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Qin J, He L, Su X, Wang S, Tong M. Starvation Process Would Induce Different Bacterial Mobilities and Attachment Performances in Porous Media without and with Nutrients on Surfaces. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:13879-13889. [PMID: 39047087 DOI: 10.1021/acs.est.4c02533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/27/2024]
Abstract
The influence and mechanisms of starvation on the bacterial mobile performance in porous media with different nutrition conditions are not well understood. The present study systematically investigated the impacts of starvation on the mobility and attachment of both Gram-negative and Gram-positive strains in porous media without and with nutrients on surfaces in both simulated and real water samples. We found that regardless of strain types and water chemistries, starvation would greatly inhibit bacterial attachment onto bare porous media without nutrients yet could significantly enhance cell attachment onto porous media with nutrients on their surfaces. The mechanisms driving the opposite transport behaviors induced by starvation in porous media without and with nutrients were totally different. We found that the starvation process decreased cell motility and increased repulsive force between bacteria and porous media via decreasing cell sizes and zeta potentials, reducing EPS secretion and cell hydrophobicity, thus increasing transport/inhibiting attachment of bacteria in porous media without nutrients on sand surfaces. In contrast, through strengthening the positive chemotactic response of bacteria to nutrients, the starvation process greatly enhanced bacterial attachment onto porous media with nutrients on sand surfaces. Clearly, via modification of the nutrient conditions in porous media, the mobility/attachment performance of bacteria could be regulated.
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Affiliation(s)
- Jianmei Qin
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education; College of Environmental Sciences and Engineering, Peking University, Beijing 100871, P. R. China
| | - Lei He
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education; College of Environmental Sciences and Engineering, Peking University, Beijing 100871, P. R. China
| | - Xiangyu Su
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education; College of Environmental Sciences and Engineering, Peking University, Beijing 100871, P. R. China
- Beijing Key Laboratory of Water Resources & Environmental, Engineering, China University of Geosciences (Beijing), Beijing 100083, China
| | - Shuai Wang
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education; College of Environmental Sciences and Engineering, Peking University, Beijing 100871, P. R. China
| | - Meiping Tong
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education; College of Environmental Sciences and Engineering, Peking University, Beijing 100871, P. R. China
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Syngouna VI, Georgopoulou MP, Bellou MI, Vantarakis A. Effect of Human Adenovirus Type 35 Concentration on Its Inactivation and Sorption on Titanium Dioxide Nanoparticles. FOOD AND ENVIRONMENTAL VIROLOGY 2024; 16:143-158. [PMID: 38308001 DOI: 10.1007/s12560-023-09582-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 12/30/2023] [Indexed: 02/04/2024]
Abstract
Removal of pathogenic viruses from water resources is critically important for sanitation and public health. Nanotechnology is a promising technology for virus inactivation. In this paper, the effects of titanium dioxide (TiO2) anatase nanoparticles (NPs) on human adenovirus type 35 (HAdV-35) removal under static and dynamic (with agitation) batch conditions were comprehensively studied. Batch experiments were performed at room temperature (25 °C) with and without ambient light using three different initial virus concentrations. The virus inactivation experimental data were satisfactorily fitted with a pseudo-first-order expression with a time-dependent rate coefficient. The experimental results demonstrated that HAdV-35 sorption onto TiO2 NPs was favored with agitation under both ambient light and dark conditions. However, no distinct relationships between virus initial concentration and removal efficiency could be established from the experimental data.
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Affiliation(s)
- Vasiliki I Syngouna
- Environmental Microbiology Unit, Department of Public Health, Medical School, University of Patras, 26504, Patras, Greece.
| | | | - Maria I Bellou
- Environmental Microbiology Unit, Department of Public Health, Medical School, University of Patras, 26504, Patras, Greece
| | - Apostolos Vantarakis
- Environmental Microbiology Unit, Department of Public Health, Medical School, University of Patras, 26504, Patras, Greece
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3
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Chen K, Zhu J, Zhang Q, Shao J, Cui Y, Zhang A, Xie T. Co-transport behavior of Am(III) and natural colloids in the vadose zone sediments. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 350:124006. [PMID: 38641036 DOI: 10.1016/j.envpol.2024.124006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 03/26/2024] [Accepted: 04/16/2024] [Indexed: 04/21/2024]
Abstract
Americium (III) (Am(III)) in the natural environment is considered immobile due to its low solubility, strong adsorption, and high affinity to solid surfaces. However, the presence of natural colloids may carry Am(III) transport for long distance. The individual and co-transport behaviors of Am(III) and natural colloids through the unsaturated packed columns were investigated under the influence of pH, electrolyte concentration, velocity, Am(III) concentration and natural colloids concentration. Under all experimental conditions, Am(III) individual transport construct sight breakthrough curves (BTCs, CAm/C0 < 3%), but the presence of natural colloids increased the BTCs plateau of Am(III) significantly (30% < CAm/C0 < 80%), indicating that the colloids were able to promote Am(III) transport in the unsaturated porous media. DLVO theoretical calculations reveal that the increased pH and decreased electrolyte concentration lead to a rase in electrostatic repulsion, and the natural colloids tend to be dispersed and stabilized, which facilitates elution. In addition to this, the increase of velocity and colloids concentration will lead to greater breakthrough of natural colloids. The non-equilibrium two-site model and the two-site kinetic retention model well-described the BTCs of Am(III) and natural colloids, respectively. This study provide new insights into the behavior of natural colloids carrying the Am(III) into aquifers through the vadose zone sediments.
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Affiliation(s)
- Ke Chen
- School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing, 100083, China
| | - Jun Zhu
- School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing, 100083, China; Key Laboratory of Nuclear Environmental Simulation and Evaluation Technology, China Institute for Radiation Protection, Taiyuan, 030006, China
| | - Qiulan Zhang
- School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing, 100083, China.
| | - Jingli Shao
- School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing, 100083, China
| | - Yali Cui
- School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing, 100083, China
| | - Aiming Zhang
- Key Laboratory of Nuclear Environmental Simulation and Evaluation Technology, China Institute for Radiation Protection, Taiyuan, 030006, China
| | - Tian Xie
- Key Laboratory of Nuclear Environmental Simulation and Evaluation Technology, China Institute for Radiation Protection, Taiyuan, 030006, China; College of Environmental Science and Engineering, Taiyuan University of Technology, Jinzhong, 030600, China
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4
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Wu T, Chen Y, Yang Z. 3D pore-scale characterization of colloid aggregation and retention by confocal microscopy: Effects of fluid structure and ionic strength. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 917:170349. [PMID: 38280576 DOI: 10.1016/j.scitotenv.2024.170349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 01/03/2024] [Accepted: 01/19/2024] [Indexed: 01/29/2024]
Abstract
Understanding the mechanisms of colloid transport and retention as well as the spatial distribution of colloids in porous media is an important topic for contamination transport and remediation in subsurface environments. Utilizing advanced three-dimensional visualization experiments, we effectively capture the intricate distribution characteristics of colloids in the 3D pore space and quantify the size of colloid clusters that aggregate at fluid-fluid interfaces and solid surfaces during two-phase flow. Our experimental results reveal the influence of pore-scale events, such as Haines jumps and pinch-off, on colloid retention. Our results also indicate that large drainage rates can facilitate colloid retention on solid surfaces, especially under the condition of high ionic strength. This can be attributed to the migration of colloids from the fluid-fluid interface to the solid surface, propelled by transients in the local fluid structure. The findings reveal a synergistic effect of the ionic strength and hydrodynamic conditions on colloid transport and retention during two-phase flow and provide important insights for predicting the fate and transport of contaminants in soil and groundwater environments involving multiple fluid phases.
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Affiliation(s)
- Ting Wu
- State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan 430072, China; Key Laboratory of Rock Mechanics in Hydraulic Structural Engineering of the Ministry of Education, Wuhan University, Wuhan 430072, China
| | - Yurun Chen
- Wuhan Britain-China School, Wuhan 430033, China
| | - Zhibing Yang
- State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan 430072, China; Key Laboratory of Rock Mechanics in Hydraulic Structural Engineering of the Ministry of Education, Wuhan University, Wuhan 430072, China.
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Zhang W, Li S, Zhao K, Chai J, Wan B, Qin Y, Huan H, Sun S, Yang Y, Jat Baloch MY. E. coli phage transport in porous media: Response to colloid types and water saturation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 906:167635. [PMID: 37806582 DOI: 10.1016/j.scitotenv.2023.167635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 09/05/2023] [Accepted: 10/05/2023] [Indexed: 10/10/2023]
Abstract
Because of its long survival time, high migration ability and high pathogenicity, the migration of the virus in the subsurface environment deserves in-depth exploration and research. In this study we investigated the migration behavior of E. coli phage (VI) with organic colloids (HA) or inorganic colloids (SiO2) in the saturated or unsaturated bands and compared the differences in their migration mechanisms.The effects of different colloids on the surface characteristics of VI were analyzed according to particle size and zeta potential. Column experiments were conducted to simulate their migration in the subsurface environment. The results show that HA enhances the stability of VI-HA, promotes VI migration and plays a dominant role in its migration process under both saturated and unsaturated conditions. In contrast, SiO2 puts VI-SiO2 in an unstable state and is easily separated in the unsaturated state, thus promoting VI migration. Based on migration experiments, the extent of influence factors on VI migration was quantified and compared. The effect of colloids on VI migration is greater than that of moisture content, where the effect of HA is greater than that of SiO2. This study provides an experimental research idea to determine the dominant factors affecting virus migration, and provides a general direction and theoretical basis for the biological risk assessment of pathogenic microorganisms in complex underground environments, in order to enable the decision makers to make a response in time, accurately, and efficiently.
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Affiliation(s)
- Wenjing Zhang
- Key Laboratory of Groundwater Resources and Environment, Jilin University, Ministry of Education, Changchun 130021, China; College of New Energy and Environment, Jilin University, Changchun 130021, China.
| | - Shuxin Li
- Key Laboratory of Groundwater Resources and Environment, Jilin University, Ministry of Education, Changchun 130021, China; College of New Energy and Environment, Jilin University, Changchun 130021, China
| | - Kaichao Zhao
- Key Laboratory of Groundwater Resources and Environment, Jilin University, Ministry of Education, Changchun 130021, China; College of New Energy and Environment, Jilin University, Changchun 130021, China
| | - Juanfen Chai
- Key Laboratory of Groundwater Resources and Environment, Jilin University, Ministry of Education, Changchun 130021, China; College of New Energy and Environment, Jilin University, Changchun 130021, China
| | - Bo Wan
- Key Laboratory of Groundwater Resources and Environment, Jilin University, Ministry of Education, Changchun 130021, China; College of New Energy and Environment, Jilin University, Changchun 130021, China
| | - Yunqi Qin
- Power Engineering Consulting Group, Northwest Electric Power Design Institute Co., Ltd. of China, Xi'an 710075, China
| | - Huan Huan
- Technical Centre for Soil, Agriculture and Rural Ecology and Environment, Ministry of Ecology and Environment, Beijing 100012, China
| | - Simiao Sun
- School of Geography, Earth and Environmental Sciences, University of Birmingham, UK
| | - Yuesuo Yang
- Key Laboratory of Groundwater Resources and Environment, Jilin University, Ministry of Education, Changchun 130021, China; College of New Energy and Environment, Jilin University, Changchun 130021, China
| | - Muhammad Yousuf Jat Baloch
- Key Laboratory of Groundwater Resources and Environment, Jilin University, Ministry of Education, Changchun 130021, China; College of New Energy and Environment, Jilin University, Changchun 130021, China
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Hicks E, Rogers NMK, Hendren CO, Kuehn MJ, Wiesner MR. Extracellular Vesicles and Bacteriophages: New Directions in Environmental Biocolloid Research. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:16728-16742. [PMID: 37898880 DOI: 10.1021/acs.est.3c05041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/31/2023]
Abstract
There is a long-standing appreciation among environmental engineers and scientists regarding the importance of biologically derived colloidal particles and their environmental fate. This interest has been recently renewed in considering bacteriophages and extracellular vesicles, which are each poised to offer engineers unique insights into fundamental aspects of environmental microbiology and novel approaches for engineering applications, including advances in wastewater treatment and sustainable agricultural practices. Challenges persist due to our limited understanding of interactions between these nanoscale particles with unique surface properties and their local environments. This review considers these biological particles through the lens of colloid science with attention given to their environmental impact and surface properties. We discuss methods developed for the study of inert (nonbiological) particle-particle interactions and the potential to use these to advance our understanding of the environmental fate and transport of extracellular vesicles and bacteriophages.
