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Zhou D, Cai Y, Yang Z. Transport of polystyrene microplastics in bare and iron oxide-coated quartz sand: Effects of ionic strength, humic acid, and co-existing graphene oxide. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 946:174270. [PMID: 38925391 DOI: 10.1016/j.scitotenv.2024.174270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2024] [Revised: 06/21/2024] [Accepted: 06/22/2024] [Indexed: 06/28/2024]
Abstract
This research explored the effects of widely utilized nanomaterial graphene oxide (GO) and organic matter humic acid (HA) on the transport of microplastics under different ionic solution strengths in bare sand and iron oxide-coated sand. The results found transport of polystyrene microplastics (PS) did not respond to the presence of HA in sand that contains large amounts of iron oxide. Compared to bare quartz sand, ionic strength had little effect: <20 % of PS passed through Fe sand columns. There was a significant promotion of PS transport in the presence of GO, however, which can be attributed to the increased surface electronegativity of PS and steric hindrance. Moreover, GO combined with HA significantly promoted the transport of PS in the Fe sand, and transport further increased when the concentration of HA increased from 5 to 10 mg/L. Interestingly, the degree of this increase exactly corresponded to the change in the surface charge of the microplastics, demonstrating that electrostatic interaction dominated the PS transport. Further results indicated that co-existing pollutants had significant impacts on the transport of microplastics under various conditions by altering the surface characteristics of the plastic particles and the spatial steric hindrance within porous media. This research will offer insights into predicting the transport and fate of microplastics in complex environments.
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Affiliation(s)
- Dan Zhou
- State Key Laboratory of Water Environment Simulation, Beijing Normal University, Beijing 100875, China
| | - Yanpeng Cai
- Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou 510006, China; Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou 511458, China.
| | - Zhifeng Yang
- State Key Laboratory of Water Environment Simulation, Beijing Normal University, Beijing 100875, China; Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou 510006, China
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2
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Wang M, Bai Y, Zuo Q, Hu H. Comparison of engineered nanoparticle transport in columns of three different lengths: Transport experiments and multi-observation point modeling. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 954:176195. [PMID: 39270870 DOI: 10.1016/j.scitotenv.2024.176195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Revised: 08/08/2024] [Accepted: 09/09/2024] [Indexed: 09/15/2024]
Abstract
This study focuses on the effectiveness of commonly-used 15 cm column lengths for investigating nanoparticle transport in porous media. Experimental tests examined the transport and retention behaviors of two types of nanoparticles, graphene oxide (GO) and titanium dioxide (TiO2) nanoparticles, in saturated sand columns of different lengths (15, 30 and 45 cm), while considering key environmental factors like ionic strength (IS, 1-50 mM), flow rate (1-3 mL min-1), and grain size (150-850 μm). In the 15 cm columns, both GO and TiO2 transport decreased with higher IS and lower flow rate; grain size affected GO and TiO2 differently. Smaller grain size increased GO retention in the sand columns through straining, thus weakening GO mobility, whereas increased fluid shear force suppressed the ripening of TiO2, enhancing its migration. Similar environmental effects were noted in longer columns (30 and 45 cm), but fitted transport parameters (Smax and k) and predicted long-term mobility (Lmax) indicated that 15 cm columns might underestimate nanoparticle mobility. Blocking and ripening models based on single and multiple observation points to simulate nanoparticle transport and retention showed that predictions aligned well with experimental data. These results indicate that using combinations of columns of different lengths to achieve multiple observation points improves model prediction accuracy; in single-column experiments, the 45 cm and 30 cm columns respectively better predict the mobility range of GO and TiO2 compared to 15 cm columns.
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Affiliation(s)
- Mei Wang
- School of Water Conservancy and transportation, Zhengzhou University, Zhengzhou 450001, China
| | - Yifan Bai
- Yellow River Engineering Consulting Corporation Limited, Zhengzhou 450003, China
| | - Qiting Zuo
- School of Water Conservancy and transportation, Zhengzhou University, Zhengzhou 450001, China
| | - Hu Hu
- School of Water Conservancy and transportation, Zhengzhou University, Zhengzhou 450001, China.
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Geremew A, Palmer L, Johnson A, Reeves S, Brooks N, Carson L. Multi-functional copper oxide nanoparticles synthesized using Lagerstroemia indica leaf extracts and their applications. Heliyon 2024; 10:e30178. [PMID: 38726176 PMCID: PMC11078880 DOI: 10.1016/j.heliyon.2024.e30178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 04/19/2024] [Accepted: 04/22/2024] [Indexed: 05/12/2024] Open
Abstract
Developing multifunctional nanomaterials through environmentally friendly and efficient approaches is a pivotal focus in nanotechnology. This study aimed to employ a biogenic method to synthesize multifunctional copper oxide nanoparticles (LI-CuO NPs) with diverse capabilities, including antibacterial, antioxidant, and seed priming properties, as well as photocatalytic organic dye degradation and wastewater treatment potentials using Lagerstroemia indica leaf extract. The synthesized LI-CuO NPs were extensively characterized using UV-vis spectroscopy, dynamic light scattering (DLS), X-ray diffraction (XRD), scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDX), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and Fourier transform-infrared spectroscopy (FT-IR). The colloid displayed surface plasmon resonance peaks at 320 nm, characteristic of LI-CuO NPs. DLS analysis revealed an average particle size of 93.5 nm and a negative zeta potential of -20.3 mV. FTIR and XPS analyses demonstrated that LI-CuO NPs possessed abundant functional groups that acted as stabilizing agents. XRD analysis indicated pure crystalline and spherical LI-CuO NPs measuring 36 nm in size. Antibacterial tests exhibited significant differential activity of LI-CuO NPs against both gram-negative (Escherichia coli, Salmonella typhimurium) and gram-positive (Staphylococcus aureus and Listeria monocytogenes) bacteria. In antioxidant tests, the LI-CuO NPs demonstrated a remarkable radical scavenging activity of 97.6 % at a concentration of 400 μg mL-1. These nanoparticles were also found to enhance mustard seed germination at low concentrations. With a remarkable reusability, LI-CuO NPs exhibited excellent photocatalytic performance, with a degradation efficiency of 97.6 % at 150 μg/mL as well as a 95.6 % reduction in turbidity when applied to wastewater treatment. In conclusion, this study presents environmentally friendly method for the facile synthesis of LI-CuO NPs that could potentially offer promising applications in biomedicine, agriculture, and environmental remediation due to their multifunctional properties.
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Affiliation(s)
- Addisie Geremew
- Cooperative Agricultural Research Center, Prairie View A&M University, Prairie View, TX, 77446, USA
| | - Lenaye Palmer
- Cooperative Agricultural Research Center, Prairie View A&M University, Prairie View, TX, 77446, USA
| | - Andre Johnson
- Cooperative Agricultural Research Center, Prairie View A&M University, Prairie View, TX, 77446, USA
| | - Sheena Reeves
- Department of Chemical Engineering, College of Engineering, Prairie View A&M University, Prairie View, TX, 77446, USA
| | - Nigel Brooks
- Department of Chemical Engineering, College of Engineering, Prairie View A&M University, Prairie View, TX, 77446, USA
| | - Laura Carson
- Cooperative Agricultural Research Center, Prairie View A&M University, Prairie View, TX, 77446, USA
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Zhang M, Hou J, Xia J, Wu J, You G, Miao L. Statuses, shortcomings, and outlooks in studying the fate of nanoplastics and engineered nanoparticles in porous media respectively and borrowable sections from engineered nanoparticles for nanoplastics. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 915:169638. [PMID: 38181944 DOI: 10.1016/j.scitotenv.2023.169638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 12/20/2023] [Accepted: 12/21/2023] [Indexed: 01/07/2024]
Abstract
This review discussed the research statuses, shortcomings, and outlooks for the fate of nanoplastics (NPs) and engineered nanoparticles (ENPs) in porous media and borrowable sections from ENPs for NPs. Firstly, the most important section was that we reviewed the research statuses on the fate of NPs in porous media and the main influencing factors, and explained the influencing mechanisms. Secondly, in order to give NPs a reference of research ideas and influence mechanisms, we also reviewed the research statuses on the fate of ENPs in porous media and the factors and mechanisms influencing the fate. The main mechanisms affecting the transport of ENPs were summarized (Retention or transport modes: advection, diffusion, dispersion, deposition, adsorption, blocking, ripening, and straining; Main forces and actions: Brownian motion, gravity, electrostatic forces, van der Waals forces, hydration, filtration, bridging; Affecting elements of the forces and actions: the ENP and media grain surface functional groups, size, shape, zeta potential, density, hydrophobicity, and roughness). Instead of using the findings of ENPs, thorough study on NPs was required because NPs and ENPs differed greatly. Based on the limited existing studies on the NP transport in porous media, we found that although the conclusions of ENPs could not be applied to NPs, most of the influencing mechanisms summarized from ENPs were applicable to NPs. Combining the research thoughts of ENPs, the research statuses of NPs, and some of our experiences and reflections, we reviewed the shortcomings of the current studies on the NP fate in porous media as well as the outlooks of future research. This review is very meaningful for clarifying the research statuses and influence mechanisms for the NP fate in porous media, as well as providing a great deal of inspiration for future research directions about the NP fate in porous media.
