie et de Physique-Approches Multi-échelles des Milieux Complexes (LCP-A2MC), Université de Lorraine, Metz, France
| | - S Cangemi
- Centro Interdipartimentale di Ricerca sulla Risonanza Magnetica Nucleare per l'Ambiente, l'Agroalimentare e Nuovi Materiali (CERMANU), Università di Napoli Federico II, Via Università, 100, Portici (NA), 80055, Italy
| | - G Vinci
- Centro Interdipartimentale di Ricerca sulla Risonanza Magnetica Nucleare per l'Ambiente, l'Agroalimentare e Nuovi Materiali (CERMANU), Università di Napoli Federico II, Via Università, 100, Portici (NA), 80055, Italy
| | - R Spaccini
- Centro Interdipartimentale di Ricerca sulla Risonanza Magnetica Nucleare per l'Ambiente, l'Agroalimentare e Nuovi Materiali (CERMANU), Università di Napoli Federico II, Via Università, 100, Portici (NA), 80055, Italy
| | - S Schramm
- Laboratoire de Chimie et de Physique-Approches Multi-échelles des Milieux Complexes (LCP-A2MC), Université de Lorraine, Metz, France
| |
Collapse
|
15
|
Srivastava A, Valsala R, Jagadevan S. Biogeochemical modelling to assess benzene removal by biostimulation in aquifers containing natural reductants. Environ Sci Pollut Res Int 2023; 30:88022-88035. [PMID: 37436629 DOI: 10.1007/s11356-023-28506-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 06/26/2023] [Indexed: 07/13/2023]
Abstract
Biostimulation of aquifers contaminated with gasoline spills is vigorously affected by the biogeochemical environment existing there. In this study, biostimulation of benzene is simulated using a 2D coupled multispecies biogeochemical reactive transport (MBRT) model. The model is implemented at an oil spill site near a hypothetical aquifer containing natural reductants. Multiple electron acceptors are introduced to promote faster biodegradation rate. However, after reaction with natural reductants, it reduces the number of available electron acceptors, acidifies the subsurface environment, and inhibits bacterial growth. These mechanisms are assessed using seven coupled MBRT models sequentially. The finding of the present analysis reveals that biostimulation has caused a substantial drop in concentration of benzene and is efficient in reducing its penetration depth. The results also shows that the intervention of natural reductants in the biostimulation process is slightly diminished by pH adjustment of aquifers. When the pH level in aquifer changes from acidic pH 4 to neutral pH 7, it is observed that the biostimulation rate of benzene as well as microbial activity increases. Electron acceptors consumption is more at neutral pH. Overall, it can be inferred from zeroth-order spatial moment and sensitivity analyses that retardation factor, inhibition constant, pH, and dispersivity in vertical direction significantly affect benzene biostimulation in aquifers.
Collapse
Affiliation(s)
- Akanksha Srivastava
- Department of Civil Engineering, IIT (ISM) Dhanbad, Dhanbad, Jharkhand, 826004, India.
| | - Renu Valsala
- Department of Civil Engineering, IIT (ISM) Dhanbad, Dhanbad, Jharkhand, 826004, India
| | - Sheeja Jagadevan
- Department of Environmental Science and Engineering, IIT (ISM) Dhanbad, Dhanbad, Jharkhand, 826004, India
| |
Collapse
|
16
|
Janzen FH, Pérez-Rodríguez R, Domínguez-Domínguez O, Hendrickson DA, Sabaj MH, Blouin-Demers G. Phylogenetic relationships of the North American catfishes (Ictaluridae, Siluriformes): Investigating the origins and parallel evolution of the troglobitic species. Mol Phylogenet Evol 2023; 182:107746. [PMID: 36849094 DOI: 10.1016/j.ympev.2023.107746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 02/09/2023] [Accepted: 02/22/2023] [Indexed: 02/27/2023]
Abstract
Insular habitats have played an important role in developing evolutionary theory, including natural selection and island biogeography. Caves are insular habitats that place extreme selective pressures on organisms due to the absence of light and food scarcity. Therefore, cave organisms present an excellent opportunity for studying colonization and speciation in response to the unique abiotic conditions that require extreme adaptations. One vertebrate family, the North American catfishes (Ictaluridae), includes four troglobitic species that inhabit the karst region bordering the western Gulf of Mexico. The phylogenetic relationships of these species have been contentious, and conflicting hypotheses have been proposed to explain their origins. The purpose of our study was to construct a time-calibrated phylogeny of Ictaluridae using first-occurrence fossil data and the largest molecular dataset on the group to date. We test the hypothesis that troglobitic ictalurids have evolved in parallel, thus resulting from repeated cave colonization events. We found that Prietella lundbergi is sister to surface-dwelling Ictalurus and that Prietella phreatophila + Trogloglanis pattersoni are sister to surface-dwelling Ameiurus, suggesting that ictalurids colonized subterranean habitats at least twice in evolutionary history. The sister relationship between Prietella phreatophila and Trogloglanis pattersoni may indicate that these two species diverged from a common ancestor following a subterranean dispersal event between Texas and Coahuila aquifers. We recovered Prietella as a polyphyletic genus and recommend P. lundbergi be removed from this genus. With respect to Ameiurus, we found evidence for a potentially undescribed species sister to A. platycephalus, which warrants further investigation of Atlantic and Gulf slope Ameiurus species. In Ictalurus, we identified shallow divergence between I. dugesii and I. ochoterenai, I. australis and I. mexicanus, and I. furcatus and I. meridionalis, indicating a need to reexamine the validity of each species. Lastly, we propose minor revisions to the intrageneric classification of Noturus including the restriction of subgenus Schilbeodes to N. gyrinus (type species), N. lachneri, N. leptacanthus, and N. nocturnus.
Collapse
Affiliation(s)
- Francesco H Janzen
- Department of Biology, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada.
| | | | | | - Dean A Hendrickson
- Biodiversity Center, Texas Natural History Collections, University of Texas at Austin, Austin, TX 78758, United States
| | - Mark H Sabaj
- The Academy of Natural Sciences of Drexel University, Philadelphia, PA 19103, United States
| | | |
Collapse
|
17
|
Carrión-Mero P, Tiviano I, Hervas E, Jaya-Montalvo M, Malavé-Hernández J, Solórzano J, Berrezueta E, Morante-Carballo F. Water Sowing and harvesting application for water management on the slopes of a volcano. Heliyon 2023; 9:e16029. [PMID: 37206048 PMCID: PMC10189417 DOI: 10.1016/j.heliyon.2023.e16029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 05/01/2023] [Accepted: 05/03/2023] [Indexed: 05/21/2023] Open
Abstract
The present study aims to elaborate a hydrogeological characterisation in the Water Sowing and Harvesting context. The study is focused on rural parishes in the Ecuadorian Andes that, despite their proximity to snow sources (Chimborazo glaciers), need more supply of this resource, to satisfy the demand of a population of 70,466 inhabitants. The study is based on hydrology and geomorphological analysis, a geophysical exploration, and a definition of water management strategies. The application of non-destructive geophysical methods and Geographic Information Systems support the hydrogeological study and the proposal of strategies for sustainable water management on the slopes of the Chimborazo volcano. An aquifer potential was identified (sand, gravel and fractured porphyritic andesites) with resistivity values between 51.3 and 157 Ω m at an approximate depth of 30 m from the geophysical characterisation addressed. This potential saturated zone is on the southern slope of the Chimborazo volcano within the hydrographic watershed, with favourable drainage networks for water accumulation. The aquifer shows a high-water saturation level but uncontrolled losses. As a consequence of these characteristics, alternatives for managing water resources are proposed, such as wells construction, using Water Sowing and Harvesting system methods ("camellones") based on Nature-Based Solutions, dam construction and environmental education. The different proposals are associated with the four sustainability axes of Brundtland (economic, social, environmental and cultural axis) and contribute to the sixth objective of the Sustainable Development Goal 2030 Agenda.
Collapse
Affiliation(s)
- Paúl Carrión-Mero
- Facultad de Ingeniería Ciencias de la Tierra (FICT), ESPOL Polytechnic University, Escuela Superior Politécnica del Litoral, ESPOL, Campus Gustavo Galindo Km 30.5 Vía Perimetral, P.O. Box 09-01-5863, Guayaquil, Ecuador
- Centro de Investigación y Proyectos Aplicados a las Ciencias de la Tierra, CIPAT-ESPOL, Polytechnic University, Escuela Superior Politécnica del Litoral (ESPOL), Campus Gustavo Galindo, Km. 30.5 Vía Perimetral, 09-01-5863 Guayaquil, Ecuador
- Corresponding author. Facultad de Ingeniería Ciencias de la Tierra (FICT), ESPOL Polytechnic University, Escuela Superior Politécnica del Litoral, ESPOL, Campus Gustavo Galindo Km 30.5 Vía Perimetral, P.O. Box 09-01-5863, Guayaquil, Ecuador.
| | - Inés Tiviano
- Facultad de Ingeniería Ciencias de la Tierra (FICT), ESPOL Polytechnic University, Escuela Superior Politécnica del Litoral, ESPOL, Campus Gustavo Galindo Km 30.5 Vía Perimetral, P.O. Box 09-01-5863, Guayaquil, Ecuador
- Centro de Investigación y Proyectos Aplicados a las Ciencias de la Tierra, CIPAT-ESPOL, Polytechnic University, Escuela Superior Politécnica del Litoral (ESPOL), Campus Gustavo Galindo, Km. 30.5 Vía Perimetral, 09-01-5863 Guayaquil, Ecuador
| | - Edgar Hervas
- Facultad de Ingeniería Ciencias de la Tierra (FICT), ESPOL Polytechnic University, Escuela Superior Politécnica del Litoral, ESPOL, Campus Gustavo Galindo Km 30.5 Vía Perimetral, P.O. Box 09-01-5863, Guayaquil, Ecuador
- Centro de Investigación y Proyectos Aplicados a las Ciencias de la Tierra, CIPAT-ESPOL, Polytechnic University, Escuela Superior Politécnica del Litoral (ESPOL), Campus Gustavo Galindo, Km. 30.5 Vía Perimetral, 09-01-5863 Guayaquil, Ecuador
| | - María Jaya-Montalvo
- Facultad de Ingeniería Ciencias de la Tierra (FICT), ESPOL Polytechnic University, Escuela Superior Politécnica del Litoral, ESPOL, Campus Gustavo Galindo Km 30.5 Vía Perimetral, P.O. Box 09-01-5863, Guayaquil, Ecuador
- Centro de Investigación y Proyectos Aplicados a las Ciencias de la Tierra, CIPAT-ESPOL, Polytechnic University, Escuela Superior Politécnica del Litoral (ESPOL), Campus Gustavo Galindo, Km. 30.5 Vía Perimetral, 09-01-5863 Guayaquil, Ecuador
- Corresponding author. Facultad de Ingeniería Ciencias de la Tierra (FICT), ESPOL Polytechnic University, Escuela Superior Politécnica del Litoral, ESPOL, Campus Gustavo Galindo Km 30.5 Vía Perimetral, P.O. Box 09-01-5863, Guayaquil, Ecuador.
| | - Jenifer Malavé-Hernández
- Centro de Investigación y Proyectos Aplicados a las Ciencias de la Tierra, CIPAT-ESPOL, Polytechnic University, Escuela Superior Politécnica del Litoral (ESPOL), Campus Gustavo Galindo, Km. 30.5 Vía Perimetral, 09-01-5863 Guayaquil, Ecuador
| | - Joselyne Solórzano
- Facultad de Ingeniería Ciencias de la Tierra (FICT), ESPOL Polytechnic University, Escuela Superior Politécnica del Litoral, ESPOL, Campus Gustavo Galindo Km 30.5 Vía Perimetral, P.O. Box 09-01-5863, Guayaquil, Ecuador
- Centro de Investigación y Proyectos Aplicados a las Ciencias de la Tierra, CIPAT-ESPOL, Polytechnic University, Escuela Superior Politécnica del Litoral (ESPOL), Campus Gustavo Galindo, Km. 30.5 Vía Perimetral, 09-01-5863 Guayaquil, Ecuador
| | - Edgar Berrezueta
- Departamento de Recursos para la Transición Ecológica, Instituto Geológico y Minero de España (IGME, CSIC), Oviedo 33005, Spain
| | - Fernando Morante-Carballo
- Centro de Investigación y Proyectos Aplicados a las Ciencias de la Tierra, CIPAT-ESPOL, Polytechnic University, Escuela Superior Politécnica del Litoral (ESPOL), Campus Gustavo Galindo, Km. 30.5 Vía Perimetral, 09-01-5863 Guayaquil, Ecuador
- Geo-Recursos y Aplicaciones GIGA, Campus Gustavo Galindo, ESPOL Polytechnic University, Km. 30.5 Vía Perimetral, Guayaquil P.O. Box 09-01-5863, Ecuador
- Facultad de Ciencias Naturales y Matemáticas, ESPOL Polytechnic University, Guayaquil 09015863, Ecuador
| |
Collapse
|
18
|
Lyu Z, Liu W, Chi Z. Enhanced nitrate removal using in situ reactive zone with reduced graphene oxide supported nanoscale zero-valent iron. Environ Sci Pollut Res Int 2023; 30:53605-53615. [PMID: 36862295 DOI: 10.1007/s11356-023-26147-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 02/22/2023] [Indexed: 06/18/2023]
Abstract
Nitrate pollution in groundwater is becoming more serious, which is harmful to human health. The reduced graphene oxide supported nanoscale zero-valent iron (nZVI/rGO) composite prepared in this paper can effectively remove nitrate in groundwater. In situ remediation of nitrate-contaminated aquifer was also studied. The results showed that NH4+-N was the main product of NO3--N reduction, and N2 and NH3 were also produced. When the dosage of rGO/nZVI was more than 0.2 g/L, there was no accumulation of intermediate NO2--N during the reaction process. NO3--N was removed by rGO/nZVI mainly through physical adsorption and reduction process with the maximum adsorbing ability of 37.44 mg NO3--N/g. After the slurry of rGO/nZVI was injected into the aquifer, a stable reaction zone could be formed. NO3--N could be removed continuously within 96 h at the simulated tank, and NH4+-N and NO2--N were as the main reduction products. Moreover, the concentration of TFe near the injection well increased rapidly after rGO/nZVI injection, and could be detected at the downstream end, indicating that the reaction range was large enough for NO3--N removal.
