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Hab Alrman K, Alhariri S, Al- Bakri I. Ultrafiltration membrane based on chitosan/adipic acid: Synthesis, characterization and performance on separation of methylene blue and reactive yellow-145 from aqueous phase. Heliyon 2024; 10:e31055. [PMID: 38867965 PMCID: PMC11167248 DOI: 10.1016/j.heliyon.2024.e31055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 05/05/2024] [Accepted: 05/09/2024] [Indexed: 06/14/2024] Open
Abstract
Here, we report for the first time using of the nontoxic chitosan/adipic acid cross-linked membrane CS/AA in the separation of methylene blue and reactive yellow-145 from aqueous phase. The reason we chose adipic acid as a cross-linking agent is because it gives the cross-linked membrane moderate flexibility due to the presence of four methylene groups in its structure. The structure of the cross-linked membrane CS/AA and their properties were confirmed through, FTIR, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), atomic force microscopy (AFM), and BET analysis. The thermal properties of membrane indicated an improvement in its flexibility and hydrophobicity, but this improvement was accompanied by a decrease in its thermal stability. pHpzc value and porosity of the CS/AA were 7.88, and 73.95 % respectively. The average pore radius distribution ranged from 2 to 27 nm. The prepared cross-linked membrane provides spontaneous and continuous purification of water with a high efficiency. This is due to the membrane CS/AA ability to separate methylene blue and reactive yellow-145 from the aqueous phase almost completely. The results revealed that the removal efficiency and permeation flux for MB were 100 % and 1 L/m2.h respectively at initial dye concentration of (4,8) mg/L, at 1 bar, and the removal efficiency and permeation flux for RY-145 were (94,96) % and (1.06, 2.09) L/m2.h respectively at 100 mg/L and at (1,1.5) bar. Such cross-linked nanopore polymer membranes provide a new approach for emerging novel purification systems, principally in the field of environmental field.
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Affiliation(s)
- Khaled Hab Alrman
- Department of Chemistry, Faculty of Science, Damascus University, Syrian Arab Republic
| | - Sahar Alhariri
- Department of Chemistry, Faculty of Science, Damascus University, Syrian Arab Republic
| | - Iman Al- Bakri
- Department of Chemistry, Faculty of Science, Damascus University, Syrian Arab Republic
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2
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Chen J, Liu X, Ding Z, He Z, Jiang H, Zhu K, Li Y, Shi G. Multistage Filtration Desalination via Ion Self-Rejection Effect in Cation-Controlled Graphene Oxide Membrane under 1 Bar Operating Pressure. NANO LETTERS 2023. [PMID: 37976466 DOI: 10.1021/acs.nanolett.3c03105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
By building a thin graphene oxide membrane with Na+ self-rejection ability, high permeability, and multistage filtration strategy, we obtained fresh water from a saline solution under 1 bar of operating pressure. After five and 11 cycles of the multistage filtration, the Na+ concentration decreased from 0.6 to 0.123 mol/L (below physiological concentration) and 0.015 mol/L (fresh water), respectively. In comparison with the performance of commercial reverse osmosis membranes, energy consumption was only 10% and water flux was higher by a factor of 10. Interestingly, the energy consumption of this multistage filtration strategy is close to the theoretical lowest energy consumption. Theoretical calculations showed that such Na+ self-rejection is attributed to the lower transportation rate of the Na+ than that of water within the graphene oxide membrane for the hydrated cation-π interaction. Our findings present a viable desalination strategy for graphene-based membranes and improve the mechanistic understanding of water/ion transportation behaviors in confined spaces.
