1
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El-Kholy SA. Environmentally Benign Freeze-dried Biopolymer-Based Cryogels for Textile Wastewater Treatments: A review. Int J Biol Macromol 2024; 276:133931. [PMID: 39032896 DOI: 10.1016/j.ijbiomac.2024.133931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Revised: 06/04/2024] [Accepted: 07/15/2024] [Indexed: 07/23/2024]
Abstract
Motivated by sustainability and environmental protection, great efforts have been paid towards water purification and attaining complete decolorization and detoxification of polluted water effluent. Textile effluent, the main participant in water pollution, is a complicated mixture of toxic pollutants which seriously impact human health and the entire ecosystem. Developing effective materials for potential removal of the water contaminants is urgent. Recently, cryogels have been applied in wastewater sectors due to their unique physiochemical attributes(e.g. high surface area, lightweight, porosity, swelling-deswelling, and high permeability). These features robustly affected the cryogel's performance, as adsorbent material, particularly in wastewater sectors. This review serves as a detailed reference to the cryogels derived from biopolymers and applied as adsorbents for the purification of textile drainage. We displayed an overview of: the existing contaminants in textile effluents (dyes and heavy metals), their sources, and toxicity; advantages and disadvantages of the most common treatment techniques (biodegradation, advanced chemical oxidation, membrane filtration, coagulation/flocculation, adsorption). A simple background about cryogels (definition, cryogelation technique, significant features as adsorbents, and the adsorption mechanisms) is also discussed. Finally, the bio-based cryogels dependent on biopolymers such as chitosan, xanthan, cellulose, PVA, and PVP, are fully discussed with evaluating their maximum adsorption capacity.
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Affiliation(s)
- Samar A El-Kholy
- Chemistry Department, Faculty of Science, Menoufia University, Shebin El Koom 32511, Egypt.
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2
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Behrendt F, Gottschaldt M, Schubert US. Surface functionalized cryogels - characterization methods, recent progress in preparation and application. MATERIALS HORIZONS 2024. [PMID: 39021096 DOI: 10.1039/d4mh00315b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/20/2024]
Abstract
Cryogels are polymeric materials with a sponge-like microstructure and have attracted significant attention in recent decades. Research has focused on their composition, fabrication techniques, characterization methods as well as potential or existing fields of applications. The use of functional precursors or functionalizing ligands enables the preparation of cryogels with desired properties such as biocompatibility or responsivity. They can also exhibit adsorptive properties or can be used for catalytical purposes. Although a very brief overview about several functional (macro-)monomers and functionalizing ligands has been provided by previous reviewers for certain cryogel applications, so far there has been no particular focus on the evaluation of the functionalization success and the characterization methods used. This review will provide a comprehensive overview of different characterization methods most recently used for the evaluation of cryogel functionalization. Furthermore, new functional (macro-)monomers and subsequent cryogel functionalization strategies are discussed, based on synthetic polymers, biopolymers and a combination of both. This review highlights the importance of the functionalization aspect in cryogel research in order to produce materials with tailored properties for certain applications.
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Affiliation(s)
- Florian Behrendt
- Laboratory of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany.
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
- Cluster of Excellence Balance of the Microverse, Friedrich Schiller University Jena, Jena, Germany
| | - Michael Gottschaldt
- Laboratory of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany.
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Ulrich S Schubert
- Laboratory of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany.
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
- Cluster of Excellence Balance of the Microverse, Friedrich Schiller University Jena, Jena, Germany
- Abbe Center of Photonics (ACP), Albert-Einstein-Straße 6, 07743 Jena, Germany
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3
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Gerrits L, Bakker B, Hendriks LD, Engels S, Hammink R, Kouwer PHJ. Tailoring of Physical Properties in Macroporous Poly(isocyanopeptide) Cryogels. Biomacromolecules 2024; 25:3464-3474. [PMID: 38743442 PMCID: PMC11170948 DOI: 10.1021/acs.biomac.4c00086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Revised: 05/01/2024] [Accepted: 05/02/2024] [Indexed: 05/16/2024]
Abstract
Over the years, synthetic hydrogels have proven remarkably useful as cell culture matrixes to elucidate the role of the extracellular matrix (ECM) on cell behavior. Yet, their lack of interconnected macropores undermines the widespread use of hydrogels in biomedical applications. To overcome this limitation, cryogels, a class of macroporous hydrogels, are rapidly emerging. Here, we introduce a new, highly elastic, and tunable synthetic cryogel, based on poly(isocyanopeptides) (PIC). Introduction of methacrylate groups on PIC facilitated cryopolymerization through free-radical polymerization and afforded cryogels with an interconnected macroporous structure. We investigated which cryogelation parameters can be used to tune the architectural and mechanical properties of the PIC cryogels by systematically altering cryopolymerization temperature, polymer concentration, and polymer molecular weight. We show that for decreasing cryopolymerization temperatures, there is a correlation between cryogel pore size and stiffness. More importantly, we demonstrate that by simply varying the polymer concentration, we can selectively tune the compressive strength of PIC cryogels without affecting their architecture. This unique feature is highly useful for biomedical applications, as it facilitates decoupling of stiffness from other variables such as pore size. As such, PIC cryogels provide an interesting new biomaterial for scientists to unravel the role of the ECM in cellular functions.
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Affiliation(s)
- Lotte Gerrits
- Institute
for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
- Institute
for Chemical Immunology, 6525 GA Nijmegen ,Netherlands
| | - Bram Bakker
- Institute
for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
- Institute
for Chemical Immunology, 6525 GA Nijmegen ,Netherlands
| | - Lynn D. Hendriks
- Institute
for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
- Institute
for Chemical Immunology, 6525 GA Nijmegen ,Netherlands
| | - Sjoerd Engels
- Institute
for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
- Institute
for Chemical Immunology, 6525 GA Nijmegen ,Netherlands
| | - Roel Hammink
- Department
of Medical BioSciences,Radboudumc, Geert Grooteplein 26, 6525 GA Nijmegen, The Netherlands
- Division
of Immunotherapy, Oncode Institute, Radboud
University Medical Center, 6525 GA Nijmegen ,Netherlands
| | - Paul H. J. Kouwer
- Institute
for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
- Institute
for Chemical Immunology, 6525 GA Nijmegen ,Netherlands
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4
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You Z, Lorente A, Marlina D, Haag R, Wagner O. Biomaterial-based sponge for efficient and environmentally sound removal of bacteria from water. Sci Rep 2024; 14:12496. [PMID: 38821995 PMCID: PMC11143301 DOI: 10.1038/s41598-024-61483-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 05/06/2024] [Indexed: 06/02/2024] Open
Abstract
Designing materials capable of disinfecting water without releasing harmful by-products is an ongoing challenge. Here, we report a novel polycationic sponge material synthesized from chitosan derivatives and cellulose fibers, exhibiting antibacterial properties. The design of such material is based on three key principles. First, the formation of a highly porous structure through cryogelation for an extensive surface area. Second, the incorporation of cationic quaternary ammonium moieties onto chitosan to enhance bacterial adsorption and antibacterial activity. Lastly, the reinforcement of mechanical properties through integration of cellulose fibers. The presented sponge materials exhibit up to a 4-log (99.99%) reduction within 6 h against both gram-positive B. subtilis and gram-negative E. coli. Notably, QCHI90/Cell, with the highest surface charge, exhibits a 2-4.5 log reduction within 1 h of incubation time. The eco-friendly synthesis from water and readily available biomaterials, along with cost-effectiveness and simplicity, underscores its versatility and feasibility of upscaling. Together with its outstanding antibacterial activity, this macroporous biomaterial emerges as a promising candidate for water disinfection applications.
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Affiliation(s)
- Zewang You
- Institute of Chemistry and Biochemistry, Free University of Berlin, Takustr. 3, 14195, Berlin, Germany.
| | - Alejandro Lorente
- Institute of Chemistry and Biochemistry, Free University of Berlin, Takustr. 3, 14195, Berlin, Germany
| | - Dini Marlina
- Institute of Chemistry and Biochemistry, Free University of Berlin, Takustr. 3, 14195, Berlin, Germany
| | - Rainer Haag
- Institute of Chemistry and Biochemistry, Free University of Berlin, Takustr. 3, 14195, Berlin, Germany
| | - Olaf Wagner
- Institute of Chemistry and Biochemistry, Free University of Berlin, Takustr. 3, 14195, Berlin, Germany.
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5
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Engel N, Hoffmann T, Behrendt F, Liebing P, Weber C, Gottschaldt M, Schubert US. Cryogels Based on Poly(2-oxazoline)s through Development of Bi- and Trifunctional Cross-Linkers Incorporating End Groups with Adjustable Stability. Macromolecules 2024; 57:2915-2927. [PMID: 38560346 PMCID: PMC10977347 DOI: 10.1021/acs.macromol.3c02030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 02/19/2024] [Accepted: 02/22/2024] [Indexed: 04/04/2024]
Abstract
1,4-Bis(iodomethyl)benzene and 1,3,5-tris(iodomethyl)benzene were used as initiators for the cationic ring-opening polymerization (CROP) of 2-ethyl-2-oxazoline (EtOx) and its copolymerization with tert-butyl (3-(4,5-dihydrooxazol-2-yl)propyl)carbamate (BocOx) or methyl 3-(4,5-dihydrooxazol-2-yl)propanoate (MestOx). Kinetic studies confirmed the applicability of these initiators. Termination with suitable nucleophiles resulted in two- and three-armed cross-linkers featuring acrylate, methacrylate, piperazine-acrylamide, and piperazine-methacrylamide as polymerizable ω-end groups. Matrix-assisted laser desorption/ionization mass spectrometry and nuclear magnetic resonance (NMR) spectroscopy confirmed the successful attachment of the respective ω-end groups at all initiation sites for every prepared cross-linkers. Except for acrylate, each ω-end group remained stable during deprotection of BocOx containing cross-linkers. The cryogels were prepared using EtOx-based cross-linkers, as confirmed by solid-state NMR spectroscopy, scanning electron microscopy, and thermogravimetric analysis. Stability tests revealed a complete dissolution of the acrylate-containing gels at pH = 14, whereas the piperazine-acrylamide-based cryogels featured excellent hydrolytic stability.