Collapse
Affiliation(s)
- Zhibo Lyu
- Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, People's Republic of China
| | - Wanting Liu
- Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, People's Republic of China
| | - Zifang Chi
- Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, People's Republic of China.
| |
Collapse
|
19
|
Oh MS, Annable MD, Kim H. Temporary hydraulic barriers using organic gel for enhanced aquifer remediation during groundwater flushing: Bench-scale experiments. J Contam Hydrol 2023; 255:104143. [PMID: 36773413 DOI: 10.1016/j.jconhyd.2023.104143] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 12/30/2022] [Accepted: 01/29/2023] [Indexed: 06/18/2023]
Abstract
This study presents the use of organic gel-forming material for the construction of hydraulic barriers in aquifer, which can be easily removed after use. Experiments on the performance of the temporary hydraulic barrier during NAPL removal (aquifer flushing) were also conducted. An aqueous solution of sodium alginate was injected into the horizontally oriented, 2-dimensional flow chamber packed with sand, followed by gelation using a calcium solution. The alginate gel formed in the porous media produced a circular shape barrier (24 cm diameter, 1.3 cm thickness) that was successfully removed using sodium bicarbonate solution (1.0 M) in 72 h, whereas the gel was stable for 7 days during simulated groundwater flushing at the same flow rate as the sodium bicarbonate solution. When circular hydraulic barriers (12 cm diameter each, 14 cm apart) were set on either side of the NAPL (n-hexane and PCE mixture)-contaminated zone, the increased water flux during water flushing resulted in significantly increased PCE removal by almost 108%. When a surfactant solution (sodium dodecyl sulfate, 0.037%) was applied, the influenced groundwater flow controlled by hydraulic barriers on the NAPL removal was amplified by 196% removal.
Collapse
Affiliation(s)
- Min-Su Oh
- Department of Environmental Sciences and Biotechnology, Hallym University, Chuncheon, Gangwon-do 24252, Republic of Korea
| | - Michael D Annable
- Department of Environmental Engineering Sciences, University of Florida, Gainesville, FL 32611, USA
| | - Heonki Kim
- Department of Environmental Sciences and Biotechnology, Hallym University, Chuncheon, Gangwon-do 24252, Republic of Korea.
| |
Collapse
|
20
|
Panagopoulos GP, Katsanou KN, Barouchas PE. Assessment of groundwater vulnerability to nitrates using the GIS-based DRASTIC and SI methods: a case study in Zacharo area, Greece. Environ Monit Assess 2023; 195:286. [PMID: 36626097 DOI: 10.1007/s10661-022-10882-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 12/17/2022] [Indexed: 06/17/2023]
Abstract
A vulnerability assessment of the aquifers in the agricultural area of Zacharo in SW, Peloponnese, Greece, was conducted using the DRASTIC index and the susceptibility index (SI). Sensitivity analysis was conducted and thematic maps for each parameter were generated to analyse the impact of individual parameter on the collective groundwater vulnerability. Results derived from the DRASTIC and SI maps revealed that the extremely highly vulnerable zones are concentrated at three coastal sites in the western part of the study area. Data from these maps also indicate low vulnerability areas throughout the eastern part of the region. The distribution of nitrate concentrations in groundwater is better correlated with the DRASTIC (79.2%) compared to SI (60.2%). Neither method takes into consideration the impact of dilution and nitrate to ammonium reduction, on the nitrate content of groundwater, thus overestimating the vulnerability index. Moreover, the SI method overestimates the impact of olive groves' land use type on the susceptibility index, thus resulting to a lower correlation with the observed nitrate concentrations.
Collapse
Affiliation(s)
| | - Konstantina N Katsanou
- Department of Water Resources and Ecosystems, IHE Delft, Westvest 7, Delft, 2611 AX, Netherlands.
| | | |
Collapse
|
21
|
Saba ED, Saba JM, Mendes TA, de Oliveira AE. Evaluating the impact of a cemetery on groundwater by multivariate analysis. Environ Monit Assess 2023; 195:270. [PMID: 36607465 PMCID: PMC9817448 DOI: 10.1007/s10661-022-10895-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 12/27/2022] [Indexed: 06/17/2023]
Abstract
Water analyses in conjunction with hydrological and geotechnical investigations were carried out to assess the potential for groundwater contamination from the decomposition of buried human bodies. Water samples were collected from 2007 to 2018 in three monitoring wells built within the cemetery area. Water quality was evaluated based on the determination of 25 analytical parameters (20 physical-chemical and 5 microbiological). Laboratory data reported by the local sewage water company for water collected in household cisterns located outside the cemetery area were also evaluated. Multivariate analysis showed a similar pattern between iron content, turbidity, and rainfall data collected at the rainfall station closest to the study area. This behavior is a direct consequence of soil leaching (oxisol). The physical characterization of the soil of the unsaturated area above the aquifer indicates that the absorption of body waste by the soil is favored, preventing surface contaminants from reaching the aquifer. This work also found that the water samples collected outside the cemetery area do not comply with the Brazilian limits for drinking water. In conclusion, water samples collected from monitoring wells located within the cemetery area have little to none impact on both subsurface and underground contamination.
Collapse
Affiliation(s)
- Elias D. Saba
- QUINOSAN, Laboratório Químico Ltd, SIG Qd 1, Lt. 495, Ed. Barao do Rio Branco, loja 07, Brasília, DF 70610-410 Brazil
| | - Jordana M. Saba
- QUINOSAN, Laboratório Químico Ltd, SIG Qd 1, Lt. 495, Ed. Barao do Rio Branco, loja 07, Brasília, DF 70610-410 Brazil
| | - Thiago A. Mendes
- Civil and Environmental Engineering Department, IFG, Av. Universitária Vereador Vagner da Silva Ferreira, Aparecida de Goiânia, GO 74968-755 Brazil
| | - Anselmo E. de Oliveira
- Laboratory of Theoretical and Computational Chemistry, Chemistry Department, UFG, Goiânia, GO 74690-900 Brazil
| |
Collapse
|
22
|
Dashti Z, Nakhaei M, Vadiati M, Karami GH, Kisi O. A literature review on pumping test analysis (2000-2022). Environ Sci Pollut Res Int 2023; 30:9184-9206. [PMID: 36454527 DOI: 10.1007/s11356-022-24440-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 11/23/2022] [Indexed: 06/17/2023]
Abstract
Accurate and precise values of hydrodynamic parameters are needed for groundwater modeling and management. Pumping test in the aquifer is the standard method to estimate the transmissivity, hydraulic conductivity, and storage coefficient as the key hydrodynamic parameters. Analytical solutions with curve matching and numerical modeling are two methods to estimate these parameters in the aquifer. Graphical analyses are commonly applied to time-drawdown/water table data which are time-consuming and approximate. Graphical type-curve methods as promising tools are used extensively in water resources studies, while applying these methods is still new in pumping test analysis. In the current study, the first effort based on our knowledge, we have reviewed the literature type-curve graphical methods in pumping test analysis. To achieve this goal, we reviewed and compared the journal articles regarding the characteristics and capabilities of the modeling process from 2000 to 2022. We have clustered the reviewed papers into graphical, modeling, and hybrid categories. Then, a comprehensive review of the selected papers was presented to delineate the highlight of every paper. This review could guide researchers in pumping test analysis. Also, we have presented various recommendations for future research to improve the quality of hydrodynamic parameter estimation.
Collapse
Affiliation(s)
- Zahra Dashti
- Department of Applied Geology, Faculty of Earth Sciences, Kharazmi University, Tehran, Iran
| | - Mohammad Nakhaei
- Department of Applied Geology, Faculty of Earth Sciences, Kharazmi University, Tehran, Iran
| | - Meysam Vadiati
- Hubert H. Humphrey Fellowship Program, Global Affairs, University of California, 10 College Park, Davis, CA, 95616, USA.
| | - Gholam Hossein Karami
- Department of Applied Geology, Faculty of Earth Sciences, Kharazmi University, Tehran, Iran
| | - Ozgur Kisi
- Department of Architecture and Civil Engineering, University of Applied Sciences Lübeck, 23562, Lübeck, Germany
- Department of Civil Engineering, Ilia State University, 0162, Tbilisi, Georgia
| |
Collapse
|
23
|
Boumaiza L, Walter J, Chesnaux R, Zahi F, Huneau F, Garel É, Stotler RL, Bordeleau G, Johannesson KH, Vystavna Y, Drias T, Re V, Knöller K, Stumpp C. Combined effects of seawater intrusion and nitrate contamination on groundwater in coastal agricultural areas: A case from the Plain of the El-Nil River (North-Eastern Algeria). Sci Total Environ 2022; 851:158153. [PMID: 35988595 DOI: 10.1016/j.scitotenv.2022.158153] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 08/08/2022] [Accepted: 08/16/2022] [Indexed: 06/15/2023]
Abstract
This study focuses on coastal aquifers subject to uncontrolled land use development by investigating the combined effects of seawater intrusion and nitrate contamination. The research is undertaken in a Mediterranean coastal agricultural area (Plain of the El-Nil River, Algeria), where water resources are heavily impacted by anthropogenic activities. A multi-tracer approach, integrating hydrogeochemical and isotopic tracers (δ2HH2O, δ18OH2O, δ15NNO3 and δ18ONO3), is combined with a hydrochemical facies evolution diagram, and a Bayesian isotope mixing model (MixSIAR) to assess seawater contamination with its inland intrusion, and distinguish the nitrate sources and their apportionment. Results show that seawater intrusion is circumscribed to the sector neighboring the Mediterranean Sea, with two influencing functions including classic inland intrusion through the aquifer, and upstream seawater impact through the river mouth connected to the Mediterranean Sea. Groundwater and surface water samples reveal nitrate concentrations above the natural baseline threshold, suggesting anthropogenic influence. Results from nitrate isotopic composition, NO3 and Cl concentrations, and the MixSIAR model show that nitrate concentrations chiefly originate from sewage and manure sources. Nitrate derived from the sewage is related to wastewater discharge, whereas nitrate derived from the manure is attributed to an excessive use of animal manure to fertilise agricultural areas. The dual negative impact of seawater intrusion and nitrate contamination degrades water quality over a large proportion of the study area. The outcomes of this study are expected to contribute to effective and sustainable water resources management in the Mediterranean coastal area. Furthermore, this study may improve scientists' ability to predict the combined effect of various anthropogenic stressors on coastal environments and help decision-makers elsewhere to prepare suitable environmental strategies for other regions currently undergoing an early stage of water resources deterioration.
