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Hajili E, Sugawara A, Uyama H. Application of Hierarchically Porous Chitosan Monolith for Enzyme Immobilization. Biomacromolecules 2024; 25:3486-3498. [PMID: 38718188 DOI: 10.1021/acs.biomac.4c00109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2024]
Abstract
Enzyme immobilization is a crucial technique for improving the stability of enzymes. Compared with free enzymes, immobilized enzymes offer several advantages in industrial applications. Efficient enzyme immobilization requires a technique that integrates the advantages of physical absorption and covalent binding while addressing the limitations of conventional support materials. This study offers a practical approach for immobilizing α-amylase on a hierarchically porous chitosan (CS) monolith. An optimized CS monolith was fabricated using chemically modified chitin by thermally induced phase separation. By combining physical adsorption and covalent bonding, this technique leverages the amino and hydroxy groups present in CS to facilitate effective enzyme binding and stability. α-Amylase immobilized on the CS monolith demonstrated excellent stability, reusability, and increased activity compared to its soluble counterpart across various pH levels and temperatures. In addition, the CS monolith exhibited a significant potential to immobilize other enzymes, namely, lipase and catalase. Immobilized lipase and catalase exhibited higher loading capacities and enhanced activities than their soluble forms. This versatility highlights the broad applicability of CS monoliths as support materials for various enzymatic processes. This study provides guidelines for fabricating hierarchical porous monolith structures that can provide efficient enzyme utilization in flow systems and potentially enhance the cost-effectiveness of enzymes in industrial applications.
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Affiliation(s)
- Emil Hajili
- Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Akihide Sugawara
- Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Hiroshi Uyama
- Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
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2
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Elsayed NH, Alamrani NA, Alatawi RAS, Al-Anazi M, Alenazi DAK, Alhawiti AS, Almutairi AM, Al-Anazi W, Monier M. Ion-imprinted aminoguanidine-chitosan for selective recognition of lanthanum (III) from wastewater. Int J Biol Macromol 2024; 270:132193. [PMID: 38723816 DOI: 10.1016/j.ijbiomac.2024.132193] [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: 02/26/2024] [Revised: 05/03/2024] [Accepted: 05/06/2024] [Indexed: 05/16/2024]
Abstract
Developing a sorbent for the removal of La3+ ions from wastewater offers significant environmental and economic advantages. This study employed an ion-imprinting process to integrate La3+ ions into a newly developed derivative of aminoguanidine-chitosan (AGCS), synthesized via an innovative method. The process initiated with the modification of chitosan by attaching cyanoacetyl groups through amide bonds, yielding cyanoacetyl chitosan (CAC). This derivative underwent further modification with aminoguanidine to produce the chelating AGCS biopolymer. The binding of La3+ ions to AGCS occurred through imprinting and cross-linking with epichlorohydrin (ECH), followed by the extraction of La3+, resulting in the La3+ ion-imprinted sorbent (La-AGCS). Structural confirmation of these chitosan derivatives was established through elemental analysis, FTIR, and NMR. SEM analysis revealed that La-AGCS exhibited a more porous structure compared to the smoother non-imprinted polymer (NIP). La-AGCS demonstrated superior La3+ capture capability, with a maximum capacity of 286 ± 1 mg/g. The adsorption process, fitting the Langmuir and pseudo-second-order models, indicated a primary chemisorption mechanism. Moreover, La-AGCS displayed excellent selectivity for La3+, exhibiting selectivity coefficients ranging from 4 to 13 against other metals. This study underscores a strategic approach in designing advanced materials tailored for La3+ removal, capitalizing on specific chelator properties and ion-imprinting technology.
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Affiliation(s)
- Nadia H Elsayed
- Department of Chemistry, Faculty of Science, University of Tabuk, Tabuk 71421, Saudi Arabia; Center for Renewable Energy and Environmental Technologies, University of Tabuk, Tabuk Saudi Arabia.
| | - Nasser A Alamrani
- Department of Chemistry, Faculty of Science, University of Tabuk, Tabuk 71421, Saudi Arabia
| | - Raedah A S Alatawi
- Department of Chemistry, Faculty of Science, University of Tabuk, Tabuk 71421, Saudi Arabia
| | - Menier Al-Anazi
- Department of Chemistry, Faculty of Science, University of Tabuk, Tabuk 71421, Saudi Arabia
| | - Duna A K Alenazi
- Department of Chemistry, Faculty of Science, University of Tabuk, Tabuk 71421, Saudi Arabia
| | - Aliyah S Alhawiti
- Department of Chemistry, Faculty of Science, University of Tabuk, Tabuk 71421, Saudi Arabia
| | - Abeer M Almutairi
- Physics Department, Faculty of Science, University of Tabuk, 71421, Saudi Arabia
| | - Wejdan Al-Anazi
- Department of Computer of Science, Faculty of computers and information technology, University of Tabuk, Tabuk 71491, Saudi Arabia
| | - M Monier
- Chemistry Department, Faculty of Science, Mansoura University, Mansoura, Egypt
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Choi SJ, Osman A, Kim S, Kang S, Hwang DS. Adsorptive chito-beads for control of membrane fouling. Carbohydr Polym 2024; 327:121642. [PMID: 38171670 DOI: 10.1016/j.carbpol.2023.121642] [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: 09/15/2023] [Revised: 11/15/2023] [Accepted: 11/24/2023] [Indexed: 01/05/2024]
Abstract
Chitosan has excellent antimicrobial, adsorption, heavy metal removal, and adhesion properties, making it a good substitute for microplastic-based cleaners. Here, chitosan microbeads (chito-beads) of various sizes ranging from 32 μm to 283 μm were prepared via emulsion using a liquid on oil method and the feasibility of using them as an essential constituent in a chemical cleaning solution for a reverse-osmosis (RO) membrane-fouling-control process was assessed. Prior to the assessment the cleaning efficiency of a solution containing chito-beads, the interaction energy between chitosan and a representative organic foulant (humic acid (HA)) in a RO membrane fouling was analyzed using colloidal atomic force microscopy, and the strongest attraction between chitosan and HA was observed in an aqueous solution. When comparing the membrane cleaning efficiency of cleaning solutions with and without chito-beads, smaller chito-beads (32 μm and 70 μm) were found to have higher cleaning efficiency. Applications of chito-beads to the membrane cleaning process can enhance the cleaning efficiency through the physicochemical interaction with organic foulants. This study can widen the use of chito-beads as an additive to membrane chemical cleaning solutions to control membrane fouling in other membrane processes as well.
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Affiliation(s)
- Seung-Ju Choi
- Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
| | - Asila Osman
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongsangbuk-do 37673, Republic of Korea; Department of Chemical Engineering, University of Khartoum, Khartoum 11115, Sudan
| | - Sion Kim
- Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
| | - Seoktae Kang
- Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea.
| | - Dong Soo Hwang
- Division of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeonsangbuk-do 37673, Republic of Korea; Institute for Convergence Research and Education in Advanced Technology, Yonsei University International Campus I-CREATE, Incheon 21983, Republic of Korea; ANPOLY, Pohang, Gyeongsanbuk-do 37666, Republic of Korea.
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Aljohani MS, Alnoman RB, Alharbi HY, Bukhari AAH, Monier M. Development and evaluation of thiosalicylic-modified/ion-imprinted chitosan for selective removal of cerium (III) ion. Carbohydr Polym 2024; 326:121620. [PMID: 38142099 DOI: 10.1016/j.carbpol.2023.121620] [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: 10/02/2023] [Revised: 11/15/2023] [Accepted: 11/18/2023] [Indexed: 12/25/2023]
Abstract
Chitosan was used in this study as the bio-based product for the development of microparticles for the specifically targeted removal of cerium ions (Ce3+) by ion-imprinting technology. A thiosalicylic hydrazide-modified chitosan (TSCS) is produced via cyanoacetylation of chitosan, followed by hydrazidine derivatization to finally introduce the thiosalicylate chelating units. Ion-imprinted Ce-TSCS sorbent microparticles were prepared by combining the synthesized TSCS with Ce3+, crosslinking the polymeric Ce3+/TSCS complex with glutaraldehyde, and releasing the chelated Ce3+ using an eluent solution containing a mixture of EDTA and HNO3. Ce-TSCS had a capacity of 164 ± 1 mg/g and better removal selectivity for Ce3+ because it was smart enough to figure out which target ions would fit into the holes made by Ce3+ during the imprinting process. The kinetic data were well suited to a pseudo-second-order model, and the isotherms were well described by the Langmuir model, both of which pointed to chemisorption and adsorption through Ce3+ chelation. XPS and FTIR analyses demonstrate that the predominant adsorption mechanism is the coordination of Ce3+ with the -NH-, -NH2, and -SH chelating units of the thiosalicylic hydrazidine. These findings provide fresh direction for the development of sorbent materials that can effectively and selectively remove Ce3+ from aqueous effluents.
