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1. Microorganisms and their metabolic activities affect seepage through porous media in groundwater artificial recharge systems: A review

Author:
Yang, Yuesuo; Wu, Yuhui; Lu, Ying; Shi, Min; Chen, Wenfang
Source:
Journal of hydrology 2021 v.598 pp. 126256
ISSN:
0022-1694
Subject:
groundwater; groundwater recharge,   etc   ; polymers; seepage;     Show all 4 Subjects
Abstract:
... Groundwater artificial recharge has been widely utilised throughout the world as an effective measure for solving groundwater overdraft. Many microorganisms are present in both recharging water and porous media, and their metabolic activities inevitably have complicated effects on the recharge process. Bioclogging is attributable to the growing population of bacteria and their extracellular polyme ...
DOI:
10.1016/j.jhydrol.2021.126256

2. Surface and Groundwater Interactions: A Review of Coupling Strategies in Detailed Domain Models

Author:
Haque, Arefin; Salama, Amgad; Lo, Kei; Wu, Peng
Source:
Hydrology 2021 v.8 no.1
ISSN:
2306-5338
Subject:
groundwater; groundwater flow,   etc   ; soil water;     Show all 3 Subject
Abstract:
... In groundwater numerical simulations, the interactions between surface and groundwater have received great attention due to difficulties related to their validation and calibration due to the dynamic exchange occurring at the soil–water interface. The interaction is complex at small scales. However, at larger scales, the interaction is even more complicated, and has never been fully addressed. A c ...
DOI:
10.3390/hydrology8010035

3. Three-dimensional hydrostratigraphy and groundwater flow models in complex Quaternary deposits and weathered/fractured bedrock: evaluating increasing model complexity

Author:
Åberg, Susanne Charlotta; Åberg, Annika Katarina; Korkka-Niemi, Kirsti
Source:
Hydrogeology journal 2021 v.29 no.3 pp. 1043-1074
ISSN:
1431-2174
Subject:
groundwater; groundwater flow; groundwater recharge,   etc   ; bedrock; hydraulic conductivity; water table;     Show all 6 Subjects
Abstract:
... Greater complexity in three-dimensional (3D) model structures yields more plausible groundwater recharge/discharge patterns, especially in groundwater/surface-water interactions. The construction of a 3D hydrostratigraphic model prior to flow modelling is beneficial when the hydraulic conductivity of geological units varies considerably. A workflow for 3D hydrostratigraphic modelling with Leapfrog ...
DOI:
10.1007/s10040-020-02299-4

4. Flowing Well—Time‐Domain Solution and Inverse Problem Revisited

Author:
Perina, Tomas
Source:
Ground water 2021 v.59 no.3 pp. 438-442
ISSN:
0017-467X
Subject:
groundwater; groundwater flow,   etc   ; aquifers; drawdown; equations;     Show all 5 Subjects
Abstract:
... Time‐domain analytical solution for groundwater flow to a fully penetrating flowing well is derived using the same substitution technique used to re‐derive (Perina 2010) the Theis (1935) equation and the approximate solution by Mishra and Guyonnet (1992) is confirmed. The exponential integral‐based flowing well function is a computationally effective alternative to the original Jacob and Lohman (1 ...
DOI:
10.1111/gwat.13064

5. Tracer movements in a straight uniform flow: New equations for the advective part considering the distortion of flow lines around the well

Author:
Delbar, Anthony; Chapuis, Robert P.
Source:
Journal of contaminant hydrology 2021 v.239 pp. 103776
ISSN:
0169-7722
Subject:
groundwater; groundwater flow,   etc   ; aquifers; isotropy; tracer techniques;     Show all 5 Subjects
Abstract:
... Methods for interpreting tracer tests often rely on equations assuming a natural regional flow which is straight and uniform. The main purpose of this project was to develop more realistic equations for the advective part of contaminant transport, by including the flow lines distortion occurring in the vicinity of the injection well. The complex potential of the flow during a tracer test was calcu ...
DOI:
10.1016/j.jconhyd.2021.103776