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Affiliation(s)
- Nora Engel
- Laboratory
of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich Schiller University at Jena, Humboldtstraße 10, 07743 Jena, Germany
- Jena
Center for Soft Matter (JCSM), Friedrich
Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Tim Hoffmann
- Laboratory
of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich Schiller University at Jena, Humboldtstraße 10, 07743 Jena, Germany
- Jena
Center for Soft Matter (JCSM), Friedrich
Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Florian Behrendt
- Laboratory
of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich Schiller University at Jena, Humboldtstraße 10, 07743 Jena, Germany
- Jena
Center for Soft Matter (JCSM), Friedrich
Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Phil Liebing
- Institute
of Inorganic and Analytical Chemistry (IAAC), Friedrich Schiller University at Jena, Humboldtstraße 8, 07743 Jena, Germany
| | - Christine Weber
- Laboratory
of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich Schiller University at Jena, Humboldtstraße 10, 07743 Jena, Germany
- Jena
Center for Soft Matter (JCSM), Friedrich
Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Michael Gottschaldt
- Laboratory
of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich Schiller University at Jena, Humboldtstraße 10, 07743 Jena, Germany
- Jena
Center for Soft Matter (JCSM), Friedrich
Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Ulrich S. Schubert
- Laboratory
of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich Schiller University at Jena, Humboldtstraße 10, 07743 Jena, Germany
- Jena
Center for Soft Matter (JCSM), Friedrich
Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
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6
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Proietto Salanitri G, Luzzi E, Caretti D, Mecca T, Carroccio SC, Scamporrino AA. How the Crosslinker Amount Influences the Final Properties of Hydroxyethyl Methacrylate Cryogels. Gels 2024; 10:163. [PMID: 38534581 DOI: 10.3390/gels10030163] [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: 01/23/2024] [Revised: 02/14/2024] [Accepted: 02/21/2024] [Indexed: 03/28/2024] Open
Abstract
The investigation of the mechanical, thermal, and adsorption properties of hydroxyethyl methacrylate (HEMA) cryogels as a function of a reactant ratio is herein reported to better address materials for specific applications. To this aim, cryogels have been synthesized using different monomer/crosslinker (N,N'-methylene-bisacrylamide-MBAA) ratios. The study of SEM images made it possible to identify the trend in the material's macroporosity. As would be expected, the average measured pore width decreased as the amount of MBAA increased while the number of pores grew. Swelling capacity ranges from 8.7 gW/ggel (grams of water per gram of gel) to 9.3 gW/ggel. These values are strictly connected with the pore's size and distribution, revealing that the water uptake for the most crosslinked sample is inferior to other samples. The equilibrium-adsorption capacity (Qe) towards the methylene violet (MV) was also assessed, revealing no remarkable differences after 24 h of a batch test. As expected, thermogravimetric analysis (TGA) also showed no significant changes in stability that ranged from a maximum weight loss temperature (T Max) of 420 °C to 425 °C, which increased as a function of crosslinker content. Conversely, compression strength measurements showed a notable difference of about 50% in modulus (Ec), moving from the higher to the lower HEMA/MBAA ratio. These new comparative results indicate how slight variations in the reactant's ratio can steadily improve the mechanical properties of the HEMA cryogel without affecting its adsorption efficiency. This can be helpful in the design of materials for water and energy purposes. Since swelling properties are needed in the case of biomedical applications, the HEMA/MBAA ratio should be tuned versus high values.
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Affiliation(s)
- Giuseppe Proietto Salanitri
- CNR-Institute for Polymers, Composites and Biomaterials, Via Paolo Gaifami 18, 95126 Catania, Italy
- Department of Industrial Chemistry "Toso Montanari", University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
| | - Enrica Luzzi
- Department of Chemical Engineering, Materials and Industrial Production, University of Naples Federico II, DICMaPI-P. le Tecchio 80, 80125 Naples, Italy
| | - Daniele Caretti
- Department of Industrial Chemistry "Toso Montanari", University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
| | | | - Sabrina C Carroccio
- CNR-Institute for Polymers, Composites and Biomaterials, Via Paolo Gaifami 18, 95126 Catania, Italy
| | - Andrea A Scamporrino
- CNR-Institute for Polymers, Composites and Biomaterials, Via Paolo Gaifami 18, 95126 Catania, Italy
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7
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Abuhatab S, Pal S, Roberts EPL, Trifkovic M. Electrochemical Regeneration of Highly Stable and Sustainable Cellulose/Graphene Adsorbent Saturated with Dissolved Organic Dye. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024. [PMID: 38316141 DOI: 10.1021/acs.langmuir.3c03265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
Electrochemical regeneration of adsorbents presents a cost-effective and environmentally friendly approach. Yet, its application to 3D structured adsorbents such as cellulose/graphene-based aerogels remains largely unexplored. This study introduces a method for producing these aerogels, highlighting their significant adsorption capacity for dissolved organic pollutants and resilience during electrochemical regeneration. By adjusting the ratio of hydrophobized cellulose nanofibers to graphene, the aerogels demonstrate a tunable adsorption capacity, ranging from 56 to 228 mg/g. Hydrophobization using oleic acid is vital for maintaining the aerogels' structural stability in water. Notably, the aerogels maintain structural integrity and efficiency over at least 18 electrochemical regeneration cycles, underscoring their potential for long-term environmental applications. The increase in adsorption capacity observed after regeneration cycles, approximately 10-20% by the fifth cycle, is attributed to electrochemical surface roughening and the creation of new adsorption sites. The tunability and durability of these aerogels offer a sustainable solution for adsorption with electrochemical regeneration technology.
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Affiliation(s)
- Saqr Abuhatab
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Dr. NW, Calgary, Alberta T2N 1N4, Canada
| | - Sucharita Pal
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Dr. NW, Calgary, Alberta T2N 1N4, Canada
| | - Edward P L Roberts
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Dr. NW, Calgary, Alberta T2N 1N4, Canada
| | - Milana Trifkovic
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Dr. NW, Calgary, Alberta T2N 1N4, Canada
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8
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Golikov A, Privar Y, Balatskiy D, Polyakova N, Bratskaya S. Extended Rate Constants Distribution (RCD) Model for Sorption in Heterogeneous Systems: 4. Kinetics of Metal Ions Sorption in the Presence of Complexing Agents-Application to Cu(II) Sorption on Polyethyleneimine Cryogel from Acetate and Tartrate Solutions. Int J Mol Sci 2023; 24:12385. [PMID: 37569760 PMCID: PMC10418622 DOI: 10.3390/ijms241512385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/30/2023] [Accepted: 07/31/2023] [Indexed: 08/13/2023] Open
Abstract
Here, we report a new version of the extended Rate Constants Distribution (RCD) model for metal ion sorption, which includes complex-formation equilibria. With the RCD-complex model, one can predict sorbent performance in the presence of complexing agents using data on metal ion sorption from ligand-free solutions and a set of coefficients for sorption rate constants of different ionic species. The RCD-complex model was applied to breakthrough curves of Cu(II) sorption from acetate and tartrate solutions on polyethyleneimine (PEI) monolith cryogel at different flow rates and ionic speciation. We have shown that, despite the lower stability of Cu(II)-acetate complex, at high flow rates, acetate has a more pronounced negative effect on sorption kinetics than tartrate. The RCD model was successfully used to predict the shape of the breakthrough curves at an arbitrary acetate concentration but failed to predict Cu(II) sorption from tartrate solutions in a broad range of ligand concentrations. Since a twofold increase in sorption capacity was observed at low tartrate concentrations, the latter fact was related to an alteration in the sorption mechanism of Cu(II)-ions, which depended on Cu(II) ionic speciation. The obtained results emphasize the importance of information about sorption kinetics of different ionic forms for the optimization of sorption filter performance in the presence of complexing agents.
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Affiliation(s)
| | | | | | | | - Svetlana Bratskaya
- Institute of Chemistry, Far Eastern Branch of the Russian Academy of Sciences, 159, Prospect 100-Letiya Vladivostoka, 690022 Vladivostok, Russia; (A.G.)
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9
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Tilwani YM, Lakra AK, Domdi L, Arul V. Preparation and functional characterization of the bio-composite film based on chitosan/polyvinyl alcohol blended with bacterial exopolysaccharide EPS MC-5 having antioxidant activities. Int J Biol Macromol 2023; 245:125496. [PMID: 37355066 DOI: 10.1016/j.ijbiomac.2023.125496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 06/15/2023] [Accepted: 06/19/2023] [Indexed: 06/26/2023]
Abstract
In this study, the plate casting method was successfully used to prepare biocomposite films containing EPS from probiotic Enterococcus faecium MC-5 in combination with PVA and chitosan. The findings demonstrated that EPS was uniformly distributed in the film matrices and significantly improved the physicochemical properties of the resulting composite films. The development of intermolecular connections between the polymers was detected by high tensile strength and low water vapour transmission rate. EPS plays an important role in limiting the passage of UV- and visible light radiations through the films. FT-IR analysis was used to determine the molecular compatibility between the functional groups of the blended films made up of chitosan-EPS and PVA-EPS. The TGA results showed that composite films have a significant degree of thermal stability. The presence of amorphous peaks in the composite film was confirmed by XRD analysis. The EPS blended films displayed a greater antioxidant property than the PVA and chitosan films, as determined by DPPH and hydroxyl radical scavenging activities. Interestingly, the EPS-derived films showed enhanced metal chelation activity and strong antibacterial properties against Listeria monocytogenes and Staphylococcus aureus. EPS-based composite films performed better than chitosan and PVA films in terms of degradation rate. The overall functional characteristics of the EPS blended films suggested that they could be used as a packaging material to replace or reduce the use of conventional petroleum-based packaging materials.
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Affiliation(s)
- Younus Mohd Tilwani
- Department of Biotechnology, School of Life Sciences, Pondicherry University, Puducherry Pin code: 605014, India
| | - Avinash Kant Lakra
- Department of Biotechnology, School of Life Sciences, Pondicherry University, Puducherry Pin code: 605014, India
| | - Latha Domdi
- Department of Biotechnology, School of Life Sciences, Pondicherry University, Puducherry Pin code: 605014, India
| | - Venkatesan Arul
- Department of Biotechnology, School of Life Sciences, Pondicherry University, Puducherry Pin code: 605014, India.
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10
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Dumitru MV, Sandu T, Miron A, Zaharia A, Radu IC, Gavrilă AM, Sârbu A, Iovu H, Chiriac AL, Iordache TV. Hybrid Cryogels with Superabsorbent Properties as Promising Materials for Penicillin G Retention. Gels 2023; 9:443. [PMID: 37367113 DOI: 10.3390/gels9060443] [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: 04/28/2023] [Revised: 05/19/2023] [Accepted: 05/23/2023] [Indexed: 06/28/2023] Open
Abstract
This present study describes the investigation of new promising hybrid cryogels able to retain high amounts of antibiotics, specifically penicillin G, using chitosan or chitosan-biocellulose blends along with a naturally occurring clay, i.e., kaolin. In order to evaluate and optimize the stability of cryogels, three types of chitosan were used in this study, as follows: (i) commercial chitosan; (ii) chitosan prepared in the laboratory from commercial chitin; and (iii) chitosan prepared in the laboratory from shrimp shells. Biocellulose and kaolin, previously functionalized with an organosilane, were also investigated in terms of their potential to improve the stability of cryogels during prolonged submergence under water. The organophilization and incorporation of the clay into the polymer matrix were confirmed by different characterization techniques (such as FTIR, TGA, SEM), while their stability in time underwater was investigated by swelling measurements. As final proof of their superabsorbent behavior, the cryogels were tested for antibiotic adsorption in batch experiments, in which case cryogels based on chitosan extracted from shrimp shells seem to exhibit excellent adsorption properties for penicillin G.