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Affiliation(s)
- Mingzhi Zhang
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, People's Republic of China
| | - Jun Hou
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, People's Republic of China.
| | - Jun Xia
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, People's Republic of China
| | - Jun Wu
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, People's Republic of China
| | - Guoxiang You
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, People's Republic of China
| | - Lingzhan Miao
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, People's Republic of China
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Ramirez R, Martí V, Darbra RM. Aquatic Ecosystem Risk Assessment Generated by Accidental Silver Nanoparticle Spills in Groundwater. TOXICS 2023; 11:671. [PMID: 37624176 PMCID: PMC10459696 DOI: 10.3390/toxics11080671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 07/10/2023] [Accepted: 07/17/2023] [Indexed: 08/26/2023]
Abstract
This paper aims to create a new model for assessing the ecosystem risk in rivers and wetlands that are linked to accidental spills of silver nanoparticles (AgNPs) in soil/groundwater. Due to the uncertainty of the modeling inputs, a combination of two well-known risk assessment methodologies (Monte Carlo and fuzzy logic) were used. To test the new model, two hypothetical, accidental AgNP soil spill case studies were evaluated; both of which were located at the end of the Llobregat River basin within the metropolitan area of Barcelona (NE Spain). In both cases, the soil spill reached groundwater. In the first case, it was discharged into a river, and in the second case, it recharged a wetland. Concerning the results, in the first case study, a medium-risk assessment was achieved for most cases (83%), with just 10% of them falling below the future legal threshold concentration value. In the second case study, a high-risk assessment was obtained for most cases (84%), and none of the cases complied with the threshold value. A sensitivity analysis was conducted for the concentration and risk. The developed tool was proven capable of assessing risk in aquatic ecosystems when dealing with uncertain and variable data, which is an improvement compared to other risk assessment methodologies.
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Affiliation(s)
- Rosember Ramirez
- Resource Recovery and Environmental Management (R2EM), Department of Chemical Engineering, Universitat Politècnica de Catalunya-Barcelona Tech, Diagonal 647, 08028 Barcelona, Catalonia, Spain; (V.M.); (R.M.D.)
- Departamento de Ingeniería, Universidad Tecnológica del Chocó, Carrera 22 No.18B-10, Quibdó 270001, Colombia
| | - Vicenç Martí
- Resource Recovery and Environmental Management (R2EM), Department of Chemical Engineering, Universitat Politècnica de Catalunya-Barcelona Tech, Diagonal 647, 08028 Barcelona, Catalonia, Spain; (V.M.); (R.M.D.)
| | - R. M. Darbra
- Resource Recovery and Environmental Management (R2EM), Department of Chemical Engineering, Universitat Politècnica de Catalunya-Barcelona Tech, Diagonal 647, 08028 Barcelona, Catalonia, Spain; (V.M.); (R.M.D.)
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Chen J, Zhang Q, Zhu Y, Li Y, Chen W, Lu T, Qi Z. Biosurfactant-mediated mobility of graphene oxide nanoparticles in saturated porous media. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2022; 24:1883-1894. [PMID: 36148869 DOI: 10.1039/d2em00297c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
There is currently a lack of scientific understanding regarding how bio-surfactants influence the mobility of graphene oxide (GO) through saturated porous media. In this study, the transport characteristics of GO through porous media with different heterogeneities (i.e., quartz sand and goethite-coated sand) after the addition of saponin (a representative bio-surfactant) were investigated. The results demonstrated that saponin (3-10 mg L-1) promoted GO mobility in both types of porous media at pH 7.0. This trend was attributed to the competitive deposition between nanoparticles and bio-surfactant molecules for attachment sites, the enhanced electrostatic repulsion, the decreased strain, the presence of steric effects induced by the adsorbed saponin, and the increase in the hydrophilicity of nanoparticles. Intriguingly, saponin promoted GO mobility in goethite-coated sand (i.e., chemically heterogeneous porous media) to a greater extent than that in sand (i.e., relatively homogeneous porous media) when saponin concentrations increased, which stemmed from the differences in the extent of the deposition site competition for saponin on the two porous media and the electrostatic repulsion between GO and the porous media. Furthermore, a cation-bridging mechanism was also involved in the ability of saponin to increase GO mobility when the electrolyte solution was 0.1 mM Cu2+. Moreover, the extended Derjaguin-Landau-Verwey-Overbeek (XDLVO) theory and the colloid transport model were applicable to elucidate the mobility properties of GO with or without saponin in porous media. The findings from this work highlight the important status of bio-surfactants in the fate of colloidal carbon-based nanomaterials in subsurface systems.
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Affiliation(s)
- Jiuyan Chen
- College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou, 225009, China.
- Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China.
| | - Qiang Zhang
- Ecology Institute of the Shandong Academy of Sciences, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, China
| | - Yuwei Zhu
- Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China.
| | - Yanxiang Li
- The Testing Center of Shandong Bureau, China Metallurgical Geology Bureau, Jinan 250014, China
| | - Weifeng Chen
- Key Laboratory for Humid Subtropical Eco-geographical Processes of the Ministry of Education/Fujian Provincial Key Laboratory for Plant Eco-physiology/School of Geographical Sciences, Fujian Normal University, Fuzhou, Fujian 350007, China
| | - Taotao Lu
- College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou, 225009, China.
| | - Zhichong Qi
- Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China.
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Zhang R, Tu C, Zhang H, Luo Y. Enhancing effects of dissolved and media surface-bound organic matter on titanium dioxide nanoparticles transport in iron oxide-coated porous media under acidic conditions. JOURNAL OF HAZARDOUS MATERIALS 2022; 438:129421. [PMID: 35779396 DOI: 10.1016/j.jhazmat.2022.129421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 06/02/2022] [Accepted: 06/17/2022] [Indexed: 06/15/2023]
Abstract
Natural organic matter (NOM) and iron oxides have been proved to be crucial factors controlling the behaviors of nanoparticles in heterogenous environment. Here, we conducted experimental and modeling study on the transport of titanium dioxide nanoparticles (TiO2 NPs) in iron oxide-coated quartz in the presence of NOM under acidic conditions. Results showed the antagonistic effects of iron oxides and NOM on TiO2 NPs mobility. The inhibition of iron oxides coated on quartz was crystal form-dependent other than quantity-dependent. Amorphous ferric oxyhydroxide with higher specific surface area brought more positive charge and favorable deposition sites onto quartz, and induced more retention of nanoparticles than two crystalline iron oxides, goethite and hematite. Dissolved organic matter (DOM) facilitated TiO2 NPs transport in iron oxide-coated quartz. In comparation with the limited enhancing effects of DOM, the NOM coatings on media surface partially or largely offset the inhibition of goethite on nanoparticles mobility through direct occupation of attachment sites and sites screening due to the steric repulsion of the macromolecules. Owing to the higher steric hindrance, humic acid, both in dissolved and media surface-bound states, exerted stronger facilitating effects on TiO2 NPs mobility relative to fulvic acid.
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Affiliation(s)
- Ruichang Zhang
- Chemical Engineering and Pharmaceutics School, Henan University of Science and Technology, Luoyang 471023, PR China; Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Sciences, Chinese Academy of Sciences, Nanjing 210008, PR China; Luoyang Key Laboratory of Soil Pollution Remediation Engineering, Henan University of Science and Technology, Luoyang 471023, PR China
| | - Chen Tu
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China
| | - Haibo Zhang
- Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Zhejiang A&F University, Hangzhou 311300, PR China
| | - Yongming Luo
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Sciences, Chinese Academy of Sciences, Nanjing 210008, PR China; Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China.
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Jaberi N, Linley S, Thomson NR, McVey K, Sra K, Gu FX. Transport and targeted binding of Pluronic-coated nanoparticles in unsaturated porous media. JOURNAL OF CONTAMINANT HYDROLOGY 2022; 249:104046. [PMID: 35785549 DOI: 10.1016/j.jconhyd.2022.104046] [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: 02/11/2022] [Revised: 05/13/2022] [Accepted: 06/16/2022] [Indexed: 06/15/2023]
Abstract
The effectiveness of most in situ remedial technologies, including nanoremediation, lies on successful delivery of reagents to a subsurface target treatment zone. Targeted delivery of engineered nanoparticles (NPs) to treat petroleum hydrocarbons present in the unsaturated zone requires an understanding of their transport behaviour in these systems. A series of column experiments explored the effect of initial water saturation, flowrate, input dosage, and porous medium texture on the transport of iron oxide or cobalt ferrite NPs coated with an amphiphilic co-polymer, as well as their targeted attachment to a crude oil zone. As the initial water content increased with a concomitant reduction in air saturation, the degree of tailing present in the NP breakthrough curves (BTCs) reduced, and the mass of NPs recovered increased. Air saturation is positively correlated with the magnitude of air-water interfaces, which provide additional NP retention sites. At a lower injection flow rate, NP retention increased due to a longer residence time and comparatively high air saturation. NP transport behaviour was not sensitive to NP injection dose over the range tested. Increased retention and retardation of the NP BTC was observed in sediments with a higher clay and silt content. NPs coated with a lower concentration of a Pluronic block co-polymer to promote binding were preferentially retained within the crude oil zone. To simulate the asymmetrical NP breakthrough curves observed from the unsaturated systems required the use of a model that accounted for both mobile and immobile flow regions as well as NP attachment and detachment with nonlinear Langmuirian blocking. This model allowed examination of attachment and detachment rate coefficients which captured NP interaction with the porous medium and/or crude oil. It was found that the initial water saturation and flow rate did not have an appreciable impact on the NP attachment rate coefficient, while it increased by ~10× with increasing clay and silt content, and by ~100× in the presence of crude oil, indicating preferential NP attachment within the crude oil zone. As a result of the lower NP polymer concentration coating used to promote increased attachment to crude oil, higher retention was observed near the column inlet and was captured quantitatively by adding a depth-dependent straining term to the model. This retention behaviour represents a combination of irreversible attachment at the air-water interfaces and straining near the column inlet enhanced by the formation of NP aggregates. The detachment rate coefficient decreased with a lower initial water saturation and flowrate, but increased with higher clay and silt content. The findings from this study contribute to our understanding of the transport and binding behaviour of Pluronic-coated NPs in unsaturated conditions and, in particular, the role of initial water content, flowrate and porous medium texture. Demonstrated delivery of NPs to a target zone is an important step towards expanding the utility of NPs as treatment reagents.
