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Shahi M, Alavi Moghaddam MR, Hosseini SM, Hashemi H, Persson M, Kowsari E. Transport and retention of functionalized graphene oxide nanoparticles in saturated/unsaturated porous media: Effects of flow velocity, ionic strength and initial particle concentration. CHEMOSPHERE 2024; 354:141714. [PMID: 38521106 DOI: 10.1016/j.chemosphere.2024.141714] [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: 05/09/2023] [Revised: 10/24/2023] [Accepted: 03/12/2024] [Indexed: 03/25/2024]
Abstract
The widespread use of nanomaterials has raised the threat of nanoparticles (NPs) infection of soils and groundwater resources. This research aims to investigate three parameters including flow velocity, ionic strength (IS), and initial particle concentration effects on transport behavior and retention mechanism of functionalization form of graphene oxide with polyvinylpyrrolidone (GO-PVP). The transport of GO-PVP was investigated in a laboratory-scale study through saturated/unsaturated (Saturation Degree = 0.91) sand columns. Experiments were conducted on flow velocity from 1.20 to 2.04 cm min-1, initial particle concentration from 10 to 50 mg L-1, and IS of 5-20 mM. The retention of GO-PVP was best described using the one-site kinetic attachment model in HYDRUS-1D, which accounted for the time and depth-dependent retention. According to breakthrough curves (BTCs), the lower transport related to the rate of mass recovery of GO-PVP was obtained by decreasing flow velocity and initial particle concentration and increasing IS through the sand columns. Increasing IS could improve the GO-PVP retention (based on katt and Smax) in saturated/unsaturated media; katt increases from 2.81 × 10-3 to 3.54 × 10-3 s-1 and Smax increases from 0.37 to 0.42 mg g-1 in saturated/unsaturated conditions, respectively. Our findings showed that the increasing retention of GO-PVP through the sand column under unsaturated condition could be recommended for the reduction of nanoparticles danger of ecosystem exposure.
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Affiliation(s)
- Mahsa Shahi
- Civil & Environmental Engineering Department (CEE), Amirkabir University of Technology (Tehran Polytechnic), Hafez Ave., 424, 15875-4413 Tehran, Iran; Division of Water Resources Engineering, Department of Building and Environmental Technology, Lund University, Box 118, SE-221 00 Lund, Sweden
| | - Mohammad Reza Alavi Moghaddam
- Civil & Environmental Engineering Department (CEE), Amirkabir University of Technology (Tehran Polytechnic), Hafez Ave., 424, 15875-4413 Tehran, Iran.
| | - Seiyed Mossa Hosseini
- Physical Geography Department, University of Tehran, 16th Azar St., Enghelab Sq, 14155-6465 Tehran, Iran
| | - Hossein Hashemi
- Division of Water Resources Engineering, Department of Building and Environmental Technology, Lund University, Box 118, SE-221 00 Lund, Sweden
| | - Magnus Persson
- Division of Water Resources Engineering, Department of Building and Environmental Technology, Lund University, Box 118, SE-221 00 Lund, Sweden
| | - Elaheh Kowsari
- Department of Chemistry, Amirkabir University of Technology (Tehran Polytechnic), Hafez Ave., 424, 15875-4413 Tehran, Iran
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Fu J, Gao B, Xu H, Hao S, Ren J, Wu J, Sun Y. Effects of biofilms on the retention and transport of PFOA in saturated porous media. JOURNAL OF HAZARDOUS MATERIALS 2023; 443:130392. [PMID: 36444074 DOI: 10.1016/j.jhazmat.2022.130392] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/30/2022] [Accepted: 11/10/2022] [Indexed: 06/16/2023]
Abstract
Understanding the fate and transport of perfluorooctanoic acid (PFOA) in soil and groundwater is essential to reliable assessments of its risks. This study investigated the impacts of Gram-positive Bacillus subtilis (BS), Gram-negative Pseudomonas aeruginosa (PA) and wild microbiota (WM) biofilm on the transport of PFOA in saturated sand columns at two ionic strengths (i.e., 1.0 and 20.0 mM NaCl). The retention of PFOA in biofilm-coated sand columns was higher than that in uncoated sand columns, due to biofilm-induced reinforced hydrophobic interactions and surface roughness, and decreased zeta potential. However, the retention effects varied among biofilm bacterial species with PFOA retardation factors in PA, WM and BS columns of 1.29-1.38, 1.21-1.29 and 1.11-1.15, respectively. Notably, PA biofilm had the most pronounced effect on PFOA retention. While increasing ionic strength promoted the retention of PFOA in BS biofilm-coated sand, it had no significant impact on PFOA transport in PA and WM biofilm-coated sand. This could be attributed to the differences in biofilm composition, deviating the ionic strengths effects on electrostatic double layer compression. The advection dispersion equation coupled with two-site kinetic retention model well described the transport of PFOA in all saturated columns. Our findings reveal that biofilm plays important roles in PFOA transport in porous media, instructive for risk assessment and remediation of PFOA contamination.