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Affiliation(s)
- Marinela Victoria Dumitru
- National Institute for Research & Development in Chemistry and Petrochemistry-ICECHIM, 202 Splaiul Independenței, 060021 Bucharest, Romania
| | - Teodor Sandu
- National Institute for Research & Development in Chemistry and Petrochemistry-ICECHIM, 202 Splaiul Independenței, 060021 Bucharest, Romania
| | - Andreea Miron
- National Institute for Research & Development in Chemistry and Petrochemistry-ICECHIM, 202 Splaiul Independenței, 060021 Bucharest, Romania
| | - Anamaria Zaharia
- National Institute for Research & Development in Chemistry and Petrochemistry-ICECHIM, 202 Splaiul Independenței, 060021 Bucharest, Romania
| | - Ionuț Cristian Radu
- Faculty of Chemical Engineering and Biotechnology, University POLITEHNICA of Bucharest, 1-7 Gheorghe Polizu Street, 011061 Bucharest, Romania
| | - Ana-Mihaela Gavrilă
- National Institute for Research & Development in Chemistry and Petrochemistry-ICECHIM, 202 Splaiul Independenței, 060021 Bucharest, Romania
| | - Andrei Sârbu
- National Institute for Research & Development in Chemistry and Petrochemistry-ICECHIM, 202 Splaiul Independenței, 060021 Bucharest, Romania
| | - Horia Iovu
- Faculty of Chemical Engineering and Biotechnology, University POLITEHNICA of Bucharest, 1-7 Gheorghe Polizu Street, 011061 Bucharest, Romania
| | - Anita-Laura Chiriac
- National Institute for Research & Development in Chemistry and Petrochemistry-ICECHIM, 202 Splaiul Independenței, 060021 Bucharest, Romania
| | - Tanța Verona Iordache
- National Institute for Research & Development in Chemistry and Petrochemistry-ICECHIM, 202 Splaiul Independenței, 060021 Bucharest, Romania
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11
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Bagdat S, Tokay F, Demirci S, Yilmaz S, Sahiner N. Removal of Cd(II), Co(II), Cr(III), Ni(II), Pb(II) and Zn(II) ions from wastewater using polyethyleneimine (PEI) cryogels. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 329:117002. [PMID: 36527951 DOI: 10.1016/j.jenvman.2022.117002] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 11/25/2022] [Accepted: 12/06/2022] [Indexed: 06/17/2023]
Abstract
The removal of the target analytes, Cd(II), Co(II), Cr(III), Ni(II), Pb(II), and Zn(II) from contaminated waters was achieved using super porous polyethyleneimine (PEI) cryogels as adsorbent. The optimum values of the sample pH and contact time were determined as 4.0 and 90 min, respectively, for the removal of the analytes. The adsorption capacities of the sorbent were between 19.88 and 24.39 mgg-1 from 10 mL of 50 mgL-1 target metal ion solutions. The sorption kinetics of metal ions were fitted with the pseudo-second-order model. The adsorption isotherms of the target analytes into PEI cryogel were well-fitted to the Langmuir isotherm model as expected from the material homogeneity. The selectivity of the PEI cryogel in the presence of Na+, Ca2+, Mg2+, NO3-, K+ and Cl- ions even at high concentrations was tested, and the tolerance limits were satisfactory enough, e.g., the adsorption of the target analytes was even not affected in the presence of 2000 mgL-1 Ca2+, K+, Na+, Cl- and 5000 mgL-1 NO3- ions. The PEI cryogels were successfully utilized in different industrial wastewater samples that were spiked with a known amount of analytes. The removal of the analytes from wastewater samples was in the following ranges 91.94-99.86% for Cd(II), 89.59-99.89% for Co(II), 80.35-99.76% for Cr(III), 92.02-99.84% for Ni(II), 83.28-99.86% for Pb(II), and 82.94-98.24% for Zn(II), respectively. The presented novel removal strategy offers a selective, efficient, and easy application for target metal ions from industrial wastewater samples.
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Affiliation(s)
- Sema Bagdat
- Balıkesir University, Faculty of Science, Chemistry Department, 10145, Balıkesir, Turkey
| | - Feyzullah Tokay
- Balıkesir University, Faculty of Science, Chemistry Department, 10145, Balıkesir, Turkey
| | - Sahin Demirci
- Canakkale Onsekiz Mart University, Faculty of Science, Department of Chemistry, Terzioglu Campus, Canakkale, 17100, Turkey; Nanoscience and Technology Research and Application Center, Canakkale Onsekiz Mart University Terzioglu Campus, 17100, Canakkale, Turkey
| | - Selehattin Yilmaz
- Canakkale Onsekiz Mart University, Faculty of Science, Department of Chemistry, Terzioglu Campus, Canakkale, 17100, Turkey
| | - Nurettin Sahiner
- Canakkale Onsekiz Mart University, Faculty of Science, Department of Chemistry, Terzioglu Campus, Canakkale, 17100, Turkey; Nanoscience and Technology Research and Application Center, Canakkale Onsekiz Mart University Terzioglu Campus, 17100, Canakkale, Turkey; Department of Chemical and Biomolecular Engineering, University of South Florida, Tampa, FL, 33620, USA.
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12
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Özbek MA, Bereli N, Özgür E, Denizli A. Human serum albumin depletion based on dye ligand affinity chromatography via magnetic microcryogels. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2023; 34:449-462. [PMID: 36123323 DOI: 10.1080/09205063.2022.2127142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
One of the primary purposes of proteomic studies is to analyze the proteins in the blood to be considered as biomarkers. Albumin, which constitutes the majority of total serum proteins, complicates the discovery of low-density proteins that are important for the diagnosis of diseases. Based on this, an alternative approach for albumin depletion was developed in this study by covalently attached Cibacron Blue 3GA (CB) to magnetic microcryogels. After detailed characterization of CB attached magnetic microcryogels synthesized via a microstencil array chip, albumin adsorption studies were performed to examine the optimum depletion conditions. In the presented study, the maximum albumin adsorption capacity (Qmax) was calculated as 149.25 mg/mL in pH 5.0 acetate buffer solution, which is the optimum pH value for albumin. Experimental studies have demonstrated that CB-attached magnetic microcryogels can be reused without loss of performance for albumin depletion after 10 adsorption-desorption cycles.
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Affiliation(s)
- Merve Asena Özbek
- Faculty of Science, Department of Chemistry, Hacettepe University, Ankara, Turkey
| | - Nilay Bereli
- Faculty of Science, Department of Chemistry, Hacettepe University, Ankara, Turkey
| | - Erdoğan Özgür
- Faculty of Science, Department of Chemistry, Hacettepe University, Ankara, Turkey
| | - Adil Denizli
- Faculty of Science, Department of Chemistry, Hacettepe University, Ankara, Turkey
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13
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Zhu Z, Li J, Ma F, Chen G, Tian H, Li J, Yang P. Poly (polyethylene glycol diacrylate‐
co
‐allyl glycidyl ether) cryogels: Preparation, modification with iminodiacetic acid, and application of Cu(II) removal. J Appl Polym Sci 2023. [DOI: 10.1002/app.53754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Affiliation(s)
- Zhifei Zhu
- School of Environmental Science and Engineering Qilu University of Technology (Shandong Academy of Sciences) Jinan People's Republic of China
| | - Junying Li
- School of Chemistry and Chemical Engineering Qilu University of Technology (Shandong Academy of Sciences) Jinan People's Republic of China
| | - Feng Ma
- School of Environmental Science and Engineering Qilu University of Technology (Shandong Academy of Sciences) Jinan People's Republic of China
- School of Chemistry and Chemical Engineering Qilu University of Technology (Shandong Academy of Sciences) Jinan People's Republic of China
| | - Guangxu Chen
- School of Environmental Science and Engineering Qilu University of Technology (Shandong Academy of Sciences) Jinan People's Republic of China
| | - Haoran Tian
- School of Environmental Science and Engineering Qilu University of Technology (Shandong Academy of Sciences) Jinan People's Republic of China
| | - Jian Li
- Shandong Analysis and Test Center Qilu University of Technology (Shandong Academy of Sciences) Jinan People's Republic of China
| | - Pengfei Yang
- School of Chemistry and Chemical Engineering Qilu University of Technology (Shandong Academy of Sciences) Jinan People's Republic of China
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14
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Trinh THT, Ye L, Hajizadeh S. Impact of double cryogelation process on a macroporous dye-affinity hydrogel. J Sep Sci 2023; 46:e2300017. [PMID: 36780629 DOI: 10.1002/jssc.202300017] [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: 01/09/2023] [Revised: 02/06/2023] [Accepted: 02/09/2023] [Indexed: 02/15/2023]
Abstract
Cryogels with interconnected channels allow high flow-through properties and mass transfer when dealing with complex mixtures such as non-clarified crude extracts. However, their mechanical strength can be challenged due to a large void volume inside the polymeric network. We have addressed this problem by forming a double-layer cryogel applied as a dye-affinity chromatography gel. In this study, poly(acrylamide-co-allyl glycidyl ether) cryogel was prepared at sub-zero temperature. The second layer was then prepared inside the primary cryogel under the same conditions to form a double-layer network. Cibacron Blue F3GA, a dye molecule, was immobilized on the surface of the cryogels. Bovine serum albumin was used as a model molecule to study the adsorption/elution procedure in batch and continuous modes. The maximum batch binding capacity and the dynamic binding capacity for the single-layer cryogel were 18 and 0.11, and for the double-layer cryogel were 7.5 and 0.9 mg/g of gel, respectively. However, the mechanical stability of the double-layer cryogel increased 7-fold (144 kPa). It was found that the kinetic and adsorption isotherms follow pseudo-second-order and Freundlich models, respectively. The regeneration of the columns after adsorption/elution cycles was evaluated, and no significant loss of capacity was observed after 10 cycles.
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Affiliation(s)
- Thi Hoai Thu Trinh
- Department of Chemistry, Division of Pure and Applied Biochemistry, Lund University, Lund, Sweden.,Chemical laboratory, Ejendals AB, Leksand, Sweden
| | - Lei Ye
- Department of Chemistry, Division of Pure and Applied Biochemistry, Lund University, Lund, Sweden
| | - Solmaz Hajizadeh
- Department of Chemistry, Division of Pure and Applied Biochemistry, Lund University, Lund, Sweden
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15
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Ambreen J, Haleem A, Shah AA, Mushtaq F, Siddiq M, Bhatti MA, Shah Bukhari SNU, Chandio AD, Mahdi WA, Alshehri S. Facile Synthesis and Fabrication of NIPAM-Based Cryogels for Environmental Remediation. Gels 2023; 9:gels9010064. [PMID: 36661830 PMCID: PMC9857948 DOI: 10.3390/gels9010064] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 01/06/2023] [Accepted: 01/06/2023] [Indexed: 01/14/2023] Open
Abstract
Herein, polymeric cryogels containing poly(N-isopropylacrylamide) were synthesized by cryo-polymerization at subzero temperature. The synthesized cryogels were loaded with silver and palladium nanoparticles by the chemical reduction method at room temperature using the reducing agent NaBH4. Moreover, for comparison with cryogels, pure poly(N-isopropylacrylamide) hydrogel and its silver hybrid were also prepared by the conventional method at room temperature. The chemical structure and functional group analysis of the pure cryogels was confirmed by Fourier transform infrared spectroscopy. The synthesis of hybrid cryogels was confirmed by the X-ray diffraction technique and energy dispersive X-ray. The pore size and surface morphology of the pure cryogels, their respective hybrid cryogels and of conventional hydrogels were studied by using the scanning electron microscopy technique. The hybrid cryogels were successfully used as a catalyst for the degradation of methyl orange dye. The degradation performance of the hybrid cryogels was much better than its counterpart hybrid hydrogel for methyl orange dye. The effect of temperature and amount of catalyst on catalytic performance was studied by UV-visible spectroscopy. The reduction follows pseudo-first-order reaction kinetics. In addition, the antibacterial activities of these cryogels were evaluated against Gram-positive bacteria (Staphylococcus aureus, ATCC: 2593) and Gram-negative bacteria (Escherichia coli, ATCC: 25922). Both hybrid cryogels have shown much better antibacterial activity for these two strains of bacteria compared to pure cryogels. The results indicate that these cryogels are potential candidates for water purification systems as well as biomedical applications.
