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Wu S, Luo H, Li S, Zheng Z, Long Q, Wei C, Rong H. Polydopamine/chitosan hydrogels-functionalized polyurethane foams in situ decorated with silver nanoparticles for water disinfection. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 366:121858. [PMID: 39018838 DOI: 10.1016/j.jenvman.2024.121858] [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: 02/26/2024] [Revised: 07/01/2024] [Accepted: 07/12/2024] [Indexed: 07/19/2024]
Abstract
A new facile route to decorate polyurethane foams (PUF) with dense and uniform silver nanoparticles (AgNPs) to ensure efficient and long-term water disinfection is proposed. The antibacterial sponge was fabricated by sequential treatment with chitosan hydrogels grafting, polydopamine (PDA) coating, and finally in situ growth of AgNPs on the surface of substrate. The morphologies, chemical composition, crystalline nature, mechanical property, and swelling capacity of the composite were characterized. Its silver release behavior and bactericidal performances against Escherichia coli (E. coli) were evaluated. Results show that the composite demonstrated higher mechanical strength (compression strength, 51.34 kPa) and a rapid swelling rate with an equilibrium swelling ratio of 18.2 g/g. It possessed a higher loading amount of AgNPs (35.87 mg/g) than that of PUF@Ag (8.21 mg/g) and restricted the cumulative silver release of below 0.05% after 24-h immersion in water. Besides, it presented efficient bactericidal activity with complete reduction of E. coli with 10 min of contact time. The strong bactericidal action was probably governed by strengthening the contact between AgNPs immobilized on the substrate and bacteria cells. Furthermore, the composite demonstrated exceptional reusability for five cycles and exhibited a superior processing capacity in the flow test. Finally, the composite could effectively disinfect the natural water sample like a river in 30 min under real conditions.
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Affiliation(s)
- Shuhan Wu
- School of Civil Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Huayong Luo
- School of Civil Engineering, Guangzhou University, Guangzhou, 510006, China.
| | - Shiyin Li
- School of Civil Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Zexin Zheng
- School of Civil Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Qingwu Long
- College of Light Chemical Industry and Materials Engineering, Shunde Polytechnic, Foshan, 528333, China
| | - Chunhai Wei
- School of Civil Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Hongwei Rong
- School of Civil Engineering, Guangzhou University, Guangzhou, 510006, China
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2
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Xu P, Jiang S. nFeS Embedded into Cryogels for High-Efficiency Removal of Cr(VI): From Mechanism to for Treatment of Industrial Wastewater. Gels 2024; 10:56. [PMID: 38247778 PMCID: PMC10815210 DOI: 10.3390/gels10010056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 01/04/2024] [Accepted: 01/08/2024] [Indexed: 01/23/2024] Open
Abstract
Most studies have focused on complex strategies for materials preparation instead of industrial wastewater treatment due to emergency treatment requirements for metal pollution. This study evaluated sodium polyacrylate (PSA) as a carbon skeleton and FeS as a functional material to synthesize PSA-nFeS material. The characteristics and interactions of PSA-nFeS composites treated with hexavalent chromium were analyzed by means of various techniques, such as scanning electron microscopy-energy dispersive X-ray spectrometry (SEM-EDS), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectrometry (FTIR), and atomic absorption spectroscopy (AAS). Adsorption-coupled reduction was observed to be the predominant mechanism of Cr(VI) removal. The feasibility of PSA-nFeS composites in reducing toxicity and removing of Cr(VI) from real effluents was investigated through column studies and material properties evaluation. The continuous column studies were conducted using tannery effluents to optimize feed flow rates, initial feed Cr(VI) concentration, and column bed height. The results revealed that PSA-nFeS composites are ideal for filling materials in portable filtration devices due to their lightweight and compact size.
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Affiliation(s)
- Peng Xu
- School of Environment, South China Normal University, Guangzhou 510006, China;
| | - Shaojun Jiang
- Institute of Agricultural Resources and Environment, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
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Demir D, Goksen G, Ceylan S, Trif M, Rusu AV. Optimized Peppermint Essential Oil Microcapsules Loaded into Gelatin-Based Cryogels with Enhanced Antimicrobial Activity. Polymers (Basel) 2023; 15:2782. [PMID: 37447427 DOI: 10.3390/polym15132782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 06/18/2023] [Accepted: 06/20/2023] [Indexed: 07/15/2023] Open
Abstract
In this study, chitosan (Chi) was used to microencapsulate peppermint essential oil (PEO). A novel gelatin-based cryogel loaded with PEO microcapsules was further developed and characterized for potential applications. Four different cryogel systems were designed, and the morphological, molecular, physical and antibacterial properties were investigated. Additionally, the antimicrobial properties of PEO, alone and microcapsulated, incorporated into the cryogel network were evaluated. The observed gel structure of cryogels exhibited a highly porous morphology in the microcapsules. The highest values of the equilibrium swelling ratio were acquired for the GelCryo-ChiCap and GelCryo-PEO@ChiCap samples. The contact angle GelCryo-PEO@ChiCap sample was lower than the control (GelCryo) due to the water repelling of the essential oil. It has been found that the incorporation of encapsulated PEO into the cryogels would be more advantageous compared to its direct addition. Moreover, GelCryo-PEO@ChiCap cryogels showed the strongest antibacterial activities, especially against Staphylococcus aureus (Gram-positive bacteria) and Escherichia coli (Gram-negative bacteria). The system that was developed showed promising results, indicating an improved antibacterial efficacy and enhanced structural properties due to the presence of microcapsules. These findings suggest that the system may be an appropriate candidate for various applications, including, but not limited to, drug release, tissue engineering, and food packaging. Finally, this system demonstrates a strategy to stabilize the releasing of the volatile compounds for creating successful results.
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Affiliation(s)
- Didem Demir
- Department of Chemistry and Chemical Process Technologies, Vocational School of Technical Sciences at Mersin Tarsus Organized Industrial Zone, Tarsus University, Mersin 33100, Türkiye
| | - Gulden Goksen
- Department of Food Technology, Vocational School of Technical Sciences at Mersin Tarsus Organized Industrial Zone, Tarsus University, Mersin 33100, Türkiye
| | - Seda Ceylan
- Department of Bioengineering, Faculty of Engineering, Adana Alparslan Turkes Science and Technology University, Adana 01250, Türkiye
| | - Monica Trif
- Centre for Innovative Process Engineering (CENTIV) GmbH, 28857 Syke, Germany
| | - Alexandru Vasile Rusu
- CENCIRA Agrofood Research and Innovation Centre, Ion Meșter 6, 400650 Cluj-Napoca, Romania
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Zyoud A, Zyoud AH, Zyoud SH, Nassar H, Zyoud SH, Qamhieh N, Hajamohideen A, Hilal HS. Photocatalytic degradation of aqueous methylene blue using ca-alginate supported ZnO nanoparticles: point of zero charge role in adsorption and photodegradation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:68435-68449. [PMID: 37126167 DOI: 10.1007/s11356-023-27318-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 04/26/2023] [Indexed: 05/27/2023]
Abstract
A novel insoluble Ca-Alginate created from soluble Na-Alginate was used as a support substrate for ZnO nanoparticles producing ZnO@Ca-Alginate composite photocatalyst. Fourier Transform Infrared (FT-IR), Ultraviolet-Visible (UV-Vis), Thermogravimetric Analysis (TGA), Scanning Electron Microscopy (SEM), Energy-Dispersive X-ray Spectroscopy (EDX), and X-ray Diffraction (XRD) analysis techniques were used in the characterization of the prepared ZnO@Ca-Alginate. The ZnO@Ca-Alginate was tested for its potential use in the photodegradation of Methylene Blue (MB) from an aqueous solution under solar-simulated light. This composite photocatalyst efficiency in MB removal was compared with naked ZnO potential considering different conditions and parameters (e.g. pH, MB concentration, amount of photocatalyst, and irradiation time). The MB concentrations were identified using UV-vis spectrophotometric methods. While, high-performance liquid chromatography (HPLC), Total organic carbon (TOC) analysis, and other elemental analyses were used to confirm the MB complete mineralization. The MB photodegradation results were performed by using UV-vis analysis., the results showed that up to 95% of MB (40 mL, 40 ppm) was removed within 30 min of irradiation using either ZnO@Ca-Alginate or naked ZnO. The pH and the zero-charge point (Pzc) values play a main role in the adsorption and photodegradation results. The Pzc values for Ca-Alginate, ZnO, and Zn@Ca-Alginate were 6.5, 8.8, and 6.8 respectively. The prepared composite catalyst showed a maximum adsorption and photodegradation in a basic to slightly basic medium, the MB completely removed at pH of 7.7 within an hour of irradiation. The complete miniralzation of MB at the end of the photodegrdation process was confirmed. Here it is proved that the ZnO@Ca-Alginate photocatalyst can be recovered and reused without any significant decrease in its effectiveness.
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Affiliation(s)
- Ahlam Zyoud
- SSERL, Chemistry Department, An-Najah National University, Nablus, Palestine
| | - Ahed H Zyoud
- SSERL, Chemistry Department, An-Najah National University, Nablus, Palestine.
| | - Shaher H Zyoud
- Department of Building Engineering and Environment, Palestine Technical University (Kadoorie), Tulkarm, Palestine
| | - Hiba Nassar
- SSERL, Chemistry Department, An-Najah National University, Nablus, Palestine
| | - Samer H Zyoud
- Department of Mathematics and Sciences, Ajman University, Ajman, P.O. Box 346, United Arab Emirates
| | - Naser Qamhieh
- Department of Physics, United Arab Emirates University, Al-Ain, United Arab Emirates
| | | | - Hikmat S Hilal
- SSERL, Chemistry Department, An-Najah National University, Nablus, Palestine
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Xie X, Zhang M, Li Y, Lei Y, Sun J, Sattorov N, Makhmudov KB, Wang J. NIR as a "trigger switch" for situ distinguish superbacteria and photothermal synergistic antibacterial treatment with Ag 2O particles/lignosulfonate/cationic guar gum hybrid hydrogel. Int J Biol Macromol 2023; 232:123340. [PMID: 36682659 DOI: 10.1016/j.ijbiomac.2023.123340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 01/02/2023] [Accepted: 01/15/2023] [Indexed: 01/21/2023]
Abstract
The in situ identification of superbugs with the simultaneous killing of it is key to preventing human health. Here, a one-stop identification and killing platform for near-infrared (NIR) triggering was designed and constructed using lignosulfonate (LS), cationic guar gum (CG) and Ag2O NPs hydrogels (LS/CG/Ag2O). The hydrogel network is used as a fixed matrix for Ag2O NPs and a nano reactor, meanwhile 3,3', 5,5'-tetramethylbenzidine (TMB) as a single probe sensor array for bacterial identification. In contrast to conventional methods, hybrid hydrogels have catalytic qualities through which TMB be catalyzed to generate oxidized TMB (oxTMB). The drug resistance of the same strain can be distinguished based on the different inhibition abilities of drug-resistant superbacteria in TMB and hydrogel reactions. Then, the employing of oxTMB photothermal characteristics, it can be efficiently killed in real time while being driven by a near-infrared laser. The proposed one-stop hydrogel platform paves a way for the rapid identification and killing of drug-resistant superbacteria.
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Affiliation(s)
- Xianghong Xie
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Mingyu Zhang
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Ying Li
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Yulu Lei
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Jing Sun
- Qinghai Provincial Key Laboratory of Qinghai-Tibet Plateau Biological Resources, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810008, Qinghai, China
| | - Nosirjon Sattorov
- Institute of Problems of Biological Safety and Biotechnology, Tajik Academy of Agricultural Sciences, Dushanbe, Tajikistan
| | | | - Jianlong Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China.