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Affiliation(s)
- Junjie Chen
- Shanghai Applied Radiation Institute, State Key Lab. Advanced Special Steel, Shanghai University, Shanghai 200444, China
| | - Xing Liu
- Shanghai Applied Radiation Institute, State Key Lab. Advanced Special Steel, Shanghai University, Shanghai 200444, China
| | - Zhoule Ding
- Shanghai Applied Radiation Institute, State Key Lab. Advanced Special Steel, Shanghai University, Shanghai 200444, China
| | - Zhenglin He
- Shanghai Applied Radiation Institute, State Key Lab. Advanced Special Steel, Shanghai University, Shanghai 200444, China
| | - Huixiong Jiang
- Shanghai Applied Radiation Institute, State Key Lab. Advanced Special Steel, Shanghai University, Shanghai 200444, China
| | - Kaiyuan Zhu
- Shanghai Applied Radiation Institute, State Key Lab. Advanced Special Steel, Shanghai University, Shanghai 200444, China
- Department of Physics, East China University of Science and Technology, Shanghai 200237, China
| | - Yunzhang Li
- Shanghai Applied Radiation Institute, State Key Lab. Advanced Special Steel, Shanghai University, Shanghai 200444, China
| | - Guosheng Shi
- Shanghai Applied Radiation Institute, State Key Lab. Advanced Special Steel, Shanghai University, Shanghai 200444, China
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Nagendraprasad G, Adupa V, Anki Reddy K, Das C, Karan S. Semiaromatic Polyamide-Based Membrane in Forward Osmosis: Molecular Insights. J Phys Chem B 2023. [PMID: 37490347 DOI: 10.1021/acs.jpcb.3c01922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2023]
Abstract
Despite the increased interest in forward osmosis (FO) in recent years, the technology's advancement in commercial and industrial applications has been hampered by the absence of suitable FO membranes and ideal draw solutes, which demands the exploration of new membranes and novel draw solutes targeted for some specific applications. In this context, we considered a semiaromatic polyamide (SAPA) for an application where monovalent salt can be permeated but has high selectivity toward divalent salt and excellent water permeability. In this regard, we constructed an atomistic model for the membrane via a heuristic approach using an equilibrated mixture of hydrolyzed trimesoyl chloride and piperazine monomers and performed nonequilibrium molecular dynamics simulations on the SAPA membrane in the FO process to understand the structural properties and performance of the membrane at the atomistic level. We used pure water as the feed and Na2SO4 as the draw solution. It is observed that the SAPA membrane shows excellent water permeability and no reverse draw solute flux. To further test the dynamics of salt ions inside the membranes, we performed two distinct equilibrium simulations on systems consisting of either monovalent salt, such as NaCl, or divalent salt, such as Na2SO4. The atomistic details of the interactions between the functional groups of the membrane and salt ions provided in this work can inspire further experiments on SAPA membranes in the context of separation of monovalent and divalent salts, which have applications in the treatment of textile industry wastewater.
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Affiliation(s)
- Gunolla Nagendraprasad
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Vasista Adupa
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - K Anki Reddy
- Department of Chemical Engineering, Indian Institute of Technology Tirupati, Tirupati, Andhra Pradesh 517506, India
| | - Chandan Das
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Santanu Karan
- Membrane Science and Separation Technology Division, CSIR-Central Salt and Marine Chemicals Research Institute, G.B. Marg, Bhavnagar, Gujarat 364002, India
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Liu J, Qin X, Feng X, Li F, Liang J, Hu D. Additive-optimized micro-structure in cellulose acetate butyrate-based reverse osmosis membrane for desalination. CHEMOSPHERE 2023; 327:138512. [PMID: 36972876 DOI: 10.1016/j.chemosphere.2023.138512] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 03/23/2023] [Accepted: 03/24/2023] [Indexed: 06/18/2023]
Abstract
Progress toward the high water flux of cellulose acetate butyrate (CAB)-based reverse osmosis (RO) membrane is a bottleneck for desalination and mitigation of fresh water shortage. Here, we develop an "optimization of formulation-induced structure" strategy using acetone (solvent), triethyl phosphate (pore-inducing agent), glycerin and n-propanol (boosters), which achieves a state-of-the-art salt rejection of 97.1% and permeate flux of 8.73 L m-2·h-1, ranking top among CAB-based RO membrane. Compared with reported literatures, it represents high separation performance for different concentrations (20-100 mg L-1) of Rhodamine B and Congo red, different ion types (NaCl and MgCl2), different time (600 min), and resistance to feed pressure changes. The key is the appropriate viscosity of the casting solution (995.52 mPa s), the synergy between the components and additives, contributing to the formation of "jellyfish"-like microscopic pore structure with the lowest surface roughness (Ra = 16.3) and good hydrophilicity. The proposed correlation mechanism between additive-optimized micro-structure and desalination provides a promising prospect for CAB-based RO membrane.