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Affiliation(s)
- Majed S Aljohani
- Chemistry Department, Faculty of Science, Taibah University, Yanbu, Saudi Arabia.
| | - Rua B Alnoman
- Chemistry Department, Faculty of Science, Taibah University, Yanbu, Saudi Arabia
| | - Hussam Y Alharbi
- Chemistry Department, Faculty of Science, Taibah University, Yanbu, Saudi Arabia
| | | | - M Monier
- Chemistry Department, Faculty of Science, Taibah University, Yanbu, Saudi Arabia; Chemistry Department, Faculty of Science, Mansoura University, Mansoura, Egypt.
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5
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Cruz-Balaz MI, Bósquez-Cáceres MF, Delgado AD, Arjona N, Morera Córdova V, Álvarez-Contreras L, Tafur JP. Green Energy Storage: Chitosan-Avocado Starch Hydrogels for a Novel Generation of Zinc Battery Electrolytes. Polymers (Basel) 2023; 15:4398. [PMID: 38006122 PMCID: PMC10675044 DOI: 10.3390/polym15224398] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 11/03/2023] [Accepted: 11/07/2023] [Indexed: 11/26/2023] Open
Abstract
Meeting the ever-increasing global energy demands through sustainable and environmentally friendly means is a paramount challenge. In response to this imperative, this study is dedicated to the development of biopolymer electrolytes, which hold promise for improving the efficiency, safety, and biodegradability of energy systems. The present study aims to evaluate hydrogels synthesized from chitosan biopolymer and starch from avocado seed residues in different ratios, and dried using freeze-thawing and freeze-drying techniques. Epichlorohydrin was used as a chemical crosslinker to create a suitable degree of swelling using an ionic solution. Physical freezing crosslinking strategies such as freezing-thawing and freezing-drying were performed to generate a denser porous structure in the polymer matrix. Subsequently, synthesized electrolytes were immersed in 12 M KOH solution to improve their electrochemical properties. The effect of the different ratios of starch in the hydrogels on the structural properties of the materials was evaluated using characterization techniques such as FTIR and XRD, which allowed to confirm the crosslinking between chitosan and starch. The electrochemical performance of the hydrogels is assessed using electrochemical impedance spectroscopy. A maximum conductivity value of 0.61 S·cm-1 was achieved at room temperature. The designed materials were tested in prototype zinc-air batteries; their specific capacity value was 1618 mA h·g-1, and their obtained power density was 90 mW·cm-2. These substantial findings unequivocally underscore the potential of the synthesized hydrogels as highly promising electrolytes for the application in zinc-air battery systems.
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Affiliation(s)
- María I. Cruz-Balaz
- Grupo de Investigación Aplicada en Materiales y Procesos (GIAMP), School of Chemical Sciences & Engineering, Yachay Tech University, Urcuquí 100115, Ecuador; (M.I.C.-B.); (M.F.B.-C.); (V.M.C.)
| | - María Fernanda Bósquez-Cáceres
- Grupo de Investigación Aplicada en Materiales y Procesos (GIAMP), School of Chemical Sciences & Engineering, Yachay Tech University, Urcuquí 100115, Ecuador; (M.I.C.-B.); (M.F.B.-C.); (V.M.C.)
| | - Anabel D. Delgado
- Centro de Investigación en Materiales Avanzados S.C. (CIMAV), Miguel de Cervantes No. 120, Complejo Industrial Chihuahua, Chihuahua 31136, Mexico;
| | - Noé Arjona
- Centro de Investigación y Desarrollo Tecnológico en Electroquímica S. C., Pedro Escobedo, Querétaro C.P. 76703, Mexico;
| | - Vivian Morera Córdova
- Grupo de Investigación Aplicada en Materiales y Procesos (GIAMP), School of Chemical Sciences & Engineering, Yachay Tech University, Urcuquí 100115, Ecuador; (M.I.C.-B.); (M.F.B.-C.); (V.M.C.)
| | - Lorena Álvarez-Contreras
- Centro de Investigación en Materiales Avanzados S.C. (CIMAV), Miguel de Cervantes No. 120, Complejo Industrial Chihuahua, Chihuahua 31136, Mexico;
| | - Juan P. Tafur
- Grupo de Investigación Aplicada en Materiales y Procesos (GIAMP), School of Chemical Sciences & Engineering, Yachay Tech University, Urcuquí 100115, Ecuador; (M.I.C.-B.); (M.F.B.-C.); (V.M.C.)
- Departamento de Ingeniería Mecánica, Química y Diseño Industrial, Escuela Técnica Superior de Ingeniería y Diseño Industrial (ETSIDI), Universidad Politécnica de Madrid (UPM), Ronda de Valencia 3, 28012 Madrid, Spain
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Wang X, Xu K, Mu L, Zhang X, Huang G, Xing M, Li Z, Wu J. Mussel-Derived Bioadaptive Artificial Tendon Facilitates the Cell Proliferation and Tenogenesis to Promote Tendon Functional Reconstruction. Adv Healthc Mater 2023; 12:e2203400. [PMID: 37462927 DOI: 10.1002/adhm.202203400] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 06/02/2023] [Indexed: 07/28/2023]
Abstract
Tendon injuries range from acute-related trauma to chronic-related injuries are prevalent and bring substantial pain, functional loss, and even disability to the patients. The management of tendon injuries is tricky due to the innate limited regenerative capability of the tendon. Currently, surgical intervention of tendon injuries with artificial tendons remains the standard of care. However, most of artificial tendons are manufactured with synthetic materials, which possess relatively poor biomimetic characteristics and inadequate inherent biodegradability, hence rendering limited cell proliferation and migration for tendon healing. To address these limitations, this work develops a mussel-derived artificial tendon based on double-cross-linked chitosan modification. In this design, decellularized artificial tendon serves as a natural biomimetic scaffold to facilitate the migration and adhesion of tendon repair cells. Additionally, as the cells proliferate, the artificial tendon can be degraded to facilitate tendon regeneration. Moreover, the chitosan cross-linking further enhances the mechanical strength of artificial tendon and offers a controllable degradation. The in vitro and in vivo experimental results demonstrate that mussel-derived artificial tendon not only accelerate the tendon functional reconstruction but also enable harmless clearance at postimplantation. The finding provides a promising alternative to conventional artificial tendons and spurs a new frontier to explore nature-derived artificial tendons.