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Xu M, Luo H, Rong H, Wu S, Zheng Z, Chen B. Calcium alginate gels-functionalized polyurethane foam decorated with silver nanoparticles as an antibacterial agent for point-of-use water disinfection. Int J Biol Macromol 2023; 231:123289. [PMID: 36657545 DOI: 10.1016/j.ijbiomac.2023.123289] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 01/03/2023] [Accepted: 01/12/2023] [Indexed: 01/17/2023]
Abstract
This paper reports the preparation of calcium alginate gels-functionalized PUF decorated with AgNPs (CA/PUF@Ag) by in situ reduction of Ag+ ions to form AgNPs with weakly reducing glycerol in CA/PUF composite. The water-adsorbing capacity, chemical structure, crystalline nature, elemental composition and morphologies of the composite were characterized. The Ag release behavior of CA/PUF@Ag was investigated. The inhibition zone test, time-dependent co-culture assay, test tube test, and antibacterial filtration experiment with Escherichia coli as an indicator of bacterial contamination were conducted to explore the antimicrobial efficacy. Results indicated that the CA/PUF@Ag prepared at 0.25 % w/v of SA could absorb more water with a higher swelling ratio of 8.0 g/g than that of PUF@Ag (6.0 g/g), which was subsequently squeezed by minimal pressure stimuli. The CA/PUF@Ag had a larger initial AgNPs loading amount (8.48 mg/g), lower Ag release concentration (44.35 μg/L) and lower Ag release rate (0.27 %) after 14 days tests than those of PUF@Ag (7.93 mg/g, 80.87 μg/L and 0.60 % respectively). The CA/PUF@Ag was highly reusable because bacterial cells in the squeezed water recovered from the composite were completely inactivated over five cycles of operation, and exhibited good antibacterial efficacy as an antibacterial filter in a flow test.
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Affiliation(s)
- Mingqi Xu
- School of Civil Engineering, Guangzhou University, Guangzhou 510006, China
| | - Huayong Luo
- School of Civil Engineering, Guangzhou University, Guangzhou 510006, China.
| | - Hongwei Rong
- School of Civil Engineering, Guangzhou University, Guangzhou 510006, China
| | - Shuhan Wu
- School of Civil Engineering, Guangzhou University, Guangzhou 510006, China
| | - Zexin Zheng
- School of Civil Engineering, Guangzhou University, Guangzhou 510006, China
| | - Boyuan Chen
- School of Civil Engineering, Guangzhou University, Guangzhou 510006, China
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7
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Kumar A, Sharma J, Srivastava P, Nebhani L. Mechanically robust and highly bactericidal macroporous polymeric gels based on quaternized N, N-(dimethylamino)ethyl methacrylate possessing varying alkyl chain lengths. J Mater Chem B 2023; 11:2234-2248. [PMID: 36794579 DOI: 10.1039/d2tb02178a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
In this paper, macroporous antimicrobial polymeric gels (MAPGs) functionalized with active quaternary ammonium cations attached to varying hydrocarbon chain lengths have been fabricated. Apart from the change in the alkyl chain length attached to the quaternary ammonium cation, the amount of crosslinker was also varied during the fabrication of the macroporous gels. The prepared gels were characterized using Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, field emission scanning electron microscopy (FE-SEM) and swelling studies. In addition, the mechanical properties of the fabricated macroporous gels were studied using compression and tensile testing. The antimicrobial activity of the gels has been determined for Gram-negative bacteria (Escherichia coli, Pseudomonas aeruginosa) as well as Gram-positive bacteria (Bacillus subtilis, Staphylococcus aureus). Antimicrobial activity, as well as the mechanical properties of the macroporous gels, was found to be influenced by the alkyl chain length attached to the quaternary ammonium cations as well as by the amount of crosslinker used for the fabrication of the gel. In addition, on increasing the alkyl chain length from C4 (butyl) to C8 (octyl), the effectiveness of the polymeric gels increased. It was observed that the gels derived using a tertiary amine (NMe2) containing monomer showed relatively low antimicrobial activity as compared to the gels obtained using quaternized monomers (C4 (butyl), C6 (hexyl), and C8 (octyl)). The gels based on the quaternized C8 monomer displayed the highest antimicrobial activity and mechanical stability as compared to the gels based on the C4 and C6 monomers.
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Affiliation(s)
- Amit Kumar
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi-110016, India.
| | - Jyoti Sharma
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, Hauz Khas, New Delhi-110016, India.
| | - Preeti Srivastava
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, Hauz Khas, New Delhi-110016, India.
| | - Leena Nebhani
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi-110016, India.
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8
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Schito AM, Caviglia D, Piatti G, Alfei S. A Highly Efficient Polystyrene-Based Cationic Resin to Reduce Bacterial Contaminations in Water. Polymers (Basel) 2022; 14:polym14214690. [PMID: 36365682 PMCID: PMC9654381 DOI: 10.3390/polym14214690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 10/29/2022] [Accepted: 10/31/2022] [Indexed: 11/06/2022] Open
Abstract
Nowadays, new water disinfection materials attract a lot of attention for their cost-saving and ease of application. Nevertheless, the poor durability of the matrices and the loss of physically incorporated or chemically attached antibacterial agents that can occur during water purification processes considerably limit their prolonged use. In this study, a polystyrene-based cationic resin (R4) with intrinsic broad-spectrum antibacterial effects was produced without needing to be enriched with additional antibacterial agents that could detach during use. Particularly, R4 was achieved by copolymerizing 4-ammonium-butyl-styrene (4-ABSTY) with N,N-dimethylacrylamide (DMAA) and using N-(2-acryloylamino-ethyl)-acrylamide (AAEA) as a cross-linker. The R4 obtained showed a spherical morphology, micro-dimensioned particles, high hydrophilicity, high-level porosity, and excellent swelling capabilities. Additionally, the swollen R4 to its maximum swelling capability, when dried with gentle heating for 3 h, released water following the Higuchi’s kinetics, thus returning to the original structure. In time–kill experiments on the clinical isolates of multidrug-resistant (MDR) pathogens of fecal origin, such as enterococci, Group B Salmonella species, and Escherichia coli, R4 showed rapid bactericidal effects on enterococci and Salmonella, and reduced E. coli viable cells by 99.8% after 4 h. When aqueous samples artificially infected by a mixture of the same bacteria of fecal origin were exposed for different times to R4 in a column, simulating a water purification system, 4 h of contact was sufficient for R4 to show the best bacterial killing efficiency of 99%. Overall, thanks to its physicochemical properties, killing efficiency, low costs of production, and scalability, R4 could become a cost-effective material for building systems to effectively reduce bacterial, even polymicrobial, water contamination.
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Affiliation(s)
- Anna Maria Schito
- Department of Surgical Sciences and Integrated Diagnostics (DISC), University of Genoa, Viale Benedetto XV, 6, 16132 Genova, Italy
- Correspondence: (A.M.S.); (S.A.); Tel.: +39-010-355-2296 (S.A.)
| | - Debora Caviglia
- Department of Surgical Sciences and Integrated Diagnostics (DISC), University of Genoa, Viale Benedetto XV, 6, 16132 Genova, Italy
| | - Gabriella Piatti
- Department of Surgical Sciences and Integrated Diagnostics (DISC), University of Genoa, Viale Benedetto XV, 6, 16132 Genova, Italy
| | - Silvana Alfei
- Department of Pharmacy, University of Genoa, Viale Cembrano, 16148 Genoa, Italy
- Correspondence: (A.M.S.); (S.A.); Tel.: +39-010-355-2296 (S.A.)
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Xu Y, Hu J, Zhang X, Yuan D, Duan G, Li Y. Robust and multifunctional natural polyphenolic composites for water remediation. MATERIALS HORIZONS 2022; 9:2496-2517. [PMID: 35920729 DOI: 10.1039/d2mh00768a] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
The scarcity of clean water has become a global environmental problem which constrains the development of public health, economy, and sustainability. In recent years, natural polyphenols have drawn increasing interests as promising platforms towards diverse water remediation composites and devices, owing to their abundant and renewable resource in nature, highly active surface chemistry, and multifunctionality. This review aims to summarize the most recent advances and highlights of natural polyphenol-based composite materials (e.g., nanofibers, membranes, particles, and hydrogels) for water remediation, by focusing on their structural and functional features, as well as their diversified applications including membrane filtration, solar distillation, adsorption, advanced oxidation processes, and disinfection. Finally, the future challenges in this field are also prospected. It is anticipated that this review will provide new opportunities towards the future development of natural polyphenols and other kinds of naturally occurring molecules in water purification applications.
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Affiliation(s)
- Yuanting Xu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China.
| | - Junfei Hu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China.
| | - Xueqian Zhang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China.
| | - Dandan Yuan
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China.
| | - Gaigai Duan
- Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Yiwen Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China.
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Khan SA, Jain M, Pandey A, Pant KK, Ziora ZM, Blaskovich MAT, Shetti NP, Aminabhavi TM. Leveraging the potential of silver nanoparticles-based materials towards sustainable water treatment. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 319:115675. [PMID: 35834856 DOI: 10.1016/j.jenvman.2022.115675] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 06/29/2022] [Accepted: 07/02/2022] [Indexed: 06/15/2023]
Abstract
Increasing demand of pure and accessible water and improper disposal of waste into the existing water resources are the major challenges for sustainable development. Nanoscale technology is an effective approach that is increasingly being applied to water remediation. Compared to conventional water treatment processes, silver nanotechnology has been demonstrated to have advantages due to its anti-microbial and oligodynamic (biocidal) properties. This review is focused on environmentally friendly green syntheses of silver nanoparticles (AgNPs) and their applications for the disinfection and microbial control of wastewater. A bibliometric keyword analysis is conducted to unveil important keywords and topics in the utilisation of AgNPs for water treatment applications. The effectiveness of AgNPs, as both free nanoparticles (NPs) or as supported NPs (nanocomposites), to deal with noxious pollutants like complex dyes, heavy metals as well as emerging pollutants of concern is also discussed. This knowledge dataset will be helpful for researchers to identify and utilise the distinctive features of AgNPs and will hopefully stimulate the development of novel solutions to improve wastewater treatment. This review will also help researchers to prepare effective water management strategies using nano silver-based systems manufactured using green chemistry.
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Affiliation(s)
- Sadaf Aiman Khan
- The University of Queensland - Indian Institute of Technology Delhi Academy of Research (UQIDAR), India; Department of Chemical Engineering, Indian Institute of Technology (IIT) Delhi, New Delhi, India; Centre for Superbug Solutions, Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Marut Jain
- The University of Queensland - Indian Institute of Technology Delhi Academy of Research (UQIDAR), India; Department of Chemical Engineering, Indian Institute of Technology (IIT) Delhi, New Delhi, India; Centre for Superbug Solutions, Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Ashish Pandey
- Department of Chemical Engineering, Indian Institute of Technology (IIT) Delhi, New Delhi, India
| | - Kamal Kishore Pant
- The University of Queensland - Indian Institute of Technology Delhi Academy of Research (UQIDAR), India; Department of Chemical Engineering, Indian Institute of Technology (IIT) Delhi, New Delhi, India.
| | - Zyta Maria Ziora
- The University of Queensland - Indian Institute of Technology Delhi Academy of Research (UQIDAR), India; Centre for Superbug Solutions, Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Mark A T Blaskovich
- The University of Queensland - Indian Institute of Technology Delhi Academy of Research (UQIDAR), India; Centre for Superbug Solutions, Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Nagaraj P Shetti
- School of Advanced Sciences, KLE Technological University, Hubballi, Karnataka, India
| | - Tejraj M Aminabhavi
- School of Advanced Sciences, KLE Technological University, Hubballi, Karnataka, India; School of Engineering, University of Petroleum and Energy Studies, Dehradun, 248007, India.