Collapse
Affiliation(s)
- Lamine Boumaiza
- Université du Québec à Chicoutimi, Département des Sciences Appliquées, Saguenay, Québec G7H 2B1, Canada; Centre d'études sur les ressources minérales, Groupe de recherche Risque Ressource Eau, Saguenay, Québec G7H 2B1, Canada.
| | - Julien Walter
- Université du Québec à Chicoutimi, Département des Sciences Appliquées, Saguenay, Québec G7H 2B1, Canada; Centre d'études sur les ressources minérales, Groupe de recherche Risque Ressource Eau, Saguenay, Québec G7H 2B1, Canada
| | - Romain Chesnaux
- Université du Québec à Chicoutimi, Département des Sciences Appliquées, Saguenay, Québec G7H 2B1, Canada; Centre d'études sur les ressources minérales, Groupe de recherche Risque Ressource Eau, Saguenay, Québec G7H 2B1, Canada
| | - Faouzi Zahi
- Université Mohammed Seddik Ben Yahia, Département des Sciences de la Terre et de l'Univers, Jijel 18000, Algeria
| | - Frédéric Huneau
- Université de Corse Pascal Paoli, Département d'Hydrogéologie, Campus Grimaldi, Corte 20250, France; CNRS, UMR 6134 SPE, Corte 20250, France
| | - Émilie Garel
- Université de Corse Pascal Paoli, Département d'Hydrogéologie, Campus Grimaldi, Corte 20250, France; CNRS, UMR 6134 SPE, Corte 20250, France
| | - Randy L Stotler
- University of Waterloo, Department of Earth and Environmental Sciences, Waterloo, Ontario N2T 0A4, Canada
| | - Geneviève Bordeleau
- Institut national de la recherche scientifique, Centre Eau Terre Environnement, Québec, Québec G1K 9A9, Canada
| | - Karen H Johannesson
- University of Massachusetts Boston, School for the Environment, Boston, MA 02125, USA
| | - Yuliya Vystavna
- International Atomic Energy Agency, Isotope Hydrology Section, Vienna 1400, Austria
| | - Tarek Drias
- Université Mustapha Benboulaïd, Département de Géologie, Campus de Fesdiss, 05030 Batna, Algeria
| | - Viviana Re
- University of Pisa, Department of Earth Sciences, Pisa 56126, Italy
| | - Kay Knöller
- Helmholtz Centre for Environmental Research, Department of Catchment Hydrology, Halle, Saale 06120, Germany
| | - Christine Stumpp
- University of Natural Resources and Life Sciences, Institute of Soil Physics and Rural Water Management, Vienna 1190, Austria
| |
Collapse
|
24
|
Boumaiza L, Walter J, Chesnaux R, Huneau F, Garel É, Erostate M, Johannesson KH, Vystavna Y, Bougherira N, Bordeleau G, Stotler RL, Blarasin M, Gutiérrez M, Knöller K, Stumpp C. Multi-tracer approach to understand nitrate contamination and groundwater-surface water interactions in the Mediterranean coastal area of Guerbes-Senhadja, Algeria. J Contam Hydrol 2022; 251:104098. [PMID: 36404424 DOI: 10.1016/j.jconhyd.2022.104098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 10/20/2022] [Accepted: 10/21/2022] [Indexed: 06/16/2023]
Abstract
Implementing sustainable groundwater resources management in coastal areas is challenging due to the negative impacts of anthropogenic stressors and various interactions between groundwater and surface water. This study focuses on nitrate contamination and transport via groundwater-surface water exchange in a Mediterranean coastal area (Guerbes-Senhadja region, Algeria) that is heavily affected by anthropogenic activities. A multi-tracer approach, integrating hydrogeochemical and isotopic tracers (δ2HH2O, δ18OH2O, 3H, δ15NNO3 and δ18ONO3), is combined with a Bayesian isotope mixing model (MixSIAR) to (i) elucidate the nitrate sources and their apportionments in water systems, and (ii) describe potential interactions between groundwater and surface water. Results from nitrate isotopic composition and the MixSIAR model show that nitrate concentrations mainly originate from sewage and manure sources. Nitrate derived from the sewage is attributed to urban and rural wastewater discharge, whereas nitrate derived from the manure is related to animal manure used to fertilise agricultural areas. High apportionments of nitrate-based atmospheric precipitation are identified in groundwater and surface water; a finding that is specific to this study. The multi-origin stresses combined with evidence of interactions between surface water and groundwater contribute to negatively impacting large parts of the study coastal area. The outcomes of this study are expected to contribute to sustainable management of coastal ecosystems by drawing more attention towards groundwater use and protection. Furthermore, this study may improve scientists' ability to predict the behavior of anthropogenically impacted coastal ecosystems and help decision-makers elsewhere to prepare suitable environmental strategies for other coastal ecosystems currently undergoing an early stage of groundwater resources deterioration.
Collapse
Affiliation(s)
- Lamine Boumaiza
- University of Waterloo, Department of Earth and Environmental Sciences, Waterloo, Ontario N2T 0A4, Canada.
| | - Julien Walter
- Université du Québec à Chicoutimi, Département des Sciences Appliquées, Saguenay, Québec G7H 2B1, Canada; Centre d'études sur les ressources minérales, Groupe de recherche Risque Ressource Eau, Saguenay, Québec G7H 2B1, Canada
| | - Romain Chesnaux
- Université du Québec à Chicoutimi, Département des Sciences Appliquées, Saguenay, Québec G7H 2B1, Canada; Centre d'études sur les ressources minérales, Groupe de recherche Risque Ressource Eau, Saguenay, Québec G7H 2B1, Canada
| | - Frédéric Huneau
- Université de Corse Pascal Paoli, Département d'Hydrogéologie, Campus Grimaldi, Corte 20250, France; CNRS, UMR 6134 SPE, Corte 20250, France
| | - Émilie Garel
- Université de Corse Pascal Paoli, Département d'Hydrogéologie, Campus Grimaldi, Corte 20250, France; CNRS, UMR 6134 SPE, Corte 20250, France
| | - Mélanie Erostate
- Université de Corse Pascal Paoli, Département d'Hydrogéologie, Campus Grimaldi, Corte 20250, France; Institution Adour, Service gestion intégrée - Mission nappes profondes, Mont-de-Marsan 40000, France
| | - Karen H Johannesson
- University of Massachusetts Boston, School for the Environment, Boston, MA 02125, USA
| | - Yuliya Vystavna
- International Atomic Energy Agency, Isotope Hydrology Section, Vienna 1400, Austria
| | - Nabil Bougherira
- Université Badji Mokhtar, Département de Géologie, Campus de Sidi-Amar, Annaba 23005, Algeria
| | - Geneviève Bordeleau
- Institut national de la recherche scientifique, Centre Eau Terre Environnement, Québec, Québec G1K 9A9, Canada
| | - Randy L Stotler
- University of Waterloo, Department of Earth and Environmental Sciences, Waterloo, Ontario N2T 0A4, Canada
| | - Mónica Blarasin
- Universidad Nacional de Río Cuarto, Departamento de Geología, Río Cuarto, Córdoba X5804BYA, Argentina
| | - Mélida Gutiérrez
- Missouri State University, Department of Geography, Geology and Planning, Springfield, MO 65897, USA
| | - Kay Knöller
- Helmholtz Centre for Environmental Research, Department of Catchment Hydrology, Halle (Saale) 06120, Germany
| | - Christine Stumpp
- University of Natural Resources and Life Sciences, Institute of Soil Physics and Rural Water Management, Vienna 1190, Austria
| |
Collapse
|
25
|
Pérez-Indoval R, Rodrigo-Ilarri J, Cassiraga E, Rodrigo-Clavero ME. PWC-based evaluation of groundwater pesticide pollution in the Júcar River Basin. Sci Total Environ 2022; 847:157386. [PMID: 35850324 DOI: 10.1016/j.scitotenv.2022.157386] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 06/15/2022] [Accepted: 07/11/2022] [Indexed: 05/27/2023]
Abstract
Predicting pesticides' behavior in the environment is necessary to anticipate and minimize their adverse effects. Despite the use of pesticides in Spain is increasing, the implementation and use of predictive mathematical models is seldomly done in practice due to the lack of available data. In this original work, the Pesticide Root Zone Model version 5 (PRZM 5) mathematical model under the Pesticide in Water Concentration 1.52 (PWC) interface has been applied to model pesticide behavior in nine groundwater bodies located inside the Júcar River Basin (JRB) in Spain. Mathematical modeling allowed calculating the maximum concentration of pesticides after completing the calibration process. Bromacil, terbuthylazine, atrazine, desethyl-terbuthylazine, and terbumeton concentrations in groundwater were simulated between 2006 and 2019. Results show that the maximum pesticide concentration value on every well exceeds the current Spanish Maximum Concentration Limit (0.1 μg/L). PRZM 5 was able to reproduce pesticide concentration observations over time despite the limited amount of available data. This study contributes to assessing environmental risks caused by the use of pesticides inside the JRB and can potentially be applied in other areas of interest.
Collapse
Affiliation(s)
- Ricardo Pérez-Indoval
- Research Institute of Water and Environmental Engineering (IIAMA), Universitat Politècnica de València, Spain.
| | - Javier Rodrigo-Ilarri
- Research Institute of Water and Environmental Engineering (IIAMA), Universitat Politècnica de València, Spain.
| | - Eduardo Cassiraga
- Research Institute of Water and Environmental Engineering (IIAMA), Universitat Politècnica de València, Spain.
| | - María-Elena Rodrigo-Clavero
- Research Institute of Water and Environmental Engineering (IIAMA), Universitat Politècnica de València, Spain.
| |
Collapse
|
26
|
Yu X, Wu L, Yu X, Xin P. Tidal fluctuations relieve coastal seawater intrusion caused by groundwater pumping. Mar Pollut Bull 2022; 184:114231. [PMID: 36307948 DOI: 10.1016/j.marpolbul.2022.114231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 09/29/2022] [Accepted: 10/06/2022] [Indexed: 06/16/2023]
Abstract
Coastal aquifers are vulnerable to seawater intrusion and salinization due to groundwater pumping. Most research on salinization vulnerability and pumping rate optimization considers constant seaside boundary. However, tidal fluctuations may propagate through aquifers and affect pumping-induced seawater intrusion. We numerically tested the combined effects of tidal fluctuations and groundwater pumping on the variable-density groundwater flow and salt transport in aquifers with pumping wells close to the coast. The simulations showed that tidal fluctuations relieved seawater intrusion due to groundwater extraction. Stronger tidal fluctuation created larger upper saline plume which inhibited the seawater intrusion in the lower aquifer. Compared with those without tides, the tidal fluctuations with a tidal amplitude of 1 m could increase maximum pumping rate by 35.2 % and 28.7 % in flux- and head-controlled systems, respectively. These results suggest that combined impacts of tides and pumping should be considered in assessing seawater intrusion and designing more sophisticated pumping optimization.
Collapse
Affiliation(s)
- Xuan Yu
- School of Civil Engineering, Sun Yat-sen University, Guangzhou 510275, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China.
| | - Ling Wu
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, China
| | - Xiayang Yu
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, China
| | - Pei Xin
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, China; Yangtze Institute for Conservation and Development, Hohai University, Nanjing, China
| |
Collapse
|
27
|
Pacheco FAL, Lima VHS, Pissarra TCT, do Valle Junior RF, Silva MMAPM, de Melo MC, Valera CA, Moura JP, Fernandes LFS. A framework model to determine groundwater contamination risk based on a L-Matrix of aquifer vulnerability and hazardous activity indices. MethodsX 2022; 9:101858. [PMID: 36164431 DOI: 10.1016/j.mex.2022.101858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 09/09/2022] [Indexed: 11/24/2022] Open
Abstract
The method presented in this study assesses groundwater contamination risk using a L-Matrix system approach. The L-Matrix in this case is a cartesian diagram where the XX-axis represents aquifer vulnerability (0≤V≤1) determined by the well-known DRASTIC model, and the YY-axis represents the potential hazardousness (0≤H≤1) of an activity (infrastructural development, industrial activities, livestock and agriculture) measured by a European Commission approach. The diagram is divided into four regions, the boundaries of which are set to V = 0.5 and H = 0.5. Watersheds are represented in this diagram considering their V and H indices, and assigned a potential contamination risk if groundwater sites located within their limits show contaminant concentrations above legal limits for a given use. Depending on the region the watershed falls in the L-Matrix diagram, different management or contamination prevention actions are highlighted: activity development, activity monitoring, activity planning or activity inspecting. Watersheds located in the inspecting region and simultaneously evidencing contamination risk require immediate action, namely conditioning or even suspension of use. The method is tested in the Paraopeba River basin (Minas Gerais, Brazil), a densely industrialized basin that was recently affected by an iron-ore mine tailings dam break.The L-Matrix diagram highlights different groundwater susceptibility realities experienced by watersheds with different combinations of aquifer vulnerability and activity hazardousness, namely possibility for potential expansion of new hazardous activities but also the necessity to periodically inspect and eventually condition or suspend others. The L-Matrix diagram is likely a better approach to implement contamination prevention measures in watersheds, than the integrated contamination risk index used by most methods.