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Affiliation(s)
- Jaweria Ambreen
- Department of Chemistry, COMSATS University Islamabad, Park Road, Islamabad 45550, Pakistan
- Correspondence: (J.A.); (A.A.S.)
| | - Abdul Haleem
- Department of Chemistry, Quaid-i-Azam University, Islamabad 45550, Pakistan
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Aqeel Ahmed Shah
- Wet Chemistry Laboratory, Department of Metallurgical Engineering, NED University of Engineering and Technology, University Road, Karachi 75720, Pakistan
- Correspondence: (J.A.); (A.A.S.)
| | - Fozia Mushtaq
- Department of Chemistry, COMSATS University Islamabad, Park Road, Islamabad 45550, Pakistan
| | - Muhammad Siddiq
- Department of Chemistry, Quaid-i-Azam University, Islamabad 45550, Pakistan
| | - Muhammad Ali Bhatti
- Institute of Environmental Sciences, University of Sindh, Jamshoro 76080, Pakistan
| | - Syed Nizam Uddin Shah Bukhari
- Department of Basic Science and Humanities, Dawood University of Engineering and Technology, Karachi 74800, Pakistan
| | - Ali Dad Chandio
- Wet Chemistry Laboratory, Department of Metallurgical Engineering, NED University of Engineering and Technology, University Road, Karachi 75720, Pakistan
| | - Wael A. Mahdi
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Sultan Alshehri
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
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16
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Bao C, Zhang X, Shen J, Li C, Zhang J, Feng X. Freezing-triggered gelation of quaternized chitosan reinforced with microfibrillated cellulose for highly efficient removal of bilirubin. J Mater Chem B 2022; 10:8650-8663. [PMID: 36218039 DOI: 10.1039/d2tb01407f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The highly efficient removal of bilirubin from blood by hemoperfusion for liver failure therapy remains a challenge in the clinical field due to the low adsorption capacity and poor hemocompatibility of currently used carbon-based adsorbents. Polysaccharide-based cryogels seem to be promising candidates for hemoperfusion adsorbents owing to their inherited excellent hemocompatibility. However, the weak mechanical strength and relatively low adsorption capacity of polysaccharide-based cryogels limited their application in bilirubin adsorption. In this work, we presented a freezing-triggered strategy to fabricate QCS/MFC cryogels, which were formed by quaternized chitosan (QCS) crosslinked with divinylsulfonyl methane (BVSM) and reinforced with microfibrillated cellulose (MFC). Ice crystal exclusions triggered the chemical crosslinking to generate the cryogels with dense pore walls. The obtained QCS/MFC cryogels were characterized by FTIR, SEM, stress-strain test, and hemocompatibility assay, which exhibited interconnected macroporous structures, excellent shape-recovery and mechanical performance, and outstanding blood compatibility. Due to the quaternary ammonium functionalization of chitosan, the QCS/MFC showed a high adsorption capacity of 250 mg g-1 and a short adsorption equilibrium time of 3 h. More importantly, the QCS/MFC still exhibited high adsorption efficiency (over 49.7%) in the presence of 40 g L-1 albumin. Furthermore, the QCS/MFC could also maintain high dynamic adsorption efficiency in self-made hemoperfusion devices. This facile approach provides a new avenue to develop high-performance hemoperfusion adsorbents for bilirubin removal, showing great promise for the translational therapy of hyperbilirubinemia.
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Affiliation(s)
- Chunxiu Bao
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, China.
| | - Xufeng Zhang
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, China.
| | - Jing Shen
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, China.
| | - Changjing Li
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, China.
| | - Jinmeng Zhang
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, China.
| | - Xiyun Feng
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, China.
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17
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Kudaibergen G, Zhunussova M, Mun EA, Ramankulov Y, Ogay V. Macroporous Cell-Laden Gelatin/Hyaluronic Acid/Chondroitin Sulfate Cryogels for Engineered Tissue Constructs. Gels 2022; 8:gels8090590. [PMID: 36135302 PMCID: PMC9498617 DOI: 10.3390/gels8090590] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 09/13/2022] [Accepted: 09/13/2022] [Indexed: 11/16/2022] Open
Abstract
Cryogels are a unique macroporous material for tissue engineering. In this work, we study the effect of hyaluronic acid on the physicochemical properties of cryogel as well as on the proliferation of a 3D model of mesenchymal stem cells. The functional groups of the synthesized cryogels were identified using Fourier transform infrared spectroscopy. With an increase in the content of hyaluronic acid in the composition of the cryogel, an increase in porosity, gel content and swelling behavior was observed. As the hyaluronic acid content increased, the average pore size increased and more open pores were formed. Degradation studies have shown that all cryogels were resistant to PBS solution for 8 weeks. Cytotoxicity assays demonstrated no toxic effect on viability of rat adipose-derived mesenchymal stem cells (ADMSCs) cultured on cryogels. ADMSC spheroids were proliferated on scaffolds and showed the ability of the cryogels to orient cell differentiation into chondrogenic lineage even in the absence of inductive agents. Thus, our results demonstrate an effective resemblance to extracellular matrix structures specific to cartilage-like microenvironments by cryogels and their further perspective application as potential biomaterials.
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Affiliation(s)
- Gulshakhar Kudaibergen
- Stem Cell Laboratory, National Center for Biotechnology, Nur-Sultan 010000, Kazakhstan
- Correspondence:
| | - Madina Zhunussova
- Stem Cell Laboratory, National Center for Biotechnology, Nur-Sultan 010000, Kazakhstan
| | - Ellina A. Mun
- School of Science and Humanities, Nazarbayev University, Nur-Sultan 010000, Kazakhstan
| | - Yerlan Ramankulov
- Stem Cell Laboratory, National Center for Biotechnology, Nur-Sultan 010000, Kazakhstan
- School of Science and Humanities, Nazarbayev University, Nur-Sultan 010000, Kazakhstan
| | - Vyacheslav Ogay
- Stem Cell Laboratory, National Center for Biotechnology, Nur-Sultan 010000, Kazakhstan
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18
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Ionic gelation synthesis, characterization and adsorption studies of cross-linked chitosan-tripolyphosphate (CS-TPP) nanoparticles for removal of As (V) ions from aqueous solution: kinetic and isotherm studies. TOXIN REV 2022. [DOI: 10.1080/15569543.2021.1933532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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19
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An Engineered Protein-Based Building Block (Albumin Methacryloyl) for Fabrication of a 3D In Vitro Cryogel Model. Gels 2022; 8:gels8070404. [PMID: 35877489 PMCID: PMC9324498 DOI: 10.3390/gels8070404] [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: 05/20/2022] [Revised: 06/15/2022] [Accepted: 06/22/2022] [Indexed: 11/25/2022] Open
Abstract
Drug-induced liver injury (DILI) is a leading cause of attrition in drug development or withdrawal; current animal experiments and traditional 2D cell culture systems fail to precisely predict the liver toxicity of drug candidates. Hence, there is an urgent need for an alternative in vitro model that can mimic the liver microenvironments and accurately detect human-specific drug hepatotoxicity. Here, for the first time we propose the fabrication of an albumin methacryloyl cryogel platform inspired by the liver’s microarchitecture via emulating the mechanical properties and extracellular matrix (ECM) cues of liver. Engineered crosslinkable albumin methacryloyl is used as a protein-based building block for fabrication of albumin cryogel in vitro models that can have potential applications in 3D cell culture and drug screening. In this work, protein modification, cryogelation, and liver ECM coating were employed to engineer highly porous three-dimensional cryogels with high interconnectivity, liver-like stiffness, and liver ECM as artificial liver constructs. The resulting albumin-based cryogel in vitro model provided improved cell–cell and cell–material interactions and consequently displayed excellent liver functional gene expression, being conducive to detection of fialuridine (FIAU) hepatotoxicity.
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20
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Baimenov A, Montagnaro F, Inglezakis VJ, Balsamo M. Experimental and Modeling Studies of Sr 2+ and Cs + Sorption on Cryogels and Comparison to Commercial Adsorbents. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c00531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alzhan Baimenov
- National Laboratory Astana, Nazarbayev University, Nur-Sultan 010000, Kazakhstan
- Faculty of Chemistry and Chemical Technology, Al-Farabi Kazakh National University, Almaty 050012, Kazakhstan
| | - Fabio Montagnaro
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant’Angelo, 80126 Napoli, Italy
| | - Vassilis J. Inglezakis
- Department of Chemical & Process Engineering, University of Strathclyde, Glasgow G1 1XJ, United Kingdom
| | - Marco Balsamo
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant’Angelo, 80126 Napoli, Italy
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21
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Khalil KM, Elhamdy WA, Elsamahy AA. Biomass derived P−doped activated carbon as nanostructured mesoporous adsorbent for chromium(VI) pollutants with pronounced functional efficiency and recyclability. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128553] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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22
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Chen J, Liao C, Guo XX, Hou SC, He WD. PAAO cryogels from amidoximated P(acrylic acid-co-acrylonitrile) for the adsorption of lead ion. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111192] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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23
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Detection and Prediction of HMS from Drinking Water by Analysing the Adsorbents from Residuals Using Deep Learning. ADSORPT SCI TECHNOL 2022. [DOI: 10.1155/2022/3265366] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Contamination HM is an important issue associated with the environment, and it requires suitable steps for the reduction of HMs in water at an acceptable ratio. With modern technologies, this could be possible by enabling the carbon adsorbents to adsorb the pollutions via deep learning strategies. In this paper, we develop a model on detection and prediction of presence of HMs from drinking water by analysing the adsorbents from residuals using deep learning. The study uses dense neural networks or DenseNets to analyse the microscopic images of the residual adsorbents. The study initially preprocesses and extracts features using standardised procedure. The DenseNets are used finally for detection purpose, and it is trained and tested with standard set of microscopic images. The experimental results are conducted to test the efficacy of the deep learning model on detecting the HM composition. The results of simulation show that the proposed deep learning model achieves 95% higher rate of detecting the HM composition from the adsorption residuals than other methods.