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11
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Hu ZT, Chen Y, Fei YF, Loo SL, Chen G, Hu M, Song Y, Zhao J, Zhang Y, Wang J. An overview of nanomaterial-based novel disinfection technologies for harmful microorganisms: Mechanism, synthesis, devices and application. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 837:155720. [PMID: 35525366 DOI: 10.1016/j.scitotenv.2022.155720] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 05/01/2022] [Accepted: 05/01/2022] [Indexed: 06/14/2023]
Abstract
Harmful microorganism (e.g., new coronavirus) based infection is the most important security concern in life sciences and healthcare. This article aims to provide a state-of-the-art review on the development of advanced technology based on nanomaterial disinfection/sterilization techniques (NDST) for the first time including the nanomaterial types, disinfection techniques, bactericidal devices, sterilization products, and application scenarios (i.e., water, air, medical healthcare), with particular brief account of bactericidal behaviors referring to varied systems. In this emerging research area spanning the years from 1998 to 2021, total of ~200 publications selected for the type of review paper and research articles were reviewed. Four typical functional materials (namely type of metal/metal oxides, S-based, C-based, and N-based) with their development progresses in disinfection/sterilization are summarized with a list of synthesis and design. Among them, the widely used silver nanoparticles (AgNPs) are considered as the most effective bacterial agents in the type of nanomaterials at present and has been reported for inactivation of viruses, fungi, protozoa. Some methodologies against (1) disinfection by-products (DBPs) in traditional sterilization, (2) noble metal nanoparticles (NPs) agglomeration and release, (3) toxic metal leaching, (4) solar spectral response broadening, and (5) photogenerated e-/h+ pairs recombination are reviewed and discussed in this field, namely (1) alternative techniques and nanomaterials, (2) supporter anchoring effect, (3) nonmetal functional nanomaterials, (4) element doping, and (5) heterojunction constructing. The feasible strategies in the perspective of NDST are proposed to involve (1) non-noble metal disinfectors, (2) multi-functional nanomaterials, (3) multi-component nanocomposite innovation, and (4) hybrid techniques for disinfection/sterilization system. It is promising to achieve 100% bactericidal efficiency for 108 CFU/mL within a short time of less than 30 min.
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Affiliation(s)
- Zhong-Ting Hu
- College of Environment, Zhejiang University of Technology (ZJUT), Hangzhou 310014, China
| | - Yue Chen
- College of Environment, Zhejiang University of Technology (ZJUT), Hangzhou 310014, China
| | - Yan-Fei Fei
- College of Environment, Zhejiang University of Technology (ZJUT), Hangzhou 310014, China
| | - Siew-Leng Loo
- Smart Materials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genoa, Italy
| | - Guancong Chen
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Mian Hu
- College of Environment, Zhejiang University of Technology (ZJUT), Hangzhou 310014, China
| | - Yujie Song
- Engineering Laboratory of Advanced Energy Materials, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Jun Zhao
- Institute of Bioresource and Agriculture, Hong Kong Baptist University, Hong Kong Special Administrative Region.
| | - Yifeng Zhang
- Department of Environmental Engineering, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
| | - Jiade Wang
- College of Environment, Zhejiang University of Technology (ZJUT), Hangzhou 310014, China.
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12
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Highly performant nanocomposite cryogels for multicomponent oily wastewater filtration. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Dinu IA, Ghimici L, Raschip IE. Macroporous 3D Chitosan Cryogels for Fastac 10EC Pesticide Adsorption and Antibacterial Applications. Polymers (Basel) 2022; 14:polym14153145. [PMID: 35956660 PMCID: PMC9370839 DOI: 10.3390/polym14153145] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 07/28/2022] [Accepted: 07/29/2022] [Indexed: 02/01/2023] Open
Abstract
The pesticide pollution of surface water and wastewater has been recognized as a major worldwide concern due to their persistence in the aquatic environment and the potential adverse effects on human, flora, and fauna health. Apart from pesticides, bio-contamination with various bacterial populations leads to waterborne diseases. Hence, it becomes vital to remove the above-mentioned pollutants from water using a suitable process. Consequently, our study emphasized the potential benefits of a highly porous, chemically cross-linked 3D chitosan (CSGA) cryogel in the removal of pesticides and bacteria. The CSGA sponges were prepared using a facile and cost-effective approach that consisted of a three-step cryogenic process: (i) freezing at −18 °C, (ii) storage in a frozen state for a certain period, and (iii) thawing at room temperature. Batch adsorption experiments were performed under different environments, where the effects of several parameters, such as pH, contact time, and initial pollutant concentration were evaluated to identify the appropriate adsorption conditions for maximum pesticide removal. The CSGA-based cryogel sponges exhibited a theoretical maximum adsorption capacity of 160.82 mg g−1 for the Fastac 10EC pesticide and very good recyclability at room temperature. In addition, the antibacterial activities of these sponges were also investigated against various bacterial pathogens. The rates of killing Escherichia coli, Listeria monocytogenes, and Staphylococcus aureus were close to 82%, 100%, and 99%, respectively. These results demonstrated that CSGA cryogels could be efficiently used in water remediation and find applications in the removal of pesticides and disinfection.
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14
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Liu X, Zhang S, Zhang X, Guo H, Cao X, Lou Z, Zhang W, Wang C. A novel lignin hydrogel supported nZVI for efficient removal of Cr(VI). CHEMOSPHERE 2022; 301:134781. [PMID: 35513080 DOI: 10.1016/j.chemosphere.2022.134781] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Revised: 04/23/2022] [Accepted: 04/26/2022] [Indexed: 06/14/2023]
Abstract
A novel hydrogel-supported nanoscale zero-valent iron (nZVI) composite (nZVI@LH) was synthesized by ion exchange and in-situ reduction. The removal efficiency was tested, and the mechanism was also explored. The nZVI@LH at the precursor Fe(II) ion concentration of 0.1 mol/L presented an enhanced Cr(VI) removal capacity of 310.86 mg/g Fe0 at pH 5.3, which was 11.6 times more than that of the pure nZVI. The removal efficiency of the composite at pH 2.1 was more than double compared with alkaline or neutral conditions. Scanning electron microscopy (SEM) suggested that the nZVI particles were uniformly immobilized in the lignin hydrogel. Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) provided evidence supporting the removal mechanism. According to the XPS results, the high removal capacity of the composite was attributed to chemical reduction/precipitation (69.7%), surface sorption (19.7%), and swelling uptake (10.6%). The pseudo-first-order reduction kinetics and pseudo-second-order kinetic model were employed to simulate the kinetic data, which supported the mechanism that chemical reduction and surface sorption could simultaneously remove Cr(VI). The electron acceptor and electron donor affected the reaction rate, and the presence of humic acid significantly inhibited the reaction. The present study demonstrated that lignin hydrogel acted as a carrier to prevent aggregation of nZVI particles. nZVI particles loaded on lignin hydrogel showed high reactivity and high degree of utilization compared with bare-nZVI. These results exhibited the great potential of nZVI@LH in practical water treatment due to its high activity.
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Affiliation(s)
- Xiaoyan Liu
- College of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai, 200444, China
| | - Shenyu Zhang
- College of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai, 200444, China
| | - Xinying Zhang
- College of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai, 200444, China.
| | - Hao Guo
- College of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai, 200444, China
| | - Xinde Cao
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Ziyang Lou
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Wei Zhang
- School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Chuanhua Wang
- College of Life and Environmental Science, Wenzhou University, Wenzhou, Zhejiang, 325035, China
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15
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JAFAR NB, FADHIL ZH, MUSTAFA EM, SAADI AM. Investigation the inhibitory effects of AgNPs generated by Bifidobacterium spp. on bacteria isolated from ready-to-eat foods. FOOD SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1590/fst.88721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Rashki S, Shakour N, Yousefi Z, Rezaei M, Homayoonfal M, Khabazian E, Atyabi F, Aslanbeigi F, Safaei Lapavandani R, Mazaheri S, Hamblin MR, Mirzaei H. Cellulose-Based Nanofibril Composite Materials as a New Approach to Fight Bacterial Infections. Front Bioeng Biotechnol 2021; 9:732461. [PMID: 34858953 PMCID: PMC8631928 DOI: 10.3389/fbioe.2021.732461] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 09/20/2021] [Indexed: 01/05/2023] Open
Abstract
Antibiotic resistant microorganisms have become an enormous global challenge, and are predicted to cause hundreds of millions of deaths. Therefore, the search for novel/alternative antimicrobial agents is a grand global challenge. Cellulose is an abundant biopolymer with the advantages of low cost, biodegradability, and biocompatibility. With the recent growth of nanotechnology and nanomedicine, numerous researchers have investigated nanofibril cellulose to try to develop an anti-bacterial biomaterial. However, nanofibril cellulose has no inherent antibacterial activity, and therefore cannot be used on its own. To empower cellulose with anti-bacterial properties, new efficient nanomaterials have been designed based on cellulose-based nanofibrils as potential wound dressings, food packaging, and for other antibacterial applications. In this review we summarize reports concerning the therapeutic potential of cellulose-based nanofibrils against various bacterial infections.
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Affiliation(s)
- Somaye Rashki
- Department of Microbiology and Immunology, Faculty of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Neda Shakour
- Department of Medicinal Chemistry, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
- Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Zahra Yousefi
- School of Allied Medical Sciences, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Marzieh Rezaei
- Department of Medical Biotechnology and Nanotechnology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mina Homayoonfal
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran
| | - Ehsan Khabazian
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Fatemeh Atyabi
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
- Nanotechnology Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Fatemeh Aslanbeigi
- School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
- Student Research Committee, Kashan University of Medical Sciences, Kashan, Iran
| | | | - Samaneh Mazaheri
- Department of Analytical Chemistry, Faculty of Chemistry, University of Kashan, Kashan, Iran
| | - Michael R Hamblin
- Laser Research Centre, Faculty of Health Science, University of Johannesburg, Doornfontein, South Africa
| | - Hamed Mirzaei
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran
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17
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Highly Effective Covalently Crosslinked Composite Alginate Cryogels for Cationic Dye Removal. Gels 2021; 7:gels7040178. [PMID: 34698202 PMCID: PMC8544462 DOI: 10.3390/gels7040178] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 10/06/2021] [Accepted: 10/19/2021] [Indexed: 01/05/2023] Open
Abstract
Currently, macroporous hydrogels have been receiving attention in wastewater treatment due to their unique structures. As a natural polymer, alginate is used to remove cationic dyes due to its sustainable features such as abundance, low cost, processability, and being environmentally friendly. Herein, alginate/montmorillonite composite macroporous hydrogels (cryogels) with high porosity, mechanical elasticity, and high adsorption yield for methylene blue (MB) were generated by the one-step cryogelation technique. These cryogels were synthesized by adding montmorillonite into gel precursor, followed by chemical cross-linking employing carbodiimide chemistry in a frozen state. The as-prepared adsorbents were analyzed by FT-IR, SEM, gel fraction, swelling, uniaxial compression, and MB adsorption tests. The results indicated that alginate/montmorillonite cryogels exhibited high gelation yield (up to 80%), colossal water uptake capacity, elasticity, and effective dye adsorption capacity (93.7%). Maximum adsorption capacity against MB was 559.94 mg g-1 by linear regression of Langmuir model onto experimental data. The Pseudo-Second-Order model was fitted better onto kinetic data compared to the Pseudo-First-Order model. Improved porosity and mechanical elasticity yielding enhanced dye removal capacity make them highly potential alternative adsorbents compared to available alginate/montmorillonite materials for MB removal.