Collapse
|
28
|
Masangkay FR, Milanez GD, Dionisio JD, Ormita LAGL, Alvarez AV, Karanis P. Well water sources simultaneous contamination with Cryptosporidium and Acanthamoeba in East-Southeast Asia and Acanthamoeba spp. in biofilms in the Philippines. Sci Total Environ 2022; 837:155752. [PMID: 35533862 DOI: 10.1016/j.scitotenv.2022.155752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 04/05/2022] [Accepted: 05/02/2022] [Indexed: 06/14/2023]
Abstract
Cryptosporidium is the leading agent of waterborne parasitic protozoan outbreaks and is the second leading cause of infant mortality due to diarrhoea worldwide. Acanthamoeba spp. causes Acanthamoeba keratitis (AK) and a life-threatening condition known as granulomatous amoebic encephalitis (GAE). The present study aimed to assess the water quality of an indigenous and a rural community for waterborne parasitic protozoan contamination. Aquatic samples (n = 22) were processed by filtration of 500 mL portion through a 1.2 μm pore size glass microfiber filter and eluted for light microscopy, culture in non-nutrient agar, and PCR analysis. Overall, 36% (8/22) of the investigated aquatic samples were positive for either Cryptosporidium spp. oocysts (13%; 3/22) or Acanthamoeba spp., (36%; 8/22) or both (13%; 3/22). Cryptosporidium spp. oocysts were detected in 27% (3/11) of wet season samples only while Acanthamoeba spp. were detected in 18% (2/11) and 55% (6/11) of wet and dry season samples, respectively. Subsequently, molecular detection for Acanthamoeba species identified A. lenticulata and A. hatchetti with 98-99% BLAST similarity. This is the first report on the simultaneous contamination of Cryptosporidium and Acanthamoeba in well water sources in East-Southeast Asia, the first detection of Acanthamoeba spp. in biofilms in the Philippines, and the longest viability demonstrated for A. lenticulata in two-year-old water samples stored at room temperature.
Collapse
Affiliation(s)
- Frederick R Masangkay
- Department of Medical Technology, Faculty of Pharmacy, University of Santo Tomas, Manila 1008, Philippines.
| | - Giovanni D Milanez
- Department of Medical Technology, Faculty of Pharmacy, University of Santo Tomas, Manila 1008, Philippines
| | - Joseph D Dionisio
- Department of Medical Technology, Far Eastern University-Manila, Manila 1015, Philippines
| | - Luzelle Anne G-L Ormita
- Department of Psychology, Far Eastern University-Manila, Manila 1015, Philippines; Community Extension Services, Far Eastern University-Manila, Manila 1015, Philippines
| | - Abel V Alvarez
- Community Extension Services, Far Eastern University-Manila, Manila 1015, Philippines
| | - Panagiotis Karanis
- University of Cologne, Faculty of Medical and University Hospital Cologne, Cologne 50923, Germany; Medical School, Department of Basic and Clinical Science, University of Nicosia, Nicosia, 2417, Cyprus.
| |
Collapse
|
29
|
Zerfaß C, Lehmann R, Ueberschaar N, Sanchez-Arcos C, Totsche KU, Pohnert G. Groundwater metabolome responds to recharge in fractured sedimentary strata. Water Res 2022; 223:118998. [PMID: 36030668 DOI: 10.1016/j.watres.2022.118998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 08/01/2022] [Accepted: 08/16/2022] [Indexed: 06/15/2023]
Abstract
Understanding the sources, structure and fate of dissolved organic matter (DOM) in groundwater is paramount for the protection and sustainable use of this vital resource. On its passage through the Critical Zone, DOM is subject to biogeochemical conversions. Therefore, it carries valuable cross-habitat information for monitoring and predicting the stability of groundwater ecosystem services and assessing these ecosystems' response to fluctuations caused by external impacts such as climatic extremes. Challenges arise from insufficient knowledge on groundwater metabolite composition and dynamics due to a lack of consistent analytical approaches for long-term monitoring. Our study establishes groundwater metabolomics to decipher the complex biogeochemical transport and conversion of DOM. We explore fractured sedimentary bedrock along a hillslope recharge area by a 5-year untargeted metabolomics monitoring of oxic perched and anoxic phreatic groundwater. A summer with extremely high temperatures and low precipitation was included in the monitoring. Water was accessed by a monitoring well-transect and regularly collected for liquid chromatography-mass spectrometry (LC-MS) investigation. Dimension reduction of the resulting complex data set by principal component analysis revealed that metabolome dissimilarities between distant wells coincide with transient cross-stratal flow indicated by groundwater levels. Time series of the groundwater metabolome data provides detailed insights into subsurface responses to recharge dynamics. We demonstrate that dissimilarity variability between groundwater bodies with contrasting aquifer properties coincides with recharge dynamics. This includes groundwater high- and lowstands as well as recharge and recession phases. Our monitoring approach allows to survey groundwater ecosystems even under extreme conditions. Notably, the metabolome was highly variable lacking seasonal patterns and did not segregate by geographical location of sampling wells, thus ruling out vegetation or (agricultural) land use as a primary driving factor. Patterns that emerge from metabolomics monitoring give insight into subsurface ecosystem functioning and water quality evolution, essential for sustainable groundwater use and climate change-adapted management.
Collapse
Affiliation(s)
- Christian Zerfaß
- Department of Bioorganic Analytics, Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University, Jena, Germany
| | - Robert Lehmann
- Department of Hydrogeology, Institute of Geosciences, Friedrich Schiller University, Jena, Germany
| | - Nico Ueberschaar
- Mass Spectrometry Platform, Faculty for Chemistry and Earth Sciences, Friedrich Schiller University, Jena, Germany
| | - Carlos Sanchez-Arcos
- Department of Bioorganic Analytics, Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University, Jena, Germany
| | - Kai Uwe Totsche
- Department of Hydrogeology, Institute of Geosciences, Friedrich Schiller University, Jena, Germany
| | - Georg Pohnert
- Department of Bioorganic Analytics, Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University, Jena, Germany.
| |
Collapse
|
30
|
Fitzhenry E, Martel R, Robert T. Foam injection for enhanced recovery of diesel fuel in soils: Sand column tests monitored by CT scan imagery. J Hazard Mater 2022; 434:128777. [PMID: 35462124 DOI: 10.1016/j.jhazmat.2022.128777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 03/08/2022] [Accepted: 03/22/2022] [Indexed: 06/14/2023]
Abstract
The use of surfactant foam for the remediation of diesel fuel, a Light Non-Aqueous Phase Liquid (LNAPL), was investigated in sand column experiments using X-ray Computed Tomography (CT). A preliminary series of tests were carried out on six surfactant candidates in order to measure their physical properties, including critical micelle concentrations and interfacial tensions (IFT) with the LNAPL. Batch tests for foam stability were carried out with and without added LNAPL, in order to measure the half-life of foam columns produced with each surfactant candidate. Foam flow-rate co-injection tests were carried out for each surfactant candidate in 405 cm3 sand columns contaminated with LNAPL at residual saturation. These tests revealed that a 1:1 mixture of sodium dodecyl sulfate and cocamidopropyl betaine, injected at a total volumetric flow-rate (Qfoam) of 45 mL/min, resulted in successful generation and propagation of foam within the contaminated porous medium. Finally, two sand column tests, carried out respectively under high- and low-pressure conditions, were imaged with a CT-scanner in order to compare and contrast foam morphology evolution as well as the LNAPL desaturation dynamics involved in both scenarios. The saturation profiles extracted from CT images provided valuable new insights.
Collapse
Affiliation(s)
- Emily Fitzhenry
- Centre Eau Terre Environnement, Institut national de la recherche scientifique (INRS), 490 rue de la Couronne, Québec, QC G1K 9A9, Canada
| | - Richard Martel
- Centre Eau Terre Environnement, Institut national de la recherche scientifique (INRS), 490 rue de la Couronne, Québec, QC G1K 9A9, Canada.
| | - Thomas Robert
- Centre Eau Terre Environnement, Institut national de la recherche scientifique (INRS), 490 rue de la Couronne, Québec, QC G1K 9A9, Canada
| |
Collapse
|
31
|
Esfandiari A, Abbasi S, Peely AB, Mowla D, Ghanbarian MA, Oleszczuk P, Turner A. Distribution and transport of microplastics in groundwater (Shiraz aquifer, southwest Iran). Water Res 2022; 220:118622. [PMID: 35613485 DOI: 10.1016/j.watres.2022.118622] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 04/07/2022] [Accepted: 05/13/2022] [Indexed: 06/15/2023]
Abstract
Despite the significance of groundwater to the hydrological cycle and as a source of potable water, very little information exists on microplastics (MPs) in this environment. In the present study, MPs have been determined in ten well samples obtained from an alluvial aquifer in a semi-arid region (Shiraz, Iran) following filtration, digestion and inspection under a binocular microscope. A total of 96 MPs were identified, and concentrations ranged from 0.1 to 1.3 MP L-1 (mean and median = 0.48 and 0.43 MP L-1, respectively) and exhibited a complex distribution across the area that reflected differences in land use and local hydrology and geology. The majority of MPs (about 70%) were fibres of ≤ 500 μm in length, but fragments and films were present at some sites, and the dominant polymers were polystyrene, polyethylene and polyethylene terephthalate. Coupling meteorological and water table monitoring data from the regional water organization and published information on aquifer hydrology, we estimate a lag time from precipitation to water table intrusion of between one and five months and groundwater velocity flows of between 0.01 and 0.07 m d-1. Although the extent of retardation of MPs within the pores of groundwater is unknown, by considering empirical data and theoretical predictions on particle flow through porous media in the literature we surmise that MP residence times in the aquifer are likely to range from years to decades, thereby impeding any clear means of source identification. Nevertheless, and more generally, the consumption of potable groundwater may make to a contribution to MP exposure through ingestion.
Collapse
Affiliation(s)
- Atefeh Esfandiari
- Environmental Research Centre in Petroleum and Petrochemical Industries, Department of Chemical Engineering, School of Chemical and Petroleum Engineering, Shiraz University, Shiraz, Iran
| | - Sajjad Abbasi
- Department of Earth Sciences, College of Science, Shiraz University, Shiraz 71454, Iran; Department of Radiochemistry and Environmental Chemistry, Faculty of Chemistry, Maria Curie-Skłodowska University, Lublin 20-031, Poland.
| | - Ahmad Behrouj Peely
- Department of Earth Sciences, College of Science, Shiraz University, Shiraz 71454, Iran
| | - Dariush Mowla
- Environmental Research Centre in Petroleum and Petrochemical Industries, Department of Chemical Engineering, School of Chemical and Petroleum Engineering, Shiraz University, Shiraz, Iran
| | | | - Patryk Oleszczuk
- Department of Radiochemistry and Environmental Chemistry, Faculty of Chemistry, Maria Curie-Skłodowska University, Lublin 20-031, Poland
| | - Andrew Turner
- School of Geography, Earth and Environmental Sciences, University of Plymouth, Plymouth PL4 8AA, United Kingdom
| |
Collapse
|
32
|
Julián E LL, de Melo C, A C F S. Groundwater discharge locally shapes the rocky shore macroinvertebrate community in South-Southwest Portugal. Mar Environ Res 2022; 179:105672. [PMID: 35717773 DOI: 10.1016/j.marenvres.2022.105672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 04/22/2022] [Accepted: 05/31/2022] [Indexed: 06/15/2023]
Abstract
Groundwater discharge is an essential process in the functioning of coastal aquatic ecosystems due to its significant role in nutrient cycling, geochemical mass balances and primary productivity. However, the occurrence patterns, importance, and effects of this discharge on rocky shores communities remain largely unknown. We assessed the importance of groundwater discharge into the highly ecologically important intertidal ecosystems. We compared the benthic macroinvertebrate composition and abundance between discharge and no-discharge sites, replicated for five shores in South and Southwest Portugal. This robust replicated feature across shores and regions is a particularly novel contribution to the field. Groundwater discharge significantly affected the biological communities' abundance across all shores, but not biodiversity patterns. The algae Enteromorpha sp., snail Melaraphe neritoides and lichen Verrucaria maura can potentially be used as bioindication tools for shifts in groundwater discharge quantity and qualitative patterns. Our study validates the importance of this commonly overlooked local disturbance factor in regulating intertidal communities.