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Affiliation(s)
- Jiaju Fu
- School of Earth Sciences and Engineering, Hydrosciences Department, Technology Innovation Center for Ecological Monitoring & Restoration Project on Land (Arable), Nanjing University, Nanjing 210023, China
| | - Bin Gao
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL 32611, USA
| | - Hongxia Xu
- School of Earth Sciences and Engineering, Hydrosciences Department, Technology Innovation Center for Ecological Monitoring & Restoration Project on Land (Arable), Nanjing University, Nanjing 210023, China
| | - Shefeng Hao
- Technology Innovation Center for Ecological Monitoring & Restoration Project on Land (Arable), Ministry of Natural Resources Geological Survey of Jiangsu Province, Nanjing 210018, China
| | - Jinghua Ren
- Technology Innovation Center for Ecological Monitoring & Restoration Project on Land (Arable), Ministry of Natural Resources Geological Survey of Jiangsu Province, Nanjing 210018, China
| | - Jichun Wu
- School of Earth Sciences and Engineering, Hydrosciences Department, Technology Innovation Center for Ecological Monitoring & Restoration Project on Land (Arable), Nanjing University, Nanjing 210023, China
| | - Yuanyuan Sun
- School of Earth Sciences and Engineering, Hydrosciences Department, Technology Innovation Center for Ecological Monitoring & Restoration Project on Land (Arable), Nanjing University, Nanjing 210023, China.
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Wang D, Zhang J, Cao R, Zhang Y, Li J. The detection and characterization techniques for the interaction between graphene oxide and natural colloids: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 808:151906. [PMID: 34838546 DOI: 10.1016/j.scitotenv.2021.151906] [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: 09/17/2021] [Revised: 11/16/2021] [Accepted: 11/19/2021] [Indexed: 06/13/2023]
Abstract
The high dispersibility of graphene oxide (GO) and the universality of natural colloids (clay minerals, (hydr)oxides of Al, Fe, silica, etc.) make them interact easily. Many kinds of analytical methods have been used to study the interaction between GO and natural colloids. This review provides a comprehensive overview of analytical methods for the detection and quantification of interaction process. We highlighted the influence of the most relevant environmental factors (ionic strength, pH, etc.) on batch experiment, quartz crystal microbalance with dissipation monitoring measurements, and column experiments. Besides, the benefits and drawbacks of spectroscopic, microscopic techniques, theoretical models, calculation and time-resolved dynamic light scattering methods also have discussed in this work. This review can give some guidance to researchers in their selection and combination of the technique for the research of the interaction between GO and natural colloids.
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Affiliation(s)
- De Wang
- CAS Key Laboratory of Photovoltaic and Energy Conservation Materials, Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, PR China; University of Science and Technology of China, Hefei 230026, PR China
| | - Jianfeng Zhang
- CAS Key Laboratory of Photovoltaic and Energy Conservation Materials, Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, PR China; University of Science and Technology of China, Hefei 230026, PR China
| | - Ruya Cao
- CAS Key Laboratory of Photovoltaic and Energy Conservation Materials, Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, PR China; University of Science and Technology of China, Hefei 230026, PR China
| | - Yingzi Zhang
- CAS Key Laboratory of Photovoltaic and Energy Conservation Materials, Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, PR China; University of Science and Technology of China, Hefei 230026, PR China
| | - Jiaxing Li
- CAS Key Laboratory of Photovoltaic and Energy Conservation Materials, Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, PR China; University of Science and Technology of China, Hefei 230026, PR China; Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, PR China.
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Liu G, Li H, Liu Y, Jin R, Zhou J, Ren Z, Wang Z, Yan C. Extracellular electron transfer influences the transport and retention of ferrihydrite nanoparticles in quartz sand coated with Shewanella oneidensis biofilm. JOURNAL OF HAZARDOUS MATERIALS 2021; 417:126023. [PMID: 33992002 DOI: 10.1016/j.jhazmat.2021.126023] [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: 02/04/2021] [Revised: 04/28/2021] [Accepted: 04/29/2021] [Indexed: 06/12/2023]
Abstract
Microbial biofilm has been found to impact the mobility of nanoparticles in saturated porous media by altering physicochemical properties of collector surface. However, little is known about the influence of biofilm's biological activity on nanoparticle transport and retention. Here, the transport of ferrihydrite nanoparticles (FhNPs) was studied in quartz sands coated with biofilm of Shewanella oneidensis MR-1 that is capable of reducing Fe(III) through extracellular electron transfer (EET). It was found that MR-1 biofilm coating enhanced FhNPs' deposition under different pH/ionic strength conditions and humic acid concentrations. More importantly, when the influent electron donor (glucose) concentration was increased to promote biofilm's EET activity, the breakthrough of FhNPs in biofilm-coated sands was inhibited. A lack of continuous and stable supply of electron donor, on the contrary, led to remobilization and release of the originally retained FhNPs. Column experiments with biofilm of EET-deficient MR-1 mutants (ΔomcA/ΔmtrC and ΔcymA) further indicated that the impairment of EET activity decreased the retention of FhNPs. It is proposed that the effective surface binding and adhesion of FhNPs that is required by direct EET cannot be neglected when evaluating the transport of FhNPs in sands coated with electroactive biofilm.