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Affiliation(s)
- Najmeh Jaberi
- Department of Civil & Environmental Engineering, University of Waterloo, Waterloo, Ontario, Canada.
| | - Stuart Linley
- Department of Civil & Environmental Engineering, University of Waterloo, Waterloo, Ontario, Canada; Now at Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, England, United Kingdom
| | - Neil R Thomson
- Department of Civil & Environmental Engineering, University of Waterloo, Waterloo, Ontario, Canada
| | - Kevin McVey
- Chevron Environmental Management and Real Estate Company, Houston, TX, USA
| | | | - Frank X Gu
- Department of Chemical Engineering & Applied Science, University of Toronto, Toronto, Ontario, Canada
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Yan C, Cheng T, Li B, Shang J. Distinct interactions of pig and cow manure-derived colloids with TiO 2 nanoparticles and their impact on stability and transport. JOURNAL OF HAZARDOUS MATERIALS 2021; 416:125910. [PMID: 34492844 DOI: 10.1016/j.jhazmat.2021.125910] [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: 12/23/2020] [Revised: 03/25/2021] [Accepted: 04/14/2021] [Indexed: 06/13/2023]
Abstract
The application of livestock manure and aquaculture wastewater into agricultural soil introduces animal manure-derived colloids into the environment. These manure-derived colloids generally contain different organic matter components and may facilitate nanoparticle transport to the subsurface. This study investigated the interaction between manure-derived colloids (cow and pig manures) and titanium dioxide (TiO2) nanoparticles at neutral pH. The effect of this interaction on the stability, aggregation, and transport of TiO2 in a saturated porous media was studied. Our study found that cow manure-derived colloids have many humic-like substances, and pig manure-derived colloids contain many protein components and some humic-like substances. The interactions of different manure-derived colloids with TiO2 can affect the ζ-potential and aggregation status of TiO2 in the aqueous system. The results showed that cow manure-derived colloids slightly increased the TiO2 transport due to electrostatic repulsion, while pig manure-derived colloids substantially increased the TiO2 mobility in porous media because of both electrostatic repulsion and steric hindrance. Since both animal manure and TiO2 are ubiquitously present in the natural environment, manure-derived colloids can change the surface properties of TiO2 and facilitate TiO2 transport in the subsurface.
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Affiliation(s)
- Chaorui Yan
- College of Land Science and Technology, China Agricultural University, Key Laboratory of Plant-Soil Interactions, Ministry of Education, and Key Laboratory of Arable Land Conservation (North China), Ministry of Agriculture, Beijing 100193, PR China
| | - Tao Cheng
- Department of Earth Sciences, Memorial University St. John's, Newfoundland and Labrador A1B 3X5, Canada
| | - Baoguo Li
- College of Land Science and Technology, China Agricultural University, Key Laboratory of Plant-Soil Interactions, Ministry of Education, and Key Laboratory of Arable Land Conservation (North China), Ministry of Agriculture, Beijing 100193, PR China
| | - Jianying Shang
- College of Land Science and Technology, China Agricultural University, Key Laboratory of Plant-Soil Interactions, Ministry of Education, and Key Laboratory of Arable Land Conservation (North China), Ministry of Agriculture, Beijing 100193, PR China.
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Lv XW, Weng CC, Zhu YP, Yuan ZY. Nanoporous Metal Phosphonate Hybrid Materials as a Novel Platform for Emerging Applications: A Critical Review. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2005304. [PMID: 33605008 DOI: 10.1002/smll.202005304] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 10/15/2020] [Indexed: 06/12/2023]
Abstract
Nanoporous metal phosphonates are propelling the rapid development of emerging energy storage, catalysis, environmental intervention, and biology, the performances of which touch many fundamental aspects of portable electronics, convenient transportation, and sustainable energy conversion systems. Recent years have witnessed tremendous research breakthroughs in these fields in terms of the fascinating pore properties, the structural periodicity, and versatile skeletons of porous metal phosphonates. This review presents recent milestones of porous metal phosphonate research, from the diversified synthesis strategies for controllable pore structures, to several important applications including adsorption and separation, energy conversion and storage, heterogeneous catalysis, membrane engineering, and biomaterials. Highlights of porous structure design for metal phosphonates are described throughout the review and the current challenges and perspectives for future research in this field are discussed at the end. The aim is to provide some guidance for the rational preparation of porous metal phosphonate materials and promote further applications to meet the urgent demands in emerging applications.
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Affiliation(s)
- Xian-Wei Lv
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), National Institute for Advanced Materials, School of Materials Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Chen-Chen Weng
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), National Institute for Advanced Materials, School of Materials Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Yun-Pei Zhu
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), National Institute for Advanced Materials, School of Materials Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Zhong-Yong Yuan
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), National Institute for Advanced Materials, School of Materials Science and Engineering, Nankai University, Tianjin, 300350, China
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Linley S, Mellage A, Thomson NR, Van Cappellen P, Rezanezhad F. Spatiotemporal geo-electrical sensing of a Pluronic-coated cobalt ferrite nanoparticle slug in natural sand flow-through columns. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 769:144522. [PMID: 33486168 DOI: 10.1016/j.scitotenv.2020.144522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 11/26/2020] [Accepted: 12/11/2020] [Indexed: 06/12/2023]
Abstract
Rising industrial interest in the application of nanomaterials for the remediation of contaminated sites has led to concern over the environmental fate of the nanoremediation agents used. A critical requirement in evaluating and understanding nanoparticle (NP) behaviour in porous media is the development of analytical methods capable of in situ monitoring of complex NP transport dynamics. Spectral induced polarization (SIP), a non-invasive geo-electrical technique, offers a promising tool for detecting and quantifying NPs in soil and aquifer media. However, its application for monitoring the spatial migration and attachment behaviour of NPs remains uninvestigated. Here, we present results from flow-through experiments where we monitored the transport of cobalt ferrite nanoparticles (CoFe-NPs) coated with Pluronic, an amphiphilic polymer, in natural aquifer sand columns. We coupled concentration breakthrough curve analysis with SIP monitoring and reactive transport modeling to relate spatiotemporal NP concentration distributions to geo-electrical signals. Changes in the real (σ') conductivity at three different locations along the columns closely correlated with model-computed total (solid plus aqueous phase) NP concentrations during the propagation of a NP slug. The imaginary conductivity (σ″) correlated closely with the arrival of the NP-slug. However, during the receding front, bimodal σ″-signal peak behaviour was observed propagating through the columns, indicating the existence of complex in situ NP transport dynamics, potentially revealing the rupture of nanoclusters upon straining and their effect on bulk charge storage that may not be obvious from breakthrough curve data alone. Fitting of a double Cole-Cole relaxation model yielded distinct shifts in relaxation time (τ) associated with the polarization of smaller length-scale particles. Post-NP pulse τ and σ″ did not return to pre-injection values; these lingering signals were caused by retained NP concentrations as low as 8.8 mg kg-1. Our results support the applicability of SIP for spatial and temporal monitoring of NP distributions, with implications for the investigation of NP transport and nanoremediation strategies.
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Affiliation(s)
- Stuart Linley
- Department of Civil and Environmental Engineering, University of Waterloo, 200 University Ave. W., Waterloo, ON N2L 3G1, Canada.
| | - Adrian Mellage
- Centre for Applied Geoscience, University of Tübingen, Schnarrenbergstr. 99-96, 72076 Tübingen, Germany
| | - Neil R Thomson
- Department of Civil and Environmental Engineering, University of Waterloo, 200 University Ave. W., Waterloo, ON N2L 3G1, Canada
| | - Philippe Van Cappellen
- Ecohydrology Research Group, Water Institute and Department of Earth and Environmental Sciences, University of Waterloo, 200 University Ave. W., Waterloo, ON N2L 3G1, Canada
| | - Fereidoun Rezanezhad
- Ecohydrology Research Group, Water Institute and Department of Earth and Environmental Sciences, University of Waterloo, 200 University Ave. W., Waterloo, ON N2L 3G1, Canada
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Xia T, Lin Y, Li S, Yan N, Xie Y, He M, Guo X, Zhu L. Co-transport of negatively charged nanoparticles in saturated porous media: Impacts of hydrophobicity and surface O-functional groups. JOURNAL OF HAZARDOUS MATERIALS 2021; 409:124477. [PMID: 33172676 DOI: 10.1016/j.jhazmat.2020.124477] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 11/01/2020] [Accepted: 11/02/2020] [Indexed: 06/11/2023]
Abstract
Graphene oxide (GO) and polystyrene nanoplastic (PSNP) are typical carbonaceous nanomaterials which likely co-exist in soil and sediment. Here, we describe the transport of GO, irradiation reduced GO (RGO) and PSNP in saturated quartz sand both in single and binary systems. In the single transport system, the materials exhibited mobility in the order of GO > RGO > PSNP, due to increased hydrophobicity and decreased negative surface charges. Nevertheless, the co-transport of (R)GO and PSNP in the binary transport system was much more intricate. In Na+ saturated porous media, PSNP preferred to interact with (R)GO relative to the highly negatively charged quartz sand, thus (R)GO carried PSNP to break through the sand column. However, in Ca2+ saturated porous media, the transport of both (R)GO and PSNP was depressed, attributed to the particle-collector and particle-particle bridging effects between Ca2+ and the metal-complexing moieties of the nanoparticles and sand grains. Moreover, GO influenced the co-transport of PSNP to a larger extent than RGO, especially at relatively high ionic strength, because of the more abundant surface O-functional groups on GO providing more complexion sites with Ca2+. These results demonstrated that the transport of negatively charged nanomaterials was greatly related to the hydrophobicity and surface O-functional groups.
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Affiliation(s)
- Tianjiao Xia
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China; Key Laboratory of Plant Nutrition and the Agri-Environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi 712100, China
| | - Yixuan Lin
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China; Key Laboratory of Plant Nutrition and the Agri-Environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi 712100, China
| | - Shunli Li
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China; Key Laboratory of Plant Nutrition and the Agri-Environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi 712100, China
| | - Ni Yan
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China; Key Laboratory of Plant Nutrition and the Agri-Environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi 712100, China
| | - Yao Xie
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China; Key Laboratory of Plant Nutrition and the Agri-Environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi 712100, China
| | - Mengru He
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China; Key Laboratory of Plant Nutrition and the Agri-Environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi 712100, China
| | - Xuetao Guo
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China; Key Laboratory of Plant Nutrition and the Agri-Environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi 712100, China
| | - Lingyan Zhu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China; Key Laboratory of Plant Nutrition and the Agri-Environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi 712100, China.