Collapse
Affiliation(s)
- Londoño-Londoño Julián E
- CERIS, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001, Lisboa, Portugal.
| | - Condesso de Melo
- CERIS, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001, Lisboa, Portugal.
| | - Silva A C F
- CERIS, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001, Lisboa, Portugal; Departamento de Engenharia Civil, Arquitectura e Georrecursos, Instituto Superior Técnico, Universidade de Lisboa, Bobadela, Portugal; Departamento de Engenharia e Ciências Nucleares (DECN), Instituto Superior Técnico, Universidade de Lisboa, Bobadela, Portugal.
| |
Collapse
|
33
|
Atoui M, Agoubi B. Assessment of groundwater vulnerability and pollution risk using AVI, SPI, and RGPI indexes: applied to southern Gabes aquifer system, Tunisia. Environ Sci Pollut Res Int 2022; 29:50881-50894. [PMID: 35239122 DOI: 10.1007/s11356-022-19309-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 02/15/2022] [Indexed: 06/14/2023]
Abstract
Southern Gabes aquifer is part of coastal Jeffara plain located in southeastern Tunisia. It consists a semi-arid area in which groundwater is the main source to water supply for several socio-economic sectors. Southern Gabes aquifer suffers from excessive abstraction and heavy anthropogenic pressures that make local groundwater resources threatened by pollution risks. This study aims to assess groundwater vulnerability, evaluate, and delineate groundwater risk regions. For this, a 17 water samples were carried out in the study area and chemical compositions were analyzed. A well-known AVI model has been used to assess aquifer vulnerability and new algorithms of sensitivity to pollution index (PSI) and risk groundwater to pollution index (RGPI) were implemented and used to assess, classify, and map groundwater pollution risk. Results reveal that study area suffers from high risk. Forty one percent of the total surface of study area has a very high risk. Nonetheless, only 30% of study area has a low to insignificant risk to pollution which necessitates taking severe precautions to protect the southern Gabes aquifer system. The method used in this study seems giving more precise results compared to conventional approaches. Moreover, this method allows assessing the pollution risk with flexible and reliable algorithm even with limited dataset. Hence, the poor natural protective capacity of study area needs a rapid intervention by local authorities in order to develop proactive solutions to protect and preserve groundwater resources from pollution risks and establish a long-term program for groundwater resources sustainable development.
Collapse
Affiliation(s)
- Mounir Atoui
- Higher Institute of Water Sciences and Techniques, University of Gabes, Gabes, Tunisia
- Applied Hydro-Sciences Research Laboratory, Gabes, Tunisia
| | - Belgacem Agoubi
- Higher Institute of Water Sciences and Techniques, University of Gabes, Gabes, Tunisia.
- Applied Hydro-Sciences Research Laboratory, Gabes, Tunisia.
| |
Collapse
|
34
|
Wei KH, Ma J, Xi BD, Yu MD, Cui J, Chen BL, Li Y, Gu QB, He XS. Recent progress on in-situ chemical oxidation for the remediation of petroleum contaminated soil and groundwater. J Hazard Mater 2022; 432:128738. [PMID: 35338938 DOI: 10.1016/j.jhazmat.2022.128738] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 02/09/2022] [Accepted: 03/16/2022] [Indexed: 06/14/2023]
Abstract
Accidental oil leaks and spills can often result in severe soil and groundwater pollution. In situ chemical oxidation (ISCO) is a powerful and efficient remediation technology. In this review, the applications and recent advances of three commonly applied in-situ oxidants (hydrogen peroxide, persulfate, and permanganate), and the gap in remediation efficiency between lab-scale and field-scale applications is critically assessed. Feasible improvements for these measures, especially solutions for the 'rebound effect', are discussed. The removal efficiencies reported in 108 research articles related to petroleum-contaminated soil and groundwater were analyzed. The average remediation efficiency of groundwater (82.7%) by the three oxidants was higher than that of soil (65.8%). A number of factors, including non-aqueous phase liquids, adsorption effect, the aging process of contaminants, low-permeability zones, and vapor migration resulted in a decrease in the remediation efficiency and caused the residual contaminants to rebound from 19.1% of the original content to 57.7%. However, the average remediation efficiency of ISCO can be increased from 40.9% to 75.5% when combined with other techniques. In the future, improving the utilization efficiency of reactive species and enhancing the contact efficiency between oxidants and petroleum contaminants will be worthy of attention. Multi-technical combinations, such as the ISCO coupled with phase-transfer, viscosity control, controlled release or natural attenuation, can be effective methods to solve the rebound problem.
Collapse
Affiliation(s)
- Kun-Hao Wei
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Jie Ma
- State Key Laboratory of Heavy Oil Processing, Beijing Key Lab of Oil & Gas Pollution Control, China University of Petroleum-Beijing, Beijing 102249, China
| | - Bei-Dou Xi
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Min-Da Yu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Jun Cui
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Bao-Liang Chen
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Yang Li
- Key Laboratory of Water and Sediment Sciences of Ministry of Education, State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Qing-Bao Gu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Xiao-Song He
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
| |
Collapse
|
35
|
Viaroli S, Lancia M, Re V. Microplastics contamination of groundwater: Current evidence and future perspectives. A review. Sci Total Environ 2022; 824:153851. [PMID: 35176372 DOI: 10.1016/j.scitotenv.2022.153851] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 01/13/2022] [Accepted: 02/09/2022] [Indexed: 06/14/2023]
Abstract
Groundwater is a primary water source which supplies more than 2 billion people. The increasing population and urbanization of rural areas stresses and depletes the groundwater systems, reducing the groundwater quality. Among the emerging contaminants, microplastics (MPs) are becoming an important issue due to their persistency in the environment. Seepage through the pores and fractures as well as the interaction with colloidal aggregates can partially affect the MPs dynamics in the subsoil, making the detection of the MPs in the groundwater systems challenging. Based on literature, a critical analysis of MPs in groundwater is presented from a hydrogeological point of view. In addition, a review of the MPs data potentially affecting the groundwater systems are included. MPs in groundwater may have several sources, including the atmosphere, the interaction with surface water bodies, urban infrastructures, or agricultural soils. The characterization of both the groundwater dynamics and the heterogeneity of MPs is suggested, proposing a new framework named "Hydrogeoplastic Model". MPs detection methods aimed at characterizing the smaller fragments are necessary to clarify the fate of these contaminants in the aquifers. This review also aims to support future research on MP contamination in groundwater, pointing out the current knowledge and the future risks which could affect groundwater resources worldwide.
Collapse
Affiliation(s)
- Stefano Viaroli
- Sciences Department, Roma Tre University, Largo S. L. Murialdo 1, 00146 Rome, Italy.
| | - Michele Lancia
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Xueyuan Road, 1088, Shenzhen, China; State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Xueyuan Road, 1088, Shenzhen, China
| | - Viviana Re
- Department of Earth Sciences, University of Pisa, Via S. Maria 53, 56126 Pisa, Italy
| |
Collapse
|
36
|
Cho MY, Oh MS, Annable MD, Kim H. Aquifer remediation using surfactant-enhanced gas sparging applied to target the contaminant source. J Contam Hydrol 2022; 248:104002. [PMID: 35395442 DOI: 10.1016/j.jconhyd.2022.104002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Revised: 03/16/2022] [Accepted: 03/19/2022] [Indexed: 06/14/2023]
Abstract
The surfactant-enhanced gas sparging process designed to specifically target the source zone of an organic contaminant in an aquifer with minimal usage of injected additives was investigated using a physical model. Aqueous solutions of the anionic surfactant Sodium dodecylbenzne sulfonate (SDBS) and/or the thickener Sodium carboxymethylcellulose (SCMC) were applied in a contaminated horizontal layer in the simulated laboratory aquifer model followed by gas sparging. Fluorescein sodium salt (FSS) was added to the SDBS/SCMC solutions and represented the organic contaminant. Air and ozone were injected to generate gas sparging. A modified surfactant-enhanced ozone sparging method was also tested by applying additional air venting ports installed in the aquifer above the gas injection zone. Both non-aqueous phase liquid (NAPL) and water-dissolved TCA were applied to the SDBS-applied region to evaluate the removal of contaminants during gas sparging. A significant expansion of the de-saturated zone for the SDBS-applied region was observed during air sparging. During ozone sparging, the fluorescence by FSS in the SDBS-applied layer disappeared over a much wider range than that of the control experiment. SCMC application enhanced the performance of the SDBS-applied gas sparging process. The TCA mass removed by volatilization during air sparging from the SDBS-applied layer was 2.3 times the application in the absence of SDBS. Among five regions of injected NAPL contamination located above the single gas injection port, and during 2 h of ozone sparging, with SDBS applied, more than 50% of fluorescence in the NAPL was removed, whereas under the same conditions with no SDBS applied, less than 30% was removed. Diverted gas flow through the venting ports installed in the aquifer model induced a horizontally expanded oxidative reaction zone during ozone sparging. This study demonstrates enhanced gas sparging performance for the removal of contaminants from the aquifer with limited usage of additives applied specifically to the source zone.
Collapse
Affiliation(s)
- Moon-Young Cho
- Dept. of Environmental Sciences and Biotechnology, Hallym University, Chuncheon, Gangwon-do 24252, Republic of Korea
| | - Min-Su Oh
- Dept. of Environmental Sciences and Biotechnology, Hallym University, Chuncheon, Gangwon-do 24252, Republic of Korea
| | - Michael D Annable
- Dept. of Environmental Engineering Sciences, University of Florida, Gainesville, FL 32611, USA
| | - Heonki Kim
- Dept. of Environmental Sciences and Biotechnology, Hallym University, Chuncheon, Gangwon-do 24252, Republic of Korea.
| |
Collapse
|
37
|
Chakraborty A, Suchy M, Hubert CRJ, Ryan MC. Vertical stratification of microbial communities and isotope geochemistry tie groundwater denitrification to sampling location within a nitrate-contaminated aquifer. Sci Total Environ 2022; 820:153092. [PMID: 35038526 DOI: 10.1016/j.scitotenv.2022.153092] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 12/29/2021] [Accepted: 01/09/2022] [Indexed: 06/14/2023]
Abstract
Nitrate pollution is a major threat to groundwater quality in agricultural areas. Natural attenuation of nitrate in contaminated aquifers is mediated by denitrifying microbial populations in anoxic environments. Vertical distribution of denitrifying microbial communities in aquifers is greatly influenced by groundwater redox conditions, local hydrogeological parameters, and seasonal variability in groundwater flow and recharge. In this study, we investigated groundwater geochemistry and the composition of bacterial and archaeal communities with increasing depth in a shallow nitrate-contaminated aquifer in British Columbia, Canada. High-resolution passive diffusion sampling was conducted to collect groundwater at 10-cm intervals from 4 to 20 m below ground surface (mbgs) in the aquifer. Geochemical analyses of major ions indicated a general shift in the groundwater chemistry below 16 mbgs including decreasing chloride concentrations that suggest two-end member mixing of shallow and deep groundwater with different chemistries. A redoxcline was further observed within a 2 m transition zone at 18-20 mbgs characterized by sharp declines in nitrate concentrations and increases in sulfate and total inorganic carbon. Excursions in δ15N-NO3- and δ18O-NO3- in the same depth interval are consistent with denitrification, and a concomitant decrease in δ34S-SO42- suggested that denitrification was coupled to sulfide or sulfur oxidation. Microbial communities within this depth interval were significantly dissimilar to those above and below, featuring putative lithotrophic denitrifying bacteria belonging to the genera Sulfurifustis, Sulfuritalea and Sulfuricella. These lineages were detected in greatest abundance at 19 mbgs while the abundances of putative heterotrophic sulfate-reducing bacteria belonging to the genus Desulfosporosinus were greatest at 20 mbgs. In addition to help distinguish denitrification from mixing-induced changes in groundwater chemistry, the above observed vertical stratification of the microbial key players connects nitrate removal to the locations of the aquifer sampled.