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Affiliation(s)
- Xiaoyan Wang
- Department of Burn and Plastic Surgery, Shenzhen Institute of Translational Medicine, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, 518035, China
- Department of Burn Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
| | - Kaige Xu
- Department of Burn and Plastic Surgery, Shenzhen Institute of Translational Medicine, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, 518035, China
- Department of Mechanical Engineering, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada
| | - Lan Mu
- Department of Burn and Plastic Surgery, Shenzhen Institute of Translational Medicine, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, 518035, China
| | - Xiaoqi Zhang
- The Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou, Guangdong, 510006, People's Republic of China
| | - Guangtao Huang
- Department of Burn and Plastic Surgery, Shenzhen Institute of Translational Medicine, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, 518035, China
| | - Malcolm Xing
- Department of Mechanical Engineering, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada
| | - Zhibin Li
- Department of Burn and Plastic Surgery, Shenzhen Institute of Translational Medicine, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, 518035, China
| | - Jun Wu
- Department of Burn and Plastic Surgery, Shenzhen Institute of Translational Medicine, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, 518035, China
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Aguiar LG, Siqueira AF. Modeling of Catalyst Deactivation in Humic Acid Degradation. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c00837] [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]
Affiliation(s)
- Leandro G. Aguiar
- Department of Chemical Engineering, Engineering School of Lorena, University of São Paulo, 12602-810 Lorena-SP, Brazil
| | - Adriano F. Siqueira
- Department of Chemical Engineering, Engineering School of Lorena, University of São Paulo, 12602-810 Lorena-SP, Brazil
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Elsayed NH, Monier M, Alatawi RA, Albalawi MA, Alhawiti AS. Preparation of chromium (III) ion-imprinted polymer based on azo dye functionalized chitosan. Carbohydr Polym 2022; 284:119139. [DOI: 10.1016/j.carbpol.2022.119139] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/26/2021] [Accepted: 01/10/2022] [Indexed: 01/11/2023]
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Zhang Y, Wang Y. Electrospun Cellulose-Acetate/Chitosan Fibers for Humic-Acid Removal: Improved Efficiency and Robustness with a Core-Sheath Design. NANOMATERIALS 2022; 12:nano12081284. [PMID: 35457992 PMCID: PMC9026307 DOI: 10.3390/nano12081284] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 04/05/2022] [Accepted: 04/07/2022] [Indexed: 02/04/2023]
Abstract
Recycling biomass waste into functional materials has attracted much attention, and a rational structural design can make more effective use of each component. In our previous work, the fabrication of electrospun cellulose-acetate (CA)/chitosan (CS) adsorbents for humic-acid (HA) removal guided by the intermolecular interaction mechanism was demonstrated. Herein, a core-sheath structure was designed via one-step co-axial electrospinning, where a mixture of CS and CA was employed as the sheath layer to efficiently adsorb HA, and cellulose nanocrystals (CNCs) derived from waste cotton fabrics were incorporated into the CA core as load-bearing components. Compared to the non-layered electrospun CS/CA fibers, all the CS/CA–CNC fibers with a core-sheath structure exhibited smaller diameters, greater homogeneity, and significantly improved mechanical strength. Meanwhile, their maximum adsorption capacities towards HA had no significant differences. Even after the complete hydrolysis of CA into cellulose, the electrospun fibers maintained the fibrous structures and showed a higher tensile strength while exhibiting an acceptable adsorption capacity towards HA. Therefore, this work demonstrates the importance of rational design in the efficient preparation of functional materials and the feasibility of using electrospun core-sheath fibers derived from biomass wastes for the removal of water contaminants.
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Designing of modified ion-imprinted chitosan particles for selective removal of mercury (II) ions. Carbohydr Polym 2022; 286:119207. [DOI: 10.1016/j.carbpol.2022.119207] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/27/2022] [Accepted: 01/28/2022] [Indexed: 12/23/2022]
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Zakharenkova SA, Lebedeva MI, Lebedeva AN, Doroshenko IA, Vlasova KY, Bartoshevich AA, Senyavin VM, Abramchuk SS, Krivtsov GG, Ezhov AA, Podrugina TA, Klyachko NL, Beklemishev MK. Imaging-Guided Delivery of a Hydrophilic Drug to Eukaryotic Cells Based on Its Hydrophobic Ion Pairing with Poly(hexamethylene guanidine) in a Maleated Chitosan Carrier. Molecules 2021; 26:molecules26247426. [PMID: 34946504 PMCID: PMC8703758 DOI: 10.3390/molecules26247426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 12/01/2021] [Accepted: 12/03/2021] [Indexed: 11/30/2022] Open
Abstract
Imaging-guided delivery is developed for hydrophobic drugs, and to a much lesser extent, hydrophilic ones. In this work we have designed a novel strategy for real-time monitoring of hydrophilic drug delivery. Traditionally, the drug and the dye are covalently attached to a nanocarrier or are electrostatically adsorbed. Recently, we found an efficient way to bind the drug by ion-paring with an appropriate counter-ion to form the aggregate that embeds a hydrophobic dye with a considerable fluorescence enhancement. We synthesized a series of carbocyanine dyes of hydrophobicity sufficient for solubilization in hydrophobic ion pairs, which restores their emission in the near-infrared (NIR) region upon the formation of the ternary aggregates. To avoid using toxic surfactants, we applied an amphiphilic polymer-oligomer poly(hexamethylene guanidine) (PHMG) as a counter-ion. Сeftriaxone was used as a model hydrophilic drug ensuring the highest fluorescent signal. The so-formed drug–counter-ion–dye aggregates were encapsulated into a cross-linked maleated chitosan carrier. Confocal laser scanning microscopy (CLSM) studies have demonstrated internalization of the encapsulated model drug by breast adenocarcinoma cells at 40 min after treatment. These results suggest the potential application of hydrophobic ion pairs containing an NIR dye in imaging-guided delivery of hydrophilic compounds.
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Affiliation(s)
- Sofia A. Zakharenkova
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (M.I.L.); (A.N.L.); (I.A.D.); (K.Y.V.); (A.A.B.); (V.M.S.); (T.A.P.); (N.L.K.); (M.K.B.)
- Correspondence:
| | - Marina I. Lebedeva
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (M.I.L.); (A.N.L.); (I.A.D.); (K.Y.V.); (A.A.B.); (V.M.S.); (T.A.P.); (N.L.K.); (M.K.B.)
| | - Alexandra N. Lebedeva
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (M.I.L.); (A.N.L.); (I.A.D.); (K.Y.V.); (A.A.B.); (V.M.S.); (T.A.P.); (N.L.K.); (M.K.B.)
| | - Irina A. Doroshenko
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (M.I.L.); (A.N.L.); (I.A.D.); (K.Y.V.); (A.A.B.); (V.M.S.); (T.A.P.); (N.L.K.); (M.K.B.)
| | - Ksenya Yu Vlasova
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (M.I.L.); (A.N.L.); (I.A.D.); (K.Y.V.); (A.A.B.); (V.M.S.); (T.A.P.); (N.L.K.); (M.K.B.)
- Department of Medical Nanobiotechnology, Pirogov Russian National Research Medical University, 117997 Moscow, Russia
| | - Anastasiya A. Bartoshevich
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (M.I.L.); (A.N.L.); (I.A.D.); (K.Y.V.); (A.A.B.); (V.M.S.); (T.A.P.); (N.L.K.); (M.K.B.)
| | - Vladimir M. Senyavin
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (M.I.L.); (A.N.L.); (I.A.D.); (K.Y.V.); (A.A.B.); (V.M.S.); (T.A.P.); (N.L.K.); (M.K.B.)
| | - Sergey S. Abramchuk
- Laboratory of Physical Chemistry of Polymers, Nesmeyanov Institute of Organoelement Compounds (INEOS RAS), 119991 Moscow, Russia;
| | - George G. Krivtsov
- Mechnikov Research Institute for Vaccines and Sera, 105064 Moscow, Russia;
| | - Alexander A. Ezhov
- Faculty of Physics, Lomonosov Moscow State University, 119991 Moscow, Russia;
| | - Tatyana A. Podrugina
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (M.I.L.); (A.N.L.); (I.A.D.); (K.Y.V.); (A.A.B.); (V.M.S.); (T.A.P.); (N.L.K.); (M.K.B.)
| | - Natalia L. Klyachko
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (M.I.L.); (A.N.L.); (I.A.D.); (K.Y.V.); (A.A.B.); (V.M.S.); (T.A.P.); (N.L.K.); (M.K.B.)
- Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
- Institute “Nanotechnology and Nanomaterials”, G.R. Derzhavin Tambov State University, 392000 Tambov, Russia
| | - Mikhail K. Beklemishev
- Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (M.I.L.); (A.N.L.); (I.A.D.); (K.Y.V.); (A.A.B.); (V.M.S.); (T.A.P.); (N.L.K.); (M.K.B.)