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Affiliation(s)
- Guangfei Liu
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China; Key Laboratory of Eco-restoration of Regional Contaminated Environment, Shenyang University, Shenyang 110000, China.
| | - Hanyi Li
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Yang Liu
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Ruofei Jin
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Jiti Zhou
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Zhen Ren
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Zhiqiang Wang
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Chen Yan
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
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Bai H, Lamy E. Bacteria transport and deposition in an unsaturated aggregated porous medium with dual porosity. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:18963-18976. [PMID: 32342416 DOI: 10.1007/s11356-020-08783-4] [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: 12/29/2019] [Accepted: 04/06/2020] [Indexed: 06/11/2023]
Abstract
Bacterial transport and deposition play an important role in the assessment and prediction of subsurface pollution risks. Bacteria transport experiments were performed under unsaturated flow conditions in an aggregated porous medium at the laboratory column scale, to investigate how the inter- and intra-aggregated pore space of this medium could affect transport and deposition under unsaturated flow conditions, where inter- and intra-pore spaces are not fully activated. The results obtained through experimental observations and numerical simulations showed that some intra- and inter-pore space of this medium was excluded from bacteria transport and retention, as confirmed by the non-uniform transport of bacteria pathways in the aggregated porous media under unsaturated flow conditions. Capillary energy was higher the than other forces acting at bacteria air-water-solid interfaces. If this energy should contribute in increasing bacteria deposition under unsaturated conditions, similar to what has been reported for sandy media, similar overall retention of E. coli and R. rhodochrous was obtained under unsaturated flow conditions, suggesting that capillary energy was not the driving force for bacteria deposition.
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Affiliation(s)
- Hongjuan Bai
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, 450001, People's Republic of China
- Département de Génie des Procédés Industriels, Laboratoire TIMR, Université de Technologie de Compiègne - Alliance Sorbonne Université, F-60205, Compiègne cedex, France
| | - Edvina Lamy
- Département de Génie des Procédés Industriels, Laboratoire TIMR, Université de Technologie de Compiègne - Alliance Sorbonne Université, F-60205, Compiègne cedex, France.
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6
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Zhang Y, Wayner CC, Wu S, Liu X, Ball WP, Preheim SP. Effect of Strain-Specific Biofilm Properties on the Retention of Colloids in Saturated Porous Media under Conditions of Stormwater Biofiltration. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:2585-2596. [PMID: 33523627 DOI: 10.1021/acs.est.0c06177] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Filter performance can be affected by bacterial colonization of the filtration media, yet little is known about how naturally occurring bacteria modify the surface properties of filtration media to affect colloidal removal. We used sand columns and simulated stormwater conditions to study the retention of model colloidal particles, carboxyl-modified-latex (CML) beads, in porous media colonized by naturally occurring bacterial strains. Colloid retention varied substantially across identical columns colonized by different, in some cases closely related, bacterial strains in a cell density independent manner. Atomic force microscopy was applied to quantify the interaction energy between CML beads and each bacterial strain's biofilm surface. We found interaction energy between CML and each strain was significantly different, with adhesive energies between the biofilm and CML, presumed to be associated with polymer-surface bonding, a better predictor of CML retention than other strain characteristics. Overall, the findings suggest that interactions with biopolymers in naturally occurring bacterial biofilms strongly influence colloid retention in porous media. This work highlights the need for more investigation into the role of biofilm microbial community composition on colloid removal in porous media to improve biofilter design and operation.
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Affiliation(s)
- Yue Zhang
- Department of Environmental Health and Engineering, Johns Hopkins University, 3400 N. Charles Street, Baltimore, Maryland 21218, United States
| | - Claire C Wayner
- Department of Environmental Health and Engineering, Johns Hopkins University, 3400 N. Charles Street, Baltimore, Maryland 21218, United States
| | - Shanshan Wu
- Department of Environmental Health and Engineering, Johns Hopkins University, 3400 N. Charles Street, Baltimore, Maryland 21218, United States
| | - Xitong Liu
- Department of Civil and Environmental Engineering, The George Washington University, Science & Engineering Hall, 800 22nd Street NW, Washington, District of Columbia 20052, United States
| | - William P Ball
- Department of Environmental Health and Engineering, Johns Hopkins University, 3400 N. Charles Street, Baltimore, Maryland 21218, United States
| | - Sarah P Preheim
- Department of Environmental Health and Engineering, Johns Hopkins University, 3400 N. Charles Street, Baltimore, Maryland 21218, United States
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7
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Ramazanpour Esfahani A, Batelaan O, Hutson JL, Fallowfield HJ. Transport and retention of graphene oxide nanoparticles in sandy and carbonaceous aquifer sediments: Effect of physicochemical factors and natural biofilm. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 278:111419. [PMID: 33126193 DOI: 10.1016/j.jenvman.2020.111419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 08/25/2020] [Accepted: 09/11/2020] [Indexed: 06/11/2023]
Abstract
There is a paucity of information regarding the interaction between GONPs and natural aquifer sediments. Therefore, batch and column experiments were carried out to determine the transport, retention and attachment behavior of GONPs with the surfaces of native aquifer sediments. The experiments were performed with sediments comprising contrasting mineralogical features (sand grains, quartz and limestone sediments), at different temperatures, ionic strength and compositions. Uniquely, this research also investigated the effect of natural biofilm on the retention behavior of nanoparticles in porous media. The retention rate of GONPs at 22 °C was higher than at 4 °C. Moreover, there was greater retention of GONPs onto the surfaces of collectors at higher ionic strengths and cation valence. The retention profiles (RPs) of GONPs in pristine porous media at low ionic strength were linear, which contrasted with hyper-exponential shape of RPs at high ionic strength. The size-distribution analysis of retained GONPs showed decreasing particle diameter with increasing distance from the column inlet at high ionic strength and equal diameter at low ionic strengths. The GONP retention rate was higher for natural porous media than for sand, due to the presence of metal oxides heterogeneities. The presence of biofilm on porous media increased the retention rate of GONPs when compared to the porous media in the absence of biofilm.