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Affiliation(s)
- Ethan Hicks
- Department of Civil & Environmental Engineering, Duke University, Durham, North Carolina 27708, United States
- Center for the Environmental Implications of Nanotechnology, Duke University, Durham, North Carolina 27708, United States
| | - Nicholas M K Rogers
- Department of Mechanical Engineering, Porter School of Earth and Environmental Studies, Tel Aviv University, Tel Aviv 69978, Israel
| | - Christine Ogilvie Hendren
- Center for the Environmental Implications of Nanotechnology, Duke University, Durham, North Carolina 27708, United States
- Research Institute for Environment, Energy and Economics, Appalachian State University, Boone, North Carolina 28608, United States
| | - Meta J Kuehn
- Department of Biochemistry, Duke University Medical Center, Durham, North Carolina 27710, United States
| | - Mark R Wiesner
- Department of Civil & Environmental Engineering, Duke University, Durham, North Carolina 27708, United States
- Center for the Environmental Implications of Nanotechnology, Duke University, Durham, North Carolina 27708, United States
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7
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Sepehrnia N, Gorakifard M, Hallett PD, Hajabbasi MA, Shokri N, Coyne M. Contrasting transport and fate of hydrophilic and hydrophobic bacteria in wettable and water-repellent porous media: Straining or attachment? Colloids Surf B Biointerfaces 2023; 228:113433. [PMID: 37392521 DOI: 10.1016/j.colsurfb.2023.113433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 06/12/2023] [Accepted: 06/27/2023] [Indexed: 07/03/2023]
Abstract
Bacterial transport and retention likely depend on bacterial and soil surface properties, especially hydrophobicity. We used a controlled experimental setup to explore hydrophilic Escherichia coli (E. coli) and hydrophobic Rhodococcus erythropolis (PTCC1767) (R. erythropolis) transport through dry (- 15,000 cm water potential) and water saturated (0 cm water potential) wettable and water-repellent sand columns. A pulse of bacteria (1 × 108 CFU mL-1) and bromide (10 mmol L-1) moved through the columns under saturated flow (0 cm) for four pore volumes. A second bacteria and bromide pulse was then poured on the column surfaces and leaching was extended six more pore volumes. In dry wettable sand attachment dominated E. coli retention, whereas R. erythropolis was dominated by straining. Once wetted, the dominant retention mechanisms flipped between these bacteria. Attachment by either bacteria decreased markedly in water-repellent sand, so straining was the main retention mechanism. We explain this from capillary potential energy, which enhanced straining under the formation of water films at very early times (i.e., imbibing) and film thinning at much later times (i.e., draining). The interaction between the hydrophobicity of bacteria and soil on transport, retention and release mechanisms needs greater consideration in predictions.
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Affiliation(s)
| | - Mohsen Gorakifard
- Department of Mechanical Engineering, Universitat Rovira i Virgili, Spain
| | - Paul D Hallett
- School of Biological Sciences, University of Aberdeen, Aberdeen, UK
| | - Mohammad Ali Hajabbasi
- Department of Soil Science, College of Agriculture, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran
| | - Nima Shokri
- Institute of Geo-Hydroinformatics, Hamburg University of Technology, Am Schwarzenberg-Campus 3 (E), 21073 Hamburg, Germany
| | - Mark Coyne
- University of Kentucky, Department of Plant and Soil Sciences, United States
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8
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Pan Y, Chen C, Shang J. Effect of reduced inherent organic matter on stability and transport behaviors of black soil colloids. CHEMOSPHERE 2023:139149. [PMID: 37307927 DOI: 10.1016/j.chemosphere.2023.139149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 05/30/2023] [Accepted: 06/05/2023] [Indexed: 06/14/2023]
Abstract
Soil organic matter plays an important role in the stability, transport, and fate of soil colloids. At present, studies have mostly focused on the effects of adding exogenous organic matter on soil colloidal properties, while there is very limited research on the effect of reduced inherent soil organic matter on the environmental behavior of soil colloids. This study investigated the stability and transport behavior of black soil colloids (BSC) and black soil colloids with reduced inherent organic matter (BSC-ROM) under different ionic strength (5, 50 mM) and background solution pH (4.0, 7.0, and 9.0) conditions. Meanwhile, the release behavior of two soil colloids in the saturated sand column under transient ionic strength conditions was also studied. The results showed that both ionic strength reduction and pH increase increased the negative charges of BSC and BSC-ROM, and improved the electrostatic repulsion between soil colloids and grain surface, thereby promoting the stability and mobility of soil colloids. The decrease in inherent organic matter had little effect on the surface charge of soil colloids, suggesting that the electrostatic repulsive force was not the main force affecting the stability and mobility of BSC and BSC-ROM, and reducing inherent organic matter might significantly reduce the stability and mobility of soil colloids by weakening the steric hindrance interaction. The decrease of transient ionic strength reduced the depth of the energy minimum and activated the soil colloids retained on the surface of the grain at three pH conditions. This study is helpful to predict the potential impact of soil organic matter degradation on the fate of black soil colloids in natural environment system.
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Affiliation(s)
- Yue Pan
- College of Land Science and Technology, China Agricultural University, Key Laboratory of Arable Land Conservation in North China, Ministry of Agriculture and Rural Affairs, Beijing, 100193, PR China
| | - Chong Chen
- College of Land Science and Technology, China Agricultural University, Key Laboratory of Arable Land Conservation in North China, Ministry of Agriculture and Rural Affairs, Beijing, 100193, PR China.
| | - Jianying Shang
- College of Land Science and Technology, China Agricultural University, Key Laboratory of Arable Land Conservation in North China, Ministry of Agriculture and Rural Affairs, Beijing, 100193, PR China.
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9
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Doan VS, Kim DO, Snoeyink C, Sun Y, Shin S. Shape- and orientation-dependent diffusiophoresis of colloidal ellipsoids. Phys Rev E 2023; 107:L052602. [PMID: 37329064 DOI: 10.1103/physreve.107.l052602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 04/25/2023] [Indexed: 06/18/2023]
Abstract
We present the diffusiophoresis of ellipsoidal particles induced by ionic solute gradients. Contrary to the common expectation that diffusiophoresis is shape independent, here we show experimentally that this assumption breaks down when the thin Debye layer approximation is relaxed. By tracking the translation and rotation of various ellipsoids, we find that the phoretic mobility of ellipsoids is sensitive to the eccentricity and the orientation of the ellipsoid relative to the imposed solute gradient, and can further lead to nonmonotonic behavior under strong confinement. We show that such a shape- and orientation-dependent diffusiophoresis of colloidal ellipsoids can be easily captured by modifying theories for spheres.
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Affiliation(s)
- Viet Sang Doan
- Department of Mechanical and Aerospace Engineering, University at Buffalo, The State University of New York, Buffalo, New York 14260, USA
| | - Dong-Ook Kim
- Department of Mechanical Engineering and Mechanics, Drexel University, Philadelphia, Pennsylvania 19104, USA
| | - Craig Snoeyink
- Department of Mechanical and Aerospace Engineering, University at Buffalo, The State University of New York, Buffalo, New York 14260, USA
| | - Ying Sun
- Department of Mechanical Engineering and Mechanics, Drexel University, Philadelphia, Pennsylvania 19104, USA
| | - Sangwoo Shin
- Department of Mechanical and Aerospace Engineering, University at Buffalo, The State University of New York, Buffalo, New York 14260, USA
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Wang Y, Zhong L, Song X, Adeel M, Yang Y. Natural colloids facilitated transport of steroidal estrogens in saturated porous media: Mechanism and processes. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 315:120315. [PMID: 36216178 DOI: 10.1016/j.envpol.2022.120315] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 09/23/2022] [Accepted: 09/27/2022] [Indexed: 06/16/2023]
Abstract
Steroid estrogens (SEs) as typical endocrine disrupting compounds (EDCs) are widely detected in terrestrial environment, whilst the transport of SEs in groundwater remains unwell understood. Specifically, the effects of ubiquitous natural colloids on the SEs transport are unclear in subsurface environment, especially in aquifer systems. Here, the influence of inorganic colloids (i.e. silica and illite) and organic colloids, i.e. Humic acid (HA), on the transport of estrone (E1) and estradiol (E2) in saturated porous media was studied utilizing laboratory scale column experiments. Characterization on the colloids and porous aquifer material was conducted to provide a basis for interpretation of the experimental findings. Results showed that the transport of SEs was clearly affected by the natural colloids migrating through the saturated porous media. About 38.5% of E1 and 24.6% of E2 were retained in the column when colloids were absent in the system. When transporting with silica colloids, illite colloids, and HA colloids, the transport of E1 was enhanced by 15.64%, 11.17% and 25.60%, respectively; whilst the transport of E2 was improved by 19.56%, 23.06% and 36.40%, respectively. The SEs transport enhancement by colloids depended upon not only the mobility of the colloids but also their geochemical characteristics. The organic colloids showed 1.5-2.5 times greater ability on promoting the transport of SEs than the inorganic ones tested in this study. The proposed mechanisms of nature colloids facilitated transport of SEs including competing for adsorption sites on the sand surfaces by the colloids resulting mobilization of adsorbed SEs from solid matrix, and transport of colloids as carriers for SEs.
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Affiliation(s)
- Yuanyuan Wang
- Key Lab of Groundwater Resources and Environment (Jilin University), Ministry of Education, Changchun, 130021, China
| | - Lirong Zhong
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - Xiaoming Song
- Key Lab of Eco-restoration of Region Contaminated Environment (Shenyang University), Ministry of Education, Shenyang, 110044, China
| | - Muhammad Adeel
- BNU-HKUST Laboratory of Green Innovation, Advanced Institute of Natural Sciences, Beijing Normal University at Zhuhai, Zhuhai, 519085, China
| | - Yuesuo Yang
- Key Lab of Groundwater Resources and Environment (Jilin University), Ministry of Education, Changchun, 130021, China; Key Lab of Eco-restoration of Region Contaminated Environment (Shenyang University), Ministry of Education, Shenyang, 110044, China.