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12
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Karimova NV, Alves MR, Luo M, Grassian VH, Gerber RB. Toward a microscopic model of light absorbing dissolved organic compounds in aqueous environments: theoretical and experimental study. Phys Chem Chem Phys 2021; 23:10487-10497. [PMID: 33899856 DOI: 10.1039/d0cp06554d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Water systems often contain complex macromolecular systems that absorb light. In marine environments, these light absorbing components are often at the air-water interface and can participate in the chemistry of the atmosphere in ways that are poorly understood. Understanding the photochemistry and photophysics of these systems represents a major challenge since their composition and structures are not unique. In this study, we present a successful microscopic model of this light absorbing macromolecular species termed "marine derived chromophoric dissolved organic matter" or "m-CDOM" in water. The approach taken involves molecular dynamics simulations in the ground state using on the fly Density Functional Tight-Binding (DFTB) electronic structure theory; Time Dependent DFTB (TD-DFTB) calculations of excited states, and experimental measurements of the optical absorption spectra in aqueous solution. The theoretical hydrated model shows key features seen in the experimental data for a collected m-CDOM sample. As will be discussed, insights from the model are: (i) the low-energy A-band (at 410 nm) is due to the carbon chains combined with the diol- and the oxy-groups present in the structure; (ii) the weak B-band (at 320-360 nm) appears due to the contribution of the ionized speciated form of m-CDOM; and (iii) the higher-energy C-band (at 280 nm) is due to the two fused ring system. Thus, this is a two-speciated formed model. Although a relatively simple system, these calculations represent an important step in understanding light absorbing compounds found in nature and the search for other microscopic models of related materials remains of major interest.
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Affiliation(s)
- Natalia V Karimova
- Department of Chemistry, University of California, Irvine, CA 92697, USA.
| | - Michael R Alves
- Department of Chemistry and Biochemistry, University of California, San Diego, CA 92093, USA.
| | - Man Luo
- Department of Chemistry and Biochemistry, University of California, San Diego, CA 92093, USA.
| | - Vicki H Grassian
- Department of Chemistry and Biochemistry, University of California, San Diego, CA 92093, USA. and Department of Nanoengineering and Scripps Institution of Oceanography, University of California, San Diego, CA 92093, USA
| | - R Benny Gerber
- Department of Chemistry, University of California, Irvine, CA 92697, USA. and Institute of Chemistry and Fritz Haber Research Center, Hebrew University of Jerusalem, Jerusalem 91904, Israel
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13
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Elsayed NH, Alatawi RAS, Monier M. Amidoxime modified chitosan based ion-imprinted polymer for selective removal of uranyl ions. Carbohydr Polym 2020; 256:117509. [PMID: 33483030 DOI: 10.1016/j.carbpol.2020.117509] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 11/21/2020] [Accepted: 12/09/2020] [Indexed: 12/13/2022]
Abstract
Ion-imprinting strategy was utilized in the development of UO2(II) imprinted amidoxime modified chitosan sorbent (U-AOCS) that can selectively remove UO2(II) from water. First, cyanoactic acid was linked to the chitosan -NH2 groups and then the inserted -CN groups were converted into amidoxime moieties, which chelate the UO2(II) ions and then the polymer chains were cross-linked by glyoxal. The UO2(II) ions have been then eluted leaving their matching recognition sites. The prepared U-AOCS along with the control NIP displayed maximum capacities toward the UO2(II) ions around 332 and 186 mg/g, respectively, and the isotherms were interpreted better by the Langmuir model in both adsorbents. Moreover, the selective uptake of the uranyl ions in multi-ionic aqueous solutions containing the tetravalent Th(IV) ions, trivalent Al(III), Eu(III), and Fe(III) ions, beside the divalent Pb(II), Co(II), Ni(II), Cu(II) ions confirmed the successful creation of a considerable UO2(II) ions selectivity in the U-AOCS construction. In addition, the U-AOCS adsorbent displayed economic feasibility by maintaining around 95 % of its initial efficiency after the regeneration and reuse for 5 adsorption/desorption cycles.
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Affiliation(s)
- Nadia H Elsayed
- Department of Chemistry, University College-Alwajh, University of Tabuk, Tabuk, Saudi Arabia; Department of Polymers and Pigments, National Research Centre, Dokki, Cairo 12311, Egypt.
| | - Raedah A S Alatawi
- Department of Chemistry, Faculty of Science, University of Tabuk, Tabuk 71421, Saudi Arabia
| | - M Monier
- Chemistry Department, Faculty of Science, Mansoura University, Mansoura, Egypt; Chemistry Department, College of Science, Taibah University, Yanbu Branch, Yanbu El-Bahr, Saudi Arabia.
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14
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Dai Y, Zhou L, Tang X, Xi J, Ouyang J, Liu Z, Huang G, Adesina AA. Macroporous ion-imprinted chitosan foams for the selective biosorption of U(VI) from aqueous solution. Int J Biol Macromol 2020; 164:4155-4164. [DOI: 10.1016/j.ijbiomac.2020.08.238] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 08/16/2020] [Accepted: 08/30/2020] [Indexed: 12/24/2022]
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15
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Silane Coupling Agent Modifies the Mechanical Properties of a Chitosan Microfiber. Molecules 2020; 25:molecules25225292. [PMID: 33202787 PMCID: PMC7697876 DOI: 10.3390/molecules25225292] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 11/04/2020] [Accepted: 11/12/2020] [Indexed: 11/17/2022] Open
Abstract
Chitosan microfibers are widely used in medical applications because they have favorable inherent properties. However, their mechanical properties require further improvement. In the present study, a trimethoxysilane aldehyde (TMSA) crosslinking agent was added to chitosan microfibers to improve their tensile strength. The chitosan microfibers were prepared using a coagulation method. The tensile strength of the chitosan microfibers was improved by crosslinking them with TMSA, even when only a small amount was used (less than 1%). TMSA did not change the orientation of the chitosan molecules. Furthermore, aldehyde derived from TMSA did not remain, and siloxane units were formed in the microfibers.
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16
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Islam MA, Morton DW, Johnson BB, Angove MJ. Adsorption of humic and fulvic acids onto a range of adsorbents in aqueous systems, and their effect on the adsorption of other species: A review. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.116949] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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17
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Reshadi MAM, Bazargan A, McKay G. A review of the application of adsorbents for landfill leachate treatment: Focus on magnetic adsorption. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 731:138863. [PMID: 32446150 DOI: 10.1016/j.scitotenv.2020.138863] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 04/17/2020] [Accepted: 04/19/2020] [Indexed: 05/12/2023]
Abstract
Landfill leachate is a significant environmental threat due to the complexity and variety of its pollutants. There are various physical, chemical, and biological treatment methods proposed for leachate treatment. Adsorption with conventional adsorbents such as activated carbon is a process which has been widely employed with relative success. Magnetic adsorbents are a special type of adsorbents with favorable stability, high adsorption capacities, and excellent recycling and reuse capabilities when compared to conventional sorbents. Research regarding the synthesis and use of magnetic adsorbents has been growing at a rapid pace, exhibiting >8-fold increase in publications in the decade of 2010 to 2020. In the current study, both conventional and magnetic adsorbents for landfill leachate treatment have been comprehensively reviewed and discussed. The application of magnetic adsorbents for landfill leachate treatment is relatively new, with numerous avenues of research open to study. Although the production of magnetic adsorbents is significantly more expensive than conventional adsorbents, when taking into consideration all life cycle costs, they are much more competitive than it initially appears. If environmental impacts are of concern, research should shift towards the use of greener chemicals and processes for magnetic adsorbent synthesis, because preliminary analysis of the current synthesis processes shows a much higher environmental impact compared to conventional adsorbents, in particular in terms of global warming potential and energy use.