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Affiliation(s)
- Amirhosein Ramazanpour Esfahani
- College of Science and Engineering, Flinders University, Adelaide, Australia; National Centre for Groundwater Research and Training, SA, 5001, Australia.
| | - Okke Batelaan
- College of Science and Engineering, Flinders University, Adelaide, Australia; National Centre for Groundwater Research and Training, SA, 5001, Australia
| | - John L Hutson
- College of Science and Engineering, Flinders University, Adelaide, Australia
| | - Howard J Fallowfield
- College of Science and Engineering, Flinders University, Adelaide, Australia; National Centre for Groundwater Research and Training, SA, 5001, Australia
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Cotransport of Cu with Graphene Oxide in Saturated Porous Media with Varying Degrees of Geochemical Heterogeneity. WATER 2020. [DOI: 10.3390/w12020444] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Graphene oxide (GO) is likely to encounter heavy metals due to its widespread use and inevitable release into the subsurface environment, where the ubiquitous presence of iron oxides (e.g., hematite) would affect their interaction and transport. The present study aimed to investigate the cotransport of GO (20 mg L−1) and copper (0.05 mM CuCl2) in the presence of varying degrees of geochemical heterogeneity represented by iron oxide-coated sand fractions (ω = 0‒0.45) in water-saturated columns under environmentally relevant physicochemical conditions (1 mM KCl at pH 5.0‒9.0). The Langmuir-fitted maximum adsorption capacity of Cu2+ by GO reached 137.6 mg g−1, and the presence of 0.05 mM Cu2+ decreased the colloidal stability and subsequent transport of GO in porous media. The iron oxide coating was found to significantly inhibit the transport of GO and Cu-loaded GO in sand-packed columns, which can be explained by the favorable deposition of the negatively charged GO onto patches of the positively charged iron oxide coatings at pH 5.0. Increasing the solution pH from 5.0 to 9.0 promoted the mobility of GO, with the exception of pH 7.5, in which the lowest breakthrough of GO was observed. This is possibly due to the fact that the surface charge of iron oxide approaches zero at pH 7.5, suggesting that new “favorable” sites are available for GO retention. This study deciphered the complicated interactions among engineered nanomaterials, heavy metals, and geochemical heterogeneity under environmentally relevant physicochemical conditions. Our results highlight the significant role of geochemical heterogeneity, such as iron oxide patches, in determining the fate and transport of GO and GO-heavy metal association in the subsurface environment.
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He J, Wang D, Zhang W, Zhou D. Deposition and release of carboxylated graphene in saturated porous media: Effect of transient solution chemistry. CHEMOSPHERE 2019; 235:643-650. [PMID: 31276877 DOI: 10.1016/j.chemosphere.2019.06.187] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 06/21/2019] [Accepted: 06/24/2019] [Indexed: 06/09/2023]
Abstract
Chemical perturbation of pore-water in porous media may remobilize and release deposited colloids/nanomaterials into bulk flow. This re-entrainment process is important to accurately assessing the fate and transport of colloids/nanomaterials in the subsurface. This study investigated deposition and subsequent release of carboxylated graphene nanomaterials (CG) in water-saturated sand columns by first depositing CG at 100 mM NaCl or 2 mM CaCl2 (Phase 1), followed by Phase 2 (elution with sequences of 50, 10, and 1 mM NaCl, or sequences of 0.5 and 0.1 mM CaCl2), and then Phase 3 elution using deionized water. Approximate 89.2%-98.7% of injected CG was retained in sand through Derjaguin-Landau-Verwey-Overbeek (DLVO) interactions, Ca2+ bridging, and straining in Phase 1. Sequential reduction of ionic strength in Phases 2 and 3 resulted in increased release of deposited CG mainly due to the expansion of the electrical double layer thickness and thus decreased depth of the attractive secondary minimum. With increasing pulses of flushing solution, unrecoverable CG increased because weakly associated CG via the secondary minimum was likely translated to immobile regions. Significant tailing of CG released in Phase 3 suggests that CG retained in CaCl2 was more resistant upon detachment than in NaCl. In cation exchange experiment, only 0.7% of applied CG was released, possibly ascribed to the CG remobilized by cation exchange was immediately re-entrained by the secondary minimum in 50 mM NaCl. Our findings indicate that retained nanomaterials (e.g., CG) can be remobilized and transported downward in transient solution chemistries, raising concerns about their potential migration risk to groundwater.