6. Upstream Dispersion in Solute Transport Models: A Simple Evaluation and Reduction Methodology

Author:
Irvine, D.J.; Werner, A.D.; Ye, Y.; Jazayeri, A.
Source:
Ground water 2021 v.59 no.2 pp. 287-291
ISSN:
0017-467X
Subject:
groundwater; groundwater flow,   etc   ; aquifers; equations; solutes;     Show all 5 Subjects
Abstract:
... This article outlines analytical solutions to quantify the length scale associated with “upstream dispersion,” the artificial movement of solutes in the opposite direction to groundwater flow, in solute transport models. Upstream dispersion is an unwanted artifact in common applications of the advection‐dispersion equation (ADE) in problems involving groundwater flow in the direction of increasing ...
DOI:
10.1111/gwat.13036

7. Groundwater contamination by fluorinated aromatics: Benzotrifluoride and its derivatives

Author:
Lava, Roberto; Calore, Francesco; Mazzola, Massimo; Moretto, Carlo Giovanni; Pretto, Ugo; Salmaso, Paola; Bizzotto, Alessandro; Carvutto, Rosi; Acerbi, Mauro; Tommasi, Jgor; Marcomini, Antonio
Source:
Chemosphere 2021 v.265 pp. 129029
ISSN:
0045-6535
Subject:
groundwater; groundwater contamination,   etc   ; aromatic compounds; surveys; Italy;     Show all 5 Subjects
Abstract:
... Benzotrifluoride (BTF) and its derivatives (BTFs) were found in the groundwater of the Veneto region (Italy) as a result of industrial contamination dating back to the 1970s. In the first survey, BTF and 6 BTFs were identified, out of which 4-chloro-3nitrobenzotrifluoride (3N4CBTF) was the only quantified analyte (concentration up to 1 mg L⁻¹) and was used to trace the contamination plume. A surve ...
DOI:
10.1016/j.chemosphere.2020.129029

8. An empirical specific storage-depth model for the Earth's crust

Author:
Kuang, Xingxing; Zheng, Chunmiao; Jiao, Jiu Jimmy; Cherry, John A.; Chen, Jianxin
Source:
Journal of hydrology 2021 v.592 pp. 125784
ISSN:
0022-1694
Subject:
groundwater; groundwater flow,   etc   ; aquifers; empirical models; solutes;     Show all 5 Subjects
Abstract:
... Specific storage, a basic hydraulic property of an aquifer, is required for transient groundwater studies. Previous investigations have shown that specific storage decreases with depth. Here, we collected field-specific storage-depth data from the literature and proposed an empirical model that describes the decreasing trend of specific storage with depth in the Earth's crust. The results show tha ...
DOI:
10.1016/j.jhydrol.2020.125784

9. Fracture Flow Characterization with Low‐Noise Spontaneous Potential Logging

Author:
Kowalski, André C.G.; Mendonça, Carlos A.; Ofterdinger, Ulrich S.
Source:
Ground water 2021 v.59 no.1 pp. 16-23
ISSN:
0017-467X
Subject:
groundwater; groundwater flow,   etc   ; geophysics; hydraulic conductivity; models;     Show all 5 Subjects
Abstract:
... Geophysical well logging has been applied for fracture characterization in crystalline terrains by physical properties measurements and borehole wall imaging. Some of these methods can be applied to monitor pumping tests to identify fractures contributing to groundwater flow and, with this, determine hydraulic conductivity and transmissivity along the well. We present a procedure to identify fract ...
DOI:
10.1111/gwat.13009

10. Estimating hydraulic properties from tidal propagation in circular islands

Author:
Solórzano-Rivas, S.C.; Werner, A.D.; Irvine, D.J.
Source:
Journal of hydrology 2021 v.598 pp. 126182
ISSN:
0022-1694
Subject:
groundwater,   etc   ; diffusivity; unconfined aquifer;     Show all 3 Subjects
Abstract:
... Observations of tidal propagation in coastal aquifers allow for rapid, low-cost quantification of aquifer parameters that are integrated over significant distances. Previous methods for aquifer property estimation from tidal propagation have focussed on continental aquifers and assumed straight, infinite shorelines. A recent investigation has proposed a correction to the Ferris analytical solution ...
DOI:
10.1016/j.jhydrol.2021.126182