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Affiliation(s)
| | - Alireza Bazargan
- School of Environment, College of Engineering, University of Tehran, Iran.
| | - Gordon McKay
- Division of Sustainable Development, College of Science and Engineering, Hamad Bin Khalifa University, Education City, Qatar Foundation, Qatar
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18
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Ahsan A, Farooq MA, Parveen A. Thermosensitive Chitosan-Based Injectable Hydrogel as an Efficient Anticancer Drug Carrier. ACS OMEGA 2020; 5:20450-20460. [PMID: 32832798 PMCID: PMC7439394 DOI: 10.1021/acsomega.0c02548] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 07/24/2020] [Indexed: 05/31/2023]
Abstract
A thermosensitive, physically cross-linked injectable hydrogel was formulated for the effective and sustained delivery of disulfiram (DSF) to the cancer cells as there is no hydrogel formulation available until now for the delivery of DSF. As we know, hydrogels have an advantage over other drug delivery systems because of their unique properties, so we proposed to formulate an injectable hydrogel system for the sustained delivery of an anticancer drug (DSF) to cancer cells. To investigate the surface morphology, a scanning electron microscope study was carried out, and for thermal stability of hydrogels, TGA (thermogravimetric analysis) and DSC (differential scanning calorimetry) were performed. The rheological behavior of hydrogels was evaluated with the increasing temperature and time. These developed hydrogels possessing excellent biocompatibility could be injected at room temperature following rapid gel formation at body temperature. The swelling index and in vitro drug release studies were performed at different pH (6.8 and 7.4) and temperatures (25 and 37 °C). The cell viability of the blank hydrogel, free DSF solution, and Ch/DSF (chitosan/DSF)-loaded hydrogel was studied by MTT assay on SMMC-7721 cells for 24 and 48 h, which exhibited higher cytotoxicity in a dose-dependent manner in contrast to the free DSF solution. Moreover, the cellular uptake of DSF-loaded hydrogels was observed stronger as compared with free DSF. Hence, chitosan-based hydrogels loaded with DSF possessing exceptional properties can be used as a novel injectable anticancer drug for the sustained delivery of DSF for long-term cancer therapy.
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Affiliation(s)
- Anam Ahsan
- College
of Animal Science & Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, PR China
| | - Muhammad Asim Farooq
- Department
of Pharmaceutics, School of Pharmacy, China
Pharmaceutical University, Nanjing, Jiangsu 211198, PR China
| | - Amna Parveen
- College
of Pharmacy, Gachon University, Hambakmoero, Yeonsu-gu, Incheon 406-799, Republic
of Korea
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19
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Monier M, Bukhari AAH, Elsayed NH. Designing and characterization of copper (II) ion-imprinted adsorbent based on isatin functionalized chitosan. Int J Biol Macromol 2020; 155:795-804. [DOI: 10.1016/j.ijbiomac.2020.03.215] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 03/15/2020] [Accepted: 03/22/2020] [Indexed: 12/31/2022]
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20
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Yuvaraja G, Chen DY, Pathak JL, Long J, Subbaiah MV, Wen JC, Pan CL. Preparation of novel aminated chitosan schiff’s base derivative for the removal of methyl orange dye from aqueous environment and its biological applications. Int J Biol Macromol 2020; 146:1100-1110. [DOI: 10.1016/j.ijbiomac.2019.09.236] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 08/27/2019] [Accepted: 09/18/2019] [Indexed: 12/18/2022]
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21
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Karimova NV, Luo M, Grassian VH, Gerber RB. Absorption spectra of benzoic acid in water at different pH and in the presence of salts: insights from the integration of experimental data and theoretical cluster models. Phys Chem Chem Phys 2020; 22:5046-5056. [PMID: 32077456 DOI: 10.1039/c9cp06728k] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The absorption spectra of molecular organic chromophores in aqueous media are of considerable importance in environmental chemistry. In this work, the UV-vis spectra of benzoic acid (BA), the simplest aromatic carboxylic acid, in aqueous solutions at varying pH and in the presence of salts are measured experimentally. The solutions of different pH provide insights into the contributions from both the non-dissociated acid molecule and the deprotonated anionic species. The microscopic interpretation of these spectra is then provided by quantum chemical calculations for small cluster models of benzoic species (benzoic acid and benzoate anion) with water molecules. Calculations of the UV-vis absorbance spectra are then carried out for different clusters such as C6H5COOH·(H2O)n and C6H5COO-·(H2O)n, where n = 0-8. The following main conclusions from these calculations and the comparison to experimental results can be made: (i) the small water cluster yields good quantitative agreement with observed solution experiments; (ii) the main peak position is found to be very similar at different levels of theory and is in excellent agreement with the experimental value, however, a weaker feature about 1 eV to lower energy (red shift) of the main peak is correctly reproduced only by using high level of theory, such as Algebraic Diagrammatic Construction (ADC); (iii) dissociation of the BA into ions is found to occur with a minimum of water molecules of n = 8; (iv) the deprotonation of BA has an influence on the computed spectrum and the energetics of the lowest energy electronic transitions; (v) the effect of the water on the spectra is much larger for the deprotonated species than for the non-dissociated acid. It was found that to reproduce experimental spectrum at pH 8.0, additional continuum representation for the extended solvent environment must be included in combination with explicit solvent molecules (n ≥ 3); (vi) salts (NaCl and CaCl2) have minimal effect on the absorption spectrum and; (vii) experimental results showed that B-band of neutral BA is not sensitive to the solvent effects whereas the effect of the water on the C-band is significant. The water effects blue-shift this band up to ∼0.2 eV. Overall, the results demonstrate the ability to further our understanding of the microscopic interpretation of the electronic structure and absorption spectra of BA in aqueous media through calculations restricted to small cluster models.
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Affiliation(s)
- Natalia V Karimova
- Department of Chemistry, University of California, Irvine, CA 92697, USA
| | - Man Luo
- Department of Chemistry and Biochemistry, University of California, San Diego, CA 92093, USA
| | - Vicki H Grassian
- Department of Chemistry and Biochemistry, University of California, San Diego, CA 92093, USA and Department of Nanoengineering and Scripps Institution of Oceanography, University of California, San Diego, CA 92093, USA
| | - R Benny Gerber
- Department of Chemistry, University of California, Irvine, CA 92697, USA and Institute of Chemistry and Fritz Haber Research Center, Hebrew University of Jerusalem, Jerusalem 91904, Israel.
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22
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Khodadadi M, Al-Musawi TJ, Kamranifar M, Saghi MH, Hossein Panahi A. A comparative study of using barberry stem powder and ash as adsorbents for adsorption of humic acid. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:26159-26169. [PMID: 31280444 DOI: 10.1007/s11356-019-05879-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Accepted: 07/01/2019] [Indexed: 06/09/2023]
Abstract
In the present research, investigation of the practical utility of barberry stem powder (BSP) and barberry stem ash (BSA) for humic acid (HA) removal from an aqueous medium by adsorption was carried out. The adsorption process was tested by varying of pH (3-11), reaction time (5-20 min), initial HA concentration (5-40 mg/L), adsorbent dosage (1-4 g/L), and temperature (15-35 °C). The isothermal results revealed that the adsorption process is favorable for both used adsorbents and it is highly described using the Freundlich and Langmuir models (R2 > 0.960). Also, the maximum uptakes of BSP and BSA for HA were 20.220 and 16.950 mg/g at the abovementioned optimized conditions (pH = 7, reaction time = 10 min, temperature = 15 °C, initial HA concentration = 40 mg/L, and adsorbent amount = 1.0 g/L), respectively. The results achieved from the fitting of the experimental data with Dubinin-Radushkevich isotherm model showed that the HA molecules are adsorbed onto the BSP and BSA by physiosorption process. From the thermodynamic study, it appeared that the biosorption process of the HA onto two studied adsorbents was of exothermic nature. The kinetics of the adsorption process of HA has been found to be pseudo-second-order model (R2 = 0.930-0.999). Thus, the results obtained from this paper elucidated that the BSP exhibited higher adsorption capacity in comparison to BSA, for HA removal up to permissible concentrations.
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Affiliation(s)
- Maryam Khodadadi
- Social Determinants of Health Research Center, Birjand University of Medical Sciences, Birjand, Iran
- Medical Toxicology and Drug abuse Research Center (MTDRC), Birjand University of Medical Sciences (BUMS), Birjand, Iran
| | - Tariq J Al-Musawi
- Department of Civil Engineering, Faculty of Engineering, Isra University, Amman, Jordan
| | - Mohammad Kamranifar
- Medical Toxicology and Drug abuse Research Center (MTDRC), Birjand University of Medical Sciences (BUMS), Birjand, Iran
| | - Mohammad Hossein Saghi
- Department of Environmental Health Engineering, School of Public Health, Sabzevar University of Medical Science, Sabzevar, Iran
| | - Ayat Hossein Panahi
- Social Determinants of Health Research Center, Birjand University of Medical Sciences, Birjand, Iran.