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Ahamed A, Liang L, Lee MY, Bobacka J, Lisak G. Too small to matter? Physicochemical transformation and toxicity of engineered nTiO 2, nSiO 2, nZnO, carbon nanotubes, and nAg. JOURNAL OF HAZARDOUS MATERIALS 2021; 404:124107. [PMID: 33035908 DOI: 10.1016/j.jhazmat.2020.124107] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 09/04/2020] [Accepted: 09/18/2020] [Indexed: 06/11/2023]
Abstract
Engineered nanomaterials (ENMs) refer to a relatively novel class of materials that are increasingly prevalent in various consumer products and industrial applications - most notably for their superlative physicochemical properties when compared with conventional materials. However, consumer products inevitably degrade over the course of their lifetime, releasing ENMs into the environment. These ENMs undergo physicochemical transformations and subsequently accumulate in the environment, possibly leading to various toxic effects. As a result, a significant number of studies have focused on identifying the possible transformations and environmental risks of ENMs, with the objective of ensuring a safe and responsible application of ENMs in consumer products. This review aims to consolidate the results from previous studies related to each stage of the pathway of ENMs from being embodied in a product to disintegration/transformation in the environment. The scope of this work was defined to include the five most prevalent ENMs based on recent projected production market data, namely: nTiO2, nSiO2, nZnO, carbon nanotubes, and nAg. The review focuses on: (i) models developed to estimate environmental concentrations of ENMs; (ii) the possible physicochemical transformations; (iii) cytotoxicity and genotoxicity effects specific to each ENM selected; and (iv) a discussion to identify potential gaps in the studies conducted and recommend areas where further investigation is warranted.
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Affiliation(s)
- Ashiq Ahamed
- Residues and Resource Reclamation Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, CleanTech One, Singapore 637141 Singapore; Laboratory of Molecular Science and Engineering, Johan Gadolin Process Chemistry Centre, Åbo Akademi University, FI-20500 Turku/Åbo, Finland
| | - Lili Liang
- Residues and Resource Reclamation Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, CleanTech One, Singapore 637141 Singapore; School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 639798, Singapore; Interdisciplinary Graduate Program, Nanyang Technological University, 1 Cleantech Loop, CleanTech One, Singapore 637141 Singapore
| | - Ming Yang Lee
- Asian School of the Environment, Nanyang Technological University, Singapore 639798, Singapore
| | - Johan Bobacka
- Laboratory of Molecular Science and Engineering, Johan Gadolin Process Chemistry Centre, Åbo Akademi University, FI-20500 Turku/Åbo, Finland
| | - Grzegorz Lisak
- Residues and Resource Reclamation Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, CleanTech One, Singapore 637141 Singapore; School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 639798, Singapore.
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Liu T, Wu K, Wang M, Jing C, Chen Y, Yang S, Jin P. Performance and mechanisms of sulfadiazine removal using persulfate activated by Fe 3O 4@CuO x hollow spheres. CHEMOSPHERE 2021; 262:127845. [PMID: 32799147 DOI: 10.1016/j.chemosphere.2020.127845] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 07/24/2020] [Accepted: 07/25/2020] [Indexed: 06/11/2023]
Abstract
A Fe-Cu bimetal catalyst (FCHS) was synthesized by depositing Fe3O4 on the shell of CuOx hollow spheres, which were prepared via a soft template method. Several characterization methods, including XRD, SEM-EDS&mapping, TEM, FTIR, and XPS, were used to reveal the morphology and surface properties of FCHS. The characterization results demonstrated that the double-shell hollow structure is formed with a dense coating of Fe3O4 nanoparticles on the surface of CuOx hollow spheres. FCHS can exhibit excellent catalytic activity to degrade sulfadiazine (SDZ) with the oxidant of persulfate (PS). The optimal SDZ removal performance was explored by adjusting reaction parameters, including catalyst dosage, oxidant dosage, and solution pH. The SDZ removal efficiency in the FCHS + PS system could reach 95% at the optimal reaction condition ([catalyst]0 = 0.2 g/L, [PS]0 = 2 mM, pH = 7.0) with 5 mg/L of SDZ. Meanwhile, the degradation efficiency decreased with the coexistence of phosphate or carbonate anions. According to the results of radicals scavenging experiments and the electron paramagnetic resonance analysis, the radicals of SO4·-, O2·- and ·OH generated in the FCHS + PS system contribute to the degradation of SDZ. Moreover, the results of XPS revealed that the solid-state charge-transfer redox couple of Fe(III)/Fe(II) and Cu(I)/Cu(II) can promote the activation of PS. It means that the cooperation effect between Cu oxides and Fe oxides in the double-shell structure is beneficial to the catalytic degradation of SDZ. Furthermore, four possible pathways for SDZ degradation were proposed according to the analysis of intermediate products detected by the LCMS-IT-TOF.
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Affiliation(s)
- Ting Liu
- College of Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Kun Wu
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No.13, Yanta Road, Beiling District, Xi'an, 710055, Shaanxi Province, China; Key Laboratory of Water Resource, Environment and Ecology, MOE, Xi'an, 710055, China.
| | - Meng Wang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No.13, Yanta Road, Beiling District, Xi'an, 710055, Shaanxi Province, China
| | - Chunyang Jing
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No.13, Yanta Road, Beiling District, Xi'an, 710055, Shaanxi Province, China
| | - Yuanyuan Chen
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No.13, Yanta Road, Beiling District, Xi'an, 710055, Shaanxi Province, China
| | - Shengjiong Yang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No.13, Yanta Road, Beiling District, Xi'an, 710055, Shaanxi Province, China
| | - Pengkang Jin
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No.13, Yanta Road, Beiling District, Xi'an, 710055, Shaanxi Province, China
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Kim YM, Lee YS, Kim JY. Assessment on landfill liners as the barrier against C 60 nanoparticles. JOURNAL OF HAZARDOUS MATERIALS 2020; 400:123133. [PMID: 32593017 DOI: 10.1016/j.jhazmat.2020.123133] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 05/29/2020] [Accepted: 06/04/2020] [Indexed: 06/11/2023]
Abstract
Owing to the increasing usage of nanomaterials, it is imperative to assess their potential impacts on natural systems, and in particular, investigate if existing barriers can prevent nanomaterial emission in landfills because they will be disposed in landfills at the end of their useful lives. This study inspected the behavior of colloidal fullerene (nC60) in and around landfill liner materials. Sorption isotherm experiments using either natural soil or high density polyethylene geomembrane as sorbents showed that nC60 was readily removed by sorption to soil and precipitation, while there was no sorption to geomembrane. To investigate transport through soil, nC60 was injected into columns of compacted soil layers with a thickness of 3.3-4.2 cm and hydraulic conductivity <1 × 10-7 cm/s. The nanoparticles rarely passed through the layers owing to self-aggregation and/or screening by the soil layer. When they were detected in the effluent, breakthrough curves of an extraordinary shape were produced, which is presumably attributed to surface modification of collectors by deposited nC60. However, simulation using the obtained mass transport parameters showed that it is unlikely that nC60 from disposed C60-containing products would overcome compacted clay liners; therefore, its migration to the ambient environment would be negligible.
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Affiliation(s)
- Yeong Min Kim
- Department of Civil and Environmental Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, Republic of Korea
| | - Young Su Lee
- Department of Civil and Environmental Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, Republic of Korea
| | - Jae Young Kim
- Department of Civil and Environmental Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, Republic of Korea.
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Dong S, Cai W, Sheng L, Wang W, Liu H, Xia J. Combined effect of physicochemical factors on the retention and transport of g-C 3N 4 in porous media. CHEMOSPHERE 2020; 256:127100. [PMID: 32460159 DOI: 10.1016/j.chemosphere.2020.127100] [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: 03/18/2020] [Revised: 04/27/2020] [Accepted: 05/15/2020] [Indexed: 06/11/2023]
Abstract
The environmental behaviors of graphitic carbon nitride (g-C3N4) have drawn increasing attention in recent. Understanding the fate and transport of g-C3N4 in porous media is necessary for evaluating its environmental risks. Column experiments were used in this study to investigate the combined effect of ionic strength (IS) and other common physicochemical factors (i.e. sand grain size, solution pH, and humic acid concentration) on g-C3N4 transport. The one-site kinetic models were applied to simulate the retention and transport of g-C3N4 in porous media, which fitted the breakthrough curves very well. Experimental and model results showed that g-C3N4 had a weak mobility with the transport mass recovery (TMR) less than 39.6% at pH 6.0 in absence of humic acid (HA). The mobility of g-C3N4 was inhibited with decreasing sand grain size, and the inhibited efficiency was enhanced with IS. However, g-C3N4 transport was significantly enhanced with increasing pH and HA concentration, and the enhanced efficiency was more obviously at high IS. The maximum TMR (78.3%) of g-C3N4 was observed with the presence of 5 mg L-1 HA. These results indicated that physicochemical factors played an important and combined role in controlling g-C3N4 transport in porous media, which would lead to the more complex evaluation on the environmental behaviors of g-C3N4.
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Affiliation(s)
- Shunan Dong
- College of Agricultural Science and Engineering, Hohai University, Nanjing, 210098, China.
| | - Wangwei Cai
- College of Agricultural Science and Engineering, Hohai University, Nanjing, 210098, China
| | - Liting Sheng
- College of Agricultural Science and Engineering, Hohai University, Nanjing, 210098, China
| | - Weimu Wang
- College of Agricultural Science and Engineering, Hohai University, Nanjing, 210098, China
| | - Hui Liu
- College of Agricultural Science and Engineering, Hohai University, Nanjing, 210098, China
| | - Jihong Xia
- College of Agricultural Science and Engineering, Hohai University, Nanjing, 210098, China.
