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Nusair A, Alkhateb H, D'Alessio M. Synthesis, characterization, and environmental applications of graphene-coated sand: A review. Sci Total Environ 2024; 917:170107. [PMID: 38232845 DOI: 10.1016/j.scitotenv.2024.170107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 12/30/2023] [Accepted: 01/09/2024] [Indexed: 01/19/2024]
Abstract
Global water quality has deteriorated, leaving over 844 million individuals without access to clean drinking water. While sand filters (SF) offer a solution, their limited surface area and adsorption capacity for emerging contaminants remain a challenge. This has prompted the development of new materials such as graphene-coated sand (GCS) to enhance the sand's adsorptive properties. Notably, GCS also possesses inherent anti-bacterial properties and can function as a photocatalyst when exposed to UV and visible light, offering enhanced water purification. This manuscript 1) reviews the synthesis of GCS, detailing the characterization techniques employed to understand its structure, composition, and multifunctional properties and 2) highlights the superior efficacy of GCS in removing contaminants, including metals (>95 % removal of Cd2+, Pb2+, Zn2+, and Cu2+ in low pH environment), sulfides (full removal compared to 26 % removal by raw sand), antibiotics (98 % removal of tetracycline), and bacteria (complete cell membrane destruction), compared to traditional SF. Due to its enhanced performance and multifaceted purification capabilities, GCS presents a promising alternative to SFs, especially in developing countries, aiming to improve water quality and ensure safe drinking water access. To the best of our knowledge, no other work groups the available research on GCS. Furthermore, future research directions should focus on reducing the overall production cost of GCS, exploring surface modification techniques, and expanding the range of contaminants tested by GCS, to fully realize its potential in water purification.
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Affiliation(s)
- Abdulla Nusair
- Department of Civil Engineering, University of Mississippi, Carrier Hall, University, MS 38677, USA
| | - Hunain Alkhateb
- Department of Civil Engineering, University of Mississippi, Carrier Hall, University, MS 38677, USA
| | - Matteo D'Alessio
- Department of Civil Engineering, University of Mississippi, Carrier Hall, University, MS 38677, USA.
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Syngouna VI, Georgopoulou MP, Bellou MI, Vantarakis A. Effect of Human Adenovirus Type 35 Concentration on Its Inactivation and Sorption on Titanium Dioxide Nanoparticles. Food Environ Virol 2024:10.1007/s12560-023-09582-z. [PMID: 38308001 DOI: 10.1007/s12560-023-09582-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 12/30/2023] [Indexed: 02/04/2024]
Abstract
Removal of pathogenic viruses from water resources is critically important for sanitation and public health. Nanotechnology is a promising technology for virus inactivation. In this paper, the effects of titanium dioxide (TiO2) anatase nanoparticles (NPs) on human adenovirus type 35 (HAdV-35) removal under static and dynamic (with agitation) batch conditions were comprehensively studied. Batch experiments were performed at room temperature (25 °C) with and without ambient light using three different initial virus concentrations. The virus inactivation experimental data were satisfactorily fitted with a pseudo-first-order expression with a time-dependent rate coefficient. The experimental results demonstrated that HAdV-35 sorption onto TiO2 NPs was favored with agitation under both ambient light and dark conditions. However, no distinct relationships between virus initial concentration and removal efficiency could be established from the experimental data.
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Affiliation(s)
- Vasiliki I Syngouna
- Environmental Microbiology Unit, Department of Public Health, Medical School, University of Patras, 26504, Patras, Greece.
| | | | - Maria I Bellou
- Environmental Microbiology Unit, Department of Public Health, Medical School, University of Patras, 26504, Patras, Greece
| | - Apostolos Vantarakis
- Environmental Microbiology Unit, Department of Public Health, Medical School, University of Patras, 26504, Patras, Greece
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Xia P, Zhang W, Jin Q, Si J, Guo F, Li Z, Bai Y. Influence of fulvic acid sub-fractions on aggregation kinetics of graphene oxide in aqueous environments. Sci Total Environ 2023; 860:160318. [PMID: 36414062 DOI: 10.1016/j.scitotenv.2022.160318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 11/03/2022] [Accepted: 11/16/2022] [Indexed: 06/16/2023]
Abstract
Fulvic acid (FA) can affect the dispersion of graphene oxide (GO) in aquatic environments, however, the possible mechanisms remain unclear. Dynamic light scattering techniques combined with a multiple regression model were applied to explore the influence of FA sub-fractions (FApH3 - FApH13) on the aggregation kinetics of GO in aqueous environments. The ratios of critical coagulation concentration (CCC) values were CCCNa: CCCMg: CCCLa: CCCCe = 1:2-5.15:3-7.31:3-7.35, which were consistent with the Derjaguin-Landau-Verwey-Overbeek (DLVO) theory and Schulze-Hardy rules. The GO remained stable at pH 3-10 and aggregated at pH < 3 or pH > 10, and its critical coagulation pH values were 1.44 and 12.25 with 10 mM NaCl as background. The CCC values of GO in the presence of FApH3 - FApH13 were greater than those in the absence of FA sub-fractions. The ratios of CCC values of GO (r) increased in the presence of FA sub-fractions in the order of FApH13 > FApH9 > FApH7 > FApH5 > FApH3 and ranged from 1.01 to 2.15 for certain metal ions including Na+, Mg2+, La3+, and Ce3+. The CCC values of GO were significantly related to C, H, O, N, S, H/C, O/C, carboxylic C, and carbonyl C of FA sub-fractions (P < 0.05), respectively, and could be predicted using the multiple linear regression eq. CCC = Z-n (98.959- 60.911 ∗ O/C + 4.799 ∗ O-alkyl C - 0.845 ∗ aromatic C - 6.237 ∗ carbonyl C). The predicted CCC values for GO were within 90 % prediction intervals, and the average error of the CCC values was 3.3 % and R2 = 0.986. This investigation is expected to provide a scientific basis for the transport and ecotoxicity of GO in environments.