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Martínez-Lázaro A, Ramírez-Montoya LA, Ledesma-García J, Montes-Morán MA, Gurrola MP, Menéndez JA, Arenillas A, Arriaga LG. Facile Synthesis of Unsupported Pd Aerogel for High Performance Formic Acid Microfluidic Fuel Cell. MATERIALS 2022; 15:ma15041422. [PMID: 35207965 PMCID: PMC8874856 DOI: 10.3390/ma15041422] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 02/01/2022] [Accepted: 02/10/2022] [Indexed: 01/19/2023]
Abstract
In this work, unsupported Pd aerogel catalysts were synthesized for the very first time by using microwaves as a heating source followed by a lyophilization drying process and used towards formic acid electro-oxidation in a microfluidic fuel cell. Aerogels were also made by heating in a conventional oven to evaluate the microwave effect during the synthesis process of the unsupported Pd aerogels. The performance of the catalysts obtained by means of microwave heating favored the formic acid electro-oxidation with H2SO4 as the electrolyte. The aerogels' performance as anodic catalysts was carried out in a microfluidic fuel cell, giving power densities of up to 14 mW cm-2 when using mass loads of only 0.1 mg on a 0.019 cm2 electrode surface. The power densities of the aerogels obtained by microwave heating gave a performance superior to the resultant aerogel prepared using conventional heating and even better than a commercial Pd/C catalyst.
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Affiliation(s)
- Alejandra Martínez-Lázaro
- División de Investigación y Posgrado, Facultad de Ingeniería, Universidad Autónoma de Querétaro, Santiago de Queretaro 76010, Mexico; (A.M.-L.); (J.L.-G.)
| | - Luis A. Ramírez-Montoya
- Laboratory for Research on Advanced Processes for Water Treatment, Engineering Institute, Universidad Nacional Autónoma de México (UNAM), Blvd. Juriquilla 3001, Santiago de Queretaro 76230, Mexico;
| | - Janet Ledesma-García
- División de Investigación y Posgrado, Facultad de Ingeniería, Universidad Autónoma de Querétaro, Santiago de Queretaro 76010, Mexico; (A.M.-L.); (J.L.-G.)
| | - Miguel A. Montes-Morán
- Instituto de Ciencia y Tecnología del Carbono, INCAR-CSIC. Francisco Pintado Fe, 33011 Oviedo 26., Spain; (M.A.M.-M.); (J.A.M.)
| | - Mayra P. Gurrola
- CONACYT-Tecnológico Nacional de México/Instituto Tecnológico de Chetumal. Av. Insurgentes 330, David Gustavo Gutiérrez, Chetumal 77013, Mexico;
| | - J. Angel Menéndez
- Instituto de Ciencia y Tecnología del Carbono, INCAR-CSIC. Francisco Pintado Fe, 33011 Oviedo 26., Spain; (M.A.M.-M.); (J.A.M.)
| | - Ana Arenillas
- Instituto de Ciencia y Tecnología del Carbono, INCAR-CSIC. Francisco Pintado Fe, 33011 Oviedo 26., Spain; (M.A.M.-M.); (J.A.M.)
- Correspondence: (A.A.); (L.G.A.)
| | - Luis G. Arriaga
- Centro de Investigación y Desarrollo Tecnológico en Electroquímica, Santiago de Queretaro 76703, Mexico
- Correspondence: (A.A.); (L.G.A.)
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Cellulose Cryogels as Promising Materials for Biomedical Applications. Int J Mol Sci 2022; 23:ijms23042037. [PMID: 35216150 PMCID: PMC8880007 DOI: 10.3390/ijms23042037] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 02/04/2022] [Accepted: 02/11/2022] [Indexed: 02/01/2023] Open
Abstract
The availability, biocompatibility, non-toxicity, and ease of chemical modification make cellulose a promising natural polymer for the production of biomedical materials. Cryogelation is a relatively new and straightforward technique for producing porous light and super-macroporous cellulose materials. The production stages include dissolution of cellulose in an appropriate solvent, regeneration (coagulation) from the solution, removal of the excessive solvent, and then freezing. Subsequent freeze-drying preserves the micro- and nanostructures of the material formed during the regeneration and freezing steps. Various factors can affect the structure and properties of cellulose cryogels, including the cellulose origin, the dissolution parameters, the solvent type, and the temperature and rate of freezing, as well as the inclusion of different fillers. Adjustment of these parameters can change the morphology and properties of cellulose cryogels to impart the desired characteristics. This review discusses the structure of cellulose and its properties as a biomaterial, the strategies for cellulose dissolution, and the factors affecting the structure and properties of the formed cryogels. We focus on the advantages of the freeze-drying process, highlighting recent studies on the production and application of cellulose cryogels in biomedicine and the main cryogel quality characteristics. Finally, conclusions and prospects are presented regarding the application of cellulose cryogels in wound healing, in the regeneration of various tissues (e.g., damaged cartilage, bone tissue, and nerves), and in controlled-release drug delivery.
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Ume OL, Ekeoma BC, Yusuf M, Al-Kahtani AA, Ubaidullah M, Sillanpää M. Batch studies of hexavalent chromium biosorption from mining wastewater using Aspergillus niger. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022] Open
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Motaghi H, Arabkhani P, Parvinnia M, Javadian H, Asfaram A. Synthesis of highly porous three-dimensional PVA/GO/ZIF-67 cryogel for the simultaneous treatment of waters contaminated with cadmium (II) and lead (II) heavy metal ions. NEW J CHEM 2022. [DOI: 10.1039/d1nj05418j] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this research, PVA/GO/ZIF-67 cryogel as a highly porous three-dimensional polymeric adsorbent was synthesized by freeze-drying method and applied for the simultaneous removal of Cd2+ and Pb2+ ions from contaminated...
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28
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Preparation and Characterization of Calcium Cross-Linked Starch Monolithic Cryogels and Their Application as Cost-Effective Green Filters. Polymers (Basel) 2021; 13:polym13223975. [PMID: 34833272 PMCID: PMC8617897 DOI: 10.3390/polym13223975] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/12/2021] [Accepted: 11/13/2021] [Indexed: 11/30/2022] Open
Abstract
Monolithic cryogels from starch were successfully synthesized and applied as alternative biodegradable filters for the first time. Rice flour was cross-linked with Ca2+ from limewater during gelatinization before being frozen and then thawed for three cycles. The resultant material was then soaked in ethanol for 3 h before incubation at 80 °C for 1 h, yielding monolithic material with interconnected pores in sizes of 51 ± 18 to 52 ± 15 µm without any need of freeze-drying. The cryogels possessed macroporous structure with specific surface areas from 1.1 to 4.3 m2g−1, they could adsorb water from 599 ± 27 to 635 ± 59% of their dry weight with low swelling ratios of 6.0 ± 0.3 to 6.4 ± 0.6 gwater/gcryogel, and could be applied as biofilters to remove suspended particles and reduce the light absorption of water sample from 25 ± 3 to 96 ± 5%. The prepared biofilters can be re-used up to three times, although they cost only USD 0.0004/piece. Complete weight loss resulted from burial in soil for 30 days, indicating environmentally friendly biodegradation and potential for environmental applications.
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29
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Tian Y, Zhang X, Feng X, Zhang J, Zhong T. Shapeable and underwater super-elastic cellulose nanofiber/alginate cryogels by freezing-induced oxa-Michael reaction for efficient protein purification. Carbohydr Polym 2021; 272:118498. [PMID: 34420751 DOI: 10.1016/j.carbpol.2021.118498] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 07/06/2021] [Accepted: 07/22/2021] [Indexed: 01/18/2023]
Abstract
Construction of monolithic cryogels that can efficiently adsorb proteins is of great significance in biotechnological and pharmaceutical industries. Herein, a novel approach is presented to fabricate microfibrillated cellulose (MFC)/sodium alginate (SA) cryogels by using freezing-induced oxa-Michael reaction at -12 °C. Thanks to the controllable reactiveness of divinyl sulfone (DVS), cryo-concentrated pH increase activates the oxa-Michael reaction between DVS and hydroxyl groups of MFCs and SAs. The obtained composite cryogel exhibits outstanding underwater shape recovery and excellent fatigue resistance. Moreover, the MFC/SAs reveal a high lysozyme adsorption capacity of 294.12 mg/g, surpassing most of absorbent materials previously reported. Furthermore, the cryogel-packed column can purify lysozyme continuously from chicken egg white, highlighting its outstanding practical application performance. Reuse experiments indicated that over 90% of lysozyme extraction capacity was retained after 6 cycles. This work provides a new avenue to design and develop next-generation chromatographic media of natural polysaccharide-based cryogel for protein purification.
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Affiliation(s)
- Yiran Tian
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, China
| | - Xufeng Zhang
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, China.
| | - Xiyun Feng
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, China.
| | - Jinmeng Zhang
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, China
| | - Tianyi Zhong
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, China
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30
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Hajizadeh S, Kettisen K, Bülow L, Ye L. Rapid Separation of Human Hemoglobin on a Large Scale From Non-clarified Bacterial Cell Homogenates Using Molecularly Imprinted Composite Cryogels. Front Bioeng Biotechnol 2021; 9:671229. [PMID: 34660545 PMCID: PMC8517190 DOI: 10.3389/fbioe.2021.671229] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 04/07/2021] [Indexed: 11/13/2022] Open
Abstract
The production of a macroporous hydrogel column, known as cryogel, has been scaled up (up to 150 mL) in this work for the purification of human hemoglobin from non-clarified bacterial homogenates. Composite cryogels were synthesized in the presence of adult hemoglobin (HbA) to form a molecularly imprinted polymer (MIP)network where the affinity sites for the targeted molecule were placed directly on an acrylamide cryogel by protein imprinting during the cryogelation. The MIP composite cryogel column was first evaluated in a well-defined protein mixture. It showed high selectivity toward HbA in spite of the presence of serum albumin. Also, when examined in complex non-clarified E. coli cell homogenates, the column showed excellent chromatographic behavior. The binding capacity of a 50 mL column was thus found to be 0.88 and 1.2 mg/g, from a protein mixture and non-clarified cell homogenate suspension, respectively. The recovery and purification of the 50 mL column for separation of HbA from cell suspension were evaluated to be 79 and 58%, respectively. The MIP affinity cryogel also displayed binding and selectivity toward fetal Hb (HbF) under the same operational conditions.
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Affiliation(s)
- Solmaz Hajizadeh
- Division of Pure and Applied Biochemistry, Department of Chemistry, Lund University, Lund, Sweden
| | - Karin Kettisen
- Division of Pure and Applied Biochemistry, Department of Chemistry, Lund University, Lund, Sweden
| | - Leif Bülow
- Division of Pure and Applied Biochemistry, Department of Chemistry, Lund University, Lund, Sweden
| | - Lei Ye
- Division of Pure and Applied Biochemistry, Department of Chemistry, Lund University, Lund, Sweden
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31
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Volkova N, Berillo D. Water Uptake as a Crucial Factor on the Properties of Cryogels of Gelatine Cross-Linked by Dextran Dialdehyde. Gels 2021; 7:159. [PMID: 34698152 PMCID: PMC8544549 DOI: 10.3390/gels7040159] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Revised: 09/27/2021] [Accepted: 09/28/2021] [Indexed: 12/19/2022] Open
Abstract
We investigated the water sorption properties of macroporous cryogels of gelatine (Gel) and dextran dialdehyde (DDA) prepared via cryogelation at 260 K and following the freeze drying processes. Water vapour sorption isotherms for aerogels were studied at 293 K by two independent methods: static-gravimetric and dynamic vapour sorption (DVS) over a water activity range of 0.11-1.0. Experimental data were fitted by use of the Brunauer-Emmett-Teller (BET) and Guggenheim-Anderson-de Boer (GAB) models. The BET model (for a water activity range of 0.1 ≤ p/po ≤ 0.5) was used to calculate the sorption parameters of the studied cryogels (the monolayer capacity, surface area and energy of interaction). In comparison with BET, the GAB model can be applied for the whole range of water activities (0.1 ≤ p/po ≤ 0.95). This model gave an almost perfect correlation between the experimental and calculated sorption isotherms using nonlinear least squares fitting (NLSF). Confocal Laser Scanning Microscopy (CLSM) was used to confirm the structural differences between various DDA:Gel cryogel compositions. Thermogravimetric analysis and DSC data for aerogels DDA:Gel provided information regarding the bonded water loss, relative remaining water content of the material and the temperature of decomposition. Estimation of the amount of bound water in the cryogels after the freeze drying process as well as after the cycle of treatment of cryogels with high humidity and drying was performed using DSC. The results of the DSC determinations showed that cryogels with higher gelatin content had higher levels of bonded water.