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Qi Y, Ye J, Ren S, Lv J, Zhang S, Che Y, Ning G. In-situ synthesis of metal nanoparticles@metal-organic frameworks: Highly effective catalytic performance and synergistic antimicrobial activity. JOURNAL OF HAZARDOUS MATERIALS 2020; 387:121687. [PMID: 31784130 DOI: 10.1016/j.jhazmat.2019.121687] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 11/05/2019] [Accepted: 11/12/2019] [Indexed: 06/10/2023]
Abstract
M-NP@Zn-BIF (M-NP = Ag or Cu nanoparticle; Zn-BIF is a zinc-based boron imidazolate framework, Zn2(BH(2-mim)3)2(obb); 2-mim = 2-methylimidazole; obb = 4,4'-oxybis(benzoate)) composites were successfully in-situ synthesized by utilizing the reducing ability of the BH bond contained in the Zn-BIF at room temperature without any additional chemical reduction reagents. These composites (225 μg/mL) exhibited excellent catalytic activity to convert 4-nitrophenol to 4-aminophenol in 2.5 min and 6 min with a conversion rate of 99.9 %, respectively. In addition, Ag@Zn-BIF (50 μg/mL) showed highly synergistic antibacterial activity against both Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) with a bactericidal rate of approximately 99.9 %. An antibacterial mechanism was proposed for the generation of intracellular reactive oxygen species (ROS) levels. Superoxide radicals (O2-) and hydroxyl radicals (OH) formed during the antibacterial process were shown to accelerate the death of bacteria. They also exhibited highly photocatalytic activity for Rhodamine B (RhB). When the concentration of the composites is 1000 μg/mL, the photocatalytic efficiency of Ag@Zn-BIF and Cu@Zn-BIF increased by 31.62 and 18.13 times compared with Zn-BIF, respectively. All in all, this study developed a simple and versatile integrated platform for the removal of nitrophenols, organic dyes, and the effective inactivation of bacteria in water.
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Affiliation(s)
- Ye Qi
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian, Liaoning, 116024, PR China
| | - Junwei Ye
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian, Liaoning, 116024, PR China; Engineering Laboratory of Boric and Magnesic Functional Material Preparative and Applied Technology, 2 Linggong Road, Dalian, Liaoning, 116024, PR China.
| | - Shuangsong Ren
- Department of Ultrasound, the First Affiliated Hospital of Dalian Medical University, 193 Lianhe Road, Dalian, Liaoning, 116011, PR China
| | - Jialin Lv
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian, Liaoning, 116024, PR China
| | - Siqi Zhang
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian, Liaoning, 116024, PR China
| | - Ying Che
- Department of Ultrasound, the First Affiliated Hospital of Dalian Medical University, 193 Lianhe Road, Dalian, Liaoning, 116011, PR China.
| | - Guiling Ning
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian, Liaoning, 116024, PR China; Engineering Laboratory of Boric and Magnesic Functional Material Preparative and Applied Technology, 2 Linggong Road, Dalian, Liaoning, 116024, PR China.
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Yao N, Li C, Yu J, Xu Q, Wei S, Tian Z, Yang Z, Yang W, Shen J. Insight into adsorption of combined antibiotic-heavy metal contaminants on graphene oxide in water. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116278] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Amino-functionalized graphene oxide for Cr(VI), Cu(II), Pb(II) and Cd(II) removal from industrial wastewater. OPEN CHEM 2020. [DOI: 10.1515/chem-2020-0009] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractAmino-functionalized graphene oxide (GO-NH2) was synthesized by grafting (3-aminopropyl) triethoxysilane on the graphene oxide (GO) surface. The GO-NH2 with high surface area and numerous active sites can efficiently adsorb Cr(VI), Cu(II), Pb(II) and Cd(II) ions. The maximum adsorption capacities of GO-NH2 for Cr(VI), Cu(II), Pb(II) and Cd(II) were 280.11, 26.25, 71.89 and 10.04 mg g−1, respectively. The pseudo-first-order and pseudo-second-order kinetic models were employed to describe the kinetic processes. The experimental data agreed well with the pseudo-second-order kinetic equation, and the adsorption of heavy metals onto GO-NH2 occurs via chemical adsorption. The characteristics of Cr(VI), Cu(II), Pb(II) and Cd(II) in the GO-NH2 adsorption processes were analyzed using the Langmuir and Freundlich isotherm models. The adsorption processes of Pb(II) and Cd(II) on GO-NH2 were fit by the Langmuir model. The Freundlich isotherm model was well correlated to Cr(VI) and Cu(II). The GO-NH2 is a promising material for the removal of heavy metal ions from industrial wastewater. This study provides an effective pathway to process industrial wastewater, and the GO-NH2 has a good adsorption effect for the treatment of heavy metals in industrial wastewater.
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Rastghalam ZS, Yan C, Shang J, Cheng T. The role of Fe oxyhydroxide coating, illite clay, and peat moss in nanoscale titanium dioxide (nTiO 2) retention and transport in geochemically heterogeneous media. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 257:113625. [PMID: 31806460 DOI: 10.1016/j.envpol.2019.113625] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 09/26/2019] [Accepted: 11/12/2019] [Indexed: 06/10/2023]
Abstract
Natural media such as soil and sediment contain mineralogical and organic components with distinct chemical, surface, and electrostatic properties. To better understand the role of various soil and sediment components on particle transport, columns were packed with quartz sand and natural sediment with added Fe oxyhydroxide coating, illite clay, and peat moss to investigate how these added components influence nTiO2 retention and transport in geochemically heterogeneous medium. Results showed that nTiO2 transport was low at pH 5, attributable to the electrostatic attraction between positively-charged nTiO2 and negatively-charged medium. While illite did not notably affect nTiO2 transport at pH 5, Fe oxyhydroxide coating increased nTiO2 transport due to electrostatic repulsion between Fe oxyhydroxide and nTiO2. Peat moss also increased nTiO2 transport at pH 5, attributable to the increased DOC concentration, which resulted in higher DOC adsorption to nTiO2 and intensified electrostatic repulsion between nTiO2 and the medium. At pH 9, nTiO2 transport was high due to the electrostatic repulsion between negatively-charged nTiO2 and medium surfaces. Fe oxyhydroxide coating at pH 9 slightly delayed nTiO2 transport due to electrostatic attraction, while illite clay and peat moss substantially inhibited nTiO2 transport via straining/entrapment or electrostatic attraction. Overall, this study demonstrated that pH has a considerable effect on how minerals and organic components of a medium influence nTiO2 transport. At low pH, electrostatic attraction was the dominant mechanism, therefore, nTiO2 mobility was low regardless of the differences in mineralogical and organic components. Conversely, nTiO2 mobility was high at high pH and nTiO2 retention was dominated by straining/entrapment and sensitive to the mineralogical and organic composition of the medium.
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Affiliation(s)
- Zahra Sadat Rastghalam
- Department of Earth Sciences, Memorial University, St. John's, Newfoundland and Labrador, A1B 3X5, Canada
| | - Chaorui Yan
- Department of Soil and Water Sciences, China Agricultural University, Beijing, 100193, China
| | - Jianying Shang
- Department of Soil and Water Sciences, China Agricultural University, Beijing, 100193, China
| | - Tao Cheng
- Department of Earth Sciences, Memorial University, St. John's, Newfoundland and Labrador, A1B 3X5, Canada.
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Cai N, Larese-Casanova P. Facile Synthesis and Reuse of Magnetic Black Carbon Magnetite (BC-Mag) for Fast Carbamazepine Removal from Water. NANOMATERIALS 2020; 10:nano10020213. [PMID: 31991921 PMCID: PMC7074862 DOI: 10.3390/nano10020213] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 01/20/2020] [Accepted: 01/23/2020] [Indexed: 11/24/2022]
Abstract
Magnetic carbonaceous nanomaterials are needed in water treatment applications because they can offer both carbon surfaces for sorption of organic pollutants and ease of material magnetic retrieval for regeneration and reuse. In this study, we employed a facile one-step method to synthesize a black carbon-magnetite composite (BC-Mag) by high-temperature annealing of black carbon and hematite. The nanocomposite was easily dispersed and stable in water owing to the presence of negatively charged oxygen surface functional groups. Sorption kinetics with dissolved carbamazepine showed a rapid initial uptake with equilibrium achieved within only minutes. The sorption extent can be described with the Freundlich model, and surface area normalized sorption affinity was an order of magnitude greater than conventional granular activated carbon. The sorption extent of neutral carbamazepine remained constant between pH 2–10 while surface zeta potential decreased. BC-Mag can be reused for the sorption of carbamazepine up to six times without significant loss of the sorption extent.
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Affiliation(s)
- Nan Cai
- Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, Guangdong Engineering and Technology Research Center of Online Monitoring for Water Environmental Pollution, Guangdong Institute of Analysis, Guangzhou 510070, China;
| | - Philip Larese-Casanova
- Department of Civil & Environmental Engineering, Northeastern University, 360 Huntington Avenue, Boston, MA 02115, USA
- Correspondence: or ; Tel.: +1-617-373-2899
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Barrak H, Ahmedi R, Chevallier P, M'nif A, Laroche G, Hamzaoui AH. Highly efficient extraction of rare earth elements and others ions from green phosphoric acid medium using TMSEDTA@GO@Fe3O4 core-shell. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.04.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Heo J, Yoon Y, Lee G, Kim Y, Han J, Park CM. Enhanced adsorption of bisphenol A and sulfamethoxazole by a novel magnetic CuZnFe 2O 4-biochar composite. BIORESOURCE TECHNOLOGY 2019; 281:179-187. [PMID: 30822638 DOI: 10.1016/j.biortech.2019.02.091] [Citation(s) in RCA: 127] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2018] [Revised: 02/16/2019] [Accepted: 02/20/2019] [Indexed: 06/09/2023]
Abstract
The widespread occurrence of endocrine-disrupting compound and pharmaceutical active compounds such as bisphenol A (BPA) and sulfamethoxazole (SMX) in natural freshwater resources can cause serious environmental problems even at low exposure levels. In this work, in order to remove BPA and SMX from aqueous solutions, a novel biochar-supported magnetic CuZnFe2O4 composite (CZF-biochar) was synthesized by a facile one-pot hydrothermal process. After characterization studies, the key factors affecting BPA and SMX adsorption on CZF-biochar were comprehensively investigated. The primary mechanisms for BPA and SMX adsorption included charge-assisted H-bonding, hydrophobic, and π-π electron donor-acceptor interactions. In summary, considering the fast kinetics, high adsorption properties, easy magnetic separation, and recyclability for multiple reuses, the CZF-biochar composite has potential for the removal of BPA, SMX, and potentially other emerging organic contaminants from contaminated soil and water.