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11
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Tu S, Liu X, Cai H. Effect of gravity on colloidal particle transport in a saturated porous medium: Analytical solutions and experiments. PLoS One 2022; 17:e0275644. [PMID: 36197892 PMCID: PMC9534398 DOI: 10.1371/journal.pone.0275644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 09/20/2022] [Indexed: 11/05/2022] Open
Abstract
The colloidal particle transport process in all porous media from laboratory to nature is affected by gravity. In this paper, a mathematical model of colloidal particle migration in a saturated porous medium with the gravity effect is established by combining the gap velocity (advection) with the settling velocity (gravity effect), and an analytical solution of the particle migration problem with time variation of the particle injection intensity is obtained using an integral transformation. The correctness and rationality of the analytical solution are verified by comparing the experimental and theoretical results of the particle migration problem in the point-source transient injection mode. The analytical solution can easily analyze the colloid transport experimental data in a variety of seepage directions. Analysis of the influence of seepage velocities in three different seepage directions on particle transport parameters shows: under the same seepage direction, the peak value of the breakthrough curve increased with an increase in the seepage velocity. The dispersion, adsorption coefficient, and deposition rate decreased with an increase in the seepage velocity. Under the same seepage velocity, the peak value of the breakthrough curve from large to small was vertically downward (VD)> horizontal (H)> vertically upward (VU), the order of dispersion from large to small was vertically downward (VD)>horizontal (H) >vertically upward (VU), the order of the adsorption coefficient and deposition rate of particles from large to small was vertically upward (VU)> horizontal (H) >vertically downward (VD), and the smaller the seepage velocity, the greater the relative differences in the peak value of the breakthrough curve, dispersion, the particle adsorption coefficient, and the deposition rate in the different seepage directions. Therefore, gravity is an important mechanism of particle migration in saturated porous media. The larger the particle size and density were, the smaller the seepage velocity was and the more obvious the effect of gravity. The findings of this study can help for better understanding of colloidal transport properties in porous media under the coupled effects of gravity and hydrodynamics.
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Affiliation(s)
- Shujie Tu
- College of Civil Engineering, Hunan University, Changsha, China
| | - Xiaoming Liu
- College of Civil Engineering, Hunan University, Changsha, China
- * E-mail:
| | - Hongjiang Cai
- College of Civil Engineering, Hunan University, Changsha, China
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12
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Chen X, Yang L, Guo J, Xu S, Di J, Zhuang J. Interactive removal of bacterial and viral particles during transport through low-cost filtering materials. Front Microbiol 2022; 13:970338. [PMID: 35992651 PMCID: PMC9386502 DOI: 10.3389/fmicb.2022.970338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 07/18/2022] [Indexed: 11/17/2022] Open
Abstract
Pathogen filtration is critically important for water sanitation. However, it is a big challenge to balance removal efficiency and filtering material cost. In this study, we quantified the removal processes of a bacterial strain Escherichia coli 652T7 and a model bacteriophage MS2 (ATCC 15597-B1) during their transport through columns containing iron filings (IF), calcined magnesite (CM), natural ore limestone (OL) or corn stalk biochar (BC) under saturated flow conditions. Experimental results showed that 99.98, 79.55, 63.79, and 62.59% of injected E. coli 652T7 and 98.78, 92.26, 68.79, and 69.82% of injected MS2 were removed by IF, CM, OL, and BC, respectively. The differences in removal percentage were attributed to the disparities of the microorganisms and filtering materials in surface function groups, surface charges, and surface morphology. Transport modeling with advection-dispersion equation (ADE) and interaction energy calculation with extended Derjaguin, Landau, Verwey, and Overbeek (XDLVO) model indicated that E. coli 652T7 and MS2 were mostly removed via irreversible attachment. In IF columns, E. coli 652T7 promoted the transport of MS2 but not vice versa. In CM columns, MS2 facilitated the transport of E. coli 652T7 and vice versa at a less extent. Such changes were a combined result of attachment site competition, steric effect, and mechanical straining. We found that the sum of the removal percentages of the two microorganisms in their respective transport experiments were similar to those calculated from their co-transport experiments. This result suggests that the removals were mainly limited by the attachment sites in the filtering materials.
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Affiliation(s)
- Xijuan Chen
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
| | - Liqiong Yang
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
| | - Junjie Guo
- School of Civil Engineering, Liaoning Technical University, Fuxin, China
| | - Shuang Xu
- College of Land and Environment, Shenyang Agricultural University, Shenyang, China
| | - Junzhen Di
- School of Civil Engineering, Liaoning Technical University, Fuxin, China
- *Correspondence: Junzhen Di,
| | - Jie Zhuang
- Department of Biosystems Engineering and Soil Science, Center for Environmental Biotechnology, Institute for a Secure and Sustainable Environment, The University of Tennessee, Knoxville, TN, United States
- Jie Zhuang,
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13
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Wu M, Bi E, Li B. Cotransport of nano-hydroxyapatite and different Cd(II) forms influenced by fulvic acid and montmorillonite colloids. WATER RESEARCH 2022; 218:118511. [PMID: 35512536 DOI: 10.1016/j.watres.2022.118511] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 04/09/2022] [Accepted: 04/23/2022] [Indexed: 06/14/2023]
Abstract
Soil colloids can affect the cotransport of nanoparticles and pollutants. In this study, the influencing mechanisms of organic fulvic acid (FA) and inorganic montmorillonite colloid (MONT) on the cotransport of nHAP and Cd(II) were investigated. Column experiments combined with Derjaguin-Landau-Verwey-Overbeek (DLVO) theory, attachment efficiency calculation and two-site kinetic retention model were applied to study the mechanisms. Results showed that the co-existence of FA or MONT made the transport of nHAP improved by 58-75% and 33-59%, respectively. Both of them could improve the stability of nHAP particles and enhance electrostatic repulsion between nHAP particles and sand. Retention of nHAP in the sand was mainly caused by secondary energy minimum and physical straining. The co-existence of FA or MONT changed the amount of adsorbed species of Cd(II) and decreased the retardation effect of nHAP on Cd(II) transport. With increasing FA concentration, soluble FA·Cd and suspended nHAP·FA·Cd complexes in the system increased. Transport of soluble Cd(II) and total Cd(II) were strengthened due to the concentration effect of FA and the improved stability of nHAP particles. With increasing MONT concentration, the amount of soluble Cd(II) decreased, but that of colloidal Cd(II) (nHAP·Cd and MONT·Cd) increased. Due to the stronger effect of colloidal Cd(II) change than that of the soluble Cd(II) change, the transport of total Cd(II) was improved by 34-57%. The findings of this study can help to understand the fate of nanoparticles and Cd(II) in natural water and soil.
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Affiliation(s)
- Mengmeng Wu
- School of Water Resources and Environment, Beijing Key Laboratory of Water Resources and Environmental Engineering, and MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing 100083, PR China; China National Environmental Monitoring Centre, Beijing 100012, PR China
| | - Erping Bi
- School of Water Resources and Environment, Beijing Key Laboratory of Water Resources and Environmental Engineering, and MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing 100083, PR China.
| | - Binghua Li
- Department of Water Resources, Beijing Water Science and Technology Institute, Beijing 100048, PR China
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14
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Image interpretation for kaolinite detachment from solid substrate: type curves, stochastic model. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129451] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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15
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Xu Z, Pan D, Tang Q, Wei X, Liu C, Li X, Chen X, Wu W. Co-transport and co-release of Eu(III) with bentonite colloids in saturated porous sand columns: Controlling factors and governing mechanisms. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 298:118842. [PMID: 35031401 DOI: 10.1016/j.envpol.2022.118842] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 12/21/2021] [Accepted: 01/09/2022] [Indexed: 06/14/2023]
Abstract
Accurate prediction of the colloid-driven transport of radionuclides in porous media is critical for the long-term safety assessment of radioactive waste disposal repository. However, the co-transport and corelease process of radionuclides with colloids have not been well documented, the intrinsic mechanisms for colloids-driven retention/transport of radionuclides are still pending for further discussion. Thus the controlling factors and governing mechanisms of co-transport and co-release behavior of Eu(III) with bentonite colloids (BC) were discussed and quantified by combining laboratory-scale column experiments, colloid filtration theory and advection dispersion equation model. The results showed that the role of colloids in facilitating or retarding the Eu(III) transport in porous media varied with cations concentration, pH, and humic acid (HA). The transport of Eu(III) was facilitated by the dispersed colloids under the low ionic strength and high pH conditions, while was impeded by the aggregated colloids cluster. The enhancement of Eu(III) transport was not monotonically risen with the increase of colloids concentration, the most optimized colloids concentration in facilitating Eu(III) transport was approximately 150 mg L-1. HA showed significant promotion on both Eu(III) and colloid transport because of not only its strong Eu(III) complexion ability but also the increased dispersion of HA-coated colloid particles. The HA and BC displayed a synergistic effect on Eu(III) transport, the co-transport occurred by forming the ternary BC-HA-Eu(III) hybrid. The transport patterns could be simulated well with a two-site model that used the advection dispersion equation by reflecting the blocking effect. The retarded Eu(III) on the stationary phase was released and remobilized by the introduction of colloids, or by a transient reduction in cation concentration. The findings are essential for predicting the geological fate and the migration risk of radionuclides in the repository environment.
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Affiliation(s)
- Zhen Xu
- Frontiers Science Center for Rare Isotopes, Lanzhou University, Lanzhou, 730000, China; School of Nuclear Science and Technology, Lanzhou University, Lanzhou, 730000, China
| | - Duoqiang Pan
- Frontiers Science Center for Rare Isotopes, Lanzhou University, Lanzhou, 730000, China; School of Nuclear Science and Technology, Lanzhou University, Lanzhou, 730000, China.
| | - Qingfeng Tang
- School of Nuclear Science and Technology, Lanzhou University, Lanzhou, 730000, China
| | - Xiaoyan Wei
- School of Nuclear Science and Technology, Lanzhou University, Lanzhou, 730000, China
| | - Chunli Liu
- Beijing National Laboratory for Molecular Sciences, Fundamental Science Laboratory on Radiochemistry and Radiation Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Xiaolong Li
- China Academy of Engineering Physics, Mianyang, 621000, China
| | - Ximeng Chen
- Frontiers Science Center for Rare Isotopes, Lanzhou University, Lanzhou, 730000, China; School of Nuclear Science and Technology, Lanzhou University, Lanzhou, 730000, China
| | - Wangsuo Wu
- Frontiers Science Center for Rare Isotopes, Lanzhou University, Lanzhou, 730000, China; School of Nuclear Science and Technology, Lanzhou University, Lanzhou, 730000, China
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16
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Chai J, Zhang W, Liu D, Li S, Chen X, Yang Y, Zhang D. Decreased levels and ecological risks of disinfection by-product chloroform in a field-scale artificial groundwater recharge project by colloid supplement. ENVIRONMENT INTERNATIONAL 2022; 161:107130. [PMID: 35134712 DOI: 10.1016/j.envint.2022.107130] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 01/29/2022] [Accepted: 01/31/2022] [Indexed: 06/14/2023]
Abstract
To bolster freshwater supply, artificial groundwater recharge with recycled water has increasingly attracted research attentions and interests. However, artificial groundwater recharge has potential risks to groundwater quality, as recharge water disinfection is frequently used for pathogen inactivation and causes the concerns of disinfection by-products (DBPs). Colloid supplement is a good approach solving this problem, but its roles in mitigating DBPs remains unclear. In this study, we collected 20 groundwater and soil samples from a field-scale groundwater recharge project, and explored the impacts of silica colloids on chloroform migration and groundwater bacterial communities during the recharge process. Water physicochemical variables changed along the recharge time, and colloid supplement significantly reduced chloroform formation and slowed its migration in groundwater. Bacterial communities in groundwater, river water and recharge water were significantly different. Gammaproteobacteria in recharge water (71.7%) was more abundant than in river water (30.5%) and groundwater (33.5%), while Actinobacteria dominated groundwater (40.6%). After recharge, Gammaproteobacteria increased more with colloid supplement (75.7%) than without (52.6%), attributing to its dominance in soils (74.6%). Our results suggested more bacterial lineages released from soils into aquifer by silica colloid supplement, owing to the competitive adsorption encouraging microbial transfer, especially Gram-negative bacteria. Our findings unraveled the effects of colloid supplement on chloroform formation and migration during artificial groundwater recharge, which consequently altered groundwater bacterial communities, and offered valuable suggestions for the safety management of DBPs in aquifer recharge.