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Affiliation(s)
- Natalia Volkova
- Department of Biotechnology, Lund University, P.O. Box 124, 22 100 Lund, Sweden;
- Department of Solid State Physics, Lund University, P.O. Box 118, 22 100 Lund, Sweden
| | - Dmitriy Berillo
- Department of Biotechnology, Lund University, P.O. Box 124, 22 100 Lund, Sweden;
- Department of Pharmaceutical and Toxicological Chemistry, Pharmacognosy and Botany School of Pharmacy, Asfendiyarov Kazakh National Medical University, Almaty 050000, Kazakhstan
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32
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Li Q, Li Y, Li Y, Chen Y, Wu Q, Wang S. Efficient removal of methyl orange by nanocomposite aerogel of polyethyleneimine and
β
‐cyclodextrin
grafted cellulose nanocrystals. J Appl Polym Sci 2021. [DOI: 10.1002/app.51481] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Qian Li
- Zhejiang Provincial Key Laboratory of Fiber Materials and Manufacturing Technology Zhejiang Sci‐Tech University Hangzhou China
- College of Chemistry and Materials Engineering Zhejiang A&F University Hangzhou China
| | - Yujie Li
- College of Chemistry and Materials Engineering Zhejiang A&F University Hangzhou China
| | - Yuehu Li
- College of Chemistry and Materials Engineering Zhejiang A&F University Hangzhou China
- State Key Laboratory of Pulp and Paper Engineering South China University of Technology Guangzhou China
| | - Yifan Chen
- College of Chemistry and Materials Engineering Zhejiang A&F University Hangzhou China
| | - Qiang Wu
- College of Chemistry and Materials Engineering Zhejiang A&F University Hangzhou China
| | - Siqun Wang
- Center for Renewable Carbon University of Tennessee Knoxville Tennessee USA
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33
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Zhang J, Zhong T, Xiang Y, Zhang X, Feng X. Microfibrillated cellulose reinforced poly(vinyl imidazole) cryogels for continuous removal of heavy metals. J Appl Polym Sci 2021. [DOI: 10.1002/app.51456] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Jinmeng Zhang
- College of Chemistry and Chemical Engineering Yunnan Normal University Kunming China
| | - Tianyi Zhong
- College of Chemistry and Chemical Engineering Yunnan Normal University Kunming China
| | - Yun Xiang
- College of Chemistry and Chemical Engineering Yunnan Normal University Kunming China
| | - Xufeng Zhang
- College of Chemistry and Chemical Engineering Yunnan Normal University Kunming China
| | - Xiyun Feng
- College of Chemistry and Chemical Engineering Yunnan Normal University Kunming China
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34
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Effect of Cryostructuring Treatment on Some Properties of Xanthan and Karaya Cryogels for Food Applications. Molecules 2021; 26:molecules26092788. [PMID: 34065084 PMCID: PMC8125894 DOI: 10.3390/molecules26092788] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 04/30/2021] [Accepted: 05/06/2021] [Indexed: 11/16/2022] Open
Abstract
Cryogels are novel materials because the manufacturing process known as cryostructuring allows biopolymers to change their properties as a result of repeated controlled freeze-thaw cycles. Hydrogels of xanthan and karaya gums were evaluated after undergoing up to four controlled freeze-thaw cycles in indirect contact with liquid nitrogen (up to -150 °C) to form cryogels. Changes in structural, molecular, rheological, and thermal properties were evaluated and compared to those of their respective hydrogels. Samples were also analyzed by Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy with Attenuated Total Reflection (FTIR-ATR), Rotational Rheology (RR), Modulated Differential Scanning Calorimetry (MDSC) and zeta potential (ζ). In general, significant differences (p < 0.05) between the numbers of freeze-thaw cycles were found. Karaya cryogels were not stable to repeated cycles of cryostructuring such as the three-cycle xanthan cryogel, which has the best structural order (95.55%), molecular interactions, and thermal stability, which allows the generation of a novel material with improved thermal and structural properties that can be used as an alternative in food preservation.
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35
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Hezarkhani M, Ustürk S, Özbilenler C, Yilmaz E. Pullulan/poly(
N‐vinylimidazole
) cryogel: An efficient adsorbent for methyl orange. J Appl Polym Sci 2021. [DOI: 10.1002/app.50958] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Marjan Hezarkhani
- Department of Chemistry, Faculty of Arts and Sciences Eastern Mediterranean University Famagusta Turkey
- Sabanci University Integrated Manufacturing Technologies Research and Application Center & Composite Technologies Center of Excellence İstanbul Turkey
| | - Selma Ustürk
- Department of Chemistry, Faculty of Arts and Sciences Eastern Mediterranean University Famagusta Turkey
| | - Cahit Özbilenler
- Department of Chemistry, Faculty of Arts and Sciences Eastern Mediterranean University Famagusta Turkey
| | - Elvan Yilmaz
- Department of Chemistry, Faculty of Arts and Sciences Eastern Mediterranean University Famagusta Turkey
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36
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Application of Nanosized Zeolite X Modified with Glutamic Acid as a Novel Composite for the Efficient Removal of Co(II) ions from Aqueous Media. J Inorg Organomet Polym Mater 2021. [DOI: 10.1007/s10904-021-01913-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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37
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Berillo D, Al-Jwaid A, Caplin J. Polymeric Materials Used for Immobilisation of Bacteria for the Bioremediation of Contaminants in Water. Polymers (Basel) 2021; 13:1073. [PMID: 33805360 PMCID: PMC8037671 DOI: 10.3390/polym13071073] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 03/21/2021] [Accepted: 03/22/2021] [Indexed: 02/07/2023] Open
Abstract
Bioremediation is a key process for reclaiming polluted soil and water by the use of biological agents. A commonly used approach aims to neutralise or remove harmful pollutants from contaminated areas using live microorganisms. Generally, immobilised microorganisms rather than planktonic cells have been used in bioremediation methods. Activated carbon, inorganic minerals (clays, metal oxides, zeolites), and agricultural waste products are acceptable substrates for the immobilisation of bacteria, although there are limitations with biomass loading and the issue with leaching of bacteria during the process. Various synthetic and natural polymers with different functional groups have been used successfully for the efficient immobilisation of microorganisms and cells. Promise has been shown using macroporous materials including cryogels with entrapped bacteria or cells in applications for water treatment and biotechnology. A cryogel is a macroporous polymeric gel formed at sub-zero temperatures through a process known as cryogelation. Macroporous hydrogels have been used to make scaffolds or supports for immobilising bacterial, viral, and other cells. The production of composite materials with immobilised cells possessing suitable mechanical and chemical stability, porosity, elasticity, and biocompatibility suggests that these materials are potential candidates for a range of applications within applied microbiology, biotechnology, and research. This review evaluates applications of macroporous cryogels as tools for the bioremediation of contaminants in wastewater.
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Affiliation(s)
- Dmitriy Berillo
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton BN2 4GJ, UK
- Department of Biotechnology, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan
- Department of Pharmaceutical and Toxicological Chemistry, Pharmacognosy and Botany School of Pharmacy, Asfendiyarov Kazakh National Medical University, Almaty 050000, Kazakhstan
| | - Areej Al-Jwaid
- School of Environment and Technology, University of Brighton, Brighton BN2 4GJ, UK; (A.A.-J.); (J.C.)
- Environment and Pollution Engineering Technical Department, Basrah Engineering Technical College, Southern Technical University, Basra 61003, Iraq
| | - Jonathan Caplin
- School of Environment and Technology, University of Brighton, Brighton BN2 4GJ, UK; (A.A.-J.); (J.C.)
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38
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Fu CY, Chuang WT, Hsu SH. A Biodegradable Chitosan-Polyurethane Cryogel with Switchable Shape Memory. ACS APPLIED MATERIALS & INTERFACES 2021; 13:9702-9713. [PMID: 33600161 DOI: 10.1021/acsami.0c21940] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Cryogels are matrices that are formed in moderately frozen solutions of monomeric or polymeric precursors. They have the advantages of interconnected macropores, structural stability, and compressibility. Meanwhile, thermally induced shape memory is an attractive feature of certain functional materials. Although there have been several studies concerning shape-memory cryogels, little work has been conducted on shape-memory cryogels with biodegradability. In this study, a water-based biodegradable difunctional polyurethane with a shape-memory property was synthesized and used as the nanoparticulate crosslinker to react with chitosan to form a shape-memory cryogel. The thermally induced shape-memory mechanism was clarified using in situ wide-angle X-ray scattering (WAXS) and small-angle X-ray scattering (SAXS) during the shape-memory process. The in situ WAXS showed the changes of crystallinity in the crosslinker and the cryogel during the shape fixation and recovery processes. The in situ SAXS revealed the orientation of crystallinity of the crosslinker and the cryogel as the mechanism for shape memory. The strip-shape cryogel was deformed at 50 °C to U-shape and fixed at - 20 °C, which was squeezable at 25 °C and returned to the strip-shape at 50 °C in air. The shape recovery was further tested in water at two different temperatures. The injected cryogel recovered the U-shape in 4 °C water, representing elastic recovery, and transformed to a long strip in 37 °C water, representing the switchable shape memory. Moreover, the shape-memory cryogel sheet with a large dimension (10 mm × 10 mm × 1.1 mm cryogel sheet) or with complex structures (N, T, and U shapes) could be fixed as a rod, injected through a 16 G needle, and return to its original shape in 37 °C water, all of which could not be achieved by the conventional cryogel. Human mesenchymal stem cells grown in the shape-memory cryogel scaffolds displayed long-term proliferation and chondrogenic potential. Their unique injectability and cytocompatibility suggested potential applications of shape-memory cryogels as injectable and expandable templates for tissue engineering and minimally invasive surgery.