Collapse
Affiliation(s)
- Anirban Chakraborty
- Department of Biological Sciences, University of Calgary, Calgary, Alberta, Canada.
| | - Martin Suchy
- Environment and Climate Change Canada, Vancouver, British Columbia, Canada
| | - Casey R J Hubert
- Department of Biological Sciences, University of Calgary, Calgary, Alberta, Canada
| | - M Cathryn Ryan
- Department of Geoscience, University of Calgary, Calgary, Alberta, Canada
| |
Collapse
|
38
|
Liu R, Yang X, Xie J, Li X, Zhao Y. Steam migration and temperature distribution in aquifers during remediation using steam injection. J Contam Hydrol 2022; 245:103942. [PMID: 34995934 DOI: 10.1016/j.jconhyd.2021.103942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 11/18/2021] [Accepted: 12/26/2021] [Indexed: 06/14/2023]
Abstract
Steam injection technology is commonly used to rapidly remove volatile and semi-volatile organic pollutants in aquifers, and its remediation effect is highly related to steam migration and temperature distribution. However, systematic studies on steam migration and temperature distribution across different types of aquifers are lacking. In this study, the steam migration and temperature distribution in an aquifer were investigated through a series of two-dimensional sandbox experiments with different groundwater velocities, steam injection flow rates, and stratigraphic structures. The experimental results indicated that the temperature distribution in the aquifer was related to the formation permeability and steam injection flow rate. When the hydraulic conductivity of the aquifer was lower than 10-3 cm·s-1, the heating zone in the aquifer had an H-shaped distribution, and when it was higher than 10-2 cm·s-1, the heating zone had a V-shaped distribution for a high steam injection flow rate (1 kgh-1), and an H-shaped distribution for a low injection flow rate (0.5 kgh-1). Under the same injection steam flow rate, the total area of the heating zone in the aquifers with different media was in the following order of sand particle size: coarse sand > fine sand > medium sand. Owing to the heat pipe and heat dispersion effects, the heating zone area in the fine sand aquifer was larger than that of the medium sand aquifer. Groundwater velocity did not affect the area of the heating zone. With the increase in groundwater velocity, the heating zone expanded downstream. In layered heterogeneous aquifers, the upper fine and lower coarse structures formed a steam-blocking interface, resulting in steam accumulation and temperature increase in the lower layer. These findings are significant for improving our understanding of steam migration and temperature distribution in aquifers, leading to an improved design and prediction of the steam remediation required for mitigating aquifer pollution.
Collapse
Affiliation(s)
- Ruxue Liu
- Key Laboratory of Groundwater Resources and Environment of Ministry of Education, College of New Energy and Environment, Jilin University, Changchun 130021, China; Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun 130021, China; National and Local Joint Engineering Laboratory for Petrochemical Contaminated Site Control and Remediation Technology, Jilin University, Changchun 130021, China
| | - Xinru Yang
- Key Laboratory of Groundwater Resources and Environment of Ministry of Education, College of New Energy and Environment, Jilin University, Changchun 130021, China; Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun 130021, China; National and Local Joint Engineering Laboratory for Petrochemical Contaminated Site Control and Remediation Technology, Jilin University, Changchun 130021, China
| | - Jiayin Xie
- Key Laboratory of Groundwater Resources and Environment of Ministry of Education, College of New Energy and Environment, Jilin University, Changchun 130021, China; Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun 130021, China; National and Local Joint Engineering Laboratory for Petrochemical Contaminated Site Control and Remediation Technology, Jilin University, Changchun 130021, China
| | - Xiaoyu Li
- Key Laboratory of Groundwater Resources and Environment of Ministry of Education, College of New Energy and Environment, Jilin University, Changchun 130021, China; Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun 130021, China; National and Local Joint Engineering Laboratory for Petrochemical Contaminated Site Control and Remediation Technology, Jilin University, Changchun 130021, China
| | - Yongsheng Zhao
- Key Laboratory of Groundwater Resources and Environment of Ministry of Education, College of New Energy and Environment, Jilin University, Changchun 130021, China; Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun 130021, China; National and Local Joint Engineering Laboratory for Petrochemical Contaminated Site Control and Remediation Technology, Jilin University, Changchun 130021, China.
| |
Collapse
|
39
|
Ouzerbane Z, Loulida S, El Hmaidi A, Essahlaoui A, Boughalem M, Ousmana H, Berrada M. Study of the salinity of groundwater in the HAHA syncline by the Kohonen self-organized classification (Essaouira, Morocco). Environ Sci Pollut Res Int 2022; 29:13592-13611. [PMID: 34591250 DOI: 10.1007/s11356-021-16598-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 09/13/2021] [Indexed: 06/13/2023]
Abstract
The coastal aquifer of the Essaouira syncline (Morocco) was studied to identify the main processes at the origin of the salinization of groundwater. In fact, a multicriteria analysis approach on hydrochemical data and physicochemical parameters of the Plio-Pleistocene aquifer was used to understand their spatio-temporal variation and their origins. Currently, integrated water resource management has become paramount to both local, regional, national, and international. This management is favored by extreme hydrological events (droughts or floods) which can have direct influences on human, economic, and political aspects. Appropriate management of a resource requires its evaluation. The statistical study by Kohonen's self-organized classification (SOM) of hydrochemical data for the years 1995 and 2009 is used to process 47 samples distributed over the Haha region; it showed an evolution of the values of the parameters. Physico-chemical is a function of time and space with an increase in the values of the parameters, from the center of the study area towards the southwest.
Collapse
Affiliation(s)
- Zakaria Ouzerbane
- Water Science and Environmental Engineering team, Department of Geology, Faculty of Science, Moulay Ismail University, Zitoune, 11201, Meknes, BP, Morocco.
| | - Soumia Loulida
- Laboratory: Water, Biodiversity and Climate Change, Faculty of Science, Department of Biology, Cadi Ayyad University, P.O. Box 2390, 40000, Semlalia, Marrakesh, Morocco
| | - Abdellah El Hmaidi
- Water Science and Environmental Engineering team, Department of Geology, Faculty of Science, Moulay Ismail University, Zitoune, 11201, Meknes, BP, Morocco
| | - Ali Essahlaoui
- Water Science and Environmental Engineering team, Department of Geology, Faculty of Science, Moulay Ismail University, Zitoune, 11201, Meknes, BP, Morocco
| | - Mostafia Boughalem
- Ctr UnivAinTemouchent, Laboratory of Applied Hydrology and environment/DGRSDT, BP 284-, 46000, Ain Temouchent, Algeria
| | - Habiba Ousmana
- Water Science and Environmental Engineering team, Department of Geology, Faculty of Science, Moulay Ismail University, Zitoune, 11201, Meknes, BP, Morocco
| | - Mohamed Berrada
- Mathematical and Computer Modeling Laboratory (LM2I), ENSAM of Meknes, Moulay Ismail University, 15290, Al Mansour, 50000, Meknes, BP, Morocco
| |
Collapse
|
40
|
Gómez Martín E, Máñez Costa M, Egerer S, Schneider UA. Assessing the long-term effectiveness of Nature-Based Solutions under different climate change scenarios. Sci Total Environ 2021; 794:148515. [PMID: 34218144 PMCID: PMC8434435 DOI: 10.1016/j.scitotenv.2021.148515] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 06/13/2021] [Accepted: 06/14/2021] [Indexed: 05/14/2023]
Abstract
Nature-Based Solutions (NBS) have been gaining importance in many European cities to reduce floods' impacts. However, evidence of their effectiveness in reducing the impacts of droughts in rural areas are scarce. Besides, ignoring future climate conditions or the specific socio-economic context in which NBS is applied could decrease their long-term effectiveness. This study aims to stress the importance of developing scientifically-based and customised information on climate change impacts as a precondition for designing and implementing NBS. For that, a System Dynamic model was developed to analyse and understand the dynamic behaviour of NBS responding to different scenarios of climate change and socio-economic contexts. This article recognises the proactive involvement at all societal levels as an essential component to enhance and maintain ecosystem resilience and, therefore, NBS1effectiveness. Thus, participatory modelling activities were carried out to engage stakeholders in the model development process to obtain relevant bottom-up information and organise stakeholders' collective knowledge in a graphical structure that captures the system's main dynamics. The Medina del Campo Groundwater Body was used as a frame for the analysis. The study results highlight the need for developing scientifically-based and customised information on the impacts of climate change on NBS as an essential precondition to maintain their long-term effectiveness.
Collapse
Affiliation(s)
- Eulalia Gómez Martín
- Climate Service Center Germany (GERICS), Helmholtz Center, Chilehaus, Eingang B Fischertwiete 1, 20095 Hamburg, Germany.
| | - María Máñez Costa
- Climate Service Center Germany (GERICS), Helmholtz Center, Chilehaus, Eingang B Fischertwiete 1, 20095 Hamburg, Germany.
| | - Sabine Egerer
- Climate Service Center Germany (GERICS), Helmholtz Center, Chilehaus, Eingang B Fischertwiete 1, 20095 Hamburg, Germany.
| | - Uwe A Schneider
- Research Unit Sustainability and Global Change (FNU), University of Hamburg (UHH), Grindelberg 5, 20144 Hamburg, Germany.
| |
Collapse
|
41
|
Ekanem AM, Akpan AE, George NJ, Thomas JE. Appraisal of protectivity and corrosivity of surficial hydrogeological units via geo-sounding measurements. Environ Monit Assess 2021; 193:718. [PMID: 34642861 DOI: 10.1007/s10661-021-09518-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 09/30/2021] [Indexed: 06/13/2023]
Abstract
The surface resistivity method was used to appraise the protectivity of hydrogeological units and corrosivity of the top soil in Obot Akara County, southern Nigeria. A total of 28 vertical electrical sounding (VES) was undertaken in the area using the Schlumberger electrode configuration. The results of the VES data interpretation reveal 3 to 4 geoelectric layers in the study area. The resistivity of the first layer interpreted as the Motley top soil ranges from 34.7 to 929.7 Ωm with a mean value of 381.1 Ωm. The third layer, with a resistivity range of 99.4 to 2716.7 Ωm, constitutes the aquifer unit in most communities in the area, with an average thickness of 58.3 m, while the fourth layer penetrated in most communities has a resistivity range of 216.1 to 1475.7 Ωm with a mean value of 657.5 Ωm. The longitudinal conductance and resistivity reflection coefficient of the aquifer protective layers vary from 0.04 to 0.76 mhos and - 0.74 to 0.93, respectively. Analysis of these results shows that 89.3% of the hydrogeological units in the area is weakly/poorly protected, 10.7% has moderate to good protection, while 85.7% of the top soil at the sounding stations is noncorrosive and 14.3% is slightly to moderately corrosive. The implication of these results is that most of the hydrogeological units in the area are likely prone to contamination in particular by some ferrugenized materials from the overlying layers. Also, underground metal storage tanks and galvanized and steel pipes can be buried in the topmost layer in most communities in the area without any risk of failure. Although these findings are very promising especially in groundwater management and exploitation in the area, hydrogeochemical and microbiological analyses of groundwater samples from available boreholes are recommended to corroborate the results.
Collapse
Affiliation(s)
- Aniekan M Ekanem
- Department of Physics, Geophysics Research Group (GRG), Akwa Ibom State University, Mkpat Enin, Nigeria.
| | - Anthony E Akpan
- Department of Physics, Applied Geophysics Programme, University of Calabar, Calabar, Nigeria
| | - Nyakno J George
- Department of Physics, Geophysics Research Group (GRG), Akwa Ibom State University, Mkpat Enin, Nigeria
| | - Jewel E Thomas
- Department of Physics, Geophysics Research Group (GRG), Akwa Ibom State University, Mkpat Enin, Nigeria
| |
Collapse
|
42
|
Ding L, Song J, Huang D, Lei J, Li X, Sun J. Simultaneous removal of nitrate and hexavalent chromium in groundwater using indigenous microorganisms enhanced by emulsified vegetable oil: Interactions and remediation threshold values. J Hazard Mater 2021; 406:124708. [PMID: 33296759 DOI: 10.1016/j.jhazmat.2020.124708] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Revised: 11/07/2020] [Accepted: 11/26/2020] [Indexed: 06/12/2023]
Abstract
Combined pollution in groundwater has become increasingly serious. Adding emulsified vegetable oil to an aquifer is an effective method to remediate multiple pollutants. However, the efficiency and threshold values for the remediation of groundwater contaminated by both nitrate and hexavalent chromium (Cr(VI)) stimulated by emulsified vegetable oil remain unclear. In this study, emulsified vegetable oil was used for the first time to simultaneously remediate nitrate and Cr(VI) in groundwater. The results suggested that the addition of emulsified vegetable oil could effectively remediate nitrate and Cr(VI), and there were interplay effects between nitrate and Cr(VI). Nitrate promoted Cr(VI) removal, while Cr(VI) inhibited nitrate reduction. The remediation thresholds for nitrate and Cr(VI) alone were 1600 mg/L and 10 mg/L, respectively (emulsified vegetable oil = 7 g/L). For combined pollution, the remediation threshold values were 868.10 mg/L for nitrate and 12.43 mg/L for Cr(VI) (emulsified vegetable oil = 7 g/L). The dose of emulsified vegetable oil played an important role in the threshold value. When the concentration of emulsified vegetable oil was 10.8 g/L, the maximum threshold values were 1379.79 mg/L for nitrate and 12.67 mg/L for Cr(VI). When the pollutant concentration was below the threshold value, the contaminant could be completely removed.