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Affiliation(s)
- Jingjing Liu
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, and School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China.
| | - Xiang Qin
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, and School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China.
| | - Xiaoping Feng
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, and School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China.
| | - Fengming Li
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, and School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China.
| | - Jun Liang
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, and School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China.
| | - Dongying Hu
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, and School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China.
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Shami R, Sabir A, Iqbal SS, Gull N, Zohra R, Khan SM. Synergistic effect of GO/ZnO loading on the performance of cellulose acetate/chitosan blended reverse osmosis membranes for NOM rejection. Heliyon 2023; 9:e13736. [PMID: 36873556 PMCID: PMC9976315 DOI: 10.1016/j.heliyon.2023.e13736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 02/09/2023] [Accepted: 02/09/2023] [Indexed: 02/17/2023] Open
Abstract
Declining freshwater resources along with their pollution are threatening the life existence on earth. To meet the freshwater demand, one of the most appropriate and possible ways which has been adopted all over the world is to reuse wastewater by removing its impurities. Among many water pollutants, natural organic matter (NOM) is found to be responsible as major precursor for the formation of other pollutants. Removal of NOM from wastewater is being done by using membrane filtration systems incorporated with certain nanofillers to increase membranes efficiency and permeability. In this study, novel nanocomposite reverse osmosis (RO) membranes were prepared using cellulose acetate and chitosan in N,N-Dimethyl formamide. Graphene oxide (GO) nanosheets and zinc oxide (ZnO) in different concentration were loaded to modify the membranes for tuning their RO performance. The confirmation of the functional groups is demonstrated by Fourier transform infrared spectroscopy which revealed the specific peaks indicating the formation of the nano-composite membranes. The surface morphology was studied by scanning electronic microscopy which shows a gradual transformation of the membrane surface from voids-free to macro-voids filled surface up to threshold concentration of GO and ZnO. The thermal properties of GO based membranes were analyzed using thermogravimetric analysis and differential scanning calorimetry. The uniform interaction of the GO and ZnO with polymers induced the remarkable thermal properties of the synthesized membranes. Permeate flux and contact angle measurements were considered to estimate their water content (96%) capacity and NOM rejection (96%) using 0.1 ppm humic acid solution. The permeate flux, NOM rejection and the water content changed directly with GO and inversely with ZnO wt% in the membranes up to GO5 (GO:0.14: ZnO:0.03) whereas the contact angle exhibited the inverse relationship with GO and ZnO concentration in casting solution of the synthesized membranes. Hence it can be concluded that prepared RO membranes are suitable for NOM rejection and recommended for water treatment.