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Affiliation(s)
- Jianzhou He
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, MI, 48824, United States
| | - Dengjun Wang
- National Research Council Resident Research Associate at the U.S. Environmental Protection Agency, Ada, OK, 74820, United States.
| | - Wei Zhang
- Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, MI, 48824, United States
| | - Dongmei Zhou
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China.
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Tang Y, Wang X, Yan Y, Zeng H, Wang G, Tan W, Liu F, Feng X. Effects of myo-inositol hexakisphosphate, ferrihydrite coating, ionic strength and pH on the transport of TiO 2 nanoparticles in quartz sand. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 252:1193-1201. [PMID: 31252117 DOI: 10.1016/j.envpol.2019.06.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 05/18/2019] [Accepted: 06/03/2019] [Indexed: 06/09/2023]
Abstract
Evaluating the fate and transport of nanoparticles (NPs) in the subsurface environment is critical for predicting the potential risks to both of the human health and environmental safety. It is believed that numerous environmental factors conspire to control the transport dynamics of nanoparticles, yet the effects of organic phosphates on nanoparticles transport remain largely unknown. In this work, we quantified the transport process of TiO2 nanoparticle (nTiO2) and their retention patterns in water-saturated sand columns under various myo-inositol hexakisphosphate (IHP) or phosphate (Pi) concentrations (0-180 μM P), ferrihydrite coating fractions (λ, 0-30%), ionic strengths (1-50 mM KCl), and pH values (4-8). The transport of nTiO2 was enhanced at increased P concentration due to the enhanced colloidal stability. As compared with Pi at the equivalent P level, IHP showed stronger effect on the electrokinetic properties of nTiO2 particles due to its relatively more negative charge and higher adsorption affinity, thereby facilitating the nTiO2 transport (and thus reduced retention) in porous media. At the IHP concentration of 5 μM, the retention of nTiO2 increased with increasing λ and ionic strength, while decreased with pH. In addition, the retention profiles of nTiO2 showed a typical hyperexponential pattern for most scenarios mainly due to the unfavorable attachment, and can be well described by a hybrid mathematical model that coupled convection dispersion equations with a two-site kinetic model and DLVO theory. These quantitative estimations revealed the importance of IHP on affecting the transport of nTiO2 typically in phosphorus-enriched environments. It provides new insights into advanced understanding of the co-transport of nanoparticles and phosphorus in natural systems, essential for both nanoparticle exposure and water eutrophication.
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Affiliation(s)
- Yadong Tang
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agriculture University, Wuhan, 430070, China
| | - Xiaoming Wang
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agriculture University, Wuhan, 430070, China
| | - Yupeng Yan
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agriculture University, Wuhan, 430070, China
| | - Huan Zeng
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agriculture University, Wuhan, 430070, China
| | - Gang Wang
- Department of Soil and Water Sciences, China Agricultural University, Beijing, 100193, China
| | - Wenfeng Tan
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agriculture University, Wuhan, 430070, China
| | - Fan Liu
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agriculture University, Wuhan, 430070, China
| | - Xionghan Feng
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agriculture University, Wuhan, 430070, China.
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Li J, Chen J, Lu T, Wang Y, Zhang H, Shang Z, Li D, Zhou Y, Qi Z. Effects of low-molecular weight organic acids on the transport of graphene oxide nanoparticles in saturated sand columns. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 666:94-102. [PMID: 30798247 DOI: 10.1016/j.scitotenv.2019.02.242] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Revised: 02/12/2019] [Accepted: 02/15/2019] [Indexed: 06/09/2023]
Abstract
The impact of low-molecular weight organic acids (LMWOAs) on the transport of graphene oxide (GO) nanoparticles in saturated quartz sand was investigated. The different LMWOAs such as acetic acid, glycolic acid, malonic acid, and tartaric acid were used in experiments. The effects of LMWOAs on the transport of GO were markedly dependent upon organic acid species. In general, the transport enhancement effects followed the order of tartaric acid > malonic acid > glycolic acid > acetic acid, the regular pattern might be related to amount and type of functional groups of LMWOAs. Additionally, the different enhanced ability of LMWOAs was determined by their molecular weight. In the presence of Na+, the main deposition mechanism was ascribed to steric hindrance and competition between LMWOA and GO for deposition sites on grain surfaces under acidic conditions (i.e., pH 4.0 and 5.0). Batch adsorption experiments indicated the extents of competitive adsorption between LMWOAs and GO on quartz sand. In addition, the DLVO theory was not applicable to describe the transport of GO in the presence of LMWOAs at pH 5.0. Nevertheless, electrostatic and steric repulsion, existing between GO and sand grains, were the most important deposition mechanisms under the neutral condition (i.e., pH 7.0). When Ca2+ was the main cation in the background solution, the transport enhancement effects followed quite similar order to those of Na+, mainly due to different complexing strength of organic acids.