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23
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Yaşar AÖ, Kaya İ. A cross-linker containing aldehyde functionalized ionic liquid for chitosan. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2019. [DOI: 10.1080/10601325.2019.1617038] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Alper Ömer Yaşar
- Department of Chemistry, Polymer Synthesis and Analysis Lab, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
| | - İsmet Kaya
- Department of Chemistry, Polymer Synthesis and Analysis Lab, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
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24
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Rosales E, Diaz S, Pazos M, Sanromán MA. Comprehensive strategy for the degradation of anti-inflammatory drug diclofenac by different advanced oxidation processes. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.04.014] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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25
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Production and application of a treated bentonite–chitosan composite for the efficient removal of humic acid from aqueous solution. Chem Eng Res Des 2018. [DOI: 10.1016/j.cherd.2018.10.011] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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26
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Kumari M, Gupta SK. Removal of aromatic and hydrophobic fractions of natural organic matter (NOM) using surfactant modified magnetic nanoadsorbents (MNPs). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:25565-25579. [PMID: 29959738 DOI: 10.1007/s11356-018-2611-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 06/18/2018] [Indexed: 06/08/2023]
Abstract
The present study investigated the potential of surfactant modified magnetic nanoadsorbents (MNPs) for the removal of aromatic and hydrophobic fractions of natural organic matter (NOM), leading to the formation of trihalomethanes (THMs) in chlorinated drinking water. Co-precipitation method was used for the synthesis of MNPs. However, MNPs have a tendency to form an agglomeration. Therefore, polyethylene glycol (PEG) was used as a surface modifier to reduce the agglomeration. The PEG-coated MNPs were characterized by field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), energy-dispersive X-ray analysis (EDX), BET surface area, X-ray diffraction (XRD), Fourier transform spectrometer (FTIR), and zeta (ζ) potential. FESEM observation indicates that PEG-coated MNPs were spherical in shape and 25 nm in size. Zeta potential values (- 58.35 to - 74.9 mV) indicated excellent stability of PEG-MNPs. FTIR spectra indicated the presence of a -CH2 group, responsible for the chemical interaction between aromatic and humic content. Batch experiments were conducted by studying the effect of pH, contact time, and adsorbent dosage on NOM removal. Excellent removal of DOC (94.49%) and UV254 (89.32%) was observed at the optimum dose of adsorbent (0.75 g/L) and at pH 7.0. Adsorption kinetics followed pseudo-second-order reaction (R2, 0.973) and occurs by multilayer chemisorption which is due to the chemical interaction between aromatic and humic compounds of NOM with MNPs. Thus, MNPs showed great potential as a novel adsorbent for the removal of aromatic and hydrophobic compounds of NOM and can significantly be used to curtail the problem of THMs in drinking water supplies.
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Affiliation(s)
- Minashree Kumari
- Department of Environmental Science and Engineering, Indian Institute of Technology (ISM), Dhanbad, Jharkhand, 826004, India.
| | - Sunil Kumar Gupta
- Department of Environmental Science and Engineering, Indian Institute of Technology (ISM), Dhanbad, Jharkhand, 826004, India
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27
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Li X, Zhang W, Xie D, Wang X, Ye W, Liang W. Electrochemical treatment of humic acid using particle electrodes ensembled by ordered mesoporous carbon. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:20071-20083. [PMID: 29748796 DOI: 10.1007/s11356-018-2193-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2018] [Accepted: 04/30/2018] [Indexed: 06/08/2023]
Abstract
In order to degrade the macromolecular pollutant of humic acid, the powder ordered mesoporous carbon (POMC, average pore diameter 4.29 nm) was first applied for preparing the granular OMC (GOMC, Φ × H = 4 × 3-6 mm) as electrodes in a continuous three-dimensional (3D) electrochemical system. The POMC was synthesized by hard-templating method and characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM), particle size distribution, N2 adsorption/desorption technology, and Fourier-transform infrared (FT-IR). The effects of electrochemical degradation parameters, such as current and hydraulic retention time (HRT), were investigated, and the degradation mechanism of HA was explored as well. The results indicated that the degradation efficiency of HA, chemical oxygen demand (COD), and total organic carbon (TOC) reached 95.3, 86.2, and 62.7%, respectively, under initial HA of 100 mg/L, current of 0.2 A, and HRT of 130 min. The detection of electron paramagnetic resonance (EPR) showed that plenty of ˙OH was generated on GOMC electrodes, which made the 3D system more effective than the conventional two-dimensional (2D) system. The cyclic voltammetry curves indicated that the reactions of HA on the OMC materials surface included both direct oxidation and direct reduction.
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Affiliation(s)
- Xue Li
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, No. 35 Tsinghua East Road, Beijing, 100083, People's Republic of China
| | - Wenwen Zhang
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, No. 35 Tsinghua East Road, Beijing, 100083, People's Republic of China
| | - Di Xie
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, No. 35 Tsinghua East Road, Beijing, 100083, People's Republic of China
| | - Xiaoyu Wang
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, No. 35 Tsinghua East Road, Beijing, 100083, People's Republic of China
| | - Wenjian Ye
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, No. 35 Tsinghua East Road, Beijing, 100083, People's Republic of China
| | - Wenyan Liang
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, No. 35 Tsinghua East Road, Beijing, 100083, People's Republic of China.
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28
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Jayalath S, Wu H, Larsen SC, Grassian VH. Surface Adsorption of Suwannee River Humic Acid on TiO 2 Nanoparticles: A Study of pH and Particle Size. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:3136-3145. [PMID: 29384683 DOI: 10.1021/acs.langmuir.8b00300] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
TiO2 nanoparticles are some of the most widely used metal oxide nanomaterials mainly because of their diverse industrial applications. Increasing usage of these nanoparticles raises concerns about the potential adverse effects on the environment. Humic acid is a ubiquitous component of the natural organic matter in the environment that is known to get adsorbed onto nanoparticle surfaces. In this study, adsorption of humic acid on TiO2 nanoparticles of two different sizes (5 and 22 nm) is studied at different environmentally relevant pH values using attenuated total reflectance Fourier transformation infrared spectroscopy. These vibrational spectra provide insights into the nature of the adsorption process (extent of adsorption and reversibility) as a function of pH as well as information about the bonding to the surface. Additionally, the impact of humic acid adsorption on surface charge and agglomeration has been investigated. Interestingly, the results show that the humic acid adsorption is strongly pH-dependent and that adsorption of humic acid on TiO2 nanoparticles alters the extent of agglomeration and modifies the zeta potential and surface charges depending on the pH, thus potentially increasing the bioavailability of TiO2 nanoparticles in the environment.
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Affiliation(s)
- Sanjaya Jayalath
- Department of Chemistry , University of Iowa , Iowa City , Iowa 52242 , United States
| | | | - Sarah C Larsen
- Department of Chemistry , University of Iowa , Iowa City , Iowa 52242 , United States
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29
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Monier M, Abdel-Latif D, Youssef I. Preparation of ruthenium (III) ion-imprinted beads based on 2-pyridylthiourea modified chitosan. J Colloid Interface Sci 2018; 513:266-278. [DOI: 10.1016/j.jcis.2017.11.004] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Revised: 10/30/2017] [Accepted: 11/02/2017] [Indexed: 10/18/2022]
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30
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Liu S, Zhang W, Tan X, Zhao F, Huang W, Du H, Goodman BA, Lei F, Diao K. Performance of a zeolite modified withN,N-dimethyl dehydroabietylamine oxide (DAAO) for adsorption of humic acid assessed in batch and fixed bed columns. RSC Adv 2018; 8:9006-9016. [PMID: 35539834 PMCID: PMC9078647 DOI: 10.1039/c8ra00166a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Accepted: 02/15/2018] [Indexed: 11/21/2022] Open
Abstract
Factors that affect adsorption of a synthetic humic acid (HA) on a zeolite modified with the surfactantN,N-dimethyl dehydroabietylamine oxide (DAAO) (SMZ) were investigated in batch and fixed bed column experiments.