Collapse
Affiliation(s)
- Linjie Ding
- Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, School of Environment, Henan Normal University, Xinxiang, Henan 453007, PR China.
| | - Jibin Song
- Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, School of Environment, Henan Normal University, Xinxiang, Henan 453007, PR China
| | - Dongxia Huang
- Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, School of Environment, Henan Normal University, Xinxiang, Henan 453007, PR China
| | - Jiansen Lei
- Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, School of Environment, Henan Normal University, Xinxiang, Henan 453007, PR China
| | - Xiang Li
- Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, School of Environment, Henan Normal University, Xinxiang, Henan 453007, PR China
| | - Jianhui Sun
- Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, School of Environment, Henan Normal University, Xinxiang, Henan 453007, PR China
| |
Collapse
|
43
|
He C, Zhang B, Lu J, Qiu R. A newly discovered function of nitrate reductase in chemoautotrophic vanadate transformation by natural mackinawite in aquifer. Water Res 2021; 189:116664. [PMID: 33249309 DOI: 10.1016/j.watres.2020.116664] [Citation(s) in RCA: 70] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 11/16/2020] [Accepted: 11/20/2020] [Indexed: 06/12/2023]
Abstract
Mackinawite (FeS), a widely-distributed natural reducing mineral, can donate electron for various (bio)processes. However, little is known about mackinawite-driven chemoautotrophic bioreduction of toxic vanadate [V(V)] in aquifer. This study demonstrates that V(V) is successfully bioreduced by mackinawite under anaerobic condition via 150-d operation of constructed aquifer. Complete V(V) removal was achieved at the initial concentration of 10 mg/L and flow rate of 0.125 mL/min. Fluctuant hydrochemistry and hydrodynamics affected V(V) removal performance. Biotic activity was identified as the major contribution to V(V) transformation (76.4 ± 1.01%). Chemoautotrophic genera (e.g., Thiobacillus) could oxidize FeS coupled to direct V(V) reduction independently. Heterotrophic V(V) reducers (e.g., Pseudomonas and Spirochaeta) could also achieve V(V) detoxification by utilizing metabolic intermediates synthesized by autotrophic Fe(II) oxidizers (e.g., Thiobacillus) and S(-II) oxidizing genera (e.g., Sulfuricurvum). Gene abundance and enzymatic activity tests confirmed that nitrate reductase gene napA functioned crucially in chemoautotrophic V(V) reduction by Fe(II) and S(-II) donating electron. V(V) was reduced to insoluble V(IV) while elements in mackinawite were oxidized to Fe(III) and SO42-. This study reveals the coupling of iron, sulfur and vanadium in biogeochemical cycling, and offers a promising strategy for remediation of V(V)-polluted aquifer.
Collapse
Affiliation(s)
- Chao He
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, PR China
| | - Baogang Zhang
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, PR China.
| | - Jianping Lu
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, PR China
| | - Rui Qiu
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, PR China
| |
Collapse
|
44
|
Boumaiza L, Chesnaux R, Drias T, Walter J, Huneau F, Garel E, Knoeller K, Stumpp C. Identifying groundwater degradation sources in a Mediterranean coastal area experiencing significant multi-origin stresses. Sci Total Environ 2020; 746:141203. [PMID: 32795761 DOI: 10.1016/j.scitotenv.2020.141203] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 07/21/2020] [Accepted: 07/21/2020] [Indexed: 05/20/2023]
Abstract
This study investigates the multiple contamination sources of a coastal Mediterranean aquifer in northeastern Algeria that is bordered by two rivers and neighboring densely populated areas. Hydrogeochemical and isotopic groundwater characterization is carried out, including the analyses of major elements, water stable isotopes δ2H-H2O and δ18O-H2O, and stable isotopes of nitrate δ15N-NO3 and δ18O-NO3, and then integrated into the history of land use over the study area. Groundwater nitrate concentrations ranging from 1.6 to 235 mg/L with a median value of 69 mg/L are evidence of the degradation of groundwater quality induced by anthropogenic sources. The combined of δ15N-NO3 and δ18O-NO3 ratios showed that nitrate in groundwater is attributable to (i) the uncontrolled development of inadequate private sanitation systems over the study area, and (ii) the unsafe application of animal manure to fertilize crops. Very active saltwater intrusion is confirmed by several hydrogeochemical indicators. Interestingly, the intrusion mechanism appears to be more complex than a direct intrusion from the Mediterranean Sea. During the high-water period, saltwater intrusion may also originate from the two rivers bordering the aquifer, via upstream migration of seawater through the river mouths. The heavier ratios in δ2H-H2O and δ18O-H2O of surface water collected from the rivers suggest that water from the Mediterranean Sea is mixing with water in the rivers. Multi-source contamination not only contributes to complex chemical reactions within the aquifer, but also contributes, via the cumulative effect of the various sources, to affecting large parts of the study area. The present study may serve as a warning to the effect that historical land-use practices may exert seriously deleterious impacts on groundwater quality and greatly limit conditions for the sustainable management of Mediterranean coastal areas.
Collapse
Affiliation(s)
- Lamine Boumaiza
- Université du Québec à Chicoutimi, Département des Sciences Appliquées, 555, boulevard de l'Université, Saguenay, Québec G7H 2B1, Canada.
| | - Romain Chesnaux
- Université du Québec à Chicoutimi, Département des Sciences Appliquées, 555, boulevard de l'Université, Saguenay, Québec G7H 2B1, Canada
| | - Tarek Drias
- Université Mustapha Benboulaïd, Département de Géologie, Campus de Fesdiss, 05030 Batna, Algeria
| | - Julien Walter
- Université du Québec à Chicoutimi, Département des Sciences Appliquées, 555, boulevard de l'Université, Saguenay, Québec G7H 2B1, Canada
| | - Frédéric Huneau
- Université de Corse Pascal Paoli, Département d'Hydrogéologie, Campus Grimaldi, BP 52, F-20250 Corte, France; CNRS, UMR 6134 SPE, BP 52, F-20250 Corte, France
| | - Emilie Garel
- Université de Corse Pascal Paoli, Département d'Hydrogéologie, Campus Grimaldi, BP 52, F-20250 Corte, France; CNRS, UMR 6134 SPE, BP 52, F-20250 Corte, France
| | - Kay Knoeller
- Helmholtz Centre for Environmental Research - UFZ, Department of Catchment Hydrology, Theodor Lieser Str. 4, Halle (Saale) 06120, Germany
| | - Christine Stumpp
- University of Natural Resources and Life Sciences, Institute for Soil Physics and Rural Water Management, Muthgasse 18, 1190 Vienna, Austria
| |
Collapse
|
45
|
Liu Y, Ma T, Chen J, Xiao C, Liu R, Du Y, Fendorf S. Contribution of clay-aquitard to aquifer iron concentrations and water quality. Sci Total Environ 2020; 741:140061. [PMID: 32603935 DOI: 10.1016/j.scitotenv.2020.140061] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Revised: 06/04/2020] [Accepted: 06/05/2020] [Indexed: 06/11/2023]
Abstract
The contribution of aquitards to aquifer water quality can be pronounced but is rarely considered. The aims of this study were to delineate the spatial distribution of iron in a shallow aquitard-aquifer system within Jianghan Plain (JHP) of central China and to identify the origin of high iron within aquifers. Infiltration, hydraulic gradients and sediment chemistry influence the distribution of iron in the aquitard pore water which has a significant effect on the underlying aquifer. Chemical equilibrium modeling of pore water was used to simulate chemical processes influencing aquifer chemistry and determined the possible precipitation of FeCO3, FeS minerals (FeSx) and Fe-oxides (representing hydroxides, oxyhydroxides, and oxides of ferric iron). We presented a conceptual chemical-physical scenario to explain the observed Fe distributions: (1) Increasing iron concentrations with low-level sulfide in aquitard pore water. (2) Increasing iron concentrations with low-level sulfide in aquitard pore water underlying ponded water. (3) Decreasing iron concentrations with high-level sulfide in aquitard pore water. In combination, our findings illustrate the influence of aquitards on aquifer chemistry using Fe within the Jianghan Plain as an example.
Collapse
Affiliation(s)
- Yanjun Liu
- School of Environmental Studies, China University of Geosciences, Wuhan 430074, China; Department of Earth System Science, Stanford University, Stanford 94305, USA
| | - Teng Ma
- School of Environmental Studies, China University of Geosciences, Wuhan 430074, China; State Key Laboratory of Biogeology and Environmental Geology, Wuhan 430074, China.
| | - Juan Chen
- School of Environmental Studies, China University of Geosciences, Wuhan 430074, China
| | - Cong Xiao
- School of Environmental Studies, China University of Geosciences, Wuhan 430074, China
| | - Rui Liu
- School of Environmental Studies, China University of Geosciences, Wuhan 430074, China
| | - Yao Du
- School of Environmental Studies, China University of Geosciences, Wuhan 430074, China
| | - Scott Fendorf
- Department of Earth System Science, Stanford University, Stanford 94305, USA
| |
Collapse
|
46
|
Yu H, Gong H, Chen B, Liu K, Gao M. Analysis of the influence of groundwater on land subsidence in Beijing based on the geographical weighted regression (GWR) model. Sci Total Environ 2020; 738:139405. [PMID: 32535280 DOI: 10.1016/j.scitotenv.2020.139405] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 05/06/2020] [Accepted: 05/11/2020] [Indexed: 06/11/2023]
Abstract
A global geological phenomenon caused by natural or human activities is described as land subsidence. Groundwater extraction plays a significant part in causing land subsidence. Due to economic development, urban expansion, and rapid population expansion, the unscientific exploitation of groundwater in Beijing has been accelerated, which makes it the region with the fastest land subsidence rate in China. To study the spatial heterogeneity of land subsidence caused by groundwater aquifers level changes, the monitoring results of land subsidence in 2003-2010 years were analyzed by using PS-InSAR, based on ENVISAT ASAR in Beijing plain area. The maximum value of accumulated land subsidence in the study area is 707 mm, and in this study area multiple subsidence center areas have been formed. A GWR model based on a regular grid has been established by exploring the effects of unconfined aquifer (UA), first confined aquifer (FCA), second confined aquifer (SCA), third confined aquifer (TCA) on land subsidence and their spatial non-stationarity. The change of subsidence in all subsidence areas is positively related to the change of SCA water level. Except the fact that the main control factors of Liyuan and Songzhuang are the change of UA layer, the change of SCA is the main control factor of land subsidence in most subsidence areas. Though the contribution rate of SCA to land subsidence is the highest, the contribution rate of TCA has been increasing. It is predicted that the impact on land subsidence will increase year by year. The results of this will not only help to understand the spatial impact patterns of aquifers on land subsidence zones, but also to formulate optimal groundwater regulation and recharge policies. There is a scarcity of the consideration of the compressible layer in the study and it will become more comprehensive if further datasets are obtained.