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Affiliation(s)
- Juanfen Chai
- Key Laboratory of Groundwater Resources and Environment (Jilin University), Ministry of Education, Changchun 130021, China; College of New Energy and Environment, Jilin University, Changchun 130021, China
| | - Wenjing Zhang
- Key Laboratory of Groundwater Resources and Environment (Jilin University), Ministry of Education, Changchun 130021, China; College of New Energy and Environment, Jilin University, Changchun 130021, China.
| | - Dan Liu
- Shandong Hydraulic Research Institute, Jinan 250000, China
| | - Shuxin Li
- Key Laboratory of Groundwater Resources and Environment (Jilin University), Ministry of Education, Changchun 130021, China; College of New Energy and Environment, Jilin University, Changchun 130021, China
| | - Xuequn Chen
- Shandong Hydraulic Research Institute, Jinan 250000, China
| | - Yuesuo Yang
- Key Laboratory of Groundwater Resources and Environment (Jilin University), Ministry of Education, Changchun 130021, China; College of New Energy and Environment, Jilin University, Changchun 130021, China
| | - Dayi Zhang
- Key Laboratory of Groundwater Resources and Environment (Jilin University), Ministry of Education, Changchun 130021, China; College of New Energy and Environment, Jilin University, Changchun 130021, China.
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17
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Vengosh A, Coyte RM, Podgorski J, Johnson TM. A critical review on the occurrence and distribution of the uranium- and thorium-decay nuclides and their effect on the quality of groundwater. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 808:151914. [PMID: 34856287 DOI: 10.1016/j.scitotenv.2021.151914] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 10/22/2021] [Accepted: 11/19/2021] [Indexed: 06/13/2023]
Abstract
This critical review presents the key factors that control the occurrence of natural elements from the uranium- and thorium-decay series, also known as naturally occurring radioactive materials (NORM), including uranium, radium, radon, lead, polonium, and their isotopes in groundwater resources. Given their toxicity and radiation, elevated levels of these nuclides in drinking water pose human health risks, and therefore understanding the occurrence, sources, and factors that control the mobilization of these nuclides from aquifer rocks is critical for better groundwater management and human health protection. The concentrations of these nuclides in groundwater are a function of the groundwater residence time relative to the decay rates of the nuclides, as well as the net balance between nuclides mobilization (dissolution, desorption, recoil) and retention (adsorption, precipitation). This paper explores the factors that control this balance, including the relationships between the elemental chemistry (e.g., solubility and speciation), lithological and hydrogeological factors, groundwater geochemistry (e.g., redox state, pH, ionic strength, ion-pairs availability), and their combined effects and interactions. The various chemical properties of each of the nuclides results in different likelihoods for co-occurrence. For example, the primordial 238U, 222Rn, and, in cases of high colloid concentrations also 210Po, are all more likely to be found in oxic groundwater. In contrast, in reducing aquifers, Ra nuclides, 210Pb, and in absence of high colloid concentrations, 210Po, are more mobile and frequently occur in groundwater. In highly permeable sandstone aquifers that lack sufficient adsorption sites, Ra is often enriched, even in low salinity and oxic groundwater. This paper also highlights the isotope distributions, including those of relatively long-lived nuclides (238U/235U) with abundances that depend on geochemical conditions (e.g., fractionation induced from redox processes), as well as shorter-lived nuclides (234U/238U, 228Ra/226Ra, 224Ra/228Ra, 210Pb/222Rn, 210Po/210Pb) that are strongly influenced by physical (recoil), lithological, and geochemical factors. Special attention is paid in evaluating the ability to use these isotope variations to elucidate the sources of these nuclides in groundwater, mechanisms of their mobilization from the rock matrix (e.g., recoil, ion-exchange), and retention into secondary mineral phases and ion-exchange sites.
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Affiliation(s)
| | | | - Joel Podgorski
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland
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18
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Bai H, Chen J, Hu Y, Wang G, Liu W, Lamy E. Biocolloid transport and deposition in porous media: A review. KOREAN J CHEM ENG 2022. [DOI: 10.1007/s11814-021-0941-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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19
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Yu C, Duan P, Barry DA, Johnson WP, Chen L, Yu Z, Sun Y, Li Y. Colloidal transport and deposition through dense vegetation. CHEMOSPHERE 2022; 287:132197. [PMID: 34547559 DOI: 10.1016/j.chemosphere.2021.132197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 08/30/2021] [Accepted: 09/06/2021] [Indexed: 06/13/2023]
Abstract
The effectiveness of submerged synthetic aquatic vegetation on removal of colloids from flowing water was investigated to explore retention of particulate nonpoint source pollutants in aquatic systems. In colloid transport experiments, the deposition rate coefficient of colloids in dense vegetation is often taken as spatially constant. This assumption was tested by experiments and modeling aimed at quantifying changes in colloid retention with travel distance in submerged synthetic aquatic vegetation. Experiments were performed in a 10-m long, 0.6-m wide flume with a 5-cm water depth under different fluid velocities, initial colloid concentrations, and solution pH values. A model accounting for advection, dispersion and first-order kinetic deposition described the experimental data. The colloid deposition rate coefficient showed a power-law decrease with travel distance, and reached a steady state value before the end of the flume. Measured changes in colloid properties with transport distance (ζ potential and size) could not explain the observed decrease. While gravity was shown to contribute to the decrease, its impact was too weak to explain the decreasing power law trend, suggesting that processes operating in granular media to produce similar outcomes may also apply to submerged vegetation.
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Affiliation(s)
- Congrong Yu
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, College of Hydrology and Water Resources, Nanjing, Jiangsu, 210098, China.
| | - Peiyi Duan
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, College of Hydrology and Water Resources, Nanjing, Jiangsu, 210098, China
| | - D A Barry
- Ecological Engineering Laboratory (ECOL), Institute of Environmental Engineering (IIE), Faculty of Architecture, Civil and Environmental Engineering (ENAC), Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland.
| | - William P Johnson
- Department of Geology & Geophysics, University of Utah, Salt Lake City, UT, 84112, USA
| | - Li Chen
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, College of Hydrology and Water Resources, Nanjing, Jiangsu, 210098, China; Division of Hydrologic Sciences, Desert Research Institute, Las Vegas, NV, USA
| | - Zhongbo Yu
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, College of Hydrology and Water Resources, Nanjing, Jiangsu, 210098, China
| | - Yufeng Sun
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, College of Hydrology and Water Resources, Nanjing, Jiangsu, 210098, China
| | - Ying Li
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, College of Hydrology and Water Resources, Nanjing, Jiangsu, 210098, China
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20
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Seetha N, Hassanizadeh SM. A two-way coupled model for the co-transport of two different colloids in porous media. JOURNAL OF CONTAMINANT HYDROLOGY 2022; 244:103922. [PMID: 34864473 DOI: 10.1016/j.jconhyd.2021.103922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 10/04/2021] [Accepted: 11/13/2021] [Indexed: 06/13/2023]
Abstract
Models for the co-transport of two different colloids commonly assume a one-way coupling. This is because often a large colloid and small colloid are involved. Therefore, they assume that the spread of smaller colloid is affected by the transport of larger colloids, but not the other way around. However, a number of studies have shown that this assumption is not valid, even for large and small colloids. Therefore, in this study, a two-way coupled model is developed to simulate the co-transport of two different colloids in porous media and their effect on each other. We have considered the interactions of the two colloids with the grain surface, kinetics of heteroaggregation (of the two colloids), and heteroaggregate deposition onto the grain surface. We assumed a first-order kinetic model to represent heteroaggregate formation and its deposition on the grain surface. The model is evaluated by fitting the experimental data reported in four different papers from the literature on the co-transport of clay colloids and viruses, bacteria and graphene oxide nanoparticles, and clay colloids and graphene oxide nanoparticles. The model performance is compared with the commonly-used one-way coupled model. The two-way coupled model is found to satisfactorily simulate most of the experimental conditions reported in the above papers, except for the co-transport of montmorillonite-adenovirus, and Staphylococcus aureus- graphene oxide nanoparticles.
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Affiliation(s)
- N Seetha
- Department of Civil Engineering, Indian Institute of Technology Hyderabad, Telangana 502285, India.
| | - S Majid Hassanizadeh
- Stuttgart Center for Simulation Science (SIMTECH), Integrated Research Training Group SFB 1313, Stuttgart University, Germany; Department of Earth Sciences, Utrecht University, 3584, CB, Utrecht, The Netherlands
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21
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Population balance modeling of homogeneous viral aggregation. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2021.117035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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Wu Y, Li Z, Yang Y, Purchase D, Lu Y, Dai Z. Extracellular Polymeric Substances Facilitate the Adsorption and Migration of Cu 2+ and Cd 2+ in Saturated Porous Media. Biomolecules 2021; 11:1715. [PMID: 34827713 PMCID: PMC8615540 DOI: 10.3390/biom11111715] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Accepted: 11/08/2021] [Indexed: 11/16/2022] Open
Abstract
Heavy metal contamination in groundwater is a serious environmental problem. Many microorganisms that survive in subsurface porous media also produce extracellular polymeric substances (EPS), but little is known about the effect of these EPS on the fate and transport of heavy metals in aquifers. In this study, EPS extracted from soil with a steam method were used to study the adsorption behaviors of Cu2+ and Cd2+, employing quartz sand as a subsurface porous medium. The results showed that EPS had a good adsorption capacity for Cu2+ (13.5 mg/g) and Cd2+ (14.1 mg/g) that can be viewed using the Temkin and Freundlich models, respectively. At a pH value of 6.5 ± 0.1 and a temperature of 20 °C, EPS showed a greater affinity for Cu2+ than for Cd2+. The binding force between EPS and quartz sand was weak. The prior saturation of the sand media with EPS solution can significantly promote the migration of the Cu2+ and Cd2+ in sand columns by 8.8% and 32.1%, respectively. When treating both metals simultaneously, the migration of Cd2+ was found to be greater than that of Cu2+. This also demonstrated that EPS can promote the co-migration of Cu2+ and Cd2+ in saturated porous media.
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Affiliation(s)
- Yuhui Wu
- Key Laboratory of Groundwater Resources and Environment, Jilin University, Ministry of Education, Changchun 130021, China; (Y.W.); (Y.L.); (Z.D.)
- Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun 130021, China
| | - Zhengyu Li
- Academy of Environmental Planning & Design, Co., Ltd., Nanjing University, Nanjing 210093, China;
| | - Yuesuo Yang
- Key Laboratory of Groundwater Resources and Environment, Jilin University, Ministry of Education, Changchun 130021, China; (Y.W.); (Y.L.); (Z.D.)
- Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun 130021, China
| | - Diane Purchase
- Department of Natural Sciences, Faculty of Science and Technology, Middlesex University, The Burroughs, London NW4 4BT, UK;
| | - Ying Lu
- Key Laboratory of Groundwater Resources and Environment, Jilin University, Ministry of Education, Changchun 130021, China; (Y.W.); (Y.L.); (Z.D.)
- Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun 130021, China
| | - Zhenxue Dai
- Key Laboratory of Groundwater Resources and Environment, Jilin University, Ministry of Education, Changchun 130021, China; (Y.W.); (Y.L.); (Z.D.)
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23
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Won J, Kim T, Kang M, Choe Y, Choi H. Kaolinite and illite colloid transport in saturated porous media. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127052] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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24
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Sasidharan S, Bradford SA, Šimůnek J, Kraemer SR. Virus transport from drywells under constant head conditions: A modeling study. WATER RESEARCH 2021; 197:117040. [PMID: 33774462 PMCID: PMC9126062 DOI: 10.1016/j.watres.2021.117040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 01/24/2021] [Accepted: 03/10/2021] [Indexed: 06/10/2023]
Abstract
Many arid and semi-arid regions of the world face challenges in maintaining the water quantity and quality needs of growing populations. A drywell is an engineered vadose zone infiltration device widely used for stormwater capture and managed aquifer recharge. To our knowledge, no prior studies have quantitatively examined virus transport from a drywell, especially in the presence of subsurface heterogeneity. Axisymmetric numerical experiments were conducted to systematically study virus fate from a drywell for various virus removal and subsurface heterogeneity scenarios under steady-state flow conditions from a constant head reservoir. Subsurface domains were homogeneous or had stochastic heterogeneity with selected standard deviation (σ) of lognormal distribution in saturated hydraulic conductivity and horizontal (X) and vertical (Z) correlation lengths. Low levels of virus concentration tailing can occur even at a separation distance of 22 m from the bottom of the drywell, and 6-log10 virus removal was not achieved when a small detachment rate (kd1=1 × 10⁻⁵ min⁻¹) is present in a homogeneous domain. Improved virus removal was achieved at a depth of 22 m in the presence of horizontal lenses (e.g., X=10 m, Z=0.1 m, σ=1) that enhanced the lateral movement and distribution of the virus. In contrast, faster downward movement of the virus with an early arrival time at a depth of 22 m occurred when considering a vertical correlation in permeability (X=1 m, Z=2 m, σ=1). Therefore, the general assumption of a 1.5-12 m separation distance to protect water quality may not be adequate in some instances, and site-specific microbial risk assessment is essential to minimize risk. Microbial water quality can potentially be improved by using an in situ soil treatment with iron oxides to increase irreversible attachment and solid-phase inactivation.
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Affiliation(s)
- Salini Sasidharan
- Department of Environmental Sciences, University of California, Riverside, CA 92521, USA; United States Department of Agriculture, Agricultural Research Service, Sustainable Agricultural Water Systems Unit, Davis, CA 95616, USA.
| | - Scott A Bradford
- United States Department of Agriculture, Agricultural Research Service, Sustainable Agricultural Water Systems Unit, Davis, CA 95616, USA
| | - Jiří Šimůnek
- Department of Environmental Sciences, University of California, Riverside, CA 92521, USA
| | - Stephen R Kraemer
- U.S. Environmental Protection Agency, Office of Research and Development, San Francisco, CA 94105, USA
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25
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Abbar B, Alem A, Pantet A, Ahfir ND, Marcotte S, Wang H, Duchemin B. Effect of natural geotextile on the cotransport of heavy metals (Cu 2+, Pb 2+, and Zn 2+) and kaolinite particles. ENVIRONMENTAL TECHNOLOGY 2021; 42:558-570. [PMID: 31264954 DOI: 10.1080/09593330.2019.1637463] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 06/24/2019] [Indexed: 06/09/2023]
Abstract
A cotransport study of heavy metals and kaolinite particles in sand column with and without flax geotextiles was carried out. The objectives were to evaluate the potential role of kaolinite in heavy metals transfer and to analyse the influence of flax geotextiles on the transfer of these pollutants. The adsorption rates of heavy metals on the kaolinite particles were, respectively, 53%, 65% and 25% for copper, lead, and zinc. The injection of kaolinite with heavy metals resulted in a significant decrease in the retention efficiency of copper and lead in the filter. The presence of kaolinite in the injected solution has virtually no influence on the effectiveness of zinc fixation in the filter. The retention of heavy metals is in the order of Zn > Cu > Pb with a significant drop of retention efficiency of 34% for copper, 67% for lead, and less than 1% for zinc. The presence of kaolinite in the injected solution reversed the retention order of heavy metals when metals solution was injected alone. Flax geotextiles increase the ability of the filter to retain soluble and attached heavy metals. It improves the sand retention capacity and it retains soluble and attached metals in its structure.
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26
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Effect of Clay Colloid Particles on Formaldehyde Transport in Unsaturated Porous Media. WATER 2020. [DOI: 10.3390/w12123541] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This study examines the effects of two representative colloid-sized clay particles (kaolinite, KGa-1b and montmorillonite, STx-1b) on the transport of formaldehyde (FA) in unsaturated porous media. The transport of FA was examined with and without the presence of clay particles under various flow rates and various levels of saturation in columns packed with quartz sand, under unsaturated conditions. The experimental results clearly suggested that the presence of clay particles retarded by up to ~23% the transport of FA in unsaturated packed columns. Derjaguin–Landau–Verwey–Overbeek (DLVO) interaction energy calculations demonstrated that permanent retention of clay colloids at air-water interfaces (AWI) and solid-water interfaces (SWI) was negligible, except for the pair (STx-1b)–SWI. The experimental results of this study showed that significant clay colloid retention occurred in the unsaturated column, especially at low flow rates. This deviation from DLVO predictions may be explained by the existence of additional non-DLVO forces (hydrophobic and capillary forces) that could be much stronger than van der Waals and double layer forces. The present study shows the important role of colloids, which may act as carriers of contaminants.
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27
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Li M, He L, Zhang X, Rong H, Tong M. Different surface charged plastic particles have different cotransport behaviors with kaolinite ☆particles in porous media. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 267:115534. [PMID: 33254596 DOI: 10.1016/j.envpol.2020.115534] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 08/19/2020] [Accepted: 08/24/2020] [Indexed: 06/12/2023]
Abstract
The wide utilization of plastic related products leads to the ubiquitous presence of plastic particles in natural environments. Plastic particles could interact with kaolinite (one type of typical clay particles abundant in environments) and form plastic-kaolinite heteroaggregates. The fate and transport of both plastic particles and kaolinite particles thus might be altered. The cotransport and deposition behaviors of micron-sized plastic particles (MPs) with different surface charge (both negative and positive surface charge) with kaolinite in porous media in both 5 and 25 mM NaCl solutions were investigated in present study. Both types of MPs (negatively charged carboxylate-modified MPs (CMPs) and positively charged amine-modified MPs (AMPs)) formed heteroaggregates with kaolinite particles under both solution conditions examined, however, CMPs and AMPs exhibited different cotransport behaviors with kaolinite. Specifically, the transport of both CMPs and kaolinite was increased under both ionic strength conditions when kaolinite and CMPs were copresent in suspensions. While, when kaolinite and positively charged AMPs were copresent in suspensions, negligible transport of both kaolinite and AMPs were observed under examined salt solution conditions. The competition deposition sites by kaolinite (the portion suspending in solution) with CMPs-kaolinite heteroaggregates led to the increased transport both CMPs and kaolinite when both types of colloids were copresent. In contrast, the formation of larger sized AMPs-kaolinite heteroaggregates with surface charge heterogeneity led to the negligible transport of both kaolinite and AMPs when they were copresent in suspensions. The results of this study show that when plastic particles and kaolinite particles are copresent in natural environments, their interaction with each other will affect their transport behaviors in porous media. The alteration in the transport of MPs or kaolinite (either increased or decreased transport) is highly correlated with the surface charge of MPs.
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Affiliation(s)
- Meng Li
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, PR China
| | - Lei He
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, PR China
| | - Xiangwei Zhang
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, PR China
| | - Haifeng Rong
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, PR China
| | - Meiping Tong
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, PR China.
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Pradel A, Hadri HE, Desmet C, Ponti J, Reynaud S, Grassl B, Gigault J. Deposition of environmentally relevant nanoplastic models in sand during transport experiments. CHEMOSPHERE 2020; 255:126912. [PMID: 32408126 DOI: 10.1016/j.chemosphere.2020.126912] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Revised: 04/17/2020] [Accepted: 04/26/2020] [Indexed: 06/11/2023]
Abstract
Nanoplastics (NPTs) are defined as colloids that originated from the unintentional degradation of plastic debris. To understand the possible risks caused by NPTs, it is crucial to determine how they are transported and where they may finally accumulate. Unfortunately, although most sources of plastic are land-based, risk assessments concerning NPTs in the terrestrial environmental system (soils, aquifers, freshwater sediments, etc.) have been largely lacking compared to studies concerning NPTs in the marine system. Furthermore, an important limitation of environmental fate studies is that the NPT models used are questionable in terms of their environmental representativeness. This study describes the fate of different NPT models in a porous media under unfavorable (repulsive) conditions, according to their physical and chemical properties: average hydrodynamic diameters (200-460 nm), composition (polystyrene with additives or primary polystyrene) and shape (spherical or polymorphic). NPTs that more closely mimic environmental NPTs present an inhomogeneous shape (i.e., deviating from a sphere) and are more deposited in a sand column by an order of magnitude. This deposition was attributed in part to physical retention, as confirmed by the straining that occurred for the larger size fractions. Additionally, different Derjaguin-Landau-Verwey-Overbeek (DLVO) models -the extended DLVO (XDLVO) and a DLVO modified by surface element integration (SEI) method-suggest that the environmentally relevant NPT models may alter its orientation to diminish repulsion from the sand surface and may find enough kinetic energy to deposit in the primary energetic minimum. These results point to the importance of choosing environmentally relevant NPT models.
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Affiliation(s)
- Alice Pradel
- Univ Rennes, CNRS, Géosciences Rennes - UMR 6118, 35000, Rennes, France.
| | - Hind El Hadri
- CNRS/ Univ Pau & Pays Adour/ E2S UPPA, Institut des sciences analytiques et de physicochimie pour l'environnement et les matériaux, UMR 5254, 64000, Pau, France
| | - Cloé Desmet
- European Commission, Joint Research Centre (JRC), Via E. Fermi 2749, 21027, Ispra, VA, Italy
| | - Jessica Ponti
- European Commission, Joint Research Centre (JRC), Via E. Fermi 2749, 21027, Ispra, VA, Italy
| | - Stéphanie Reynaud
- CNRS/ Univ Pau & Pays Adour/ E2S UPPA, Institut des sciences analytiques et de physicochimie pour l'environnement et les matériaux, UMR 5254, 64000, Pau, France
| | - Bruno Grassl
- CNRS/ Univ Pau & Pays Adour/ E2S UPPA, Institut des sciences analytiques et de physicochimie pour l'environnement et les matériaux, UMR 5254, 64000, Pau, France
| | - Julien Gigault
- Univ Rennes, CNRS, Géosciences Rennes - UMR 6118, 35000, Rennes, France.