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Affiliation(s)
- Jiyong Heo
- Department of Civil and Environmental Engineering, Korea Army Academy at Yeongcheon, 495 Hogook-ro, Gokyungmeon, Yeongcheon, Gyeongbuk 38900, Republic of Korea
| | - Yeomin Yoon
- Department of Civil and Environmental Engineering, University of South Carolina, Columbia, 300 Main Street, SC 29208, USA
| | - Gooyong Lee
- Green Technology Center, Namsan Square Bldg., 173, Toegye-ro, Jung-gu, Seoul 04554, Republic of Korea
| | - Yejin Kim
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea
| | - Jonghun Han
- Department of Civil and Environmental Engineering, Korea Army Academy at Yeongcheon, 495 Hogook-ro, Gokyungmeon, Yeongcheon, Gyeongbuk 38900, Republic of Korea
| | - Chang Min Park
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea.
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Fazeli Sangani M, Owens G, Nazari B, Astaraei A, Fotovat A, Emami H. Different modelling approaches for predicting titanium dioxide nanoparticles mobility in intact soil media. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 665:1168-1181. [PMID: 30893748 DOI: 10.1016/j.scitotenv.2019.01.345] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 01/25/2019] [Accepted: 01/26/2019] [Indexed: 06/09/2023]
Abstract
Understanding the transport behaviour of new and emerging materials such as engineered nanoparticles (ENPs) is vital for the accurate assessment of their functionality and fate in environmental systems. Predicting ENP mobility in soil systems based on common attributes of either soil or ENPs is of significant interest as an alternative to conducting laborious and time consuming column experiments. Thus this study investigates the importance of different soil properties and experimental conditions on titanium dioxide nanoparticles (nTiO2) mobility in real soil media and also evaluates four different modelling approaches including Multiple Linear Regression (MLR), Classification and Regression Tree (CART), Random Forest (RF) and Artificial Neural Network (ANN) for predicting nTiO2 mobility in soil media. The performance of both ANN and RF models were good for predicting nTiO2 transport in soil media, with ANN predictions being slightly superior to RF with less generalization errors. However, RF had the advantage of requiring less input predictors. In comparison the MLR model exhibited poor performance in both calibration and validation datasets, and while the validity of CART was almost acceptable in the calibration dataset, its efficiency was poor for the validation dataset. In addition to soil solution chemistry and hydraulic properties, other important factors having a major contribution to nTiO2 transport through soil included soil fracture associated properties and the existence of preferential flows.
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Affiliation(s)
- Mahmood Fazeli Sangani
- Department of Soil Science, Faculty of Agricultural Sciences, University of Guilan, Rasht, Iran.
| | - Gary Owens
- Environmental Contaminants Group, Future Industries Institute, Mawson Lakes Campus, University of South Australia (UniSA), South Australia, Adelaide, Australia.
| | - Bijan Nazari
- Department of Water Sciences and Engineering, Imam Khomeini International University, Qazvin, Iran.
| | - Alireza Astaraei
- Department of Soil Sciences, Faculty of Agriculture, Ferdowsi University of Mashhad (FUM), Mashhad, Iran.
| | - Amir Fotovat
- Department of Soil Sciences, Faculty of Agriculture, Ferdowsi University of Mashhad (FUM), Mashhad, Iran.
| | - Hojat Emami
- Department of Soil Sciences, Faculty of Agriculture, Ferdowsi University of Mashhad (FUM), Mashhad, Iran.
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Zhai Y, Ma T, Zhou J, Li X, Liu D, Wang Z, Qin Y, Du Q. Impacts of leachate of landfill on the groundwater hydrochemistry and size distributions and heavy metal components of colloids: a case study in NE China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:5713-5723. [PMID: 30612360 DOI: 10.1007/s11356-018-4053-0] [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: 08/19/2018] [Accepted: 12/14/2018] [Indexed: 06/09/2023]
Abstract
Colloids associated with heavy metals are ubiquitous in contaminated groundwater; waste accumulation at imperfectly sealed landfills can produce large amounts of leachate with colloids and heavy metal contaminants, which can pollute the downstream groundwater. In this study, three sites in a landfill were sampled to reveal heavy metal particle size distributions and their chemical compositions. The > 220 nm particle sizes were the predominant size in the downstream groundwater, while the < 10 nm particle sizes were the predominant size in the upstream groundwater. Total Fe increased from 35.5 μg/L in the upstream groundwater to 107 μg/L in the downstream groundwater. This increase was attributed to the enhanced migration and accumulation of colloids in the aqueous phase. The elements and the colloid size distribution in the landfill indirectly reflected the composition and degradation of the waste. Colloids played a key role in distribution of both solid particles and aqueous contaminants in the landfill. The results of this study will contribute to the knowledge of the effect of different contaminants in the vicinity of landfills without appropriate sealing systems.
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Affiliation(s)
- Yuanzheng Zhai
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, China
- College of Water Sciences, Beijing Normal University, Beijing, 100875, People's Republic of China
| | - Tianyi Ma
- 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.
| | - Jingjing Zhou
- 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
| | - Xiaofei Li
- 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
| | - Zhuo Wang
- 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
| | - 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
| | - Qingqing Du
- College of Water Sciences, Beijing Normal University, Beijing, 100875, People's Republic of China
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Park CM, Wang D, Han J, Heo J, Su C. Evaluation of the colloidal stability and adsorption performance of reduced graphene oxide-elemental silver/magnetite nanohybrids for selected toxic heavy metals in aqueous solutions. APPLIED SURFACE SCIENCE 2019; 471:8-17. [PMID: 32801406 PMCID: PMC7424532 DOI: 10.1016/j.apsusc.2018.11.240] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Reduced graphene oxide (rGO) hybridized with magnetite and/or elemental silver (rGO/magnetite, rGO/silver, and rGO/magnetite/silver) nanoparticles were evaluated as potential adsorbents for toxic heavy metal ions (Cd (II), Ni(II), Zn(II), Co(II), Pb(II), and Cu(II)). Although the deposition of iron oxide and silver nanoparticles on the rGO nanosheets played an inhibitory role in metal ion adsorption, the metal adsorption efficiency by the nanohybrids (NHs) was still higher than that reported for many other sorbents (e.g., activated biochar, commercial resins, and nanosized hydrated Zr(IV) oxide particles). X-ray photoelectron spectroscopy analyses revealed that complexation with deprotonated adsorbents and cation exchange was an important mechanism for Cd(II) ion removal by the rGO and NHs. Competitive adsorption tests using multi metals showed that the adsorption affinity of metal ions on the rGO and its NHs follows the order (Cu(II), Zn(II)) > Ni(II) > Co(II) > (Pb(II), Cd(II)), which is similar to the order observed for single-metal adsorption experiments. These results can be explained by the destabilization abilities of the rGO and NHs, as well as the ionic radii of the considered metal ions. Our findings demonstrate the feasibility of using rGO-based NHs as highly efficient adsorbents for heavy metal removal from water.
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Affiliation(s)
- Chang Min Park
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea
- National Research Council Resident Research Associate at the U.S. Environmental Protection Agency, 919 Kerr Research Drive, Ada, OK 74820, USA
- Corresponding author at: Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea
| | - Dengjun Wang
- National Research Council Resident Research Associate at the U.S. Environmental Protection Agency, 919 Kerr Research Drive, Ada, OK 74820, USA
| | - Jonghun Han
- Department of Civil and Environmental Engineering, Korea Army Academy at Youngcheon, 495 Hogook-ro, Gokyungmeon, Youngcheon, Gyeongbuk 38900, Republic of Korea
| | - Jiyong Heo
- Department of Civil and Environmental Engineering, Korea Army Academy at Youngcheon, 495 Hogook-ro, Gokyungmeon, Youngcheon, Gyeongbuk 38900, Republic of Korea
| | - Chunming Su
- Groundwater, Watershed, and Ecosystem Restoration Division, National Risk Management Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, 919 Kerr Research Drive, Ada, OK 74820, USA
- Corresponding author. (C.M. Park), (C. Su)
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Simagina AA, Polynski MV, Vinogradov AV, Pidko EA. Towards rational design of metal-organic framework-based drug delivery systems. RUSSIAN CHEMICAL REVIEWS 2018. [DOI: 10.1070/rcr4797] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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29
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Nano-particle dynamics during capillary suction. J Colloid Interface Sci 2018; 521:69-80. [DOI: 10.1016/j.jcis.2018.03.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Revised: 03/06/2018] [Accepted: 03/07/2018] [Indexed: 01/09/2023]
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30
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Wang D, Jin Y, Park CM, Heo J, Bai X, Aich N, Su C. Modeling the Transport of the "New-Horizon" Reduced Graphene Oxide-Metal Oxide Nanohybrids in Water-Saturated Porous Media. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:4610-4622. [PMID: 29582656 PMCID: PMC6818097 DOI: 10.1021/acs.est.7b06488] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Little is known about the fate and transport of the "new-horizon" multifunctional nanohybrids in the environment. Saturated sand-packed column experiments ( n = 66) were therefore performed to investigate the transport and retention of reduced graphene oxide (RGO)-metal oxide (Fe3O4, TiO2, and ZnO) nanohybrids under environmentally relevant conditions (mono- and divalent electrolytes and natural organic matter). Classical colloid science principles (Derjaguin-Landau-Verwey-Overbeek (DLVO) theory and colloid filtration theory (CFT)) and mathematical models based on the one-dimensional convection-dispersion equation were employed to describe and predict the mobility of RGO-Fe3O4, RGO-TiO2, and RGO-ZnO nanohybrids in porous media. Results indicate that the mobility of the three nanohybrids under varying experimental conditions is overall explainable by DLVO theory and CFT. Numerical simulations suggest that the one-site kinetic retention model (OSKRM) considering both time- and depth-dependent retention accurately approximated the breakthrough curves (BTCs) and retention profiles (RPs) of the nanohybrids concurrently; whereas, others (e.g., two-site retention model) failed to capture the BTCs and/or RPs. This is primarily because blocking BTCs and exponential/hyperexponential/uniform RPs occurred, which is within the framework of OSKRM featuring time- (for kinetic Langmuirian blocking) and depth-dependent (for exponential/hyperexponential/uniform) retention kinetics. Employing fitted parameters (maximum solid-phase retention capacity: Smax = 0.0406-3.06 cm3/g; and first-order attachment rate coefficient: ka = 0.133-20.6 min-1) extracted from the OSKRM and environmentally representative physical variables (flow velocity (0.00441-4.41 cm/min), porosity (0.24-0.54), and grain size (210-810 μm)) as initial input conditions, the long-distance transport scenarios (in 500 cm long sand columns) of the three nanohybrids were predicted via forward simulation. Our findings address the existing knowledge gap regarding the impact of physicochemical factors on the transport of the next-generation, multifunctional RGO-metal oxide nanohybrids in the subsurface.