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18
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Loo SL, Vásquez L, Zahid M, Costantino F, Athanassiou A, Fragouli D. 3D Photothermal Cryogels for Solar-Driven Desalination. ACS APPLIED MATERIALS & INTERFACES 2021; 13:30542-30555. [PMID: 34156821 PMCID: PMC8289246 DOI: 10.1021/acsami.1c05087] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 06/09/2021] [Indexed: 05/27/2023]
Abstract
This paper reports the fabrication of photothermal cryogels for freshwater production via the solar-driven evaporation of seawater. Photothermal cryogels were prepared via in situ oxidative polymerization of pyrrole with ammonium persulfate on preformed poly(sodium acrylate) (PSA) cryogels. We found that the pyrrole concentration used in the fabrication process has a significant effect on the final PSA/PPy cryogels (PPCs), causing the as-formed polypyrrole (PPy) layer on the PPC to evolve from nanoparticles to lamellar sheets and to consolidated thin films. PPC fabricated using the lowest pyrrole concentration (i.e., PPC10) displays the best solar-evaporation efficiency compared to the other samples, which is further improved by switching the operative mode from floating to standing. Specifically, in the latter case, the apparent solar evaporation rate and solar-to-vapor conversion efficiency reach 1.41 kg m-2 h-1 and 96.9%, respectively, due to the contribution of evaporation from the exposed lateral surfaces. The distillate obtained from the condensed vapor, generated via solar evaporation of a synthetic seawater through PPC10, shows an at least 99.99% reduction of Na while all the other elements are reduced to a subppm level. We attribute the superior solar evaporation and desalination performance of PPC10 to its (i) higher photoabsorption efficiency, (ii) higher heat localization effect, (iii) open porous structure that facilitates vapor removal, (iv) rough pore surface that increases the surface area for light absorption and water evaporation, and (v) higher water-absorption capacity to ensure efficient water replenishment to the evaporative sites. It is anticipated that the gained know-how from this study would offer insightful guidelines to better designs of polymer-based 3D photothermal materials for solar evaporation as well as for other emerging solar-related applications.
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Affiliation(s)
- Siew-Leng Loo
- Smart
Materials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Lía Vásquez
- Smart
Materials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
- Dipartimento
di Chimica e Chimica Industriale (DCCI) Università degli Studi di Genova, Via Dodecaneso 31, 16146 Genova, Italy
| | - Muhammad Zahid
- Smart
Materials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Federica Costantino
- Smart
Materials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
- Interdisciplinary
Laboratories for Advanced Materials Physics (i-LAMP) and Dipartimento
di Matematica e Fisica, Università
Cattolica del Sacro Cuore, Via Musei 41, 25121 Brescia, Italy
| | | | - Despina Fragouli
- Smart
Materials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
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19
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Sun Y, Lei K, Lang M. Synthesis, structural characterization, antifouling and antibacterial properties of polypyridinium salt coated silica nanoparticles. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2021. [DOI: 10.1080/10601325.2021.1936549] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Yunlong Sun
- Research Institute of Chemical Metallurgy, Jiangxi Copper Technology Research Institute Co., LTD., Nanchang, Jiang Xi, China
| | - Kun Lei
- School of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, China
| | - Meidong Lang
- Shanghai Key Laboratory Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China
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20
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Zhang J, Wang G, Zhang J, Xu Z, Zhao Y, Wang Y, She F, Gray S, Kong L. Substrate-Independent, Regenerable Anti-Biofouling Coating for Polymeric Membranes. MEMBRANES 2021; 11:205. [PMID: 33805836 PMCID: PMC8000734 DOI: 10.3390/membranes11030205] [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: 02/16/2021] [Revised: 03/03/2021] [Accepted: 03/06/2021] [Indexed: 11/21/2022]
Abstract
Biofouling is a common but significant issue in the membrane process as it reduces permeate flux, increases energy costs, and shortens the life span of membranes. As an effective antibacterial agent, a small amount of silver nanoparticles (AgNPs) immobilized on membrane surfaces will alleviate the membrane from biofouling. However, loading AgNPs on the membrane surface remains a challenge due to the low loading efficiency or the lack of bonding stability between AgNPs and the membrane surface. In this study, a substrate-independent method is reported to immobilize silver nanoparticles on polymeric membrane surfaces by firstly modifying the membrane surface with functional groups and then forming silver nanoparticles in situ. The obtained membranes had good anti-biofouling properties as demonstrated from disk diffusion and anti-biofouling tests. The silver nanoparticles were stably immobilized on the membrane surfaces and easily regenerated. This method is applicable to various polymeric micro-, ultra-, nano-filtration and reverse osmosis (RO) membranes.
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Affiliation(s)
- Juan Zhang
- Institute for Frontier Materials, Deakin University, Geelong, VIC 3216, Australia; (G.W.); (Z.X.); (Y.W.); (F.S.)
| | - Guang Wang
- Institute for Frontier Materials, Deakin University, Geelong, VIC 3216, Australia; (G.W.); (Z.X.); (Y.W.); (F.S.)
| | - Jianhua Zhang
- Institute for Sustainable Industries and Liveable Cities, Victoria University, Melbourne, VIC 8001, Australia; (J.Z.); (S.G.)
| | - Zhiguang Xu
- Institute for Frontier Materials, Deakin University, Geelong, VIC 3216, Australia; (G.W.); (Z.X.); (Y.W.); (F.S.)
| | - Yan Zhao
- College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China;
| | - Yichao Wang
- Institute for Frontier Materials, Deakin University, Geelong, VIC 3216, Australia; (G.W.); (Z.X.); (Y.W.); (F.S.)
| | - Fenghua She
- Institute for Frontier Materials, Deakin University, Geelong, VIC 3216, Australia; (G.W.); (Z.X.); (Y.W.); (F.S.)
| | - Stephen Gray
- Institute for Sustainable Industries and Liveable Cities, Victoria University, Melbourne, VIC 8001, Australia; (J.Z.); (S.G.)
| | - Lingxue Kong
- Institute for Frontier Materials, Deakin University, Geelong, VIC 3216, Australia; (G.W.); (Z.X.); (Y.W.); (F.S.)
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21
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Wang K, Meng Y, Jiao X, Huang W, Fan D, Liu TCY. Facile Synthesis of an Economic 3D Surface-Enhanced Raman Scattering Platform for Ultrasensitive Detection of Antibiotics. FOOD ANAL METHOD 2020. [DOI: 10.1007/s12161-020-01815-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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22
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Huo ZY, Du Y, Chen Z, Wu YH, Hu HY. Evaluation and prospects of nanomaterial-enabled innovative processes and devices for water disinfection: A state-of-the-art review. WATER RESEARCH 2020; 173:115581. [PMID: 32058153 DOI: 10.1016/j.watres.2020.115581] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 01/13/2020] [Accepted: 02/01/2020] [Indexed: 06/10/2023]
Abstract
This study provided an overview of established and emerging nanomaterial (NM)-enabled processes and devices for water disinfection for both centralized and decentralized systems. In addition to a discussion of major disinfection mechanisms, data on disinfection performance (shortest contact time for complete disinfection) and energy efficiency (electrical energy per order; EEO) were collected enabling assessments firstly for disinfection processes and then for disinfection devices. The NM-enabled electro-based disinfection process gained the highest disinfection efficiency with the lowest energy consumption compared with physical-based, peroxy-based, and photo-based disinfection processes owing to the unique disinfection mechanism and the direct mean of translating energy input to microbes. Among the established disinfection devices (e.g., the stirred, the plug-flow, and the flow-through reactor), the flow-through reactor with mesh/membrane or 3-dimensional porous electrodes showed the highest disinfection performance and energy efficiency attributed to its highest mass transfer efficiency. Additionally, we also summarized recent knowledge about current and potential NMs separation and recovery methods as well as electrode strengthening and optimization strategies. Magnetic separation and robust immobilization (anchoring and coating) are feasible strategies to prompt the practical application of NM-enabled disinfection devices. Magnetic separation effectively solved the problem for the separation of evenly distributed particle-sized NMs from microbial solution and robust immobilization increased the stability of NM-modified electrodes and prevented these electrodes from degradation by hydraulic detachment and/or electrochemical dissolution. Furthermore, the study of computational fluid dynamics (CFD) was capable of simulating NM-enabled devices, which showed great potential for system optimization and reactor expansion. In this overview, we stressed the need to concern not only the treatment performance and energy efficiency of NM-enabled disinfection processes and devices but also the overall feasibility of system construction and operation for practical application.
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Affiliation(s)
- Zheng-Yang Huo
- Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), School of Environment, Tsinghua University, Beijing, 100084, PR China; School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
| | - Ye Du
- Shenzhen Environmental Science and New Energy Technology Engineering Laboratory, Tsinghua-Berkeley Shenzhen Institute, Shenzhen, 518055, PR China
| | - Zhuo Chen
- Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), School of Environment, Tsinghua University, Beijing, 100084, PR China
| | - Yin-Hu Wu
- Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), School of Environment, Tsinghua University, Beijing, 100084, PR China.
| | - Hong-Ying Hu
- Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), School of Environment, Tsinghua University, Beijing, 100084, PR China; Shenzhen Environmental Science and New Energy Technology Engineering Laboratory, Tsinghua-Berkeley Shenzhen Institute, Shenzhen, 518055, PR China
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23
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Wang Y, Liu S, Wang J, Tang F. Polymer network strengthened filter paper for durable water disinfection. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.124548] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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24
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Loo SL, Vásquez L, Paul UC, Campagnolo L, Athanassiou A, Fragouli D. Solar-Driven Freshwater Generation from Seawater and Atmospheric Moisture Enabled by a Hydrophilic Photothermal Foam. ACS APPLIED MATERIALS & INTERFACES 2020; 12:10307-10316. [PMID: 32058681 PMCID: PMC7997105 DOI: 10.1021/acsami.9b20291] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 02/14/2020] [Indexed: 06/01/2023]
Abstract
The accelerated increase in freshwater demand, particularly among populations displaced in remote locations where conventional water sources and the infrastructure required to produce potable water may be completely absent, highlights the urgent need in creating additional freshwater supply from untapped alternative sources via energy-efficient solutions. Herein, we present a hydrophilic and self-floating photothermal foam that can generate potable water from seawater and atmospheric moisture via solar-driven evaporation at its interface. Specifically, the foam shows an excellent solar-evaporation rate of 1.89 kg m-2 h-1 with a solar-to-vapor conversion efficiency of 92.7% under 1-Sun illumination. The collected water is shown to be suitable for potable use because when synthetic seawater samples (3.5 wt %) are used, the foam is able to cause at least 99.99% of salinity reduction. The foam can also be repeatedly used in multiple hydration-dehydration cycles, consisting of moisture absorption or water collection, followed by solar-driven evaporation; in each cycle, 1 g of the foam can harvest 250-1770 mg of water. To the best of our knowledge, this is the first report of a material that integrates all the desirable properties for solar evaporation, water collection, and atmospheric-water harvesting. The lightweight and versatility of the foam suggest that the developed foams can be a potent solution for water efficiency, especially for off-grid situations.