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Affiliation(s)
- Rizwana Shami
- Institute of Polymer and Textile Engineering, University of the Punjab, Lahore, 54590, Pakistan.,Department of Chemistry, Forman Christian College University, Lahore, Pakistan
| | - Aneela Sabir
- Institute of Polymer and Textile Engineering, University of the Punjab, Lahore, 54590, Pakistan
| | - Sadia Sagar Iqbal
- Department of Physics, Fatima Jinnah Women University, Rawalpindi, Pakistan
| | - Nafisa Gull
- Institute of Polymer and Textile Engineering, University of the Punjab, Lahore, 54590, Pakistan
| | - Rubab Zohra
- Department of Chemistry, Forman Christian College University, Lahore, Pakistan
| | - Shahzad Maqsood Khan
- Institute of Polymer and Textile Engineering, University of the Punjab, Lahore, 54590, Pakistan
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Research Progress of Water Treatment Technology Based on Nanofiber Membranes. Polymers (Basel) 2023; 15:polym15030741. [PMID: 36772042 PMCID: PMC9920505 DOI: 10.3390/polym15030741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 01/25/2023] [Accepted: 01/30/2023] [Indexed: 02/04/2023] Open
Abstract
In the field of water purification, membrane separation technology plays a significant role. Electrospinning has emerged as a primary method to produce nanofiber membranes due to its straightforward, low cost, functional diversity, and process controllability. It is possible to flexibly control the structural characteristics of electrospun nanofiber membranes as well as carry out various membrane material combinations to make full use of their various properties, including high porosity, high selectivity, and microporous permeability to obtain high-performance water treatment membranes. These water separation membranes can satisfy the fast and efficient purification requirements in different water purification applications due to their high filtration efficiency. The current research on water treatment membranes is still focused on creating high-permeability membranes with outstanding selectivity, remarkable antifouling performance, superior physical and chemical performance, and long-term stability. This paper reviewed the preparation methods and properties of electrospun nanofiber membranes for water treatment in various fields, including microfiltration, ultrafiltration, nanofiltration, reverse osmosis, forward osmosis, and other special applications. Lastly, various antifouling technologies and research progress of water treatment membranes were discussed, and the future development direction of electrospun nanofiber membranes for water treatment was also presented.
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7
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Wardhono EY, Pinem MP, Susilo S, Siom BJ, Sudrajad A, Pramono A, Meliana Y, Guénin E. Modification of Physio-Mechanical Properties of Chitosan-Based Films via Physical Treatment Approach. Polymers (Basel) 2022; 14:polym14235216. [PMID: 36501610 PMCID: PMC9740446 DOI: 10.3390/polym14235216] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/18/2022] [Accepted: 11/27/2022] [Indexed: 12/05/2022] Open
Abstract
The premise of this work is the modification of the properties of chitosan-based film for possible use in food packaging applications. The biofilm was prepared via thermal and mechanical treatment through blending polymers with chitosan using Polyvinyl Alcohol (PVA) and loading different types of chemical agents, i.e., citric acid (CA), succinic acid (SA), and tetraethoxysilane (TEOS). The modification was carried out under high-speed homogenization at elevated temperature to induce physical cross-linkage of chitosan polymer chains without a catalyst. The findings showed that PVA improved the chitosan films' Tensile strength (TS) and elongation at break (Eb). The presence of chemicals caused an increase in the film strength for all samples prepared, in which a 5% w/w of chemical in the optimum composition CS/PVA (75/25) provided the maximum strength, namely, 33.9 MPa, 44.0 MPa, and 41.9 MPa, for CA-5, SA-5, and TEOS-5, respectively. The chemical agents also increased the water contact angles for all tested films, indicating that they promoted hydrophobicity. The chemical structure analysis showed that, by incorporating three types of chemical agents into the CS/PVA blend films, no additional spectral bands were found, indicating that no covalent bonds were formed. The thermal properties showed enhancement in melting peak and degradation temperature of the blend films, compared to those without chemical agents at the optimum composition. The X-ray diffraction patterns exhibited that PVA led to an increasing crystallization tendency in the blend films. The morphological observation proved that no irregularities were detected in CS/PVA blend films, representing high compatibility with both polymers.