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Georgopoulou MP, Syngouna VI, Chrysikopoulos CV. Influence of graphene oxide nanoparticles on the transport and cotransport of biocolloids in saturated porous media. Colloids Surf B Biointerfaces 2020; 189:110841. [DOI: 10.1016/j.colsurfb.2020.110841] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 12/28/2019] [Accepted: 02/01/2020] [Indexed: 01/19/2023]
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Syngouna VI, Giannadakis GI, Chrysikopoulos CV. Interaction of graphene oxide nanoparticles with quartz sand and montmorillonite colloids. ENVIRONMENTAL TECHNOLOGY 2020; 41:1127-1138. [PMID: 30198818 DOI: 10.1080/09593330.2018.1521876] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 08/20/2018] [Indexed: 06/08/2023]
Abstract
Graphene oxide (GO) nanomaterials are used extensively in a wide range of commercial applications. With GO production growing rapidly, it is expected that GO eventually could reach sensitive environmental systems, including subsurface formations, where montmorillonite, one of the most common minerals, is in abundance. This study examines the interaction of GO with quartz sand and montmorillonite (MMT) colloids at pH = 7, ionic strength IS = 2 mM, and 25°C, under dynamic conditions. Moreover, the effect of pH on MMT kinetic attachment onto quartz sand was investigated. The experimental data suggested that pH affected slightly the attachment of MMT colloids onto quartz sand. GO was attached in greater amounts onto MMT than quartz sand. Also, the attachment of GO onto quartz sand was shown to increase slightly in the presence of MMT colloids. However, when GO and MMT coexisted, the total GO mass attached onto quartz sand, suspended MMT, and attached MMT was increased. Furthermore, the equilibrium attachment experimental data were fitted nicely with a Freundlich isotherm, and the attachment kinetics were satisfactorily described with a pseudo-second-order model. Finally, the extended DLVO (XDLVO) theory was used to quantify the various interaction energy profiles based on electrokinetic and hydrodynamic measurements.
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Affiliation(s)
- Vasiliki I Syngouna
- School of Environmental Engineering, Technical University of Crete, Chania, Greece
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Qin Y, Wen Z, Zhang W, Chai J, Liu D, Wu S. Different roles of silica nanoparticles played in virus transport in saturated and unsaturated porous media. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 259:113861. [PMID: 31918138 DOI: 10.1016/j.envpol.2019.113861] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 12/14/2019] [Accepted: 12/19/2019] [Indexed: 05/24/2023]
Abstract
Because of the complexity of contaminants infiltrating groundwater, it is necessary to study the co-transport of contaminants in the vadose and saturated zones. To investigate the role of inorganic colloids in the transport of biocolloids through porous media, a series of experiments were performed using columns packed with sand. The Escherichia coli phage (E. coli phage) was used as the model virus and silica as the model colloid in this study. The model virus exhibited a higher degree of attachment when compared with silica under similar experimental conditions. Under unsaturated flow conditions, the degree of virus retention was higher than in the corresponding saturated flow case, regardless of the presence of silica. Mass recovery and breakthrough curve data showed that silica hindered virus transport in saturated porous media. The model virus exhibited a higher degree of retention in the presence of silica. This could be related to pore structure changes caused by aggregated virus-silica particles located within the pores of the sand. Conversely, the suspended virus retained at the air-water interface provided new retention sites for other colloids; the retention was observed to be higher in the presence of colloidal silica in the saturated columns. In the corresponding unsaturated experiments, silica was observed to play the opposite function with respect to virus transport, which demonstrated that silica facilitated virus transport in the presence of unsaturated porous media. Capillary forces were stronger than the virus-silica interactions, and inhibited the aggregation of particles. Suspended silica competes with the virus for sorption sites because of a high affinity for the air-water interface. This competition inhibits virus retention by electrostatic repulsion of like-charged particles, and concomitantly facilitates virus transport under unsaturated conditions.
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Affiliation(s)
- Yunqi Qin
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, China; College of New Energy and Environment, Jilin University, Changchun, 130021, China
| | - Zong Wen
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, China; College of New Energy and Environment, Jilin University, Changchun, 130021, China
| | - Wenjing Zhang
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, China; College of New Energy and Environment, Jilin University, Changchun, 130021, China.
| | - Juanfen Chai
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, China; College of New Energy and Environment, Jilin University, Changchun, 130021, China
| | - Dan Liu
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, China; College of New Energy and Environment, Jilin University, Changchun, 130021, China
| | - Shengyu Wu
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, China; College of New Energy and Environment, Jilin University, Changchun, 130021, China
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Loukopoulos-Kousis V, Chrysikopoulos CV. Use of GreenZyme® for remediation of porous media polluted with jet fuel JP-5. ENVIRONMENTAL TECHNOLOGY 2020; 41:277-286. [PMID: 29969373 DOI: 10.1080/09593330.2018.1497092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2018] [Accepted: 06/26/2018] [Indexed: 06/08/2023]
Abstract
Jet fuel may be released in the environment either by in-flight fuel jettisoning (fuel dumping) or accidentally from spills and leaks, and eventually can reach subsurface formations where it can remain as long-term source of pollution. Remediation of aquifers contaminated by jet fuels is not a trivial task. This experimental study examined the effectiveness of a water-soluble, DNA-protein-based biodegradable non-living catalyst, with commercial name GreenZyme® for the remediation of water saturated porous media polluted with jet fuel (JP-5). Also for comparison purposes, the commercial surfactant sodium dodecyl sulfate (SDS) was used. Bench scale experiments were conducted in a glass column packed with glass beads. The migration of JP-5 in the glass column under various conditions, with and without the presence of GreenZyme® was monitored by a well-established photographic method. Digital photographs of the packed column were captured under fluorescent lighting. The fluorescent intensity of JP-5 dyed with Red Oil O within the column was analyzed using the Matlab Image Processing Toolbox. The colour intensities were converted to concentrations via appropriate calibration curves. The experimental results suggested that GreenZyme® was an efficient biosurfactant capable of enhancing significantly the migration of JP-5 in the glass column, which performed considerably better that SDS under the experimental conditions of this study.
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Rastghalam ZS, Yan C, Shang J, Cheng T. Nanoscale titanium dioxide (nTiO2) aggregation and transport in the co-presence of dissolved phosphate, illite colloid, and Fe oxyhydroxide coating. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.06.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Syngouna VI, Chrysikopoulos CV. Bacteriophage MS2 and titanium dioxide heteroaggregation: Effects of ambient light and the presence of quartz sand. Colloids Surf B Biointerfaces 2019; 180:281-288. [DOI: 10.1016/j.colsurfb.2019.04.052] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 04/22/2019] [Accepted: 04/25/2019] [Indexed: 01/21/2023]
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Xu N, Huangfu X, Li Z, Wu Z, Li D, Zhang M. Nanoaggregates of silica with kaolinite and montmorillonite: Sedimentation and transport. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 669:893-902. [PMID: 30970456 DOI: 10.1016/j.scitotenv.2019.03.099] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 03/02/2019] [Accepted: 03/07/2019] [Indexed: 06/09/2023]
Abstract
Due to a wide range of applications in industrial fields, engineered nanomaterials (ENMs) have a high potential to enter the soil. The soil's major component of clay likely dictates the fate and transport of ENMs in the subsurface. Currently, few studies are available on the fate and transport of nanoparticle silica (nSiO2) in the presence of clay particles. Therefore, the sedimentation and transport of nSiO2 with two representative clays (montmorillonite (M) and kaolin (K)) in porous media were investigated in monovalent (Na+) and divalent (Ca2+) ion solutions with multiple characterizations including SEM/TEM-EDX, zeta potentials, particle sizes and colloid transport modeling. It was shown that nSiO2-nSiO2 homoaggregates and nSiO2-K (or M) heteroaggregates dominated in the nSiO2-clay nanoaggregate suspension. A distinct decrease in the stability and transport of nSiO2-M (or K) in NaCl solution and an increase in CaCl2 occurred when M or K was added to the nSiO2 suspension at pH 6.0. This was attributed to the faster settlement of the individual M or K in NaCl vs. the better stability in CaCl2 (compared to nSiO2 alone). Particularly, more negative individual M platelets occurred in the high NaCl solution until extensive flocculated structures built up, which contributed to the faster deposition of nSiO2-M compared to nSiO2-K, even though the nSiO2-M was more negatively charged. Comparably, the effect of M and K on the fate and transport of nSiO2 almost disappeared at pH 9.0. The values of the first-order attachment/detachment rate coefficients (k1/k1d) and first-order straining coefficient (k2) obtained from two-site kinetic attachment model fitting are responsible for the deposition of nSiO2-clay nanoaggregates in sand. This study suggests potential groundwater contamination due to the clay-facilitated transport of ENMs in calcareous soil.
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Affiliation(s)
- Nan Xu
- Jiangsu Key Laboratory of Environmental Functional Materials, School of Chemistry Biology and Material Engineering, Suzhou University of Science and Technology, Suzhou 215009, China.
| | - Xinxing Huangfu
- Jiangsu Key Laboratory of Environmental Functional Materials, School of Chemistry Biology and Material Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Zuling Li
- Jiangsu Key Laboratory of Environmental Functional Materials, School of Chemistry Biology and Material Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Zhengying Wu
- Jiangsu Key Laboratory of Environmental Functional Materials, School of Chemistry Biology and Material Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Duo Li
- Jiangsu Key Laboratory of Environmental Functional Materials, School of Chemistry Biology and Material Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Mo Zhang
- Jiangsu Key Laboratory of Environmental Functional Materials, School of Chemistry Biology and Material Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
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Betancourt WQ, Schijven J, Regnery J, Wing A, Morrison CM, Drewes JE, Gerba CP. Variable non-linear removal of viruses during transport through a saturated soil column. JOURNAL OF CONTAMINANT HYDROLOGY 2019; 223:103479. [PMID: 30992142 DOI: 10.1016/j.jconhyd.2019.04.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Revised: 03/04/2019] [Accepted: 04/08/2019] [Indexed: 05/24/2023]
Abstract
Reduction of viral surrogates (bacteriophage MS2 and murine norovirus-1 [MNV-1]) and viruses naturally present in wastewater (enteroviruses, adenoviruses, Aichi viruses, reovirus, pepper mild mottle virus) was studied in a long-term experiment simulating soil-aquifer treatment of a non-disinfected secondary treated wastewater effluent blend using a 4.4 m deep saturated soil column (95% sand, 4% silt, 1% clay) with a hydraulic residence time of 15.4 days under predominantly anoxic redox conditions. Water samples were collected over a four-week period from the column inflow and outflow as well as from seven intermediate sampling ports at different depths. Removal of MS2 was 3.5 log10 over 4.4 m and removal of MNV-1 was 3 log10 over 0.3 m. Notably, MNV-1 was removed to below detection limit within 0.3 m of soil passage. In secondary treated wastewater effluent, MNV-1 RNA and MS2 RNA degraded at a first-order rate of 0.59 day-1 and 0.12 day-1, respectively. In 15.4 days, the time to pass the soil column, the RNA-degradation of MS2 would amount to 0.8 log10, and in one day that of MNV-1 0.3 log10 implying that attachment of MNV-1 and MS2 to the sandy soil took place. Among the indigenous viruses, genome copies reductions were observed for Aichi virus (4.9 log10) and for pepper mild mottle virus (4.4 log10). This study demonstrated that under saturated flow and predominantly anoxic redox conditions MS2 removal was non-linear and could be described well by a power-law relation. Pepper mild mottle virus was removed less than all of the other viruses studied, which substantiates field studies at managed aquifer recharge sites, suggesting it may be a conservative model/tracer for enteric virus transport through soil.