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Affiliation(s)
- Shaogang Liu
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products
- Guangxi Colleges and Universities Key Laboratory of Food Safety and Pharmaceutical Analytical Chemistry
- School of Chemistry and Chemical Engineering
- Guangxi University for Nationalities
- Nanning 530008
| | - Wenzhen Zhang
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products
- Guangxi Colleges and Universities Key Laboratory of Food Safety and Pharmaceutical Analytical Chemistry
- School of Chemistry and Chemical Engineering
- Guangxi University for Nationalities
- Nanning 530008
| | - Xuecai Tan
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products
- Guangxi Colleges and Universities Key Laboratory of Food Safety and Pharmaceutical Analytical Chemistry
- School of Chemistry and Chemical Engineering
- Guangxi University for Nationalities
- Nanning 530008
| | - Fang Zhao
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products
- Guangxi Colleges and Universities Key Laboratory of Food Safety and Pharmaceutical Analytical Chemistry
- School of Chemistry and Chemical Engineering
- Guangxi University for Nationalities
- Nanning 530008
| | - Wanting Huang
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products
- Guangxi Colleges and Universities Key Laboratory of Food Safety and Pharmaceutical Analytical Chemistry
- School of Chemistry and Chemical Engineering
- Guangxi University for Nationalities
- Nanning 530008
| | - Hanchun Du
- Guangxi Center for Analysis and Test Research
- Nanning 530022
- China
| | - Bernard A. Goodman
- College of Physical Science and Engineering
- Guangxi University
- Nanning 530004
- China
| | - Fuhou Lei
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products
- Guangxi Colleges and Universities Key Laboratory of Food Safety and Pharmaceutical Analytical Chemistry
- School of Chemistry and Chemical Engineering
- Guangxi University for Nationalities
- Nanning 530008
| | - Kaisheng Diao
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products
- Guangxi Colleges and Universities Key Laboratory of Food Safety and Pharmaceutical Analytical Chemistry
- School of Chemistry and Chemical Engineering
- Guangxi University for Nationalities
- Nanning 530008
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Kukučka MĐ, Kukučka Stojanović NM. Physically activated charcoal from waste and low-cost biomass: Adsorptive and porosity studies. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2017; 52:1341-1351. [PMID: 28952890 DOI: 10.1080/10934529.2017.1362305] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Different plant raw materials (corn stalk, wheat straw, saw dust, corn cobs, broom grass and Sudan grass) were carbonized and secondary activated in the rotating kiln with the action of water vapor as activation agent under different temperatures and lasting times. Optimum carbonization parameters such as temperature and lasting time were found to be 750°C and 45 min, while optimal conditions for powdered activated carbon obtained by water vapor activation at a temperature of 1,000 C and contact time of 120 min were determined. All obtained activated carbons were distinctly macroporous with mercury intrusion total specific pore volume in the range from 2.04 to 4.86 cm3/g for activated carbons originating from sawdust and broom grass, respectively. Activated carbon prepared from broom grass had the largest specific surface area of 1,190 m2/g. Freundlich, Langmuir, Dubinin-Radushkevitch and Temkin adsorption isotherm models were applied for groundwater humic matter adsorption modeling. Broom grass-originated activated carbon was found to have excellent adsorption affinities toward natural organic matter with regard to the Langmuir model, with maximum adsorption capacity of 90.1 mg TOC/g. The Freundlich isotherm was best fitted with the obtained experimental data. Adsorption experiment followed a physical process as can be seen from heat of sorption of 118.82 J/mol estimated by the Temkin isotherm model, and mean free energy of 0.158 kJ/mol estimated by the Dubinin-Radushkevitch isotherm model.
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Affiliation(s)
- Miroslav Đ Kukučka
- a Research and Development Department, Envirotech d.o.o. , Kikinda , Serbia
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32
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Monier M, Abdel-Latif D. Fabrication of Au(III) ion-imprinted polymer based on thiol-modified chitosan. Int J Biol Macromol 2017; 105:777-787. [DOI: 10.1016/j.ijbiomac.2017.07.098] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Revised: 07/12/2017] [Accepted: 07/15/2017] [Indexed: 11/16/2022]
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Ahmad M, Manzoor K, Ikram S. Versatile nature of hetero-chitosan based derivatives as biodegradable adsorbent for heavy metal ions; a review. Int J Biol Macromol 2017; 105:190-203. [DOI: 10.1016/j.ijbiomac.2017.07.008] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 06/09/2017] [Accepted: 07/02/2017] [Indexed: 10/19/2022]
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Adsorption of Pb(II) ions from aqueous environment using eco-friendly chitosan schiff’s base@Fe 3 O 4 (CSB@Fe 3 O 4 ) as an adsorbent; kinetics, isotherm and thermodynamic studies. Int J Biol Macromol 2017; 105:422-430. [DOI: 10.1016/j.ijbiomac.2017.07.063] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 06/05/2017] [Accepted: 07/10/2017] [Indexed: 11/22/2022]
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He XM, Liang XC, Chen X, Yuan BF, Zhou P, Zhang LN, Feng YQ. High Strength and Hydrophilic Chitosan Microspheres for the Selective Enrichment of N-Glycopeptides. Anal Chem 2017; 89:9712-9721. [DOI: 10.1021/acs.analchem.7b01283] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Xiao-Mei He
- Key
Laboratory of Analytical Chemistry for Biology and Medicine (Ministry
of Education), Department of Chemistry, Wuhan University, Wuhan 430072, P.R. China
| | - Xi-Chao Liang
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P.R. China
| | - Xi Chen
- Wuhan Institute of Biotechnology, Wuhan 430072, P.R. China
| | - Bi-Feng Yuan
- Key
Laboratory of Analytical Chemistry for Biology and Medicine (Ministry
of Education), Department of Chemistry, Wuhan University, Wuhan 430072, P.R. China
| | - Ping Zhou
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P.R. China
| | - Li-Na Zhang
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P.R. China
| | - Yu-Qi Feng
- Key
Laboratory of Analytical Chemistry for Biology and Medicine (Ministry
of Education), Department of Chemistry, Wuhan University, Wuhan 430072, P.R. China
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Liu Z, Zhou S. Removal of humic acid from aqueous solution using polyacrylamide/chitosan semi-IPN hydrogel. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2017; 2017:16-26. [PMID: 29698217 DOI: 10.2166/wst.2018.064] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this study, we provide the first documented removal of humic acid (HA) from aqueous solution using polyacrylamide/chitosan (PAAm/CS) semi-IPN hydrogel. The prepared semi-IPN hydrogel was characterized by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FT-IR). The factors effecting HA adsorption performance were individually tested, including initial pH, ionic strength, contact time, initial HA concentration, and temperature. The results indicated that semi-IPN hydrogel was successfully fabricated and can be applied in a wide pH range, from 3 to 9. Low ionic strength effectively enhanced the adsorption capacity. As the ionic strength increased, this enhancement was less obvious but still positive. The adsorption kinetics were fitted to a pseudo-first-order kinetic model, and the adsorption isotherm was described using the Sips isotherm model. The HA adsorption capacity increased with increasing temperature. The maximum adsorption capacity has the potential to attain 166.30 mg g-1, based on the Sips isotherm at 25 °C. Experiments demonstrated that the HA adsorption process can be primarily attributed to electrostatic interactions, and hydrogen bonding was also involved. Facile synthesis and good adsorptive performance indicate that semi-IPN hydrogel can be used for removing HA from water.