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Affiliation(s)
- Endarto Yudo Wardhono
- Faculty of Chemical Engineering, University of Sultan Ageng Tirtayasa, Jl. Jendral Sudirman km 3, Cilegon 42435, Banten, Indonesia
- Laboratorium Polimer dan Komposit, Centre of Excellent, University of Sultan Ageng Tirtayasa, Jl. Jendral Sudirman km 3, Cilegon 42435, Banten, Indonesia
- Correspondence: ; Tel.: +62-254-395-502
| | - Mekro Permana Pinem
- Laboratorium Polimer dan Komposit, Centre of Excellent, University of Sultan Ageng Tirtayasa, Jl. Jendral Sudirman km 3, Cilegon 42435, Banten, Indonesia
- Faculty of Mechanical Engineering, University of Sultan Ageng Tirtayasa, Jl. Jendral Sudirman km 3, Cilegon 42435, Banten, Indonesia
| | - Sidik Susilo
- Faculty of Mechanical Engineering, University of Sultan Ageng Tirtayasa, Jl. Jendral Sudirman km 3, Cilegon 42435, Banten, Indonesia
| | - Bintang Junita Siom
- Faculty of Chemical Engineering, University of Sultan Ageng Tirtayasa, Jl. Jendral Sudirman km 3, Cilegon 42435, Banten, Indonesia
| | - Agung Sudrajad
- Faculty of Mechanical Engineering, University of Sultan Ageng Tirtayasa, Jl. Jendral Sudirman km 3, Cilegon 42435, Banten, Indonesia
| | - Agus Pramono
- Faculty of Metallurgical Engineering, University of Sultan Ageng Tirtayasa, Jl. Jendral Sudirman km 3, Cilegon 42435, Banten, Indonesia
| | - Yenny Meliana
- Research Center for Chemistry, National Research and Innovation Agency, BRIN, Kawasan Puspiptek, Serpong, South Tangerang 15314, Banten, Indonesia
| | - Erwann Guénin
- Integrated Transformations of Renewable Matter Laboratory (EA TIMR 4297 UTC-ESCOM), Université de Technologie de Compiègne, rue du Dr Schweitzer, 60200 Compiègne, France
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Butylskii DY, Troitskiy VA, Ponomar MA, Moroz IA, Sabbatovskiy KG, Sharafan MV. Efficient Anion-Exchange Membranes with Anti-Scaling Properties Obtained by Surface Modification of Commercial Membranes Using a Polyquaternium-22. MEMBRANES 2022; 12:membranes12111065. [PMID: 36363620 PMCID: PMC9693783 DOI: 10.3390/membranes12111065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/12/2022] [Accepted: 10/26/2022] [Indexed: 05/12/2023]
Abstract
Anion-exchange membranes modified with a polyquaternium-22 (PQ-22) polymer were studied for their use in electrodialysis. The use of PQ-22 for modification makes it possible to "replace" weakly basic amino groups on the membrane surface with quaternary amino groups. It was found that the content of quaternary amino groups in PQ-22 is higher than the content of carboxyl groups, which is the reason for the effectiveness of this polymer even when modifying Ralex AHM-PES membranes that initially contain only quaternary amino groups. In the case of membranes containing weakly basic amino groups, the PQ-22 polymer modification efficiency is even higher. The surface charge of the modified MA-41P membrane increased, while the limiting current density on the current-voltage curves increased by more than 1.5 times and the plateau length decreased by 2.5 times. These and other characteristics indicate that the rate of water splitting decreased and the electroconvective mixing at the membrane surface intensified, which was confirmed by direct visualization of vortex structures. Increasing the surface charge of the commercial MA-41P anion-exchange membrane, reducing the rate of water splitting, and enhancing electroconvection leads to mitigated scaling on its surface during electrodialysis.