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Affiliation(s)
- Chih-Yu Fu
- Institute of Polymer Science and Engineering, National Taiwan University, No. 1, Sec. 4 Roosevelt Road, Taipei Taiwan 10617, Republic of China
| | - Wei-Tsung Chuang
- National Synchrotron Radiation Research Center, Hsinchu, Taiwan 30076, Republic of China
| | - Shan-Hui Hsu
- Institute of Polymer Science and Engineering, National Taiwan University, No. 1, Sec. 4 Roosevelt Road, Taipei Taiwan 10617, Republic of China
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39
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Shahrokhi-Shahraki R, Benally C, El-Din MG, Park J. High efficiency removal of heavy metals using tire-derived activated carbon vs commercial activated carbon: Insights into the adsorption mechanisms. CHEMOSPHERE 2021; 264:128455. [PMID: 33032208 DOI: 10.1016/j.chemosphere.2020.128455] [Citation(s) in RCA: 119] [Impact Index Per Article: 39.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 09/24/2020] [Accepted: 09/25/2020] [Indexed: 06/11/2023]
Abstract
In this study, activated carbon was derived from pulverized waste tires using carbonization and chemical activation techniques. Single and competitive batch adsorption experiments for the removal of three synthetic heavy metal ions (Pb2+, Cu2+ and Zn2+) from an aqueous solution were performed to benchmark the efficiency of the Tire-derived Activated Carbon (TAC) in comparison to that of commercial activated carbon (CAC), which was used as the reference material. The sorbents physicochemical properties with corresponding adsorption mechanisms were evaluated by different experimental techniques. TAC exhibited great potential to adsorb heavy metals, with monolayer adsorption capacities as high as 322.5, 185.2, and 71.9 mg g-1 for Pb2+, Cu2+ and Zn2+, respectively, which were significantly higher than the adsorption capacities exhibited by CAC, which were 42.5, 15.0, and 14.0 mg∙g-1 for Pb2+, Cu2+ and Zn2+, respectively. Competitive adsorption results demonstrated the adsorption ability of sorbents is restricted by presence of other ions, and was decreased compared to the single sorption. Sorption kinetics data, with better fit to the pseudo-second order kinetics model, revealed that TAC had faster sorption rate in comparison to CAC. The adsorption capacities of TAC and CAC were reduced to half of their initial capacities after three successive adsorption-desorption cycles. Zeta potential, FT-IR, and XPS analyses revealed that electrostatic attraction and surface complexation mechanisms, as two metal-adsorbing mechanisms, were more influential for TAC. For CAC, a higher cation exchange capacity (CEC) value indicated that the removal of heavy metals by ion exchange was the predominant mechanism.
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Affiliation(s)
- Rahim Shahrokhi-Shahraki
- Department of Civil and Environmental Engineering, Seoul National University, Seoul, South Korea.
| | - Chelsea Benally
- Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada.
| | - Mohamed Gamal El-Din
- Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada.
| | - Junboum Park
- Department of Civil and Environmental Engineering, Seoul National University, Seoul, South Korea.
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40
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Ihlenburg RBJ, Lehnen AC, Koetz J, Taubert A. Sulfobetaine Cryogels for Preferential Adsorption of Methyl Orange from Mixed Dye Solutions. Polymers (Basel) 2021; 13:E208. [PMID: 33435604 PMCID: PMC7826763 DOI: 10.3390/polym13020208] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 12/22/2020] [Accepted: 12/23/2020] [Indexed: 01/08/2023] Open
Abstract
New cryogels for selective dye removal from aqueous solution were prepared by free radical polymerization from the highly water-soluble crosslinker N,N,N',N'-tetramethyl-N,N'-bis(2-ethylmethacrylate)-propyl-1,3-diammonium dibromide and the sulfobetaine monomer 2-(N-3-sulfopropyl-N,N-dimethyl ammonium)ethyl methacrylate. The resulting white and opaque cryogels have micrometer sized pores with a smaller substructure. They adsorb methyl orange (MO) but not methylene blue (MB) from aqueous solution. Mixtures of MO and MB can be separated through selective adsorption of the MO to the cryogels while the MB remains in solution. The resulting cryogels are thus candidates for the removal of hazardous organic substances, as exemplified by MO and MB, from water. Clearly, it is possible that the cryogels are also potentially interesting for removal of other compounds such as pharmaceuticals or pesticides, but this must be investigated further.
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Affiliation(s)
| | | | | | - Andreas Taubert
- Institute of Chemistry, University of Potsdam, Karl-Liebknecht-Str. 24-25, Building 26, D-14476 Potsdam, Germany; (R.B.J.I.); (A.-C.L.); (J.K.)
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41
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Cryostructuring of Polymeric Systems. 57. Spongy Wide-Porous Cryogels Based on the Proteins of Blood Serum: Preparation, Properties and Application as the Carriers of Peptide Bioregulators. Gels 2020; 6:gels6040050. [PMID: 33327554 PMCID: PMC7768461 DOI: 10.3390/gels6040050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 12/07/2020] [Accepted: 12/10/2020] [Indexed: 12/16/2022] Open
Abstract
Wide-pore proteinaceous freeze-thaw spongy gels were synthesized via the cryotropic gelation technique using the bovine blood serum or its diluted solutions as the protein-containing precursors. The feed systems also included the denaturant (urea) and the thiol-reductant (cysteine). The gel-fraction yield decreased and the swelling degree of the walls of macropores in such heterophase matrices increased with decreasing the initial protein concentration. The optimum freezing temperature was found to be within a rather narrow range from -15 to -20 °C. In this case, the average size of the macropores in the resultant cryogels was 90-110 μm. The suitability of such soft wide-pore gel materials for the application as the carriers of peptide bioregulators was demonstrated in the in vitro experiments, when the posterior segments of the Pleurodeles waltl adult newts' eyes were used as a model biological target. It was shown that a statistically reliable protective effect on the state of the sclera, vascular membrane and retinal pigment epithelium, as well as on the viability of fibroblasts, was inherent in the proteinaceous cryogels loaded with the peptide bioregulator (Viophtan-5™) isolated from the bovine eye sclera.
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42
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Baimenov AZ, Berillo DA, Moustakas K, Inglezakis VJ. Efficient removal of mercury (II) from water by use of cryogels and comparison to commercial adsorbents under environmentally relevant conditions. JOURNAL OF HAZARDOUS MATERIALS 2020; 399:123056. [PMID: 32526429 DOI: 10.1016/j.jhazmat.2020.123056] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 05/07/2020] [Accepted: 05/25/2020] [Indexed: 06/11/2023]
Abstract
Mercury is a toxic element, which can be found in air, water and soil in several inorganic and organic forms. Mercury pollution comes from a variety of industrial sources, including vinyl-chloride, pulp and paper, fertilizers and pharmaceuticals industry, gold mining and cement production. Gels have increasingly attracted the interest over the past decades and one of the investigated applications is the fast removal of organic substances, metals and other cations and anions from water. In this work, two types of cryogels were synthesized at sub-zero temperature by free-radical polymerization technique, characterized by using a set of complimentary methods and used for the removal of mercury from aqueous solutions of different chemistry. Kinetics and equilibrium studies were performed in ultra-pure water solutions in order to study the mechanisms in the presence nitrate and chloride ions. The cryogels exhibited excellent efficiency towards mercury removal from all model solutions. Moreover, the cryogels were tested in different water matrixes (tap, river and sea water) and compared to commercial adsorbents (activated carbon, strong acid resin and zeolite Y). Cryogels were able to remove mercury much faster than commercial adsorbents with the exception of seawater where activated carbon was superior.
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Affiliation(s)
- A Zh Baimenov
- Environmental Science and Technology Group (ESTg), Chemical & Materials Engineering Department, School of Engineering, Nazarbayev University, Nur-Sultan, Kazakhstan; The Environment & Resource Efficiency Cluster (EREC), Nazarbayev University, Nur-Sultan, Kazakhstan
| | - D A Berillo
- Department of Biotechnology, Al-Farabi Kazakh National University, Almaty, Kazakhstan
| | - K Moustakas
- School of Chemical Engineering, National Technical University of Athens, Athens, Greece
| | - V J Inglezakis
- Environmental Science and Technology Group (ESTg), Chemical & Materials Engineering Department, School of Engineering, Nazarbayev University, Nur-Sultan, Kazakhstan; The Environment & Resource Efficiency Cluster (EREC), Nazarbayev University, Nur-Sultan, Kazakhstan.
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43
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Malakhova I, Privar Y, Parotkina Y, Mironenko A, Eliseikina M, Balatskiy D, Golikov A, Bratskaya S. Rational Design of Polyamine-Based Cryogels for Metal Ion Sorption. Molecules 2020; 25:molecules25204801. [PMID: 33086660 PMCID: PMC7587524 DOI: 10.3390/molecules25204801] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 10/13/2020] [Accepted: 10/14/2020] [Indexed: 12/25/2022] Open
Abstract
Here we report the method of fabrication of supermacroporous monolith sorbents (cryogels) via covalent cross-linking of polyallylamine (PAA) with diglycidyl ether of 1,4-butandiol. Using comparative analysis of the permeability and sorption performance of the obtained PAA cryogels and earlier developed polyethyleneimine (PEI) cryogels, we have demonstrated the advantages and disadvantages of these polymers as sorbents of heavy metal ions (Cu(II), Zn(II), Cd(II), and Ni(II)) in fixed-bed applications and as supermacroporous matrices for the fabrication of composite cryogels containing copper ferrocyanide (CuFCN) for cesium ion sorption. Applying the rate constant distribution (RCD) model to the kinetic curves of Cu(II) ion sorption on PAA and PEI cryogels, we have elucidated the difference in sorption/desorption rates and affinity constants of these materials and showed that physical sorption contributed to the Cu(II) uptake by PAA, but not to that by PEI cryogels. It was shown that PAA cryogels had significantly higher selectivity for Cu(II) sorption in the presence of Zn(II) and Cd(II) ions in comparison with that of PEI cryogels, while irreversible sorption of Co(II) ions by PEI can be used for the separation of Ni(II) and Co(II) ions. Using IR and Mössbauer spectroscopy, we have demonstrated that strong complexation of Cu(II) ions with PEI significantly affects the in situ formation of Cu(II) ferrocyanide nanosorbents leading to their inefficiency for Cs+ ions selective uptake, whereas PAA cryogel was applicable for the fabrication of efficient monolith composites via the in situ formation of CuFCN or loading of ex situ formed CuFCN colloids.
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Affiliation(s)
- Irina Malakhova
- Institute of Chemistry, Far Eastern Branch of Russian Academy of Sciences, 159, prosp.100-letiya Vladivostoka, 690022 Vladivostok, Russia; (I.M.); (Y.P.); (Y.P.); (A.M.); (D.B.); (A.G.)
| | - Yuliya Privar
- Institute of Chemistry, Far Eastern Branch of Russian Academy of Sciences, 159, prosp.100-letiya Vladivostoka, 690022 Vladivostok, Russia; (I.M.); (Y.P.); (Y.P.); (A.M.); (D.B.); (A.G.)
| | - Yuliya Parotkina
- Institute of Chemistry, Far Eastern Branch of Russian Academy of Sciences, 159, prosp.100-letiya Vladivostoka, 690022 Vladivostok, Russia; (I.M.); (Y.P.); (Y.P.); (A.M.); (D.B.); (A.G.)
| | - Aleksandr Mironenko
- Institute of Chemistry, Far Eastern Branch of Russian Academy of Sciences, 159, prosp.100-letiya Vladivostoka, 690022 Vladivostok, Russia; (I.M.); (Y.P.); (Y.P.); (A.M.); (D.B.); (A.G.)
| | - Marina Eliseikina
- A.V. Zhirmunsky National Scientific Center of Marine Biology, Far Eastern Branch of Russian Academy of Sciences, 17, Palchevskogo street, 690041 Vladivostok, Russia;
| | - Denis Balatskiy
- Institute of Chemistry, Far Eastern Branch of Russian Academy of Sciences, 159, prosp.100-letiya Vladivostoka, 690022 Vladivostok, Russia; (I.M.); (Y.P.); (Y.P.); (A.M.); (D.B.); (A.G.)
| | - Alexey Golikov
- Institute of Chemistry, Far Eastern Branch of Russian Academy of Sciences, 159, prosp.100-letiya Vladivostoka, 690022 Vladivostok, Russia; (I.M.); (Y.P.); (Y.P.); (A.M.); (D.B.); (A.G.)
| | - Svetlana Bratskaya
- Institute of Chemistry, Far Eastern Branch of Russian Academy of Sciences, 159, prosp.100-letiya Vladivostoka, 690022 Vladivostok, Russia; (I.M.); (Y.P.); (Y.P.); (A.M.); (D.B.); (A.G.)