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Affiliation(s)
- Jiaqi Li
- Institute of Environmental and Analytical Sciences, Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Jiuyan Chen
- Institute of Environmental and Analytical Sciences, Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Taotao Lu
- Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Nankai University, Tianjin 300350, China; Department of Hydrology, University of Bayreuth, Bayreuth D-95440, Germany
| | - Ying Wang
- Henan University Minsheng College, Kaifeng 475004, China
| | - Haojing Zhang
- Institute of Environmental and Analytical Sciences, Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Zhongbo Shang
- Institute of Environmental and Analytical Sciences, Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Deliang Li
- Institute of Environmental and Analytical Sciences, Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Yanmei Zhou
- Institute of Environmental and Analytical Sciences, Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Zhichong Qi
- Institute of Environmental and Analytical Sciences, Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China; Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Nankai University, Tianjin 300350, China.
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12
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Dong S, Gao B, Sun Y, Guo H, Wu J, Cao S, Wu J. Visualization of graphene oxide transport in two-dimensional homogeneous and heterogeneous porous media. JOURNAL OF HAZARDOUS MATERIALS 2019; 369:334-341. [PMID: 30784963 DOI: 10.1016/j.jhazmat.2019.02.042] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 01/31/2019] [Accepted: 02/12/2019] [Indexed: 06/09/2023]
Abstract
Graphene oxide (GO) has been indicated to be biotoxic and risky in environment, its environmental behavior thus has received increasing attention in recent. In this study, homogeneous and heterogeneous sand tanks were used to examine the transport behaviors of GO nanoparticles in two-dimensional (2-D) porous media under various conditions. Light transmission visualization (LTV) technology was applied to visualize the real-time transport, retention, and release of GO. GO transport in 2-D porous media was simulated with a simplified Double Monod model. GO mobility decreased with the increasing solution ionic strength (IS) and decreasing media grain size. Preferential flow played an important role in GO transport in 2-D heterogeneous porous media. Even without vertical flow in the sand tanks, GO still spread vertically through dispersion, suggesting the importance of the dispersion process to nanoparticle fate and transport in 2-D porous media. LTV images and breakthrough curves showed that some of the previous retained GO particles were instantaneously remobilized with IS decreasing. With the consideration of the vertical dispersion, simulations of the Double Monod model matched the experimental data well. Findings from this work contribute to expand current knowledge of environmental fate and transport of GO, leading to better assessment and prediction of its environmental risks.
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Affiliation(s)
- Shunan Dong
- Key Laboratory of Surficial Geochemisty, Ministry of Education, School of Earth Sciences and Engineering, Hydrosciences Department, Nanjing University, Nanjing 210023, China
| | - Bin Gao
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL 32611, United States
| | - Yuanyuan Sun
- Key Laboratory of Surficial Geochemisty, Ministry of Education, School of Earth Sciences and Engineering, Hydrosciences Department, Nanjing University, Nanjing 210023, China.
| | - Hongyan Guo
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Jianfeng Wu
- Key Laboratory of Surficial Geochemisty, Ministry of Education, School of Earth Sciences and Engineering, Hydrosciences Department, Nanjing University, Nanjing 210023, China
| | - Shaohua Cao
- Key Laboratory of Surficial Geochemisty, Ministry of Education, School of Earth Sciences and Engineering, Hydrosciences Department, Nanjing University, Nanjing 210023, China
| | - Jichun Wu
- Key Laboratory of Surficial Geochemisty, Ministry of Education, School of Earth Sciences and Engineering, Hydrosciences Department, Nanjing University, Nanjing 210023, China.
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13
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Xia T, Ma P, Qi Y, Zhu L, Qi Z, Chen W. Transport and retention of reduced graphene oxide materials in saturated porous media: Synergistic effects of enhanced attachment and particle aggregation. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 247:383-391. [PMID: 30690234 DOI: 10.1016/j.envpol.2019.01.052] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 12/07/2018] [Accepted: 01/14/2019] [Indexed: 06/09/2023]
Abstract
The increasing production and use of graphene-based nanomaterials (e.g., graphene oxide (GO) and reduced graphene oxide (RGO)) will lead to their environmental release. To date, transport of RGOs in saturated porous media is poorly understood. Here, we examined the transport behaviors of three RGO materials obtained by reducing a GO product with commonly used reducing agents - N2H4, NaBH4 and L-ascorbic acid (referred to as N2H4-RGO, NaBH4-RGO and VC-RGO, respectively). When the dominant background cation was Na+, K+ or Mg2+, the mobility of the RGOs and GO in saturated quartz sand correlated well with their surface C/O ratio. Interestingly, the lower mobility of the more reduced materials (the ones with higher C/O values) was not only the results of their less negative surface charges and larger particle sizes, but also the outcome of their greater hydrophobicity, in line with the calculated extended Derjaguin-Landau-Verwey-Overbeek (XDLVO) profiles. Counterintuitively, when the background cation was Ca2+, the least reduced material among the three RGOs, VC-RGO, exhibited the lowest mobility. Analysis of electrophoretic and aggregation properties, as well as pH-effect experiments, indicated that the surprisingly low mobility of VC-RGO was attributable to the strong cation-bridging effect (primarily Ca2+-bridging between RGO and quartz sand) associated with this material, as VC-RGO contained the highest amount of surface carboxyl group (a strong metal-binding moiety). Notably, enhanced attachment (due to increased hydrophobic effect and cation-bridging) and particle aggregation appeared to work synergistically to increase RGO retention, as the attachment of large RGO aggregates significantly enhanced particle straining by narrowing the flow path. These observations reveal a largely overlooked link between the mobility of graphene-based materials and their key physicochemical properties.