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Affiliation(s)
- Walter Q Betancourt
- Department of Soil, Water and Environmental Science, The University of Arizona, Tucson, AZ, United States.
| | - Jack Schijven
- Chair Quantitative Microbial Water Safety, Environmental Hydrogeology Group, Faculty of Geosciences, Utrecht University, The Netherlands
| | - Julia Regnery
- Department of Civil and Environmental Engineering, Colorado School of Mines, Golden, CO, United States
| | - Alexandre Wing
- Department of Civil and Environmental Engineering, Colorado School of Mines, Golden, CO, United States; Copper Environmental Consulting, Anaconda, MT, United States
| | - Christina M Morrison
- Department of Soil, Water and Environmental Science, The University of Arizona, Tucson, AZ, United States
| | - Jörg E Drewes
- Department of Civil and Environmental Engineering, Colorado School of Mines, Golden, CO, United States; Chair of Urban Water Systems Engineering, Technical University of Munich, Garching, Germany
| | - Charles P Gerba
- Department of Soil, Water and Environmental Science, The University of Arizona, Tucson, AZ, United States
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Yan C, Cheng T, Shang J. Effect of bovine serum albumin on stability and transport of kaolinite colloid. WATER RESEARCH 2019; 155:204-213. [PMID: 30849734 DOI: 10.1016/j.watres.2019.02.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 01/29/2019] [Accepted: 02/12/2019] [Indexed: 06/09/2023]
Abstract
The stability and transport of clay colloids in groundwater are strongly influenced by colloid interactions with dissolved organic matter (DOM). Protein is an important DOM component that is ubiquitous in natural water, reclaimed water, and soil solutions. To date, the interactions between clay colloids and proteins have not been fully studied. The objective of this study was to examine the effect of bovine serum albumin (BSA), a representative protein, on the stability, aggregation, and transport of kaolinite colloids under neutral pH conditions. Hydrodynamic diameter and ζ-potential measurements, stability tests, and column transport experiments were performed in salt solutions with a range of ionic strengths and different BSA concentrations at pH 7. Additionally, BSA-kaolinite colloid interactions were studied using TEM and batch adsorption experiments. The experimental results showed that BSA prevented colloid aggregation and increased the stability and transport of colloids, especially at high ionic strength, even though the charges of kaolinite colloids were less negative in the presence of BSA. Theoretical calculation of the interaction energies indicated that XDLVO theory, in which the steric force is considered due to BSA adsorption, could correctly quantify the interaction energies in the presence of BSA. This study demonstrated that the role of protein needs to be determined in order to better predict the overall effect of DOM on particle aggregation and transport in the soil environment.
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Affiliation(s)
- Chaorui Yan
- Department of Soil and Water Sciences, China Agricultural University, Beijing, 100193, PR China
| | - Tao Cheng
- Department of Earth Sciences, Memorial University St. John's, Newfoundland and Labrador, A1B 3X5, Canada
| | - Jianying Shang
- Department of Soil and Water Sciences, China Agricultural University, Beijing, 100193, PR China.
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Dang HT, Tarabara VV. Virus deposition onto polyelectrolyte-coated surfaces: A study with bacteriophage MS2. J Colloid Interface Sci 2019; 540:155-166. [DOI: 10.1016/j.jcis.2018.12.107] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 12/30/2018] [Accepted: 12/31/2018] [Indexed: 12/13/2022]
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Fauvel B, Cauchie HM, Gantzer C, Ogorzaly L. Influence of physico-chemical characteristics of sediment on the in situ spatial distribution of F-specific RNA phages in the riverbed. FEMS Microbiol Ecol 2019; 95:5289377. [PMID: 30649274 PMCID: PMC6333113 DOI: 10.1093/femsec/fiy240] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 01/11/2019] [Indexed: 11/30/2022] Open
Abstract
Riverbed sediment is commonly described as an enteric virus reservoir and thought to play an important role in water column contamination, especially during rainfall events. Although the occurrence and fate of faecal-derived viruses are fairly well characterized in water, little information is available on their presence as their interactions with sediment. This study aimed at determining the main environmental factors responsible for the presence of enteric viruses in riverbed sediment. Using a combination of microbiological and physico-chemical analyses of freshly field-sampled sediments, we demonstrated their contamination by faecal phages. The in situ spatial distribution of phages in sediment was mainly driven by sediment composition. A preferential phage accumulation occurred along one bank of the river, where the quantity of fine sands and clay particles smaller than 0.2 mm was the highest. Additionally, a mineralogical analysis revealed the influence of the heterogeneous presence of virus sorbents such as quartz, calcite, carbonates and iron-bearing phases (goethite) on the phage spatial pattern. A more precise knowledge of the composition of riverbed sediment is therefore useful for predicting preferential areas of enteric virus accumulation and should allow more accurate microbial risk assessment when using surface water for drinking water production or recreational activities.
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Affiliation(s)
- Blandine Fauvel
- Luxembourg Institute of Science and Technology (LIST), Department of Environmental Research and Innovation (ERIN), 5 Avenue des Hauts-Fourneaux, 4362 Esch-sur-Alzette, LUXEMBOURG.,Université de Lorraine, Laboratoire de Chimie, Physique et Microbiologie pour les Matériaux et l'Environnement (LCPME), UMR 7564, Faculté de Pharmacie, 5 Rue Albert Lebrun BP 80403 54001 Nancy, FRANCE.,CNRS, LCPME, UMR 7564, Nancy F-54000, France
| | - Henry-Michel Cauchie
- Luxembourg Institute of Science and Technology (LIST), Department of Environmental Research and Innovation (ERIN), 5 Avenue des Hauts-Fourneaux, 4362 Esch-sur-Alzette, LUXEMBOURG
| | - Christophe Gantzer
- Université de Lorraine, Laboratoire de Chimie, Physique et Microbiologie pour les Matériaux et l'Environnement (LCPME), UMR 7564, Faculté de Pharmacie, 5 Rue Albert Lebrun BP 80403 54001 Nancy, FRANCE.,CNRS, LCPME, UMR 7564, Nancy F-54000, France
| | - Leslie Ogorzaly
- Luxembourg Institute of Science and Technology (LIST), Department of Environmental Research and Innovation (ERIN), 5 Avenue des Hauts-Fourneaux, 4362 Esch-sur-Alzette, LUXEMBOURG
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Rastghalam ZS, Cheng T, Freake B. Fine particle attachment to quartz sand in the presence of multiple interacting dissolved components. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 645:499-508. [PMID: 30029125 DOI: 10.1016/j.scitotenv.2018.07.131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 07/04/2018] [Accepted: 07/10/2018] [Indexed: 06/08/2023]
Abstract
In natural aquatic systems water chemistry is complicated and fine particles encounter multiple water components simultaneously, yet the combined effects of some multiple components on the fate and transport of these particles have not been elucidated. In this study nTiO2 and illite colloid attachment to quartz sand was investigated in 1 mM NaCl and 0.5 mM CaCl2 background solutions using a range of phosphate concentrations (0 to 10 mg/L) at pH 5 and 9. The results obtained from the batch experiments indicated that without using phosphate, nTiO2 aggregation and attachment was strongly influenced by pH and Ca2+, both of which modified nTiO2 surface charges. nTiO2 attachment was high in CaCl2 solution at pH 9 due to attractive forces between nTiO2 and sand, as well as ripening. Furthermore, phosphate adsorption to nTiO2 was higher in CaCl2 solution at pH 9 than that at pH 5 due to attractive forces between nTiO2 and phosphate anions, and also potential surface precipitation of Ca-P minerals at pH 9. Phosphate adsorption to illite was low owing to strong repulsive forces between illite and phosphate. The effect of phosphate on nTiO2 and illite attachment to sand was influenced by pH and cation valency. A decreasing trend in nTiO2 attachment with phosphate addition was observed in NaCl solution at pH 5 and 9, and in CaCl2 solution at pH 5; however, in CaCl2 solution at pH 9, the surface charge of nTiO2 reversed from negative to positive and a substantial amount of nTiO2 attached to sand. Moreover, illite attachment to sand was much lower than that of nTiO2 under all the conditions tested in this study. These findings are important for understanding of the fate and transport of nTiO2 and illite colloids in natural aquatic systems where various anions and cations co-exist.
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Affiliation(s)
- Zahra Sadat Rastghalam
- Department of Earth Sciences, Memorial University of Newfoundland, St. John's, Newfoundland and Labrador A1B 3X5, Canada
| | - Tao Cheng
- Department of Earth Sciences, Memorial University of Newfoundland, St. John's, Newfoundland and Labrador A1B 3X5, Canada.
| | - Bradley Freake
- Department of Earth Sciences, Memorial University of Newfoundland, St. John's, Newfoundland and Labrador A1B 3X5, Canada
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41
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Valsala R, Govindarajan SK. Co-colloidal BTEX and Microbial Transport in a Saturated Porous System: Numerical Modeling and Sensitivity Analysis. Transp Porous Media 2018. [DOI: 10.1007/s11242-018-1191-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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42
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Norgaard T, Paradelo M, Moldrup P, Katuwal S, de Jonge LW. Particle Leaching Rates from a Loamy Soil Are Controlled by the Mineral Fines Content and the Degree of Preferential Flow. JOURNAL OF ENVIRONMENTAL QUALITY 2018; 47:1538-1545. [PMID: 30512051 DOI: 10.2134/jeq2018.02.0065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The mobilization and transport of colloid particles in soils can have negative agronomic and environmental effects. This work investigates the controls of particle release and transport from undisturbed soil columns sampled from an agricultural, loamy field with clay and silt contents of 0.05 to 0.14 and 0.07 to 0.16 kg kg, respectively. Forty-five soil columns (20 × 20 cm) were collected from the field and exposed to a constant irrigation of 10 mm h for 8 h. The accumulated mass of particles in the outflow from each column was highly correlated ( = 0.88) with the volumetric mass of fines (MF). The MF is defined as the sum of clay and fine silt (<20 μm) multiplied by the soil bulk density and divided by the particle density of the mineral fines. Thereby, MF represents both the particle source available for mobilization and leaching and an indicator of soil structure. The particle release process showed two linear particle release rates. Although the two particle release rates were distinctly different, both were strongly correlated with MF. The difference between the two rates was related to the degree of preferential flow characterized by the 5% arrival time of an applied tracer pulse. Soil columns with a longer 5% arrival time (less preferential flow) showed a distinct difference between the two rates, whereas soil columns with a short 5% arrival time and fast water transport showed resemblance between the two particle release rates. Thus, the combined effects of particle source, type, and pathways (via soil structure and compaction) need consideration to understand and predict particle transport dynamics through intact topsoil.