11. New perspectives on the use of 224Ra/228Ra and 222Rn/226Ra activity ratios in groundwater studies

Author:
Diego-Feliu, M.; Rodellas, V.; Saaltink, M.W.; Alorda-Kleinglass, A.; Goyetche, T.; Martínez-Pérez, L.; Folch, A.; Garcia-Orellana, J.
Source:
Journal of hydrology 2021 v.596 pp. 126043
ISSN:
0022-1694
Subject:
groundwater,   etc   ; aquifers; models; oceanography;     Show all 4 Subjects
Abstract:
... The naturally occurring Ra isotopes (²²³Ra; T₁/₂ = 11.4 d, ²²⁴Ra; T₁/₂ = 3.66 d, ²²⁶Ra; T₁/₂ = 1,600 y, and ²²⁸Ra; T₁/₂ = 5.7 y) and Rn (²²²Rn; T₁/₂ = 3.82 d) have been widely applied as environmental tracers. The application of these radioactive tracers has mainly been restricted to the evaluation of oceanographic and land-ocean interaction processes, although in recent years their use has also b ...
DOI:
10.1016/j.jhydrol.2021.126043

12. Subslab Depressurization Versus Subslab Ventilation: Insights from Recent Research

Author:
McAlary, Todd A.
Source:
Ground water monitoring & remediation 2021 v.41 no.2 pp. 132-137
ISSN:
1069-3629
Subject:
groundwater,   etc   ; air; remediation; vapors;     Show all 4 Subjects
Abstract:
... Many vapor intrusion (VI) mitigation systems involve some form of gas extraction from below the concrete floor slab of a building to create a static vacuum below the slab that meets or exceeds a value specified in a guidance document or standard. This also results in some degree of ventilation below the floor slab, which reduces vapor concentrations and achieves some level of mass removal of targe ...
DOI:
10.1111/gwmr.12443

13. Control Volume Isogeometric Analysis for groundwater flow modeling in heterogeneous porous media

Author:
Gotovac, Hrvoje; Malenica, Luka; Gotovac, Blaž
Source:
Advances in water resources 2021 v.148 pp. 103838
ISSN:
0309-1708
Subject:
groundwater flow,   etc   ; head; water;     Show all 3 Subjects
Abstract:
... Many important groundwater transport applications require solving the Darcy flow in heterogeneous porous media. Flow simulations, especially in large, highly heterogeneous aquifers, require extensive computational resources, a multiresolution (multiscale) approach to resolve the different heterogeneity scales and an accurate calculation of the velocity field. Common methods, such as finite volumes ...
DOI:
10.1016/j.advwatres.2020.103838

14. Impact of diffuse layer processes on contaminant forward and back diffusion in heterogeneous sandy-clayey domains

Author:
Muniruzzaman, Muhammad; Rolle, Massimo
Source:
Journal of contaminant hydrology 2021 v.237 pp. 103754
ISSN:
0169-7722
Subject:
groundwater,   etc   ; clay; mass transfer;     Show all 3 Subjects
Abstract:
... Low-permeability aquitards can significantly affect the transport, distribution, and persistence of contaminant plumes in subsurface systems. Although such low-permeability materials are often charged, the key role of charge-induced electrostatic processes during contaminant transport has not been extensively studied. This work presents a detailed investigation exploring the coupled effects of het ...
DOI:
10.1016/j.jconhyd.2020.103754

15. Enhanced vacuum UV-based process (VUV/H2O2/PMS) for the effective removal of ammonia from water: Engineering configuration and mechanistic considerations

Author:
Amanollahi, Hawzhin; Moussavi, Gholamreza; Giannakis, Stefanos
Source:
Journal of hazardous materials 2021 v.402 pp. 123789
ISSN:
0304-3894
Subject:
groundwater,   etc   ; ammonia; pH;     Show all 3 Subjects
Abstract:
... In this work, the VUV, VUV/H₂O₂, VUV/PMS, and VUV/H₂O₂/PMS processes were compared with the corresponding UVC-based AOPs under identical experimental conditions for the ammonia removal. Among the examined AOPs, the VUV/H₂O₂/PMS demonstrated the highest performance in converting NH4+ to N₂. A 82.7 % removal of 100 mg/L NH4+, with N₂ selectivity over 99 % was obtained in the VUV/H₂O₂/PMS process wit ...
DOI:
10.1016/j.jhazmat.2020.123789

16. Methods for Delivery and Distribution of Amendments for Subsurface Remediation: A Critical Review

Author:
Muller, Katherine A.; Johnson, Christian D.; Bagwell, Christopher E.; Truex, Michael J.
Source:
Ground water monitoring & remediation 2021 v.41 no.1 pp. 46-75
ISSN:
1069-3629
Subject:
groundwater,   etc   ; permeability; remediation;     Show all 3 Subjects
Abstract:
... The ability to reliably deliver and widely distribute remedial amendments through the subsurface environment is of paramount importance to achieve cleanup objectives for contaminated sediments and groundwater for protection of sensitive environmental habitats and natural resources. A wide range of amendments, delivery techniques, and subsurface access methods are available. However, the applicabil ...
DOI:
10.1111/gwmr.12418