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Affiliation(s)
- Dengjun Wang
- National Research Council, National Risk Management Research Laboratory, Office of Research and Development, United States Environmental Protection Agency, Ada, Oklahoma 74820, United States
| | - Yan Jin
- Department of Plant and Soil Sciences, University of Delaware, Newark, Delaware 19716, United States
| | - Chang Min Park
- Department of Environmental Engineering, Kyungpook National University, Buk-gu, Daegu 41566, South Korea
| | - Jiyong Heo
- Department of Civil and Environmental Engineering, Korea Army Academy, Young-Cheon, Gyeongbuk 38900, South Korea
| | - Xue Bai
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, Jiangsu Province, China
| | - Nirupam Aich
- Department of Civil, Structural, and Environmental Engineering, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
| | - Chunming Su
- Groundwater, Watershed, and Ecosystem Restoration Division, National Risk Management Research Laboratory, Office of Research and Development, United States Environmental Protection Agency, Ada, Oklahoma 74820, United States
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31
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Park MVDZ, Bleeker EAJ, Brand W, Cassee FR, van Elk M, Gosens I, de Jong WH, Meesters JAJ, Peijnenburg WJGM, Quik JTK, Vandebriel RJ, Sips AJAM. Considerations for Safe Innovation: The Case of Graphene. ACS NANO 2017; 11:9574-9593. [PMID: 28933820 DOI: 10.1021/acsnano.7b04120] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
The terms "Safe innovation" and "Safe(r)-by-design" are currently popular in the field of nanotechnology. These terms are used to describe approaches that advocate the consideration of safety aspects already at an early stage of the innovation process of (nano)materials and nanoenabled products. Here, we investigate the possibilities of considering safety aspects during various stages of the innovation process of graphene, outlining what information is already available for assessing potential hazard, exposure, and risks. In addition, we recommend further steps to be taken by various stakeholders to promote the safe production and safe use of graphene.
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Affiliation(s)
- Margriet V D Z Park
- Rijksinstituut voor Volksgezondheid en Milieu , 3720 BA Bilthoven, The Netherlands
| | - Eric A J Bleeker
- Rijksinstituut voor Volksgezondheid en Milieu , 3720 BA Bilthoven, The Netherlands
| | - Walter Brand
- Rijksinstituut voor Volksgezondheid en Milieu , 3720 BA Bilthoven, The Netherlands
| | - Flemming R Cassee
- Rijksinstituut voor Volksgezondheid en Milieu , 3720 BA Bilthoven, The Netherlands
| | - Merel van Elk
- Rijksinstituut voor Volksgezondheid en Milieu , 3720 BA Bilthoven, The Netherlands
| | - Ilse Gosens
- Rijksinstituut voor Volksgezondheid en Milieu , 3720 BA Bilthoven, The Netherlands
| | - Wim H de Jong
- Rijksinstituut voor Volksgezondheid en Milieu , 3720 BA Bilthoven, The Netherlands
| | | | | | - Joris T K Quik
- Rijksinstituut voor Volksgezondheid en Milieu , 3720 BA Bilthoven, The Netherlands
| | - Rob J Vandebriel
- Rijksinstituut voor Volksgezondheid en Milieu , 3720 BA Bilthoven, The Netherlands
| | - Adriënne J A M Sips
- Rijksinstituut voor Volksgezondheid en Milieu , 3720 BA Bilthoven, The Netherlands
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32
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Casti P, Mencattini A, Sammarco I, Velappa SJ, Magna G, Cricenti A, Luce M, Pietroiusti A, Lesci GI, Ferrucci L, Magrini A, Martinelli E, Di Natale C. Robust classification of biological samples in atomic force microscopy images via multiple filtering cooperation. Knowl Based Syst 2017. [DOI: 10.1016/j.knosys.2017.07.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Wang M, Gao B, Tang D, Sun H, Yin X, Yu C. Effects of temperature on graphene oxide deposition and transport in saturated porous media. JOURNAL OF HAZARDOUS MATERIALS 2017; 331:28-35. [PMID: 28242526 DOI: 10.1016/j.jhazmat.2017.02.014] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2016] [Revised: 02/09/2017] [Accepted: 02/10/2017] [Indexed: 06/06/2023]
Abstract
Laboratory batch sorption and sand column experiments were conducted to examine the effects of temperature (6 and 24°C) on the retention and transport of GO in water-saturated porous media with different combination of solution ionic strength (IS, 1 and 10mM), sand type (natural and acid-cleaned), and grain size (coarse and fine). Although results from batch sorption experiment showed that temperature affected the sorption of GO onto the sand grains at the low IS, the interactions between GO and the sand were relatively weak, which did make the temperature effect prominent. When the IS was 1mM, experimental temperature showed little effect on GO retention and transport regardless of the medium properties. GO was highly mobile in the sand columns with mass recovery rates ranged from 77.3% to 92.4%. When the IS increased to 10mM, temperature showed notable effects on GO retention and transport in saturated porous media. For all the combinations of sand type and grain size, the higher the temperature was, the less mobile GO particles were. The effects of temperature on GO retention and transport in saturated porous media were further verified though simulations from an advection-dispersion-reaction model.
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Affiliation(s)
- Mei Wang
- College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing, 210098, China; Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL, 32611, USA
| | - Bin Gao
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL, 32611, USA.
| | - Deshan Tang
- College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing, 210098, China
| | - Huimin Sun
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL, 32611, USA; College of Resources and Environment, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Xianqiang Yin
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL, 32611, USA; College of Resources and Environment, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Congrong Yu
- College of Hydrology and Water Conservancy and Water Resources, Hohai University, Nanjing, 210098, China
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Vimbela GV, Ngo SM, Fraze C, Yang L, Stout DA. Antibacterial properties and toxicity from metallic nanomaterials. Int J Nanomedicine 2017; 12:3941-3965. [PMID: 28579779 PMCID: PMC5449158 DOI: 10.2147/ijn.s134526] [Citation(s) in RCA: 287] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
The era of antibiotic resistance is a cause of increasing concern as bacteria continue to develop adaptive countermeasures against current antibiotics at an alarming rate. In recent years, studies have reported nanoparticles as a promising alternative to antibacterial reagents because of their exhibited antibacterial activity in several biomedical applications, including drug and gene delivery, tissue engineering, and imaging. Moreover, nanomaterial research has led to reports of a possible relationship between the morphological characteristics of a nanomaterial and the magnitude of its delivered toxicity. However, conventional synthesis of nanoparticles requires harsh chemicals and costly energy consumption. Additionally, the exact relationship between toxicity and morphology of nanomaterials has not been well established. Here, we review the recent advancements in synthesis techniques for silver, gold, copper, titanium, zinc oxide, and magnesium oxide nanomaterials and composites, with a focus on the toxicity exhibited by nanomaterials of multidimensions. This article highlights the benefits of selecting each material or metal-based composite for certain applications while also addressing possible setbacks and the toxic effects of the nanomaterials on the environment.
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Affiliation(s)
| | - Sang M Ngo
- Department of Electrical Engineering, California State University, Long Beach, CA
| | | | - Lei Yang
- Department of Orthopaedics, Orthopaedic Institute, The First Affiliated Hospital.,International Research Center for Translational Orthopaedics (IRCTO), Soochow University, Suzhou, Jiangsu, People's Republic of China
| | - David A Stout
- International Research Center for Translational Orthopaedics (IRCTO), Soochow University, Suzhou, Jiangsu, People's Republic of China.,Department of Mechanical and Aerospace Engineering.,Department of Biomedical Engineering, California State University, Long Beach, CA, USA
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35
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Garner KL, Suh S, Keller AA. Assessing the Risk of Engineered Nanomaterials in the Environment: Development and Application of the nanoFate Model. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:5541-5551. [PMID: 28443660 DOI: 10.1021/acs.est.6b05279] [Citation(s) in RCA: 117] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
We developed a dynamic multimedia fate and transport model (nanoFate) to predict the time-dependent accumulation of metallic engineered nanomaterials (ENMs) across environmental media. nanoFate considers a wider range of processes and environmental subcompartments than most previous models and considers ENM releases to compartments (e.g., urban, agriculture) in a manner that reflects their different patterns of use and disposal. As an example, we simulated ten years of release of nano CeO2, CuO, TiO2, and ZnO in the San Francisco Bay area. Results show that even soluble metal oxide ENMs may accumulate as nanoparticles in the environment in sufficient concentrations to exceed the minimum toxic threshold in freshwater and some soils, though this is more likely with high-production ENMs such as TiO2 and ZnO. Fluctuations in weather and release scenario may lead to circumstances where predicted ENM concentrations approach acute toxic concentrations. The fate of these ENMs is to mostly remain either aggregated or dissolved in agricultural lands receiving biosolids and in freshwater or marine sediments. Comparison to previous studies indicates the importance of some key model aspects including climatic and temporal variations, how ENMs may be released into the environment, and the effect of compartment composition on predicted concentrations.