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Affiliation(s)
- Dmitrii Y. Butylskii
- Membrane Institute, Kuban State University, 149 Stavropolskaya St., 350040 Krasnodar, Russia
- Correspondence:
| | - Vasiliy A. Troitskiy
- Membrane Institute, Kuban State University, 149 Stavropolskaya St., 350040 Krasnodar, Russia
| | - Maria A. Ponomar
- Membrane Institute, Kuban State University, 149 Stavropolskaya St., 350040 Krasnodar, Russia
| | - Ilya A. Moroz
- Membrane Institute, Kuban State University, 149 Stavropolskaya St., 350040 Krasnodar, Russia
| | - Konstantin G. Sabbatovskiy
- Frumkin Intstitute of Physical Chemistry and Electrochemistry RAS, 31 Leninsky Prospekt, 119071 Moscow, Russia
| | - Mikhail V. Sharafan
- Membrane Institute, Kuban State University, 149 Stavropolskaya St., 350040 Krasnodar, Russia
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Armendáriz-Ontiveros MM, Villegas-Peralta Y, Madueño-Moreno JE, Álvarez-Sánchez J, Dévora-Isiordia GE, Sánchez-Duarte RG, Madera-Santana TJ. Modification of Thin Film Composite Membrane by Chitosan-Silver Particles to Improve Desalination and Anti-Biofouling Performance. MEMBRANES 2022; 12:membranes12090851. [PMID: 36135870 PMCID: PMC9505310 DOI: 10.3390/membranes12090851] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 08/24/2022] [Accepted: 08/27/2022] [Indexed: 05/26/2023]
Abstract
Reverse osmosis (RO) desalination is a technology that is commonly used to mitigate water scarcity problems; one of its disadvantages is the bio-fouling of the membranes used, which reduces its performance. In order to minimize this problem, this study prepared modified thin film composite (TFC) membranes by the incorporation of chitosan-silver particles (CS-Ag) of different molecular weights, and evaluated them in terms of their anti-biofouling and desalination performances. The CS-Ag were obtained using ionotropic gelation, and were characterized by Fourier transform infrared spectroscopy (FTIR), high-resolution scanning electron microscopy (HR-SEM), energy-dispersive X-ray spectroscopy (EDX), thermogravimetric analysis (TGA) and dynamic light scattering (DLS). The modified membranes were synthetized by the incorporation of the CS-Ag using the interfacial polymerization method. The membranes (MCS-Ag) were characterized by Fourier transform infrared spectroscopy (FTIR), atomic force microscopy (AFM) and contact angle. Bactericidal tests by total cell count were performed using Bacillus halotolerans MCC1, and anti-adhesion properties were confirmed through biofilm cake layer thickness and total organic carbon (%). The desalination performance was defined by permeate flux, hydraulic resistance, salt rejection and salt permeance by using 2000 and 5000 mg L-1 of NaCl. The MCS-Ag-L presented superior permeate flux and salt rejection (63.3% and 1% higher, respectively), as well as higher bactericidal properties (76% less in total cell count) and anti-adhesion capacity (biofilm thickness layer 60% and total organic carbon 75% less, compared with the unmodified membrane). The highest hydraulic resistance value was for MCS-Ag-M. In conclusion, the molecular weight of CS-Ag significantly influences the desalination and the antimicrobial performances of the membranes; as the molecular weight decreases, the membranes' performances increase. This study shows a possible alternative for increasing membrane useful life in the desalination process.