17. Stable isotopes of precipitation and groundwater provide new insight into groundwater recharge and flow in a structurally complex hydrogeologic system: West Hawai‘i, USA

Author:
Fackrell, Joseph K.; Glenn, Craig R.; Thomas, Donald; Whittier, Robert; Popp, Brian N.
Source:
Hydrogeology journal 2020 v.28 no.4 pp. 1191-1207
ISSN:
1431-2174
Subject:
groundwater; groundwater flow; groundwater recharge
Abstract:
... Local meteoric water lines (LMWL) and corresponding relationships between δ²H and δ¹⁸O values in precipitation and elevation are useful tools for assessing groundwater recharge areas and flow paths. The LMWL and relationship between δ¹⁸O values in precipitation and elevation for the West Hawai‘i region of Hawai‘i (USA) were determined utilizing a network of eight cumulative precipitation collector ...
DOI:
10.1007/s10040-020-02143-9

18. Nonylphenol photodegradation by novel ternary MIL-100(Fe)/ZnFe2O4/PCN composite under visible light irradiation via double charge transfer process

Author:
Xu, Kailin; Jiao, Li; Wang, Chuqiao; Bu, Yiming; Tang, Yuling; Qiu, Liwei; Zhang, Qiuya; Wang, Liping
Source:
Journal of environmental sciences (China) 2022 v.111 pp. 93-103
ISSN:
1001-0742
Subject:
groundwater,   etc   ; active ingredients; ambient temperature; bioaccumulation; carbon nitride; human health; irradiation; light; nonylphenols; photocatalysis; photolysis; reaction mechanisms; sewage; surface water; China;     Show all 15 Subjects
Abstract:
... Nonylphenol (NP) residues, as a typical endocrine disrupting chemical (EDC), frequently exist in sewage, surface water, groundwater and even drinking water, which poses a serious threat to human health due to its bioaccumulation. In order to remove NP, a series of MIL-100(Fe)/ZnFe₂O₄/flake-like porous carbon nitride (MIL/ZC) was synthesized through in-situ synthesis at room temperature. High perfo ...
DOI:
10.1016/j.jes.2021.03.020

19. Release of soil colloids during flow interruption increases the pore-water PFAS concentration in saturated soil

Author:
Borthakur, Annesh; Cranmer, Brian K.; Dooley, Gregory P.; Blotevogel, Jens; Mahendra, Shaily; Mohanty, Sanjay K.
Source:
Environmental pollution 2021 v.286 pp. 117297
ISSN:
0269-7491
Subject:
groundwater; groundwater flow,   etc   ; aquifers; particle size; perfluorooctanoic acid; pollution; soil;     Show all 7 Subjects
Abstract:
... Groundwater flow through aquifer soils or packed bed systems can fluctuate for various reasons, which could affect the concentration of natural colloids and per- and polyfluoroalkyl substances (PFAS) in the pore water. In such cases, PFAS concentration could either decrease due to matrix diffusion of PFAS or increase by the detachment of colloids carrying PFAS. Yet, the effect of flow fluctuation ...
DOI:
10.1016/j.envpol.2021.117297

20. Remediation of 2,4-dichlorophenol-contaminated groundwater using nano-sized CaO2 in a two-dimensional scale tank

Author:
Li, Tianyi; Zhang, Chengwu; Zhang, Jingyi; Yan, Song; Qin, Chuanyu
Source:
Frontiers of environmental science & engineering 2021 v.15 no.5 pp. 87
ISSN:
2095-2201
Subject:
groundwater; groundwater contamination,   etc   ; 2,4-dichlorophenol; calcium peroxide; oxidation; pH; remediation;     Show all 7 Subjects
Abstract:
... This study evaluates the applicability of nano-sized calcium peroxide (CaO₂) as a source of H₂O₂ to remediate 2,4-dichlorophenol (2,4-DCP) contaminated groundwater via the advanced oxidation process (AOP). First, the effect and mechanism of 2,4-DCP degradation by CaO₂ at different Fe concentrations were studied (Fenton reaction). We found that at high Fe concentrations, 2,4-DCP almost completely d ...
DOI:
10.1007/s11783-020-1381-3