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Affiliation(s)
- Siew-Leng Loo
- Smart
Materials, Istituto Italiano di Tecnologia, Via Morego 30, Genova 16163, Italy
| | - Lía Vásquez
- Smart
Materials, Istituto Italiano di Tecnologia, Via Morego 30, Genova 16163, Italy
- Dipartimento
di Chimica e Chimica Industriale (DCCI), Università degli Studi di Genova, Via Dodecaneso 31, Genoa 16146, Italy
| | - Uttam C. Paul
- Smart
Materials, Istituto Italiano di Tecnologia, Via Morego 30, Genova 16163, Italy
| | - Laura Campagnolo
- Smart
Materials, Istituto Italiano di Tecnologia, Via Morego 30, Genova 16163, Italy
- Dipartimento
di Chimica e Chimica Industriale (DCCI), Università degli Studi di Genova, Via Dodecaneso 31, Genoa 16146, Italy
| | | | - Despina Fragouli
- Smart
Materials, Istituto Italiano di Tecnologia, Via Morego 30, Genova 16163, Italy
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25
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Baimenov A, Berillo D, Inglezakis V. Cryogel-based Ag°/Ag2O nanocomposites for iodide removal from water. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2019.112134] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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26
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A review of cryogels synthesis, characterization and applications on the removal of heavy metals from aqueous solutions. Adv Colloid Interface Sci 2020; 276:102088. [PMID: 31887574 DOI: 10.1016/j.cis.2019.102088] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 12/14/2019] [Accepted: 12/15/2019] [Indexed: 01/27/2023]
Abstract
The physical and chemical attributes of cryogels, such as the macroporosity, elasticity, water permeability and ease of chemical modification have attracted strong research interest in a variety of areas, such as water purification, catalysis, regenerative medicine, biotechnology, bioremediation and biosensors. Cryogels have shown high removal efficiency and selectivity for heavy metals, nutrients, and toxic dyes from aqueous solutions but there are challenges when scaling up from lab to commercial scale applications. This paper represents an overview of the most recent advances in the use of cryogels for the removal of heavy metals from water and attempts to fill the gap in the literature by deepening the understanding on the mechanisms involved, which strongly depend on the initial monomer composition and post-modification agent precursors used in synthesis. The review also describes the advantages of cryogels over other adsorbents and covers synthesis and characterization methods such as SEM/EDS, TEM, FTIR, zeta potential measurements, porosimetry, swelling and mechanical properties.
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27
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Alzahrani HAH, Buckingham MA, Wardley WP, Tilley RD, Ariotti N, Aldous L. Gold nanoparticles immobilised in a superabsorbent hydrogel matrix: facile synthesis and application for the catalytic reduction of toxic compounds. Chem Commun (Camb) 2020; 56:1263-1266. [DOI: 10.1039/c9cc07046j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
AuNP easily synthesised inside bulk hydrogel spheres; stable and catalytically active, even in high ionic strength environments.
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Affiliation(s)
| | | | | | - Richard D. Tilley
- School of Chemistry
- Australian Centre for NanoMedicine and Electron Microscope Unit
- Mark Wainwright Analytical Centre
- MWAC – University of New South Wales
- Sydney
| | - Nicholas Ariotti
- School of Medical Sciences and Electron Microscope Unit Mark Wainwright Analytical Centre
- The University of New South Wales
- Australia
| | - Leigh Aldous
- Department of Chemistry
- Britannia House
- King's College London
- London
- UK
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Lehtonen J, Hassinen J, Honkanen R, Kumar AA, Viskari H, Kettunen A, Pahimanolis N, Pradeep T, Rojas OJ, Ikkala O. Effects of Chloride Concentration on the Water Disinfection Performance of Silver Containing Nanocellulose-based Composites. Sci Rep 2019; 9:19505. [PMID: 31862996 PMCID: PMC6925197 DOI: 10.1038/s41598-019-56009-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Accepted: 11/28/2019] [Indexed: 11/09/2022] Open
Abstract
The availability of microbially-safe drinking water is a challenge in many developing regions. Due to the well-known antibacterial effect of silver ions, materials used for their controlled release have been widely studied for point-of-use water disinfection. However, even if it is in principle known that chloride anions can suppress the antibacterial efficiency of silver, the majority of previous studies, surprisingly, have not focused on chloride concentrations relevant for freshwaters and thus for practical applications. Here, we prepared low-cost nanocellulose-aluminium oxyhydroxide nanocomposites functionalized with silver nanoparticles. Field samples obtained from Chennai, India were used as a guideline for choosing relevant chloride concentrations for the antibacterial studies, i.e., 10, 90, and 290 ppm. The antibacterial performance of the material against Escherichia coli and Bacillus subtilis was demonstrated and the influence of chloride concentration on the antibacterial effect was studied with E. coli. A 1 h contact time led to bacterial reductions of 5.6 log10, 2.9 log10, and 2.2 log10, respectively. This indicates that an increase of chloride concentration leads to a substantial reduction of antibacterial efficiency, even within chloride concentrations found in freshwaters. This work enables further insights for designing freshwater purification systems that utilize silver-releasing materials.
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Affiliation(s)
- Janika Lehtonen
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P. O. Box 16300, FI-00076, Aalto, Espoo, Finland
| | - Jukka Hassinen
- Department of Applied Physics, School of Science, Aalto University, P. O. Box 16300, FI-00076, Aalto, Espoo, Finland.
| | - Riina Honkanen
- Industrial Water Ltd., Moreenikatu 2 B, FI-04600, Mäntsälä, Finland
| | - Avula Anil Kumar
- DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence (TUE), Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Heli Viskari
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P. O. Box 16300, FI-00076, Aalto, Espoo, Finland
| | - Anu Kettunen
- Industrial Water Ltd., Moreenikatu 2 B, FI-04600, Mäntsälä, Finland
| | | | - Thalappil Pradeep
- DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence (TUE), Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Orlando J Rojas
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P. O. Box 16300, FI-00076, Aalto, Espoo, Finland.,Department of Applied Physics, School of Science, Aalto University, P. O. Box 16300, FI-00076, Aalto, Espoo, Finland
| | - Olli Ikkala
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P. O. Box 16300, FI-00076, Aalto, Espoo, Finland.,Department of Applied Physics, School of Science, Aalto University, P. O. Box 16300, FI-00076, Aalto, Espoo, Finland
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Bharti S, Mukherji S, Mukherji S. Water disinfection using fixed bed reactors packed with silver nanoparticle immobilized glass capillary tubes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 689:991-1000. [PMID: 31280180 DOI: 10.1016/j.scitotenv.2019.06.482] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 06/10/2019] [Accepted: 06/27/2019] [Indexed: 06/09/2023]
Abstract
The present study focused on development of a robust point-of-use (POU) water disinfection device employing immobilized silver nanoparticles (AgNPs) for water disinfection in continuous flow through mode. Glass capillary tubes functionalized with positively charged amino groups using silane as the cross-linking agent facilitated the immobilization of citrate stabilized AgNPs. A fixed bed reactor (FBR) packed with these AgNP immobilized glass substrate was used for conducting POU water disinfection. The effect of various parameters such as, flow rate, initial concentration of bacteria and bed volume on disinfection performance of the device was evaluated. The total volume of water treated at breakpoint was found to improve with increase in flow rate and 2596-5172 bed volumes of water could be disinfected under the various conditions tested, i.e., empty bed contact time (EBCT) 0.29 to 5.8 min. Silver leaching studied under various operating conditions revealed minimal release of silver (<100 μg/l) in treated water over time throughout the duration of the studies. Plug flow reactor with dispersion (PFDR) model with open boundary condition showed good fit to the E-curve generated by pulse input of chloride tracer and revealed significant dispersion in the FBR. Antibacterial material exhaustion rate (AER) was significantly affected by the EBCT, empty bed volume of the FBR, and load of bacteria in the influent.
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Affiliation(s)
- Sharda Bharti
- Environmental Science and Engineering Department, IIT Bombay, Mumbai 400 076, India
| | - Soumyo Mukherji
- Department of Bioscience and Bioengineering, IIT Bombay, Mumbai 400 076, India
| | - Suparna Mukherji
- Environmental Science and Engineering Department, IIT Bombay, Mumbai 400 076, India.
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30
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Zhang Y, Yang JCE, Fu ML, Yuan B, Gupta K. One-step fabrication of recycled Ag nanoparticles/graphene aerogel with high mechanical property for disinfection and catalytic reduction of 4-nitrophonel. ENVIRONMENTAL TECHNOLOGY 2019; 40:3381-3391. [PMID: 29726750 DOI: 10.1080/09593330.2018.1473503] [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: 02/09/2018] [Accepted: 04/26/2018] [Indexed: 06/08/2023]
Abstract
Fabrication of smart composites with expected removal property and excellent recycle performance for micro-pollutants including microbes and organic contaminants without formation of second-pollutants is highly desired. In this work, Ag nanoparticles (Ag NPs) homogenously loaded on graphene aerogel (GA) as Ag NPs/GA was facilely fabricated by a one-step process and the composite was characterized in detail. The bactericidal performance of the composite towards escherichia coli (E. coli) was evaluated and the catalytic activity was probed for the reduction of 4-nitrophenol (4-NP). Results showed that the composite contains about 44.4 wt% of well-dispersed Ag NPs with diameters ranging from 10 to 100 nm. Compared with the bare Ag particles or GA, Ag NPs/GA exhibited an enhanced bactericidal performance for 8-lg of E. coli cells with 100% inactivation rate and catalytic activity for 4-NP with 96.6% degradation rate, respectively. Impressively, the 100% inactivation rates for 8-lg of E. coli remained after 7 recycles and the releasing silver was negligible compared with the loaded Ag NPs. Moreover, the used Ag NPs/GA for the catalytic reduction of 4-NP can be regenerated easily by calcination in inert atmosphere. Hence, Ag NPs/GA can be regarded as a promising and cost-efficient composite for environmental remediation.
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Affiliation(s)
- Yi Zhang
- Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment (IUE), Chinese Academy of Sciences , Xiamen , People's Republic of China
- University of Chinese Academy of Sciences , Beijing , People's Republic of China
| | - Jia-Cheng E Yang
- Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment (IUE), Chinese Academy of Sciences , Xiamen , People's Republic of China
- University of Chinese Academy of Sciences , Beijing , People's Republic of China
| | - Ming-Lai Fu
- Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment (IUE), Chinese Academy of Sciences , Xiamen , People's Republic of China
| | - Baoling Yuan
- College of Civil Engineering, Huaqiao University , Xiamen , People's Republic of China
| | - Kiran Gupta
- Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment (IUE), Chinese Academy of Sciences , Xiamen , People's Republic of China
- Xiamen Urban Water Environmental Eco-Planning and Remediation Engineering Research Center (XMERC) , Xiamen, People's Republic of China
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31
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Advances in Legionella Control by a New Formulation of Hydrogen Peroxide and Silver Salts in a Hospital Hot Water Network. Pathogens 2019; 8:pathogens8040209. [PMID: 31671765 PMCID: PMC6963979 DOI: 10.3390/pathogens8040209] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 10/24/2019] [Accepted: 10/25/2019] [Indexed: 01/22/2023] Open
Abstract
Legionella surveillance is an important issue in public health, linked to the severity of disease and the difficulty associated with eradicating this bacterium from the water environment. Different treatments are suggested to reduce Legionella risk, however long-term studies of their efficiency are lacking. This study focused on the activity of a new formulation of hydrogen peroxide and silver salts, WTP828, in the hospital hot water network (HWN) to contain Legionella contamination during two years of treatment. The effectiveness of WTP828 was tested measuring physical-chemical and microbiological parameters such as Legionella, Pseudomonas aeruginosa (P. aeruginosa), and a heterotopic plate count (HPC) at 36 °C. Legionella isolates were identified by serotyping and genotyping. WTP 828 induced a reduction in Legionella–positive sites (60% to 36%) and contamination levels (2.12 to 1.7 log10 CFU/L), with isolates belonging to L. pneumophila SG1 (ST1 and ST104), L. anisa and L. rubrilucens widely distributed in HWN. No relevant contamination was found for other parameters tested. The long-term effect of WTP828 on Legionella containment suggest the easy and safe application of this disinfectant, that combined with knowledge of building characteristics, an adequate environmental monitoring and risk assessment plan, become the key elements in preventing Legionella contamination and exposure.