Collapse
Affiliation(s)
- Hairuo Yu
- Beijing Laboratory of Water Resources Security, Capital Normal University, Beijing 100048, China; The Key Lab of Resource Environment and GIS of Beijing, Capital Normal University, Beijing 100048, China; Base of the State Key Laboratory of Urban Environmental Process and Digital Modeling, Capital Normal University, Beijing 100048, China; Key Laboratory of 3D Information Acquisition and Application, MOE, Capital Normal University, Beijing 100048, China; Key Laboratory of Mechanism, Prevention and Mitigation of Land Subsidence, MOE, Capital Normal University, Beijing 100048, China; College of Resource Environment and Tourism, Capital Normal University, Beijing 100048, China.
| | - Huili Gong
- Beijing Laboratory of Water Resources Security, Capital Normal University, Beijing 100048, China; The Key Lab of Resource Environment and GIS of Beijing, Capital Normal University, Beijing 100048, China; Base of the State Key Laboratory of Urban Environmental Process and Digital Modeling, Capital Normal University, Beijing 100048, China; Key Laboratory of 3D Information Acquisition and Application, MOE, Capital Normal University, Beijing 100048, China; Key Laboratory of Mechanism, Prevention and Mitigation of Land Subsidence, MOE, Capital Normal University, Beijing 100048, China; College of Resource Environment and Tourism, Capital Normal University, Beijing 100048, China
| | - Beibei Chen
- Beijing Laboratory of Water Resources Security, Capital Normal University, Beijing 100048, China; The Key Lab of Resource Environment and GIS of Beijing, Capital Normal University, Beijing 100048, China; Base of the State Key Laboratory of Urban Environmental Process and Digital Modeling, Capital Normal University, Beijing 100048, China; Key Laboratory of 3D Information Acquisition and Application, MOE, Capital Normal University, Beijing 100048, China; Key Laboratory of Mechanism, Prevention and Mitigation of Land Subsidence, MOE, Capital Normal University, Beijing 100048, China; College of Resource Environment and Tourism, Capital Normal University, Beijing 100048, China
| | - Kaisi Liu
- Beijing Laboratory of Water Resources Security, Capital Normal University, Beijing 100048, China; The Key Lab of Resource Environment and GIS of Beijing, Capital Normal University, Beijing 100048, China; Base of the State Key Laboratory of Urban Environmental Process and Digital Modeling, Capital Normal University, Beijing 100048, China; Key Laboratory of 3D Information Acquisition and Application, MOE, Capital Normal University, Beijing 100048, China; Key Laboratory of Mechanism, Prevention and Mitigation of Land Subsidence, MOE, Capital Normal University, Beijing 100048, China; College of Resource Environment and Tourism, Capital Normal University, Beijing 100048, China
| | - Mingliang Gao
- Beijing Laboratory of Water Resources Security, Capital Normal University, Beijing 100048, China; The Key Lab of Resource Environment and GIS of Beijing, Capital Normal University, Beijing 100048, China; Base of the State Key Laboratory of Urban Environmental Process and Digital Modeling, Capital Normal University, Beijing 100048, China; Key Laboratory of 3D Information Acquisition and Application, MOE, Capital Normal University, Beijing 100048, China; Key Laboratory of Mechanism, Prevention and Mitigation of Land Subsidence, MOE, Capital Normal University, Beijing 100048, China; College of Resource Environment and Tourism, Capital Normal University, Beijing 100048, China
| |
Collapse
|
47
|
Abiriga D, Vestgarden LS, Klempe H. Groundwater contamination from a municipal landfill: Effect of age, landfill closure, and season on groundwater chemistry. Sci Total Environ 2020; 737:140307. [PMID: 32783870 DOI: 10.1016/j.scitotenv.2020.140307] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 05/21/2020] [Accepted: 06/15/2020] [Indexed: 06/11/2023]
Abstract
Groundwater reservoirs continue to be threatened globally, mainly from anthropogenic activities. There is need to understand how remediation of groundwater can be influenced by site-specific factors. There are few studies, if any, that incorporate at least three site-specific factors in a single investigation of groundwater contamination from landfills. We report a study where waste age, landfill closure, and season were compared with changes in water quality, using a twenty-four-year groundwater chemistry dataset. Groundwater samples were extracted from monitoring wells and analysed for twenty-eight physicochemical parameters. Results showed discharge of both legacy pollutants and elevated inorganic pollutants into the groundwater. Among the site-specific factors, waste age was the most influential. At the landfill age of 21 years, concentrations of pollutants became close to the reference value. The result also indicated that closing the landfill caused significant decrease in concentrations of contaminants in the groundwater (P < 0.05). Season was the least influential, registering significant results only for dissolved oxygen, sulphate and chloride (P < 0.05). Lastly, the result showed strong attenuation of pollutants with distance, thereby demonstrating the feasibility of the aquifer acting as a natural treatment plant to the pollutants. This eliminates any serious environmental risk associated with the emanating leachate, but at a cost of prohibiting abstraction of the groundwater for human use, due to potential health risks.
Collapse
Affiliation(s)
- Daniel Abiriga
- Department of Natural Sciences and Environmental Health, Faculty of Technology, Natural Sciences and Maritime Sciences, University of South-Eastern Norway, Campus Bø, 3800, Norway.
| | - Live S Vestgarden
- Department of Natural Sciences and Environmental Health, Faculty of Technology, Natural Sciences and Maritime Sciences, University of South-Eastern Norway, Campus Bø, 3800, Norway.
| | - Harald Klempe
- Department of Natural Sciences and Environmental Health, Faculty of Technology, Natural Sciences and Maritime Sciences, University of South-Eastern Norway, Campus Bø, 3800, Norway.
| |
Collapse
|
48
|
Rahman MNIA, Jeofry H, Basarian MS. Electrical resistivity survey data for potential aquifer in Banggi Island, Sabah, Malaysia. Data Brief 2020; 32:106194. [PMID: 32904202 PMCID: PMC7452430 DOI: 10.1016/j.dib.2020.106194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 08/11/2020] [Accepted: 08/13/2020] [Indexed: 11/29/2022] Open
Abstract
The survey data on potential aquifer was collected at two sites located in Banggi Island (i.e. Laksian Primary School [LPS] and Padang Primary School [PPS]), Malaysia on 25 and 26 April 2013. Both locations are geologically surrounded by various types of lithologies, namely, sandstone, mudstone, siltstone, shale, chert, conglomerate, lignite, tuff, limestone, terrace sand, gravel and coral. The resistivity data consisted of six-line pole-dipole short arrays and were recorded in-situ using SAS 4000 ABEM Lund Imaging System, together with a relay switching unit (Electrode Selector ES 464), six multiconductor cables, steel rod electrodes and jumpers. The data, namely electrode spacing, depth of investigation, subsurface resistivity, type of material and horizontal data coverage were used to assess the characteristics of the potential aquifer. The recorded data were then processed using RES2DINV software to obtain 2-D inversion model of the subsurface. The data were also equipped with six models of inverse resistivity section for both areas. The data obtained can be used by the government and stakeholders for groundwater exploration and extraction in order to provide water supplies for local communities, especially since access to these resources from the surrounding water treatment plants on the island is limited.
Collapse
Affiliation(s)
- Muhd Nur Ismail Abdul Rahman
- Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu Malaysia
| | - Hafeez Jeofry
- Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu Malaysia.,Institute of Oceanography and Environment, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia
| | - Mohd Sazaly Basarian
- Azair Sdn.Bhd. Lot No.2 Pusat Perindustrian Kelombong Jaya, Lorong Kacang Tanah 1, Mile 5.5, Jalan Kolombong, Kota KInabalu, Sabah Malaysia
| |
Collapse
|
49
|
Huang G, Liu C, Zhang Y, Chen Z. Groundwater is important for the geochemical cycling of phosphorus in rapidly urbanized areas: a case study in the Pearl River Delta. Environ Pollut 2020; 260:114079. [PMID: 32014754 DOI: 10.1016/j.envpol.2020.114079] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 10/23/2019] [Accepted: 01/23/2020] [Indexed: 06/10/2023]
Abstract
The fate of phosphorus in groundwater needs to be understood because phosphorus-rich groundwater is discharged into surface water bodies, which causes eutrophication, especially in urbanized areas. The present study investigated the spatial distributions and driving forces related to the groundwater phosphate levels in various aquifers in the Pearl River Delta (PRD), which has undergone three decades of urbanization, as well as the relationship between groundwater phosphate and arsenic was also discussed. The results showed that most of the high-phosphate (>1.53 mg/L) groundwater occurred in granular aquifers. The proportion of high-phosphate groundwater in granular aquifers was more than four times that in fissured aquifers, whereas high-phosphate groundwater was not observed in karst aquifers in the PRD. High-phosphate groundwater primarily occurred in urbanized areas in the PRD, and the proportion of high-phosphate groundwater had a significant positive correlation with the urbanization level. In granular aquifers, reductive environment and alkalization led to enrichment of the groundwater with phosphate. Anthropogenic sources such as wastewater from township-village enterprises (TVE) and animal wastes were the main sources of high-phosphate groundwater in urbanized areas, and the external input of phosphate enriched the groundwater arsenic levels in urbanized areas. By contrast, geogenic sources such as the release of phosphate from the reduction of Fe/Mn (hydr)oxides and the seawater intrusion accompanied by the release of phosphate from secondary minerals were mainly responsible for the occurrence of high-phosphate groundwater in peri-urban and non-urbanized areas, respectively. The high concentrations of both phosphate and arsenic in groundwater in fissured aquifers were mainly attributed to the infiltration of wastewater from TVEs. In contrast to the granular aquifers, the groundwater Eh and pH conditions were not conductive to the occurrence of high-phosphate groundwater in fissured aquifers.
Collapse
Affiliation(s)
- Guanxing Huang
- Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang, China; Hebei Key Laboratory of Groundwater Remediation, Shijiazhuang, China.
| | - Chunyan Liu
- Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang, China
| | - Ying Zhang
- Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang, China
| | - Zongyu Chen
- Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang, China.
| |
Collapse
|
50
|
Daesslé LW, Andrade-Tafoya PD, Lafarga-Moreno J, Mahlknecht J, van Geldern R, Beramendi-Orosco LE, Barth JAC. Groundwater recharge sites and pollution sources in the wine-producing Guadalupe Valley (Mexico): Restrictions and mixing prior to transfer of reclaimed water from the US-México border. Sci Total Environ 2020; 713:136715. [PMID: 32019047 DOI: 10.1016/j.scitotenv.2020.136715] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 01/13/2020] [Accepted: 01/13/2020] [Indexed: 06/10/2023]
Abstract
Rapid depletion of aquifers in semiarid and arid regions threatens water security. This holds true especially in emerging countries where insufficient knowledge about aquifer systems precludes the implementation of advanced management measures, such as managed aquifer recharge. This study deals with the generation of baseline knowledge for the assessment of aquifers in arid and semiarid regions where artificial recharge with reclaimed water gains increasing impetus. The Guadalupe aquifer in Baja California provides water to 57% of the Mexican wine industry. Recent plans foresee a partial replenishment of its depleted groundwater reserves by transferring treated waste water from the Mexico-USA border for irrigation. The aquifer demonstrated to have a rapid response by rising the water table of about +20 m in relation to natural recharge under an intense rainfall period of 236 mm. Two predominant recharge sources were identified based on a geochemical multi-tracer approach: (a) water of modern age (<5 yr, >1.8 TU) and mixed water of recent-submodern age (3H 0.8-1.8 TU), and (b) sub-modern waters that were recharged before 1952 (3H < 0.5 TU). Water of the first type originate in the main Guadalupe stream, which has a more depleted average δ18O isotope value (-7.8‰) than average local rainwater (-2.0‰). The stream water initially has a Na-HCO3 composition and recharges the entire Calafia zone and most groundwater along the riverbed across the valley. Water of the second type is mostly derived from hill-slope groundwater that has a stable isotope composition of mixed local rainwater and a NaCl composition. High total dissolved solids >2 g l-1 together with enriched NO3- and Se concentrations characterize groundwater in the downstream the Porvenir zone. The geochemical age of this older, hill-slope groundwater suggests that its replenishment takes at least several decades when it becomes exhausted.
Collapse
Affiliation(s)
- L W Daesslé
- Universidad Autónoma de Baja California, Instituto de Investigaciones Oceanológicas, Carretera Transpeninsular Ensenada-Tijuana, N° 3917, Fraccionamiento Playitas, C.P. 22860 Ensenada, Baja California, Mexico.
| | - P D Andrade-Tafoya
- Universidad Autónoma de Baja California, Instituto de Investigaciones Oceanológicas, Carretera Transpeninsular Ensenada-Tijuana, N° 3917, Fraccionamiento Playitas, C.P. 22860 Ensenada, Baja California, Mexico
| | - J Lafarga-Moreno
- Gerencia Operativa COTAS Valle de Guadalupe A.C., Calle Principal No.20, Esquina Tercera, Francisco Zarco, C.P. 22750 Ensenada, Baja California, Mexico
| | - J Mahlknecht
- Escuela de Ingeniería y Ciencias, Tecnológico de Monterrey, Av. Eugenio Garza Sada Sur No. 2501, Monterrey C.P. 64849, Nuevo León, Mexico
| | - R van Geldern
- Friedrich-Alexander University of Erlangen-Nuremberg (FAU), Department of Geography and Geosciences, GeoZentrum Nordbayern, Schlossgarten 5, 91054 Erlangen, Germany
| | - L E Beramendi-Orosco
- Laboratorio Nacional de Geoquímica y Mineralogía, Instituto de Geología, Universidad Nacional Autónoma de México, Ciudad Universitaria, Ciudad de México 04510, Mexico
| | - J A C Barth
- Friedrich-Alexander University of Erlangen-Nuremberg (FAU), Department of Geography and Geosciences, GeoZentrum Nordbayern, Schlossgarten 5, 91054 Erlangen, Germany
| |
Collapse
|