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Affiliation(s)
- Zejun Liu
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, China E-mail:
| | - Shaoqi Zhou
- School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, China E-mail: ; Guizhou Academy of Sciences, Shanxi Road 1, Guiyang 550001, China; State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510641, China; and Key Laboratory of Environmental protection and Eco-remediation of Guangzhou Regular Higher Education Institutions, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, China
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Jawad AH, Azharul Islam M, Hameed B. Cross-linked chitosan thin film coated onto glass plate as an effective adsorbent for adsorption of reactive orange 16. Int J Biol Macromol 2017; 95:743-749. [DOI: 10.1016/j.ijbiomac.2016.11.087] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2016] [Revised: 10/21/2016] [Accepted: 11/20/2016] [Indexed: 11/28/2022]
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Bhatnagar A, Sillanpää M. Removal of natural organic matter (NOM) and its constituents from water by adsorption - A review. CHEMOSPHERE 2017; 166:497-510. [PMID: 27710885 DOI: 10.1016/j.chemosphere.2016.09.098] [Citation(s) in RCA: 135] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2016] [Revised: 09/09/2016] [Accepted: 09/21/2016] [Indexed: 05/05/2023]
Abstract
Natural organic matter (NOM) is produced through metabolic reactions in water supply in drinking water sources and has been reported to cause several problems including objectionable taste and color of water, formation of disinfection by-products (DBPs) and reducing the amount of dissolved oxygen in water. The removal of NOM and its constituents from water is a challenging issue worldwide. Many technologies have been examined for this purpose. The properties and amount of NOM, however, can significantly affect the process efficiency. In the present work, an overview of the recent research studies dealing with adsorption method for the removal of NOM and related compounds from water is presented. A wide variety of conventional and non-conventional adsorbents have been reviewed for their potential in NOM removal from water. As revealed from the literature reviewed, modified adsorbents, composite materials and few nanomaterials have shown promising results for NOM removal from water. The main findings obtained for the removal of NOM using different adsorbents have been discussed in this review.
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Affiliation(s)
- Amit Bhatnagar
- Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland.
| | - Mika Sillanpää
- Laboratory of Green Chemistry, Lappeenranta University of Technology, Sammonkatu 12, Mikkeli 50130, Finland
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Najafi Lahiji M, Keshtkar AR, Moosavian MA. Adsorption of cerium and lanthanum from aqueous solutions by chitosan/polyvinyl alcohol/3-mercaptopropyltrimethoxysilane beads in batch and fixed-bed systems. PARTICULATE SCIENCE AND TECHNOLOGY 2016. [DOI: 10.1080/02726351.2016.1248262] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Mahsa Najafi Lahiji
- Department of Chemical Engineering, Faculty of Engineering, University of Tehran, Tehran, Iran
| | - Ali Reza Keshtkar
- Nuclear Fuel Cycle School, Nuclear Science and Technology Research Institute, Tehran, Iran
| | - Mohammad Ali Moosavian
- Department of Chemical Engineering, Faculty of Engineering, University of Tehran, Tehran, Iran
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Silica-coated magnetite nanoparticles core-shell spheres (Fe 3O 4@SiO 2) for natural organic matter removal. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE AND ENGINEERING 2016; 14:21. [PMID: 27924220 PMCID: PMC5123275 DOI: 10.1186/s40201-016-0262-y] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2016] [Accepted: 11/10/2016] [Indexed: 12/07/2022]
Abstract
Background In this work, the magnetite (Fe3O4) nanoparticles (MNPs) and silica-coated magnetite nanoparticles (SMNPs) were synthesized as adsorbents for removing humic acid (HA) from water resources. Methods The adsorption processes were performed in batch experiments with which the influence of pH, reaction time, adsorbent dosage, initial concentrations of HA and temperature were investigated. Specific techniques were applied to characterize the features of both adsorbents (i. e. TECHNIQUES) (SEM, XRD, TEM, BET, EDX and VSM). Results The maximum saturation magnetization for SMNPs was 30.2 emu/g, which made its separation from the solution by a magnetic field to be easier and faster. The HA adsorption process onto the both adsorbents were best described by the Freundlich isotherm and pseudo-second-order kinetic models. Highest adsorption efficiency of HA by MNPs an d SMNPs occurred at acidic conditions (pH ≈ 3). The mechanisms of adsorption process involved with a physisorption process such as (i. e. hydrogen bonding and electrostatic interaction). The predicted maximum monolayer adsorption capacities obtained by Langmuir isotherm model for MNPs and SMNPs were 96.15 and 196.07 mg/g, respectively. Conclusion Higher amount of HA adsorption onto the surfaces of SMNPs than MNPs surfaces was observed, reflecting that silica impregnated on MNPs enhances the efficiency of the adsorbent in removing HA. Electronic supplementary material The online version of this article (doi:10.1186/s40201-016-0262-y) contains supplementary material, which is available to authorized users.
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Full polysaccharide crosslinked-chitosan and silver nano composites, for use as an antibacterial membrane. CHINESE JOURNAL OF POLYMER SCIENCE 2016. [DOI: 10.1007/s10118-016-1807-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Archana V, Meera S. Begum K, Anantharaman N. Studies on removal of phenol using ionic liquid immobilized polymeric micro-capsules. ARAB J CHEM 2016. [DOI: 10.1016/j.arabjc.2013.03.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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43
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Mahvi AH, Vosoughi M, Mohammadi MJ, Asadi A, Hashemzadeh B, Zahedi A, Pourfadakar S. Sodium Dodecyl Sulfate Modified-Zeolite as a Promising Adsorbent for the Removal of Natural Organic Matter From Aqueous Environments. HEALTH SCOPE 2016. [DOI: 10.17795/jhealthscope-29966] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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Liu T, Sun Y, Wang ZL. Stabilized chitosan/Fe(0)-nanoparticle beads to remove heavy metals from polluted sediments. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2016; 73:1090-1097. [PMID: 26942531 DOI: 10.2166/wst.2015.556] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Sediment contamination by heavy metals has become a widespread problem that can affect the normal behaviors of rivers and lakes. After chitosan/Fe(0)-nanoparticles (CS-NZVI) beads were cross-linked with glutaraldehyde (GLA), their mechanical strength, stability and separation efficiency from the sediment were obviously improved. Moreover, the average aperture size of GLA-CS-NZVI beads was 20.6 μm and NZVI particles were nearly spherical in shape with a mean diameter of 40.2 nm. In addition, the pH showed an insignificant effect on the removal rates from the sediment. Due to the dissolution of metals species into aqueous solutions as an introduction of the salt, the removal rates of all heavy metals from the sediment were increased with an increase of the salinity. The competitive adsorption of heavy metals between the sediment particles and GLA-CS-NZVI beads became stronger as the sediment particles became smaller, leading to decreased removal rates. Therefore, the removal efficiency could be enhanced by optimizing experimental conditions and choosing appropriate materials for the target contaminants.
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Affiliation(s)
- T Liu
- Tianjin Key Laboratory of Water Resources and Environment, Tianjin Normal University, Tianjin 300387, China E-mail:
| | - Y Sun
- Tianjin Key Laboratory of Water Resources and Environment, Tianjin Normal University, Tianjin 300387, China E-mail:
| | - Z L Wang
- Tianjin Key Laboratory of Water Resources and Environment, Tianjin Normal University, Tianjin 300387, China E-mail: ; State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China
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46
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Zulfikar MA, Suri FI, Rusnadi, Setiyanto H, Mufti N, Ledyastuti M, Wahyuningrum D. Fe3O4nano-particles prepared by co-precipitation method using local sands as a raw material and their application for humic acid removal. ACTA ACUST UNITED AC 2015. [DOI: 10.1080/00207233.2015.1108600] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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47
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Pathak SK, Tripathi SC, Singh KK, Mahtele AK, Kumar M, Gandhi PM. Simultaneous separation and purification of plutonium and americium from aqueous nitrate solutions using extractant impregnated macroporous polymeric beads. J Radioanal Nucl Chem 2015. [DOI: 10.1007/s10967-015-4330-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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48
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Sugashini S, Begum KMS, Ramalingam A. Removal of Cr(VI) ions using Fe-loaded chitosan carbonized rice husk composite beads (Fe-CCRCB): Experiment and quantum chemical calculations. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.04.048] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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49
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Wang J, Liu S, Tang W, Ma H. Enhanced Removal of Humic Acid from Aqueous Solution by Adsorption on Surfactant-Modified Palygorskite. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 2015. [DOI: 10.1252/jcej.14we436] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jiahong Wang
- College of Resource and Environment, Shannxi University of Science and Technology
- Shaanxi Research Institute of Agricultural Products Processing Technology, Shannxi University of Science and Technology
| | - Shaochong Liu
- College of Resource and Environment, Shannxi University of Science and Technology
| | - Wei Tang
- Shaanxi Research Institute of Agricultural Products Processing Technology, Shannxi University of Science and Technology
| | - Hongrui Ma
- College of Resource and Environment, Shannxi University of Science and Technology
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