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32
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Jung J, Menzies DJ, Thissen H, Easton CD, Evans RA, Henry R, Deletic A, McCarthy DT. New prebiotic chemistry inspired filter media for stormwater/greywater disinfection. JOURNAL OF HAZARDOUS MATERIALS 2019; 378:120749. [PMID: 31226585 DOI: 10.1016/j.jhazmat.2019.120749] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 04/19/2019] [Accepted: 06/06/2019] [Indexed: 06/09/2023]
Abstract
Greywater and stormwater have received significant attention due to increasing water scarcity. Passive filtration such as biofiltration has been a popular treatment method with its low energy input and environmental friendliness. However, pathogen removal capacity needs improvement to achieve safe water quality. In this study, a prebiotic chemistry inspired copolymer based on aminomalononitrile and 3,4,5-trihydroxybenzaldehyde (AMNT30) was introduced to develop antimicrobial media for passive filtration. The AMNT30 polymer provided an adhesive coating on zeolite substrates following a spontaneous polymerisation process at room temperature. AMNT30 coated media were investigated for metal loading capacity, surface morphology, E. coli removal and metal leaching after filtration of different water sources (i.e. stormwater, greywater, and deionised water) at low/high conductivity. The coating enhanced metal ion loading on the surface and demonstrated that >8 log reduction of E. coli can be achieved for silver loaded materials compared to a 1 log reduction for copper loaded materials. The coating also increased the stability of the metals on the media irrespective of inflow characteristics. This study provided the first example using AMNT30 to create antimicrobial water purification media. It is expected that this technology will find applications in the water treatment industry.
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Affiliation(s)
- J Jung
- Environmental and Public Health Microbiology Laboratory (EPHM Lab), Department of Civil Engineering, Monash University, Clayton, Victoria 3800, Australia; Cooperative Research Centre for Water Sensitive Cities, Melbourne, Victoria 3800, Australia.
| | - D J Menzies
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Manufacturing, Clayton, Victoria 3168, Australia
| | - H Thissen
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Manufacturing, Clayton, Victoria 3168, Australia
| | - C D Easton
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Manufacturing, Clayton, Victoria 3168, Australia
| | - R A Evans
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Manufacturing, Clayton, Victoria 3168, Australia
| | - R Henry
- Environmental and Public Health Microbiology Laboratory (EPHM Lab), Department of Civil Engineering, Monash University, Clayton, Victoria 3800, Australia; Cooperative Research Centre for Water Sensitive Cities, Melbourne, Victoria 3800, Australia
| | - A Deletic
- School of Civil and Environmental Engineering, University of New South Wales, New South Wales 2052, Australia
| | - D T McCarthy
- Environmental and Public Health Microbiology Laboratory (EPHM Lab), Department of Civil Engineering, Monash University, Clayton, Victoria 3800, Australia; Cooperative Research Centre for Water Sensitive Cities, Melbourne, Victoria 3800, Australia.
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33
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Jacukowicz-Sobala I, Kociołek-Balawejder E, Stanisławska E, Dworniczek E, Seniuk A. Antimicrobial activity of anion exchangers containing cupric compounds against Enterococcus faecalis. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.05.040] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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34
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Chen W, Jiang J, Zhang W, Wang T, Zhou J, Huang CH, Xie X. Silver Nanowire-Modified Filter with Controllable Silver Ion Release for Point-of-Use Disinfection. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:7504-7512. [PMID: 31184870 DOI: 10.1021/acs.est.9b01678] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Waterborne diseases related to unsafe water are still major threats to public health in some developing countries and rural areas. Providing affordable and safe drinking water globally remains a great challenge in the coming decades. In this study, we develop a high-throughput and conductive silver nanowire (AgNW)-modified composite filter via depositing thin and ultralong AgNWs on a macroporous substrate. An electrochemical filtration cell (EFC) equipped with the composite filter achieves controllable Ag+ release at a μg L-1 level and superior bacterial inactivation performance (>6-log inactivation efficiency) with an operation voltage of only 1 V at a high flux of 100 m3 h-1 m-2. Under such operation conditions, each composite filter (effective area: 0.79 cm2) can treat at least 750 mL of the bacterial suspension (∼107 CFU mL-1 of Escherichia coli) with a low effluent Ag+ concentration below 50 μg L-1 and almost negligible energy consumption of only ∼70 J m-3.
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Affiliation(s)
- Wensi Chen
- School of Civil and Environmental Engineering , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
| | - Jinyue Jiang
- School of Civil and Environmental Engineering , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
- School of Environment , Tsinghua University , Beijing 100084 , People's Republic of China
| | - Wenlong Zhang
- School of Civil and Environmental Engineering , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
| | - Ting Wang
- School of Civil and Environmental Engineering , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
| | - Jianfeng Zhou
- School of Civil and Environmental Engineering , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
| | - Ching-Hua Huang
- School of Civil and Environmental Engineering , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
| | - Xing Xie
- School of Civil and Environmental Engineering , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
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35
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Fan X, Liu Y, Wang X, Quan X, Chen S. Improvement of Antifouling and Antimicrobial Abilities on Silver-Carbon Nanotube Based Membranes under Electrochemical Assistance. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:5292-5300. [PMID: 30933494 DOI: 10.1021/acs.est.9b00313] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Excellent fouling resistance to various foulants is crucial to maintain the separation performance of membranes in providing potable water. Antimicrobial modification is effective for antibiofouling but fails to mitigate organic fouling. Improving surface charges can improve the resistance to charged foulants, but the lack of antimicrobial ability results in bacterial aggregation. Herein, a silver nanoparticle modified carbon nanotube (Ag-CNT)/ceramic membrane was prepared with enhanced antifouling and antimicrobial properties under electrochemical assistance. The presence of silver nanoparticles endows the composite membrane with antimicrobial ability by which biofilm formation is inhibited. Its steady-state flux is 1.9 times higher than that for an unmodified membrane in filtering bacterial suspension. Although the formation of organic fouling did weaken the biofouling resistance, the negatively charged bacteria and organic matter can be sufficiently repelled away from the cathodic membrane under electrochemical assistance. The flux loss under a low-voltage of 2.0 V decreased to <10% from >35% for the membrane alone when bacteria and organic matter coexisted in the feedwater. More importantly, silver dissolution was significantly inhibited via an in situ electroreduction process by which the Ag+ concentration in the effluent (<1.0 μg/L) was about 2 orders of magnitude lower than that without voltage. The integration of antimicrobial modification and electrochemistry offers a new prospect in the development of membranes with high fouling resistance in water treatment.
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Affiliation(s)
- Xinfei Fan
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology , Dalian University of Technology , Dalian 116024 , China
- College of Environmental Science and Engineering , Dalian Maritime University , Dalian 116026 , China
| | - Yanming Liu
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology , Dalian University of Technology , Dalian 116024 , China
| | - Xiaochen Wang
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology , Dalian University of Technology , Dalian 116024 , China
| | - Xie Quan
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology , Dalian University of Technology , Dalian 116024 , China
| | - Shuo Chen
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology , Dalian University of Technology , Dalian 116024 , China
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36
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Liu X, Luan S, Li W. Utilization of waste hemicelluloses lye for superabsorbent hydrogel synthesis. Int J Biol Macromol 2019; 132:954-962. [PMID: 30974135 DOI: 10.1016/j.ijbiomac.2019.04.041] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Revised: 03/28/2019] [Accepted: 04/07/2019] [Indexed: 12/18/2022]
Abstract
A high-performance superabsorbent hydrogel have been successfully fabricated by using waste hemicelluloses lye. Not any extra base was added into the synthesis system for achieving hydrophilic polymer composite. In addition, polyvinyl alcohol (PVA) was added the reaction system to entrap within the hemicelluloses-g-AA/bentonite matrix and form a semi-interpenetrating polymer networks (semi-IPN) for enhancing the swelling properties of the as-prepared polymer composite. SEM, FTIR, and TG were employed to characterize the morphologies, structure, and thermal stability of as-synthesized hydrogel composite. Moreover, liquid absorbency in distilled water and saline solutions, water absorption rate, water retainability, and water reusability of hemicelluloses-g-AA/bentonite (HAB) and hemicelluloses-g-AA/bentonite-PVA (HAB-PVA) hydrogels were also investigated systematically. The adsorption kinetics and isotherms of the composites were studied, and the synergy effect of PVA and bentonite were also proposed. This method provides a new avenue to design the new structure of superabsorbent hydrogel and treat the waste lye in green and sustainable chemical engineering processes.
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Affiliation(s)
- Xinwei Liu
- College of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China.
| | - Sen Luan
- Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Wei Li
- Department of Chemistry, Capital Normal University, Beijing 100048, China.
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37
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Shin JU, Gwon J, Lee SY, Yoo HS. Silver-Incorporated Nanocellulose Fibers for Antibacterial Hydrogels. ACS OMEGA 2018; 3:16150-16157. [PMID: 31458251 PMCID: PMC6643637 DOI: 10.1021/acsomega.8b02180] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 11/14/2018] [Indexed: 05/09/2023]
Abstract
A free-standing, antibacterial hydrogel was fabricated using silver-nanoparticle-immobilized cellulose nanofibers (CNFs) and alginate. Surface hydroxyl groups of CNFs were oxidized to carboxylate groups using (2,2,6,6-tetramethylpiperidin-1-yl)oxidanyl (TCNF), followed by the treatment with silver nitrate solution for surface adsorption of silver ions. In situ reduction of silver ions to produce silver nanoparticles was performed for the silver-adsorbed CNFs. Electron microscopy, X-ray diffraction, and spectroscopic analysis revealed that higher amounts of silver nanoparticles were immobilized on the surface of TCNF than on the surface of native CNF. Silver-nanoparticle-immobilized TCNF was embedded in alginate gels and silver ions from the matrix were slowly released for 7 days. Silver-nanoparticle-loaded alginate gels showed comparable antibacterial activity to silver-ions-loaded alginate gels, although the former showed a significantly lower cytotoxicity against animal cells. Thus, the antibacterial gels can potentially be applied to various skin surfaces to prevent bacterial infection while minimizing skin damage.
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Affiliation(s)
- Ji Un Shin
- Department
of Biomedical Materials Engineering and Institute of Bioscience and Biotechnology, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Jaegyoung Gwon
- Department
of Forest Products, National Institute of
Forest Science, Seoul 02455, Republic of Korea
| | - Sun-Young Lee
- Department
of Forest Products, National Institute of
Forest Science, Seoul 02455, Republic of Korea
| | - Hyuk Sang Yoo
- Department
of Biomedical Materials Engineering and Institute of Bioscience and Biotechnology, Kangwon National University, Chuncheon 24341, Republic of Korea
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38
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Ussia M, Di Mauro A, Mecca T, Cunsolo F, Nicotra G, Spinella C, Cerruti P, Impellizzeri G, Privitera V, Carroccio SC. ZnO-pHEMA Nanocomposites: An Ecofriendly and Reusable Material for Water Remediation. ACS APPLIED MATERIALS & INTERFACES 2018; 10:40100-40110. [PMID: 30358979 DOI: 10.1021/acsami.8b13029] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The design of new hybrid nanocomposites based on poly(2-hydroxyethylmethacrylate) (pHEMA) graphene oxide (GO) cryosponges, wherein ZnO nanolayers have been deposited to induce photocatalytic properties, is reported here. Atomic layer deposition at low temperature is specifically selected as the deposition technique to stably anchor ZnO molecules to the pendant polymer OH groups. Furthermore, to boost the pHEMA cryogel adsorption capability versus organic dyes, GO is added during the synthetic procedure. The morphology, the crystallinity, and the chemical composition of the samples are deeply investigated by scanning electron microscopy, transmission electron microscopy, X-ray diffraction analyses, Fourier transform infrared spectroscopy, and thermogravimetric analysis. Swelling properties, mechanical performance, and adsorption kinetics models of the hybrid materials are also evaluated. Finally, the adsorption and photocatalytic performance are tested and compared for all of the samples using methylene blue as a dye. Particularly, the adsorption efficiency of ZnO/pHEMA and ZnO/pHEMA-GO nanocomposites, as well as their in situ regeneration via photocatalysis, renders such devices very appealing for advanced wastewater treatment technology.