- Correspondence:
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Baimenov A, Berillo D, Azat S, Nurgozhin T, Inglezakis V. Removal of Cd 2+ from Water by Use of Super-Macroporous Cryogels and Comparison to Commercial Adsorbents. Polymers (Basel) 2020; 12:polym12102405. [PMID: 33086639 PMCID: PMC7650616 DOI: 10.3390/polym12102405] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 10/13/2020] [Accepted: 10/13/2020] [Indexed: 12/22/2022] Open
Abstract
In this study amphoteric cryogels were synthesized by the use of free-radical co-polymerization of acrylate-based precursors (methacrylic acid and 2-acrylamido-2-methyl-1-propansulfonic acid) with allylamine at different ratios. The physico-chemical characteristics of the cryogels were examined using SEM/EDX, FT-IR, XPS and zeta potential measurements. The cryogels were tested toward Cd2+ removal from aqueous solutions at various pH and initial concentrations. Equilibrium studies revealed a maximum sorption capacity in the range of 132-249 mg/g. Leaching experiments indicated the stability of Cd2+ in the cryogel structure. Based on kinetics, equilibrium and characterization results, possible removal mechanisms are proposed, indicating a combination of ion exchange and complexation of Cd2+ with the cryogels' surface functional groups. The cryogels were compared to commercially available adsorbents (zeolite Y and cation exchange resin) for the removal of Cd2+ from various water matrices (ultrapure water, tap water and river water) and the results showed that, under the experimental conditions used, the cryogels can be more effective adsorbents.
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Affiliation(s)
- Alzhan Baimenov
- Environmental Science & Technology Group (ESTg), Chemical & Materials Engineering Department, School of Engineering & Digital Sciences, Nazarbayev University, Nur-Sultan 010000, Kazakhstan;
- Faculty of Chemistry and Chemical Technology, Al-Farabi Kazakh National University, Almaty 050012, Kazakhstan;
| | - Dmitriy Berillo
- Department of Pharmaceutical and Toxicological Chemistry, Pharmacognosy and Botany School of Pharmacy, Kazakh National Medical University, Almaty 050012, Kazakhstan; (D.B.); (T.N.)
- Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty 050012, Kazakhstan
| | - Seitkhan Azat
- Faculty of Chemistry and Chemical Technology, Al-Farabi Kazakh National University, Almaty 050012, Kazakhstan;
- Institute of Chemical and Biological Technologies, Satbayev University, Almaty 050012, Kazakhstan
| | - Talgat Nurgozhin
- Department of Pharmaceutical and Toxicological Chemistry, Pharmacognosy and Botany School of Pharmacy, Kazakh National Medical University, Almaty 050012, Kazakhstan; (D.B.); (T.N.)
| | - Vassilis Inglezakis
- Department of Chemical & Process Engineering, University of Strathclyde, Glasgow G1 1XJ, UK
- Correspondence:
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Lozinsky VI. Cryostructuring of Polymeric Systems. 55. Retrospective View on the More than 40 Years of Studies Performed in the A.N.Nesmeyanov Institute of Organoelement Compounds with Respect of the Cryostructuring Processes in Polymeric Systems. Gels 2020; 6:E29. [PMID: 32927850 PMCID: PMC7559272 DOI: 10.3390/gels6030029] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 09/01/2020] [Accepted: 09/02/2020] [Indexed: 02/06/2023] Open
Abstract
The processes of cryostructuring in polymeric systems, the techniques of the preparation of diverse cryogels and cryostructurates, the physico-chemical mechanisms of their formation, and the applied potential of these advanced polymer materials are all of high scientific and practical interest in many countries. This review article describes and discusses the results of more than 40 years of studies in this field performed by the researchers from the A.N.Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences-one of the key centers, where such investigations are carried out. The review includes brief historical information, the description of the main effects and trends characteristic of the cryostructuring processes, the data on the morphological specifics inherent in the polymeric cryogels and cryostructurates, and examples of their implementation for solving certain applied tasks.
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Affiliation(s)
- Vladimir I Lozinsky
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street, 28, 119991 Moscow, Russia
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Naturally available diatomite and their surface modification for the removal of hazardous dye and metal ions: A review. Adv Colloid Interface Sci 2020; 282:102198. [PMID: 32579950 DOI: 10.1016/j.cis.2020.102198] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 06/09/2020] [Accepted: 06/10/2020] [Indexed: 12/18/2022]
Abstract
The presence of toxic pollutants such as dyes and metal ions at higher concentrations in water is very harmful to the environment. Removal of these pollutants using diatomaceous earth or diatomite (DE) and surface-modified DE has been extensively explored due to their excellent physio-chemical properties and low cost. Therefore, naturally available DE being inexpensive, their surface modified adsorbents could be one of the potential candidates for the wastewater treatment in the future. In this context, the current review has been summarized for the removal of both pollutants i.e., dyes and metal ions by surface-modified DE using the facile adsorption process. In addition, this review is prominently focused on the various modification process of DE, their cost-effectiveness; the physio-chemical characteristics and their maximum adsorption capacity. Further, real-time scenarios of reported adsorbents were tabulated based on the cost of the process along with the adsorption capacity of these adsorbents.
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Malakhova I, Golikov A, Azarova Y, Bratskaya S. Extended Rate Constants Distribution (RCD) Model for Sorption in Heterogeneous Systems: 2. Importance of Diffusion Limitations for Sorption Kinetics on Cryogels in Batch. Gels 2020; 6:gels6020015. [PMID: 32423004 PMCID: PMC7345341 DOI: 10.3390/gels6020015] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/10/2020] [Accepted: 05/13/2020] [Indexed: 02/07/2023] Open
Abstract
Here we address the problem of what we can expect from investigations of sorption kinetics on cryogel beads in batch. Does macroporosity of beads indeed help eliminate diffusion limitations under static sorption conditions? Are sorption rate constants calculated using phenomenological kinetic models helpful for predicting sorption properties under dynamic conditions? Applying the rate constants distribution (RCD) model to kinetic curves of Cu(II) ions sorption on polyethyleneimine (PEI) cryogel and gel beads and fines, we have shown that diffusion limitations in highly swollen beads are very important and result in at least ten-fold underestimation of the sorption rate constants. To account for intraparticle diffusion, we have developed the RCD-diffusion model, which yields "intrinsic" kinetic parameters for the sorbents, even if diffusion limitations were important in kinetic experiments. We have shown that introduction of a new variable-characteristic diffusion time-to the RCD model significantly improved the reliability of sorption kinetic parameters and allowed prediction of the minimal residence time in column required for efficient uptake of the adsorbate under dynamic conditions. The minimal residence time determined from kinetic curves simulated using the RCD-diffusion model was in good agreement with experimental data on breakthrough curves of Cu(II) ion sorption on monolith PEI cryogel at different flow rates.
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Dragan ES, Humelnicu D. Contribution of Cross-Linker and Silica Morphology on Cr(VI) Sorption Performances of Organic Anion Exchangers Embedded into Silica Pores. Molecules 2020; 25:E1249. [PMID: 32164286 PMCID: PMC7179461 DOI: 10.3390/molecules25051249] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 03/05/2020] [Accepted: 03/08/2020] [Indexed: 12/12/2022] Open
Abstract
Removal of Cr(VI) from the environment represents a stringent issue because of its tremendous effects on living organisms. In this context, design of sorbents with high sorption capacity for Cr(VI) is getting a strong need. For this purpose, poly(vinylbenzyl chloride), impregnated into porous silica (PSi), was cross-linked with either N,N,N',N'-tetramethyl-1,2-ethylenediamine (TEMED) or N,N,N',N'-tetramethyl-1,3-propanediamine, followed by the reaction of the free -CH2Cl groups with N,N-diethyl-2-hydroxyethylamine to generate strong base anion exchangers (ANEX) inside the pores. The PSi/ANEX composite sorbents were deeply characterized by FTIR spectroscopy, SEM-energy dispersive X-ray spectroscopy (EDX), thermogravimetric analysis (TGA), and water uptake. The sorption performances of composites against Cr(VI) were investigated as a function of pH, contact time, initial concentration of Cr(VI), and temperature. It was found that the cross-linker structure and the silica morphology are the key factors controlling the sorption capacity. The adsorption process was spontaneous and endothermic and well described by pseudo-second-order kinetic and Sips isotherm models. The maximum sorption capacity of 311.2 mg Cr(VI)/g sorbent was found for the composite prepared with mesoporous silica using TEMED as cross-linker. The PSi/ANEX composite sorbents represent an excellent alternative for the removal of Cr(VI) oxyanions, being endowed with fast kinetics, equilibrium in about 60 min, and a high level of reusability in successive sorption/desorption cycles.
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Affiliation(s)
- Ecaterina Stela Dragan
- “Petru Poni” Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley 41 A, 700487 Iasi, Romania
| | - Doina Humelnicu
- Faculty of Chemistry, “Al. I. Cuza” University of Iasi, Bd. 11 Carol I, 700506 Iasi, Romania;
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Oshchepkov A, Oshchepkov M, Kamagurov S, Redchuk A, Oshchepkova M, Popov K, Kataev E. Fluorescence detection of phosphonates in water by a naphthalimide-based receptor and its derived cryopolymers. NEW J CHEM 2020. [DOI: 10.1039/d0nj01734e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The concentration of compound M in cryopolymers has a dramatic influence on the fluorescence response in the presence of phosphonates.
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Affiliation(s)
| | - Maxim Oshchepkov
- JSC “Fine Chemicals R&D Centre”
- 107258 Moscow
- Russian Federation
- Mendeleev University of Chemical Technology of Russia
- 125047 Moscow
| | - Semen Kamagurov
- JSC “Fine Chemicals R&D Centre”
- 107258 Moscow
- Russian Federation
| | - Anatoly Redchuk
- JSC “Fine Chemicals R&D Centre”
- 107258 Moscow
- Russian Federation
| | - Margarita Oshchepkova
- Mendeleev University of Chemical Technology of Russia
- 125047 Moscow
- Russian Federation
| | | | - Evgeny Kataev
- Department of Chemistry and Pharmacy
- University of Erlangen-Nürnberg
- 91058 Erlangen
- Germany
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