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Affiliation(s)
- Kendra L Garner
- Bren School of Environmental Science & Management, University of California , SantaBarbara, California 93106, United States
| | - Sangwon Suh
- Bren School of Environmental Science & Management, University of California , SantaBarbara, California 93106, United States
| | - Arturo A Keller
- Bren School of Environmental Science & Management, University of California , SantaBarbara, California 93106, United States
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36
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Influence of solution pH, ionic strength, and humic acid on cadmium adsorption onto activated biochar: Experiment and modeling. J IND ENG CHEM 2017. [DOI: 10.1016/j.jiec.2016.12.038] [Citation(s) in RCA: 98] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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37
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Valorisation of post-sorption materials: Opportunities, strategies, and challenges. Adv Colloid Interface Sci 2017; 242:35-58. [PMID: 28256201 DOI: 10.1016/j.cis.2016.12.002] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 11/18/2016] [Accepted: 12/06/2016] [Indexed: 01/12/2023]
Abstract
Adsorption is a facile, economic, eco-friendly and low-energy requiring technology that aims to separate diverse compounds (ions and molecules) from one phase to another using a wide variety of adsorbent materials. To date, this technology has been used most often for removal/recovery of pollutants from aqueous solutions; however, emerging post-sorption technologies are now enabling the manufacture of value-added key adsorption products that can subsequently be used for (i) fertilizers, (ii) catalysis, (iii) carbonaceous metal nanoparticle synthesis, (iv) feed additives, and (v) biologically active compounds. These new strategies ensure the sustainable valorisation of post-sorption materials as an economically viable alternative to the engineering of other green chemical products because of the ecological affability, biocompatibility, and widespread accessibility of post-sorption materials. Fertilizers and feed additives manufactured using sorption technology contain elements such as N, P, Cu, Mn, and Zn, which improve soil fertility and provide essential nutrients to animals and humans. This green and effective approach to managing post-sorption materials is an important step in reaching the global goals of sustainability and healthy human nutrition. Post-sorbents have also been utilized for the harvesting of metal nanoparticles via modern catalytic pyrolysis techniques. The resulting materials exhibited a high surface area (>1000m2/g) and are further used as catalysts and adsorbents. Together with the above possibilities, energy production from post-sorbents is under exploration. Many of the vital 3E (energy, environment, and economy) problems can be addressed using post-sorption materials. In this review, we summarize a new generation of applications of post-adsorbents as value-added green chemical products. At the end of each section, scientific challenges, further opportunities, and issues related to toxicity are discussed. We believe this critical evaluation not only delivers essential contextual information to researchers in the field but also stimulates new ideas and applications to further advance post-sorbent applications.
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38
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Lin X, Chen L, Hu X, Feng S, Huang L, Quan G, Wei X, Yang ST. Toxicity of graphene oxide to white moss Leucobryum glaucum. RSC Adv 2017. [DOI: 10.1039/c7ra10096e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Graphene oxide was toxic to white moss Leucobryum glaucum.
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Affiliation(s)
- Xiaowei Lin
- College of Chemistry and Environment Protection Engineering
- Southwest Minzu University
- Chengdu 610041
- China
| | - Lingyun Chen
- College of Chemistry and Environment Protection Engineering
- Southwest Minzu University
- Chengdu 610041
- China
| | - Xin Hu
- College of Chemistry and Environment Protection Engineering
- Southwest Minzu University
- Chengdu 610041
- China
| | - Shicheng Feng
- College of Chemistry and Environment Protection Engineering
- Southwest Minzu University
- Chengdu 610041
- China
| | - Liu Huang
- College of Chemistry and Environment Protection Engineering
- Southwest Minzu University
- Chengdu 610041
- China
| | - Guoping Quan
- College of Chemistry and Environment Protection Engineering
- Southwest Minzu University
- Chengdu 610041
- China
| | - Xue Wei
- College of Chemistry and Environment Protection Engineering
- Southwest Minzu University
- Chengdu 610041
- China
| | - Sheng-Tao Yang
- College of Chemistry and Environment Protection Engineering
- Southwest Minzu University
- Chengdu 610041
- China
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Fan L, Ma Q, Tian J, Li D, Xi X, Dong X, Yu W, Wang J, Liu G. Novel nanofiber yarns synchronously endued with tri-functional performance of superparamagnetism, electrical conductivity and enhanced fluorescence prepared by conjugate electrospinning. RSC Adv 2017. [DOI: 10.1039/c7ra09598h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
[Fe3O4/PANI/PAN]//[Eu(BA)3phen/PAN] heterogeneous nanofiber yarns were fabricated via electrospinning, and the yarns synchronously possess trifunctionality of superparamagnetism, electrical conductivity and enhanced fluorescence.
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Affiliation(s)
- Libing Fan
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun 130022
- China
| | - Qianli Ma
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun 130022
- China
| | - Jiao Tian
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun 130022
- China
| | - Dan Li
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun 130022
- China
| | - Xue Xi
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun 130022
- China
| | - Xiangting Dong
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun 130022
- China
| | - Wensheng Yu
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun 130022
- China
| | - Jinxian Wang
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun 130022
- China
| | - Guixia Liu
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun 130022
- China
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40
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Wang M, Gao B, Tang D. Review of key factors controlling engineered nanoparticle transport in porous media. JOURNAL OF HAZARDOUS MATERIALS 2016; 318:233-246. [PMID: 27427890 DOI: 10.1016/j.jhazmat.2016.06.065] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2016] [Revised: 06/29/2016] [Accepted: 06/30/2016] [Indexed: 05/13/2023]
Abstract
Nanotechnology, an emerging technology, has witnessed rapid development in production and application. Engineered nanomaterials revolutionize the industry due to their unique structure and superior performance. The release of engineered nanoparticles (ENPs) into the environment, however, may pose risks to the environment and public health. To advance current understanding of environmental behaviors of ENPs, this work provides an introductory overview of ENP fate and transport in porous media. It systematically reviews the key factors controlling their fate and transport in porous media. It first provides a brief overview of common ENPs in the environment and their sources. The key factors that govern ENP transport in porous media are then categorized into three groups: (1) nature of ENPs affecting their transport in porous media, (2) nature of porous media affecting ENP transport, and (3) nature of flow affecting ENP transport in porous media. In each group, findings in recent literature on the specific governing factors of ENP transport in porous media are discussed in details. Finally, this work concludes with remarks on the importance of ENP transport in porous media and directions for future research.
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Affiliation(s)
- Mei Wang
- College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, PR China; Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL 32611, USA
| | - Bin Gao
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL 32611, USA.
| | - Deshan Tang
- College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, PR China
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41
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Park CM, Heo J, Her N, Chu KH, Jang M, Yoon Y. Modeling the effects of surfactant, hardness, and natural organic matter on deposition and mobility of silver nanoparticles in saturated porous media. WATER RESEARCH 2016; 103:38-47. [PMID: 27429353 DOI: 10.1016/j.watres.2016.07.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 07/06/2016] [Accepted: 07/10/2016] [Indexed: 06/06/2023]
Abstract
This study aims to provide insights into the mechanisms governing the deposition and retention of silver nanoparticles (AgNPs) in saturated porous media. Column experiments were conducted with quartz sand under saturated conditions to investigate the deposition kinetics of AgNPs, their mobility at different groundwater hardnesses (10-400 mg/L as CaCO3), and humic acid (HA, 0-50 mg/L as dissolved organic carbon [DOC]). An anionic surfactant, sodium dodecyl sulfate (SDS), was used as a dispersing agent to prepare a SDS-AgNPs suspension. The deposition kinetics of AgNPs were highly sensitive to the surfactant concentration, ionic strength, and cation type in solution. The breakthrough curves (BTCs) of SDS-AgNPs suggested that the transport and retention were influenced by groundwater hardness and HA. At low water hardness and high HA, high mobility of SDS-AgNPs was observed in saturated conditions. However, the retention of SDS-AgNPs increased substantially in very hard water with a low concentration of HA, because of a decreased primary energy barrier and the straining effect during the course of transport experiments. A modified clean-bed filtration theory and a two-site kinetic attachment model showed good fits with the BTCs of SDS-AgNPs. The fitted model parameters (katt and kstr) could be used successfully to describe that the retention behaviors were dominated by electrostatic and electrosteric repulsion, based on extended Derjaguin-Landau-Vaerwey-Overbeek calculations.
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Affiliation(s)
- Chang Min Park
- Department of Civil and Environmental Engineering, University of South Carolina, Columbia, 300 Main Street, SC, 29208, USA
| | - Jiyong Heo
- Department of Civil and Environmental Engineering, Korea Army Academy at Young-Cheon, 495 Hogook-ro, Kokyungmeon, Young-Cheon, Gyeongbuk, 38900, South Korea
| | - Namguk Her
- Department of Civil and Environmental Engineering, Korea Army Academy at Young-Cheon, 495 Hogook-ro, Kokyungmeon, Young-Cheon, Gyeongbuk, 38900, South Korea
| | - Kyoung Hoon Chu
- Department of Civil and Environmental Engineering, University of South Carolina, Columbia, 300 Main Street, SC, 29208, USA
| | - Min Jang
- Department of Environmental Engineering, Kwangwoon University, 447-1 Wolgye-Dong, Nowon-Gu, Seoul, South Korea
| | - Yeomin Yoon
- Department of Civil and Environmental Engineering, University of South Carolina, Columbia, 300 Main Street, SC, 29208, USA.
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Sorption Behaviour of Trichlorobenzenes and Polycyclic Aromatic Hydrocarbons in the Absence or Presence of Carbon Nanotubes in the Aquatic Environment. WATER AIR AND SOIL POLLUTION 2016. [DOI: 10.1007/s11270-016-3073-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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43
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Hegde K, Brar SK, Verma M, Surampalli RY. Current understandings of toxicity, risks and regulations of engineered nanoparticles with respect to environmental microorganisms. ACTA ACUST UNITED AC 2016. [DOI: 10.1007/s41204-016-0005-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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