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Affiliation(s)
- Martina Ussia
- CNR-IMM , Via Santa Sofia 64 , 95123 Catania , Italy
- Department of Physics and Astronomy , University of Catania , via Santa Sofia 64 , 95123 Catania , Italy
| | | | - Tommaso Mecca
- CNR-ICB , Via Paolo Gaifami 18 , 95126 Catania , Italy
| | | | | | | | | | | | | | - Sabrina C Carroccio
- CNR-IMM , Via Santa Sofia 64 , 95123 Catania , Italy
- CNR-IPCB , Via Paolo Gaifami 18 , 95126 Catania , Italy
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39
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Kirti S, Bhandari VM, Jena J, Bhattacharyya AS. Elucidating efficacy of biomass derived nanocomposites in water and wastewater treatment. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2018; 226:95-105. [PMID: 30114577 DOI: 10.1016/j.jenvman.2018.08.028] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 08/01/2018] [Accepted: 08/06/2018] [Indexed: 06/08/2023]
Abstract
In the present study, two synthesis methods of nanocomposites-one involving a mixture of biomass and the other using chemical modification were investigated to evaluate practical application of green approach in pollution control, specifically for water and wastewater treatment. Newer multifunctional superparamagnetic nanocomposites using biomaterials such as unripened fruit of Cassia fistula (Golden shower) and Aloe vera were developed as an example of green approach while chemical modification was illustrated using n-octanol. Two specific model applications were studied for the developed materials-dye removal (Methyl Blue and Congo Red) and disinfection-demonstrating antimicrobial property. To elucidate the multifunctional character, the texture, morphology and composition of the prepared bionanocomposites were studied. The surface area values were 6.2 and 9.8 m2/g for Aloe vera and octanol based nanocomposites while the average pore diameters were 1.79 nm and 5.7 nm respectively, indicating presence of highly developed micropores in the first material having a honeycomb shape and the later showing excellent staircase type formation with larger pores. A very high dye removal to the extent of 100% was obtained that can be attributed largely to the functionalities imparted from Cassia fistula compared to ingredients from Aloe vera and octanol. The nanomaterials could be completely separated with absolute ease by applying simple magnetic field. Also, successful application of the developed materials in disinfection, removal of E. coli, was demonstrated with a very high efficiency of over 95%. The biomass derived nanocomposites exhibit excellent pollutant removal and disinfection properties, even at very low nanoparticle content; octanol based material indicating ∼5 times lowered cost, while the Aloe vera based bionanocomposites have potential for cost reduction to the extent of 10 times as compared to only magnetite nanoparticles, thereby highlighting techno-economical alternative in water and wastewater treatment.
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Affiliation(s)
- Saumaya Kirti
- Chemical Engineering & Process Development Division, CSIR-National Chemical Laboratory, Pune, 411008, India; Centre for Nanotechnology, Central University of Jharkhand, Brambe, Ranchi, 835205, India
| | - Vinay M Bhandari
- Chemical Engineering & Process Development Division, CSIR-National Chemical Laboratory, Pune, 411008, India.
| | - Jyotsnarani Jena
- Chemical Engineering & Process Development Division, CSIR-National Chemical Laboratory, Pune, 411008, India
| | - Arnab S Bhattacharyya
- Centre for Nanotechnology, Central University of Jharkhand, Brambe, Ranchi, 835205, India
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40
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Westerhoff P, Atkinson A, Fortner J, Wong MS, Zimmerman J, Gardea-Torresdey J, Ranville J, Herckes P. Low risk posed by engineered and incidental nanoparticles in drinking water. NATURE NANOTECHNOLOGY 2018; 13:661-669. [PMID: 30082812 DOI: 10.1038/s41565-018-0217-9] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Revised: 06/20/2018] [Accepted: 06/29/2018] [Indexed: 05/06/2023]
Abstract
Natural nanoparticles (NNPs) in rivers, lakes, oceans and ground water predate humans, but engineered nanoparticles (ENPs) are emerging as potential pollutants due to increasing regulatory and public perception concerns. This Review contrasts the sources, composition and potential occurrence of NNPs (for example, two-dimensional clays, multifunctional viruses and metal oxides) and ENPs in surface water, after centralized drinking water treatment, and in tap water. While analytical detection challenges exist, ENPs are currently orders of magnitude less common than NNPs in waters that flow into drinking water treatment plants. Because such plants are designed to remove small-sized NNPs, they are also very good at removing ENPs. Consequently, ENP concentrations in tap water are extremely low and pose low risk during ingestion. However, after leaving drinking water treatment plants, corrosion by-products released from distribution pipes or in-home premise plumbing can release incidental nanoparticles into tap water. The occurrence and toxicity of incidental nanoparticles, rather than ENPs, should therefore be the focus of future research.
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Affiliation(s)
- Paul Westerhoff
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ, USA.
| | - Ariel Atkinson
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ, USA
| | - John Fortner
- Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis, St. Louis, MO, USA
| | - Michael S Wong
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, Department of Chemical Engineering, Rice University, Houston, TX, USA
| | - Julie Zimmerman
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, Department of Chemical and Environmental Engineering, Yale University, New Haven, CT, USA
| | - Jorge Gardea-Torresdey
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, Department of Chemistry, University of Texas - El Paso, El Paso, TX, USA
| | - James Ranville
- Department of Chemistry and Geochemistry, Colorado School of Mines, Golden, CO, USA
| | - Pierre Herckes
- School of Molecular Sciences, Arizona State University, Tempe, AZ, USA
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41
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Kumar A, Boyer C, Nebhani L, Wong EHH. Highly Bactericidal Macroporous Antimicrobial Polymeric Gel for Point-of-Use Water Disinfection. Sci Rep 2018; 8:7965. [PMID: 29785029 PMCID: PMC5962547 DOI: 10.1038/s41598-018-26202-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 05/08/2018] [Indexed: 12/21/2022] Open
Abstract
Access to clean and safe water supply remains inadequate in many developing countries. One of the key challenges is to remove pathogenic bacteria from the water supply via effective water disinfection technologies to prevent the spread of diseases and to ensure the safety of consumers. Herein, a highly effective point-of-use (on-demand) water disinfection technology, in the form of a polymeric scaffold called macroporous antimicrobial polymeric gel (MAPG), is demonstrated. MAPG is easy to fabricate, completely organic and possess inherent antimicrobial property which makes it non-reliant on inorganic compounds such as silver where the long-term toxicity remains unknown. MAPG is highly bactericidal and can disinfect bacteria-contaminated water (ca. 108 CFU mL-1) at a capacity of about >50 times the mass of the organic material used, inactivating >99% of both Gram-negative and Gram-positive bacteria including Escherichia coli, Vibrio cholerae and Staphylococcus aureus within 20 minutes of treatment. When fabricated in a syringe, MAPG eliminates E. coli from contaminated water source by >8.0 log10 reduction in bacteria counts (i.e., no viable bacteria were detected after treatment), and the syringe can be reused multiple times without losing potency. The MAPG technology is not only restricted to water disinfection but may also be applicable in other bacteria inactivation applications.
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Affiliation(s)
- Amit Kumar
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India
| | - Cyrille Boyer
- Centre for Advanced Macromolecular Design (CAMD) and Australian Centre for NanoMedicine (ACN), School of Chemical Engineering, UNSW Australia, Sydney, NSW 2052, Australia
| | - Leena Nebhani
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India.
| | - Edgar H H Wong
- Centre for Advanced Macromolecular Design (CAMD) and Australian Centre for NanoMedicine (ACN), School of Chemical Engineering, UNSW Australia, Sydney, NSW 2052, Australia.
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42
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Jia Z, Shu Y, Huang R, Liu J, Liu L. Enhanced reactivity of nZVI embedded into supermacroporous cryogels for highly efficient Cr(VI) and total Cr removal from aqueous solution. CHEMOSPHERE 2018; 199:232-242. [PMID: 29438951 DOI: 10.1016/j.chemosphere.2018.02.021] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 12/11/2017] [Accepted: 02/04/2018] [Indexed: 06/08/2023]
Abstract
Novel supermacroporous PSA-nZVI composites with nanoscale zero-valent iron particles (nZVI) embedded into poly (sodium acrylate) (PSA) cryogels were synthesized through ion exchange followed by in-situ reduction. The magnetic composites were evaluated for material characterizations and their efficiency for Cr(VI) and total Cr removal from aqueous medium in batch experiments. PSA-nZVI composites with high nZVI loading capacity up to 128.70 mg Fe/g PSA were obtained, and the interconnected macroporous structure of PSA cryogel remained unaltered with nZVI uniformly distributed on PSA cryogel as determined by TGA, SEM, TEM, XRD and XPS analyses. PSA-nZVI composites showed faster reaction rate than free nZVI both for Cr(VI) and total Cr removal, suggesting no mass transfer resistance and the enhanced reactivity of nZVI in PSA carrier. PSA-nZVI composites exhibited much more remarkable performance for Cr(VI) and total Cr removal than free nZVI particles in high removal capacity and broad pH application range (pH 4-10). The reaction mechanisms were also elucidated with XPS analyses before and after Cr(VI) reduction reactions. These results demonstrate that PSA cryogel acts as an excellent carrier and shows multiple functions in nZVI particle dispersion, pH buffering and oxidation resistance in addition to immobilizing nZVI particles from release.
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Affiliation(s)
- Zhenzhen Jia
- School of Chemistry & Environment, South China Normal University, Guangzhou, 510006, China
| | - Yuehong Shu
- School of Chemistry & Environment, South China Normal University, Guangzhou, 510006, China; Guangdong Engineering Technology Research Center for Drinking Water Safety, Guangzhou, 510006, China; Guangdong Key Lab of Functional Materials for Environment Protection, Guangzhou, 510006, China.
| | - Renlong Huang
- School of Chemistry & Environment, South China Normal University, Guangzhou, 510006, China
| | - Junguang Liu
- School of Chemistry & Environment, South China Normal University, Guangzhou, 510006, China
| | - Lingling Liu
- School of Chemistry & Environment, South China Normal University, Guangzhou, 510006, China
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43
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Fan M, Gong L, Huang Y, Wang D, Gong Z. Facile preparation of silver nanoparticle decorated chitosan cryogels for point-of-use water disinfection. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 613-614:1317-1323. [PMID: 28968934 DOI: 10.1016/j.scitotenv.2017.09.256] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 09/23/2017] [Accepted: 09/24/2017] [Indexed: 05/10/2023]
Abstract
In this study, silver nanoparticle decorated chitosan (CS/Ag NP) cryogels were fabricated through a simple freeze-drying process for point-of-use (POU) water disinfection. The CS/Ag NP cryogels showed high porosity, good mechanical properties, an excellent water absorption capability, and most importantly, an efficient bactericidal feature. The absorption capacity for water was found to be 47g/g, approximately 90% of which was recovered by simple squeezing. Three different sizes of Ag NPs were compared regarding their bactericidal capability against both Escherichia coli (E. coli) and Bacillus subtilis (B. subtilis). Under optimum conditions, a 3 log reduction of bacteria was observed by holding the bacteria suspension (108 colony forming units (cfu)/mL) in the cryogels for 5min. Reduction was further increased to a 4 log when the contact time was doubled. The silver content in the cryogels was found to only be 7.5mg/g. Furthermore, the total Ag in processed water was found to only be 22μg/L, half of the safety limit set by China (<50μg/L). The bactericidal effectiveness of the material for real surface water samples was also demonstrated by treating water samples with different water quality matrices, including lake water and sewage water samples. In all three treated lake water samples, both the total bacteria and E. coli met the regulations for drinking water in China (<100cfu/mL for total bacteria and negative for E. coli). CS/Ag NP cryogels can be used for drinking water disinfection during disaster relief and in contingency water supply applications.