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Affiliation(s)
- Peng Xia
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; School of Environmental and Safety Engineering, Changzhou University, Changzhou 213164, China
| | - Weibo Zhang
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resources & Environment, Nanchang University, Nanchang 330031, China
| | - Qi Jin
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Jingyi Si
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Fei Guo
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Zhongyu Li
- School of Environmental and Safety Engineering, Changzhou University, Changzhou 213164, China
| | - Yingchen Bai
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; School of Environmental and Safety Engineering, Changzhou University, Changzhou 213164, China.
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Mbanga O, Cukrowska E, Gulumian M. Dissolution of titanium dioxide nanoparticles in synthetic biological and environmental media to predict their biodurability and persistence. Toxicol In Vitro 2022; 84:105457. [PMID: 35987448 DOI: 10.1016/j.tiv.2022.105457] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 08/11/2022] [Accepted: 08/13/2022] [Indexed: 11/30/2022]
Abstract
Investigating the biodurability and persistence of titanium dioxide nanoparticles (TiO2 NPs) is of paramount importance because these parameters influence the particles' impact on human health and the environment. Contrary to most research conducted so far, the present study elucidates the dissolution kinetics, namely the dissolution rates, rate constants, order of reaction and half-times of TiO2 NPs in five different simulated biological fluids and two synthetic environmental media to predict their behaviour in real life situations. Results have shown that the dissolution of TiO2 NPs in all simulated fluids was limited. Of all the simulated biological media tested, acidic media such as phagolysosomal and gastric fluid produced the highest dissolution of TiO2 NPs compared to alkaline media such as blood plasma, Gamble's fluid, and intestinal fluid. Furthermore, when the particles were exposed to simulated environmental conditions, the dissolution was higher in high ionic strength seawater compared to freshwater. The dissolution kinetics of titanium dioxide nanoparticles followed first order reaction kinetics and were generally characterized by low dissolution rates and long half-times. These findings indicate that TiO2 NPs are very insoluble and will remain unchanged in the body and environment over long periods of time. Therefore, these particles are most likely to cause both short and long-term health effects and will remain persistent following release into the environment.
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Affiliation(s)
- Odwa Mbanga
- Molecular Sciences Institute, School of Chemistry, University of Witwatersrand, Private Bag X3, Johannesburg 2050, South Africa; Toxicology and Biochemistry Department, National Institute for Occupational Health, A Division of National Health Laboratories, Johannesburg, South Africa.
| | - Ewa Cukrowska
- Molecular Sciences Institute, School of Chemistry, University of Witwatersrand, Private Bag X3, Johannesburg 2050, South Africa.
| | - Mary Gulumian
- Toxicology and Biochemistry Department, National Institute for Occupational Health, A Division of National Health Laboratories, Johannesburg, South Africa; Water Research Group, Unit for Environmental Sciences and Management, Northwest University, Private Bag X6001, Potchefstroom 2520, South Africa.
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Adam J, Del Sorbo MR, Kaur J, Romano R, Singh M, Valadan M, Altucci C. Surface Interactions Studies of Novel Two-Dimensional Molybdenum Disulfide with Gram-Negative and Gram-Positive Bacteria. ANAL LETT 2022. [DOI: 10.1080/00032719.2022.2070186] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- Jaber Adam
- Laboratory of Bio-Nano-Photonics, Department of Physics “Ettore Pancini”, University of Naples “Federico II”, Naples, Italy
| | | | - Jasneet Kaur
- Laboratory of Bio-Nano-Photonics, Department of Physics “Ettore Pancini”, University of Naples “Federico II”, Naples, Italy
| | - Rocco Romano
- Department of Pharmacy, University of Salerno, Fisciano, Italy
| | - Manjot Singh
- Laboratory of Bio-Nano-Photonics, Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy
| | - Mohammadhassan Valadan
- Laboratory of Bio-Nano-Photonics, Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy
- Istituto Nazionale di Fisica Nucleare, Naples, Italy
| | - Carlo Altucci
- Laboratory of Bio-Nano-Photonics, Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy
- Istituto Nazionale di Fisica Nucleare, Naples, Italy
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