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Affiliation(s)
- Tianjiao Xia
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, 712100, China; College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, Tianjin, 300350, China
| | - Pengkun Ma
- College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, Tianjin, 300350, China
| | - Yu Qi
- College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, Tianjin, 300350, China
| | - Lingyan Zhu
- College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, Tianjin, 300350, China
| | - Zhichong Qi
- College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, Tianjin, 300350, China
| | - Wei Chen
- College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, Tianjin, 300350, China.
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14
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Zhao L, Yang ST, Yilihamu A, Wu D. Advances in the applications of graphene adsorbents: from water treatment to soil remediation. REV INORG CHEM 2019. [DOI: 10.1515/revic-2018-0020] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
AbstractGraphene, a novel carbon allotrope, is single-layered graphite with honeycomb lattice. Its unique structure endows graphene many outstanding physical/chemical properties and a large surface area, which are beneficial to its applications in many areas. The potential applications of graphene in pollution remediation are adsorption, membrane separation, catalysis, environmental analysis, and so on. The adsorption efficiency of graphene adsorbents largely depends on its surface area, porous structure, oxygen-containing groups and other functional groups, adsorption conditions, and also the properties of adsorbates. With appropriate modifications, graphene materials are mostly efficient adsorbents for organic pollutants (e.g. dyes, pesticides, and oils) and inorganic pollutants (e.g. metal ions, nonmetal ions, and gas). Since our first report of graphene adsorbents in 2010, plenty of studies have been dedicated to developing various graphene adsorbents and to evaluating their performance in treating contaminated water. Recently, there is a growing trend in graphene adsorbents that could be applied in soil remediation, where the situation is much more complicated than in aqueous systems. Herein, we review the design of graphene adsorbents for water treatment and analyze their potential in soil remediation. Several suggestions to accelerate the research on graphene-based soil remediation technology are proposed.
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Affiliation(s)
- Lianqin Zhao
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Sheng-Tao Yang
- College of Chemistry and Environment Protection Engineering, Southwest Minzu University, Chengdu 610041, China
| | - Ailimire Yilihamu
- College of Chemistry and Environment Protection Engineering, Southwest Minzu University, Chengdu 610041, China
| | - Deyi Wu
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
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15
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Jahan S, Alias YB, Bakar AFBA, Yusoff IB. Transport and retention behavior of carbonaceous colloids in natural aqueous medium: Impact of water chemistry. CHEMOSPHERE 2019; 217:213-222. [PMID: 30415119 DOI: 10.1016/j.chemosphere.2018.11.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 10/21/2018] [Accepted: 11/02/2018] [Indexed: 06/09/2023]
Abstract
Carbon based materials are emerging as a sustainable alternative to their metal-oxide counterparts. However, their transport behavior under natural aqueous environment is poorly understood. This study investigated the transport and retention profiles of carbon nanoparticles (CNPs) and graphene oxide quantum dots (GOQDs) through column experiments in saturated porous media. CNPs and GOQDs (30 mg/L) were dispersed in natural river water (RW) and passed through the column at a flow rate of 1 mL/min, which mimicking the natural water flow rate. After every 10 min, the column effluents were collected and the mass recovery and retention profiles were monitored. Results indicated that the transport of both carbonaceous colloids was predominantly controlled by surface potential and ionic composition of natural water. The CNPs with its high surface potential (-40 mV) exhibited more column transport and was less susceptible to solution pH (5.6-6.8) variation as compared to GOQDs (-24 mV). The results showed that, monovalent salt (NaCl) was one of the dominating factors for the retention and transport of carbonaceous colloids compared to divalent salt (CaCl2). Furthermore, the presence of natural organic matter (NOM) increased the transport of both carbonaceous colloids and thereby decreases the tendency for column retention.