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Affiliation(s)
- Meikun Fan
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 610031, China; State-province Joint Engineering Laboratory of Spatial Information Technology of High-Speed Rail Safety, Chengdu 610031, China.
| | - Lin Gong
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Yuting Huang
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Dongmei Wang
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Zhengjun Gong
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 610031, China.
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44
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Motshekga SC, Sinha Ray S, Maity A. Synthesis and characterization of alginate beads encapsulated zinc oxide nanoparticles for bacteria disinfection in water. J Colloid Interface Sci 2017; 512:686-692. [PMID: 29107919 DOI: 10.1016/j.jcis.2017.10.098] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 10/23/2017] [Accepted: 10/23/2017] [Indexed: 12/19/2022]
Abstract
The use of polymer nanocomposites as novel materials for water remediation has emerged as a promising alternative for disinfection of bacteria contaminated water. Sodium alginate, a natural biopolymer has been investigated in this study by encapsulating antimicrobial zinc oxide nanoparticles supported bentonite. The confirmation of the alginate nanocomposites was done by use of TEM, SEM-EDS and XRD. The antimicrobial activity of the alginate nanocomposites was investigated by batch studies using surface water and synthetic bacteria contaminated water containing Staphylococcus aureus. The effect of nanocomposite amount and initial bacteria concentration has been studied. The inactivation results indicated that the nanocomposite effectively inactivated bacteria in both the synthetic and surface water. With an amount of 0.5 g of the nanocomposites, no bacteria was observed in the water after 70 min of contact time with initial bacteria concentration of 200 cfu/ml for synthetic water and within a min, no bacteria was observed in the water for surface water. It is worth noting that 200 cfu/ml is the bacteria concentration range in which environmental water is likely to contain. Therefore, the results of this study have indicated that the alginate nanocomposites can be deemed as a potential antimicrobial agent for water disinfection.
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Affiliation(s)
- Sarah Constance Motshekga
- DST/CSIR National Centre for Nanostructured Materials, Council for Scientific and Industrial Research, Pretoria 0001, South Africa.
| | - Suprakas Sinha Ray
- DST/CSIR National Centre for Nanostructured Materials, Council for Scientific and Industrial Research, Pretoria 0001, South Africa; Department of Applied Chemistry, University of Johannesburg, Doornfontein, 2028 Johannesburg, South Africa.
| | - Arjun Maity
- DST/CSIR National Centre for Nanostructured Materials, Council for Scientific and Industrial Research, Pretoria 0001, South Africa; Department of Applied Chemistry, University of Johannesburg, Doornfontein, 2028 Johannesburg, South Africa.
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45
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A novel gravity-driven nanofibrous membrane for point-of-use water disinfection: polydopamine-induced in situ silver incorporation. Sci Rep 2017; 7:2334. [PMID: 28539615 PMCID: PMC5443768 DOI: 10.1038/s41598-017-02452-2] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Accepted: 04/10/2017] [Indexed: 11/25/2022] Open
Abstract
We report a facile method for preparing silver-loaded membranes for point-of-use disinfection and disaster relief applications. A bio-inspired material, polydopamine, was coated onto a highly porous nanofibrous polyacrylonitrile substrate. We then take advantage of the redox properties of polydopamine to form silver nanoparticles in situ. These nanoparticles were uniformly distributed on the surface of nanofibers with no apparent agglomeration at a silver loading up to 4.36 wt.% (cPAN-Ag1.5). The silver-incorporated membrane cPAN-Ag1.5 achieved a high pure water flux of 130 Lm−2 h−1 at 10-cm water head, demonstrating the feasibility of energy-efficient gravity-driven filtration and eliminating the need for electrical power. The strong anti-bacterial activity and high physical rejection of the membrane led to an excellent disinfection power, with no viable bacterial cells detected in its permeate water. The membrane exhibited >7 log reduction for E. coli and >6 log reduction for B. subtilis. The strategy reported here provides an efficient and green route to synthesize point-of-use membranes. Combining their excellent permeability and disinfection effectiveness, these membranes offer an ideal solution to water supply in disaster-affected areas.
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46
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Zou X, Deng P, Zhou C, Hou Y, Chen R, Liang F, Liao L. Preparation of a novel antibacterial chitosan-poly(ethylene glycol) cryogel/silver nanoparticles composites. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2017; 28:1324-1337. [DOI: 10.1080/09205063.2017.1321346] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Xueqing Zou
- College of Chemistry and Molecular Science, Wuhan University, Wuhan, P.R. China
| | - Pengpeng Deng
- College of Chemistry and Molecular Science, Wuhan University, Wuhan, P.R. China
| | - Changjiang Zhou
- College of Chemistry and Molecular Science, Wuhan University, Wuhan, P.R. China
| | - Yulin Hou
- School of Engineering, Sun Yat-Sen University, Guangzhou, P.R. China
| | - Rongsheng Chen
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, P.R. China
| | - Feng Liang
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, P.R. China
| | - Liqiong Liao
- College of Chemistry and Molecular Science, Wuhan University, Wuhan, P.R. China
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47
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Yang Y, Wang H, Huang L, Zhang S, He Y, Gao Q, Ye Q. Effects of superabsorbent polymers on the fate of fungicidal carbendazim in soils. JOURNAL OF HAZARDOUS MATERIALS 2017; 328:70-79. [PMID: 28103488 DOI: 10.1016/j.jhazmat.2016.12.057] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Revised: 12/27/2016] [Accepted: 12/28/2016] [Indexed: 06/06/2023]
Abstract
Superabsorbent polymers (SAPs) have been extensively used as soil amendments to retain water, and they often coexist with pesticides in agricultural fields. However, effects of SAPs on the fate of pesticides in soil remain poorly understood. In this study, a laboratory experiment was conducted to evaluate the effects of SAPs on the transformation of 14C-carbendazim in soils. The results showed that compared to the SAPs-free control, 11.4% relative reduction of 14C-carbendazim extractable residue was observed in red clayey soil with SAPs amendment after 100days of incubation (p<0.05). Carbendazim dissipation was enhanced by 34.7%, while no obvious difference was found in loamy soil and saline soil (p>0.05). SAPs changed the profiles of major metabolites (2-aminobenzimidazole and 2-hydroxybenzimidazole) to some extent. After 100days of SAPs treatment, the mineralization of 14C-carbendazim was significantly reduced by 37.6% and 41.2% in loamy soil and saline soil, respectively, relative to the SAPs-free treatment (p<0.05). SAPs increased the bound residue of carbendazim by 11.1-19.1% in comparison with SAPs-free controls. These findings suggest SAPs amendments significantly affected the fate of carbendazim and attention should be given to the assessment of environmental and ecological safety of pesticides in SAPs-amended soils.
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Affiliation(s)
- Yatian Yang
- Institute of Nuclear Agricultural Sciences, Key Laboratory of Nuclear Agricultural Sciences of Ministry of Agriculture and Zhejiang Province, Zhejiang University, Hangzhou 310029, China
| | - Haiyan Wang
- Institute of Nuclear Agricultural Sciences, Key Laboratory of Nuclear Agricultural Sciences of Ministry of Agriculture and Zhejiang Province, Zhejiang University, Hangzhou 310029, China.
| | - Lei Huang
- Institute of Nuclear Agricultural Sciences, Key Laboratory of Nuclear Agricultural Sciences of Ministry of Agriculture and Zhejiang Province, Zhejiang University, Hangzhou 310029, China
| | - Sufen Zhang
- Institute of Nuclear Agricultural Sciences, Key Laboratory of Nuclear Agricultural Sciences of Ministry of Agriculture and Zhejiang Province, Zhejiang University, Hangzhou 310029, China
| | - Yupeng He
- Institute of Nuclear Agricultural Sciences, Key Laboratory of Nuclear Agricultural Sciences of Ministry of Agriculture and Zhejiang Province, Zhejiang University, Hangzhou 310029, China
| | - Qi Gao
- Institute of Nuclear Agricultural Sciences, Key Laboratory of Nuclear Agricultural Sciences of Ministry of Agriculture and Zhejiang Province, Zhejiang University, Hangzhou 310029, China
| | - Qingfu Ye
- Institute of Nuclear Agricultural Sciences, Key Laboratory of Nuclear Agricultural Sciences of Ministry of Agriculture and Zhejiang Province, Zhejiang University, Hangzhou 310029, China.
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48
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Olad A, Gharekhani H, Mirmohseni A, Bybordi A. Superabsorbent nanocomposite based on maize bran with integration of water-retaining and slow-release NPK fertilizer. ADVANCES IN POLYMER TECHNOLOGY 2017. [DOI: 10.1002/adv.21825] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Ali Olad
- Department of Applied Chemistry; Faculty of Chemistry; Polymer Composite Research Laboratory; University of Tabriz; Tabriz Iran
| | - Hamed Gharekhani
- Department of Applied Chemistry; Faculty of Chemistry; Polymer Composite Research Laboratory; University of Tabriz; Tabriz Iran
| | - Abdolreza Mirmohseni
- Department of Applied Chemistry; Faculty of Chemistry; Polymer Composite Research Laboratory; University of Tabriz; Tabriz Iran
| | - Ahmad Bybordi
- Soil and Water Research Department; East Azarbaijan Agricultural and Natural Resources Research Center; AREEO; Tabriz Iran
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49
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Motshekga SC, Ray SS. Highly efficient inactivation of bacteria found in drinking water using chitosan-bentonite composites: Modelling and breakthrough curve analysis. WATER RESEARCH 2017; 111:213-223. [PMID: 28088718 DOI: 10.1016/j.watres.2017.01.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 12/06/2016] [Accepted: 01/02/2017] [Indexed: 06/06/2023]
Abstract
Disinfection of bacterially-contaminated drinking water requires a robust and effective technique and can be achieved by using an appropriate disinfectant material. The advanced use of nanomaterials is observed as an alternative and effective way for the disinfection process and water treatment as a whole. Hence, the inactivation of Escherichia coli (E. coli) using chitosan-Bentonite (Cts-Bent) composites was studied in a fixed bed column. Cts-Bent composites were synthesized using in situ cross-linking method using Bent-supported silver and zinc oxide nanoparticles. These composites were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, and energy dispersive spectroscopy. The effect of the composite bed mass, initial concentration of bacteria, and flow rate on the bacterial inactivation was investigated. The characterization results revealed that the composites were successfully prepared and confirmed the presence of both silver and zinc oxide nanoparticles in the chitosan matrix. The growth curves of E. coli were expressed as breakthrough curves, based on the logistic, Gompertz, and Boltzmann models. The breakthrough time and processed volume of treated water at breakthrough were used as performance indicators, which revealed that the composites performed best at low bacterial concentration and flow rate and with substantial bed mass. The chitosan composites were found to be highly effective, which was demonstrated when no bacteria were observed in the effluent sample within the first 27 h of analysing river water. All the models were suitable for adequately describing and reproducing the experimental data with a sigmoidal pattern. Therefore, the prepared composite is showing potential to work as a disinfectant and provide an alternative solution for water disinfection; hence this study should propel further research of the same or similar materials.
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Affiliation(s)
- Sarah C Motshekga
- DST-CSIR National Centre for Nanostructured Materials, Council for Scientific and Industrial Research, Pretoria 0001, South Africa
| | - Suprakas Sinha Ray
- DST-CSIR National Centre for Nanostructured Materials, Council for Scientific and Industrial Research, Pretoria 0001, South Africa; Department of Applied Chemistry, University of Johannesburg, Doornfontein, 2028, Johannesburg, South Africa.
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50
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Deng CH, Gong JL, Zhang P, Zeng GM, Song B, Liu HY. Preparation of melamine sponge decorated with silver nanoparticles-modified graphene for water disinfection. J Colloid Interface Sci 2017; 488:26-38. [DOI: 10.1016/j.jcis.2016.10.078] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 10/26/2016] [Accepted: 10/26/2016] [Indexed: 12/20/2022]
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