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43
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Xie B, Jiang Y, Zhang Z, Cao G, Sun H, Wang N, Wang S. Co-transport of Pb (II) and Cd (II) in saturated porous media: effects of colloids, flow rate and grain size. CHEMICAL SPECIATION & BIOAVAILABILITY 2018. [DOI: 10.1080/09542299.2018.1531727] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Bingyi Xie
- College of Natural Resources and Environment, Northwest A&F University, Yangling, China
| | - Yanji Jiang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, China
| | - Zhe Zhang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, China
| | - Gang Cao
- College of Natural Resources and Environment, Northwest A&F University, Yangling, China
| | - Huimin Sun
- College of Natural Resources and Environment, Northwest A&F University, Yangling, China
- Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, China
| | - Nong Wang
- Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin, China
| | - Shengsen Wang
- School of Environmental Science and Engineering, Yangzhou University, Yangzhou, China
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44
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Won J, Burns SE. Role of Immobile Kaolinite Colloids in the Transport of Heavy Metals. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:2735-2741. [PMID: 29400458 DOI: 10.1021/acs.est.7b05631] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Predicting the transport of contaminants in porous media is crucial to protecting public health and remediating contaminated soil and groundwater. However, the prediction of contaminant transport is challenging due to the presence of mobile and immobile colloids. The work performed in this experimental investigation quantified the role of immobile clay colloids on metal transport through sets of column breakthrough experiments under varying solution chemistry, clay content, and flow rate. Georgia kaolinite was chosen as the colloidal material, and Pb(II) was chosen as the dissolved contaminant. The silica sand used as the bed material was sized to ensure that the kaolinite colloids remained stationary during the column experiments. Results indicated that retardation of the Pb(II) breakthrough curve was observed as ionic strength decreased and kaolinite content and pH increased, while no significant variation of Pb(II) breakthrough was observed at any kaolinite content as flow rate decreased. This work demonstrated that, in the presence of immobile kaolinite colloids, Pb(II) breakthrough curves strongly depended on the pH and ionic strength, which controlled the charge on the surface functional groups and the surface availability of metal adsorption sites on immobile kaolinite colloids. In addition, the evaluation of unknown first-order coefficients in the continuum governing equation, bed efficiency, and Pb(II) saturation provided a quantitative description of Pb(II) breakthrough curves.
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Affiliation(s)
- Jongmuk Won
- School of Civil and Environmental Engineering , Georgia Institute of Technology , 790 Atlantic Drive, N.W. , Atlanta , Georgia 30332-0355 , United States
| | - Susan E Burns
- School of Civil and Environmental Engineering , Georgia Institute of Technology , 790 Atlantic Drive, N.W. , Atlanta , Georgia 30332-0355 , United States
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45
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Zhang W, Li S, Wang S, Lei L, Yu X, Ma T. Transport of Escherichia coli phage through saturated porous media considering managed aquifer recharge. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:6497-6513. [PMID: 29255976 DOI: 10.1007/s11356-017-0876-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 11/29/2017] [Indexed: 06/07/2023]
Abstract
Virus is one of the most potentially harmful microorganisms in groundwater. In this paper, the effects of hydrodynamic and hydrogeochemical conditions on the transportation of the colloidal virus considering managed aquifer recharge were systematically investigated. Escherichia coli phage, vB_EcoM-ep3, has a broad host range and was able to lyse pathogenic Escherichia coli. Bacteriophage with low risk to infect human has been found extensively in the groundwater environment, so it is considered as a representative model of groundwater viruses. Laboratory studies were carried out to analyze the transport of the Escherichia coli phage under varying conditions of pH, ionic strength, cation valence, flow rate, porous media, and phosphate buffer concentration. The results indicated that decreasing the pH will increase the adsorption of Escherichia coli phage. Increasing the ionic strength, either Na+ or Ca2+, will form negative condition for the migration of Escherichia coli phage. A comparison of different cation valence tests indicated that changes in transport and deposition were more pronounced with divalent Ca2+ than monovalent Na+. As the flow rate increases, the release of Escherichia coli phage increases and the retention of Escherichia coli phage in the aquifer medium reduces. Changes in porous media had a significant effect on Escherichia coli phage migration. With increase of phosphate buffer concentration, the suspension stability and migration ability of Escherichia coli phage are both increased. Based on laboratory-scale column experiments, a one-dimensional transport model was established to quantitatively describe the virus transport in saturated porous medium.
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Affiliation(s)
- Wenjing Zhang
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, China.
- College of Environment and Resources, Jilin University, Changchun, 130021, China.
| | - Shuo Li
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, China
- College of Environment and Resources, Jilin University, Changchun, 130021, China
| | - Shuang Wang
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, 130062, China
| | - Liancheng Lei
- Key Laboratory of Zoonosis, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, 130062, China
| | - Xipeng Yu
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, China
- College of Environment and Resources, Jilin University, Changchun, 130021, China
| | - Tianyi Ma
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, China
- College of Environment and Resources, Jilin University, Changchun, 130021, China
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Masciopinto C, Visino F. Strong release of viruses in fracture flow in response to a perturbation in ionic strength: Filtration/retention tests and modeling. WATER RESEARCH 2017; 126:240-251. [PMID: 28961492 DOI: 10.1016/j.watres.2017.09.035] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 09/18/2017] [Accepted: 09/19/2017] [Indexed: 06/07/2023]
Abstract
Effluents derived from a municipal wastewater treatment plant were used for virus filtration/retention experiments by using a horizontal laboratory filter. Filtration tests were performed to examine how soil geochemical heterogeneity and fracture patterns affected the transport of viruses in groundwater in order to model the influence of reductive perturbations in ionic strength (IS) during wastewater filtration. Although perturbations of IS and velocity are known to result in resuspension of colloids, we found that the effect of soil geochemical heterogeneity can produce strong and instantaneous virus releases in fractured aquifers, likely an internal additional source of viruses. Sixteen limestone slabs were packed in a PVC box filter at the Bari Laboratory (South Italy) to replicate wastewater filtration throughout a fractured medium similar to the Bari carbonate aquifer. Terra rossa, which is an aggregate of sand, silt and clay, was unevenly spread on the surface of each limestone slab within the filter. Since the mineralogical composition of terra rossa includes iron (hematite, magnetite, and goethite) oxides, the soil exhibited localized unfavorable colloid/collector interactions for attachment. In contrast, soil-free parts of the fracture surfaces maintained favorable colloid/collector interactions. We found in our experiments that the lowering of IS due to the reduction of water salt content, which could occur during runoff injections after rainfall, might be sufficient to cause strong detachment of viruses from fracture surfaces, allowing further migration into the groundwater. The model in this work can predict the count and pathways of released viruses in groundwater fractures under soil geochemical heterogeneity and originated by reductions of IS, by using analytical solutions.
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Affiliation(s)
- Costantino Masciopinto
- Consiglio Nazionale delle Ricerche, Istituto di Ricerca Sulle Acque, Reparto di Chimica e Tecnologia delle Acque, 5 via Francesco De Blasio, 70132 Bari, Italy.
| | - Fabrizio Visino
- Consiglio Nazionale delle Ricerche, Istituto di Ricerca Sulle Acque, Reparto di Chimica e Tecnologia delle Acque, 5 via Francesco De Blasio, 70132 Bari, Italy.
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47
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Syngouna VI, Chrysikopoulos CV, Kokkinos P, Tselepi MA, Vantarakis A. Cotransport of human adenoviruses with clay colloids and TiO 2 nanoparticles in saturated porous media: Effect of flow velocity. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 598:160-167. [PMID: 28441594 DOI: 10.1016/j.scitotenv.2017.04.082] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 04/10/2017] [Accepted: 04/11/2017] [Indexed: 06/07/2023]
Abstract
This study focuses on the effects of two clay colloids (kaolinite, KGa-1b and montmorillonite, STx-1b) and titanium dioxide (TiO2) nanoparticles (NPs) on human adenovirus transport and retention in water saturated porous media at three different pore water velocities (0.38, 0.74, and 1.21cm/min). Transport and cotransport experiments were performed in 30-cm long laboratory columns packed with clean glass beads with 2mm diameter. The experimental results suggested that the presence of KGa-1b, STx-1b and TiO2 NPs increased human adenovirus inactivation and attachment onto the solid matrix, due to the additional attachment sites available. Retention by the packed column was found to be highest (up to 99%) in the presence of TiO2 NPs at the highest pore water velocity, and lowest in the presence of KGa-1b. The experimental results suggested that adenoviruses would undergo substantial aggregation or heteroaggregation during cotransport. However, no distinct relationships between mass recoveries and water velocity could be established from the experimental cotransport data. Note that for the cotransport experiments, collision efficiency values were shown to be higher for the higher flow rate examined in this study.
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Affiliation(s)
- Vasiliki I Syngouna
- School of Environmental Engineering, Technical University of Crete, 73100 Chania, Greece.
| | | | - Petros Kokkinos
- Environmental Microbiology Unit, Department of Public Health, University of Patras, 26500 Patras, Greece
| | - Maria A Tselepi
- Environmental Microbiology Unit, Department of Public Health, University of Patras, 26500 Patras, Greece
| | - Apostolos Vantarakis
- Environmental Microbiology Unit, Department of Public Health, University of Patras, 26500 Patras, Greece
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48
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Wong K, Molina M. Applying Quantitative Molecular Tools for Virus Transport Studies: Opportunities and Challenges. GROUND WATER 2017; 55:778-783. [PMID: 28542984 PMCID: PMC6146963 DOI: 10.1111/gwat.12531] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 04/02/2017] [Accepted: 04/05/2017] [Indexed: 05/31/2023]
Abstract
Bacteriophages have been used in soil column studies for the last several decades as surrogates to study the fate and transport behavior of enteric viruses in groundwater. However, recent studies have shown that the transport behavior of bacteriophages and enteric viruses in porous media can be very different. The next generation of virus transport science must therefore provide more data on mobility of enteric viruses and the relationship between transport behaviors of enteric viruses and bacteriophages. To achieve this new paradigm, labor intensity devoted to enteric virus quantification method must be reduced. Recent studies applied quantitative polymerase chain reaction (qPCR) to column filtration experiments to study the transport behavior of human adenovirus (HAdV) in porous media under a variety of conditions. A similar approach can be used to study the transport of other enteric viruses such as norovirus. Analyzing the column samples with both qPCR and culture assays and applying multiplex qPCR to study cotransport behavior of more than one virus will provide information to under-explored areas in virus transport science. Both nucleic acid extraction kits and one-step lysis protocols have been used in these column studies to extract viral nucleic acid for qPCR quantification. The pros and cons of both methods are compared herein and solutions for overcoming problems are suggested. As better understanding of the transport behavior of enteric viruses is clearly needed, we strongly advocate for application of rapid molecular tools in future studies as well as optimization of protocols to overcome their current limitations.
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Affiliation(s)
- Kelvin Wong
- Ecosystem Research Division, USEPA Office of Research and Development, National Exposure Research Laboratory, 960 College Station Road, Athens, GA, 30605
- Oak Ridge Institute for Science and Education, 1299 Bethel Valley Road, Oak Ridge, TN, 37831
| | - Marirosa Molina
- Ecosystem Research Division, USEPA Office of Research and Development, National Exposure Research Laboratory, 960 College Station Road, Athens, GA, 30605
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49
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Awad ME, López-Galindo A, Setti M, El-Rahmany MM, Iborra CV. Kaolinite in pharmaceutics and biomedicine. Int J Pharm 2017; 533:34-48. [DOI: 10.1016/j.ijpharm.2017.09.056] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2017] [Revised: 09/18/2017] [Accepted: 09/19/2017] [Indexed: 12/29/2022]
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50
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Syngouna VI, Chrysikopoulos CV. Inactivation of MS2 bacteriophage by titanium dioxide nanoparticles in the presence of quartz sand with and without ambient light. J Colloid Interface Sci 2017; 497:117-125. [DOI: 10.1016/j.jcis.2017.02.059] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 02/24/2017] [Accepted: 02/24/2017] [Indexed: 10/20/2022]
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