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Affiliation(s)
| | - Yedidia Villegas-Peralta
- Departamento de Ciencias del Agua y Medio Ambiente, Instituto Tecnológico de Sonora, 5 de Febrero 818 Sur, Ciudad Obregón 85000, Mexico
| | - Julia Elizabeth Madueño-Moreno
- Departamento de Ciencias del Agua y Medio Ambiente, Instituto Tecnológico de Sonora, 5 de Febrero 818 Sur, Ciudad Obregón 85000, Mexico
| | - Jesús Álvarez-Sánchez
- Departamento de Ciencias del Agua y Medio Ambiente, Instituto Tecnológico de Sonora, 5 de Febrero 818 Sur, Ciudad Obregón 85000, Mexico
| | - German Eduardo Dévora-Isiordia
- Departamento de Ciencias del Agua y Medio Ambiente, Instituto Tecnológico de Sonora, 5 de Febrero 818 Sur, Ciudad Obregón 85000, Mexico
| | - Reyna G. Sánchez-Duarte
- Departamento de Ciencias del Agua y Medio Ambiente, Instituto Tecnológico de Sonora, 5 de Febrero 818 Sur, Ciudad Obregón 85000, Mexico
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10
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Kinetic and Thermodynamic Characteristics of Fluoride Ions Adsorption from Solution onto the Aluminum Oxide Nanolayer of a Bacterial Cellulose-Based Composite Material. Polymers (Basel) 2021; 13:polym13193421. [PMID: 34641236 PMCID: PMC8512848 DOI: 10.3390/polym13193421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 09/24/2021] [Accepted: 09/28/2021] [Indexed: 11/17/2022] Open
Abstract
The described research examined the adsorption of fluoride ions from solution immobilized onto an aluminum oxide-coated bacterial cellulose-based composite material in which aluminum oxide had been deposited using ALD technology. The kinetic regularities of the adsorption of fluoride ions from the solution as well as the mechanism of the processes were analyzed. The established equations show that the dynamics of adsorption correspond to first-order kinetics. Based on the Langmuir adsorption isotherms, we defined the adsorption equilibrium constants, parameter maximum adsorption, and change in Gibbs free energy. It is shown that, with increasing temperature, an increase in the reaction rate is constant, both forward and reverse. This testifies to the activated character of adsorption of the first fluoride on the surface of the sorbent based on bacterial cellulose modified with an alumina nanolayer. The activation energy of the desorption process is higher than the activation energy of the adsorption process, which characterizes the adsorption as ionic. The negative value of entropy indicates that in the course of sorption, an adsorption complex "aluminum-fluorine" is formed, where the system is more ordered than the initial system in which fluorine ions are in solution. The limiting stages of the process are revealed. The high sorption capacity of the resulting bacterial cellulose-based composite material obtained by means of biosynthesis through cultivation of the bacterium Komagataeibacter sucrofermentans B-11267 was demonstrated.
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11
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Butylskii DY, Pismenskaya N, Apel PY, Sabbatovskiy K, Nikonenko V. Highly selective separation of singly charged cations by countercurrent electromigration with a track-etched membrane. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119449] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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12
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Alayande AB, Kang Y, Jang J, Jee H, Lee YG, Kim IS, Yang E. Antiviral Nanomaterials for Designing Mixed Matrix Membranes. MEMBRANES 2021; 11:membranes11070458. [PMID: 34206245 PMCID: PMC8303748 DOI: 10.3390/membranes11070458] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 06/19/2021] [Accepted: 06/20/2021] [Indexed: 01/02/2023]
Abstract
Membranes are helpful tools to prevent airborne and waterborne pathogenic microorganisms, including viruses and bacteria. A membrane filter can physically separate pathogens from air or water. Moreover, incorporating antiviral and antibacterial nanoparticles into the matrix of membrane filters can render composite structures capable of killing pathogenic viruses and bacteria. Such membranes incorporated with antiviral and antibacterial nanoparticles have a great potential for being applied in various application scenarios. Therefore, in this perspective article, we attempt to explore the fundamental mechanisms and recent progress of designing antiviral membrane filters, challenges to be addressed, and outlook.
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Affiliation(s)
| | - Yesol Kang
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Korea; (Y.K.); (J.J.); (I.S.K.)
| | - Jaewon Jang
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Korea; (Y.K.); (J.J.); (I.S.K.)
| | - Hobin Jee
- Department of Marine Environmental Engineering, Gyeongsang National University, Tongyeong-si 53064, Korea;
| | - Yong-Gu Lee
- Department of Environmental Engineering, College of Engineering, Kangwon National University, Chuncheon-si 24341, Korea;
| | - In S. Kim
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Korea; (Y.K.); (J.J.); (I.S.K.)
| | - Euntae Yang
- Department of Marine Environmental Engineering, Gyeongsang National University, Tongyeong-si 53064, Korea;
- Correspondence:
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