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Affiliation(s)
- Shanaz Jahan
- Department of Geology, Faculty of Science, University of Malaya, Kuala Lumpur, 50603, Malaysia.
| | - Yatimah Binti Alias
- Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur, 50603, Malaysia; University of Malaya Centre for Ionic Liquids (UMCiL), University of Malaya, Kuala Lumpur, 50603, Malaysia
| | | | - Ismail Bin Yusoff
- Department of Geology, Faculty of Science, University of Malaya, Kuala Lumpur, 50603, Malaysia
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16
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Li Y, Koopal LK, Xiong J, Wang M, Yang C, Tan W. Influence of humic acid on transport, deposition and activity of lysozyme in quartz sand. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 242:298-306. [PMID: 29990937 DOI: 10.1016/j.envpol.2018.06.096] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Revised: 06/24/2018] [Accepted: 06/27/2018] [Indexed: 06/08/2023]
Abstract
Interaction with natural organic matter (NOM) is hypothesized to impact the fate and bioavailability of enzymes and some hazardous proteins in terrestrial and aquatic environments. By using saturated column transport experiments the transport and deposition of the model enzyme lysozyme (LSZ), in the absence and presence of purified Aldrich humic acid (PAHA), was investigated at a series of mass ratios PAHA/LSZ at pH 5 and 8 and two ionic strength values (0.5 mM and 50 mM KCl solution). PAHA decreased LSZ transport under all conditions. The shapes of breakthrough curves (BTCs) and retention profiles (RPs) during cotransport of both colloids evolved from symmetrical to blocking with time and from flat to hyper-exponential with depth, respectively, in response to increases in mass ratio PAHA/LSZ. The results indicated that the "size-selective retention" and concurrent homo- and hetero-aggregation induced straining, which resulted in preferential retention of relatively large PAHA-LSZ aggregates in the column and elution of relatively small ones. Due to differences in aggregate size, in general, the enzyme activity of LSZ in the effluent was larger and that of the retained LSZ was smaller than that of the influent. Therefore, protein transport process could partially increase the enzyme activity and bring potential environmental hazards.
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Affiliation(s)
- Yan Li
- Key Laboratory of Horticultural Plant Biology, The Ministry of Education, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Luuk K Koopal
- Key Laboratory of Horticultural Plant Biology, The Ministry of Education, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, PR China; Laboratory of Physical Chemistry and Soft Matter, Wageningen University and Research, Stippeneng 4, 6708 WE Wageningen, The Netherlands
| | - Juan Xiong
- Key Laboratory of Horticultural Plant Biology, The Ministry of Education, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Mingxia Wang
- Key Laboratory of Horticultural Plant Biology, The Ministry of Education, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Chenfeng Yang
- Key Laboratory of Horticultural Plant Biology, The Ministry of Education, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Wenfeng Tan
- Key Laboratory of Horticultural Plant Biology, The Ministry of Education, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, PR China.
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17
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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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18
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Dong S, Sun Y, Gao B, Shi X, Xu H, Wu J, Wu J. Retention and transport of graphene oxide in water-saturated limestone media. CHEMOSPHERE 2017; 180:506-512. [PMID: 28431388 DOI: 10.1016/j.chemosphere.2017.04.052] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 03/27/2017] [Accepted: 04/12/2017] [Indexed: 06/07/2023]
Abstract
In this work, column experiments were conducted to investigate the transport characteristics of graphene oxide (GO) nanoparticles in limestone media under various electrolytes, solution pH, and humic acid (HA) concentration conditions. In the limestone media, GO exhibited relatively low mobility with the mass recovery rate lower than 65.2%, even when solution ionic strength was low. The presence of HA enhanced its mobility. In addition, the presence of S2-, a divalent anion, also promoted GO transport in limestone media compared to Cl- under similar ionic strength conditions through neutralizing more positive charge and thus diminishing the cation bridging. Solution pH showed slight effect on the transport of GO in limestone with the mass recovery range from 40.3% to 51.7%. Over all, decreases in solution pH, HA concentration and increases in solution ionic strength reduced the mobility of GO in the limestone media under the tested conditions. These results indicated both environmental conditions and media characteristics played important roles in controlling GO fate and transport in porous media. The one-site kinetic deposition model was applied to describe the interactions between the GO and limestone media and model simulations fitted the observed experimental data very well. As limestone is an important component of aquiferous media in subsurface, findings from this study elucidated the key factors and processes controlling the fate of GO particles in limestone media, which can inform the prediction and assessment of the risks of GO in groundwater environment.
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Affiliation(s)
- Shunan Dong
- Key Laboratory of Surficial Geochemistry, Ministry of Education, School of Earth Sciences and Engineering, Nanjing University, Nanjing, 210023, China
| | - Yuanyuan Sun
- Key Laboratory of Surficial Geochemistry, Ministry of Education, School of Earth Sciences and Engineering, Nanjing University, Nanjing, 210023, China
| | - Bin Gao
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL, 32611, USA
| | - Xiaoqing Shi
- Key Laboratory of Surficial Geochemistry, Ministry of Education, School of Earth Sciences and Engineering, Nanjing University, Nanjing, 210023, China.
| | - Hongxia Xu
- Key Laboratory of Surficial Geochemistry, Ministry of Education, School of Earth Sciences and Engineering, Nanjing University, Nanjing, 210023, China
| | - Jianfeng Wu
- Key Laboratory of Surficial Geochemistry, Ministry of Education, School of Earth Sciences and Engineering, Nanjing University, Nanjing, 210023, China
| | - Jichun Wu
- Key Laboratory of Surficial Geochemistry, Ministry of Education, School of Earth Sciences and Engineering, Nanjing University, Nanjing, 210023, China.
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