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Kulabhusan PK, Campbell K. Physico-chemical treatments for the removal of cyanotoxins from drinking water: Current challenges and future trends. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 917:170078. [PMID: 38242472 DOI: 10.1016/j.scitotenv.2024.170078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Revised: 01/08/2024] [Accepted: 01/08/2024] [Indexed: 01/21/2024]
Abstract
Cyanobacteria are highly prevalent blue-green algae that grow in stagnant and nutrient-rich water bodies. Environmental conditions, such as eutrophication and human activities, increased the cyanobacterial blooms in freshwater resources worldwide. The excessive bloom formation has also resulted in an alarming surge of cyanobacterial toxins. Prolonged exposure to cyanotoxins is a potential threat to natural ecosystems, animal and human health by the spoilage of the quality of bathing and drinking water. Various molecular and analytical methods have been proposed to monitor their occurrence and understand their global distribution. Moreover, different physical, chemical, and biological approaches have been employed to control cyanobacterial blooms and their toxins to mitigate their occurrence. Numerous strategies have been engaged in drinking water treatment plants (DWTPs). However, the degree of treatment varies greatly and is primarily determined by the source, water properties, and operating parameters such as temperature, pH, and cyanotoxin variants and levels. A comprehensive compilation of methods, from traditional approaches to more advanced oxidation processes (AOPs), are presented for the removal of intracellular and extracellular cyanotoxins. This review discusses the effectiveness of various physicochemical operations and their limitations in a DWTP, for the removal of various cyanotoxins. These operations span from simple to advanced treatment levels with varying degrees of effectiveness and differing costs of implementation. Furthermore, mitigation measures applied in other toxin systems have been considered as alternative strategies.
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Affiliation(s)
- Prabir Kumar Kulabhusan
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, 19 Chlorine Gardens, Belfast, UK BT9 5DL; International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga s/n, 4715-330, Braga, Portugal
| | - Katrina Campbell
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, 19 Chlorine Gardens, Belfast, UK BT9 5DL.
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2
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Wei N, Lv Z, Meng X, Liang Q, Jiang T, Sun S, Li Y, Feng J. Sodium alginate-carboxymethyl chitosan hydrogels loaded with difenoconazole for pH-responsive release to control wheat crown rot. Int J Biol Macromol 2023; 252:126396. [PMID: 37625754 DOI: 10.1016/j.ijbiomac.2023.126396] [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: 04/27/2023] [Revised: 07/15/2023] [Accepted: 08/16/2023] [Indexed: 08/27/2023]
Abstract
Increasing concern about environmental pollution has driven the development of controlled release formulations for agrochemicals. Due to the advantages of degradability and responsiveness to environmental stimuli, polysaccharide-based hydrogel is an ideal carrier for agrochemicals controlled release. In this study, a method-easy polysaccharide hydrogel for controlled release of difenoconazole (DZ) was prepared with sodium alginate (SA) and carboxymethyl chitosan (CMCS). Due to its three-dimensional crosslinked mesh structure, the prepared hydrogels (CSDZ) showed an agrochemical load capacity of 9.03 % and an encapsulation efficiency of 68.64 %. The release rate is faster in alkaline solution, followed by neutral solution, and slowest in an acid environment, which is consistent with the swelling behavior. Furthermore, leaching studies showed that CSDZ hydrogels have excellent protective properties for encapsulated agrochemicals. Compared with technical DZ, the results of in vitro and pot antifungal testing showed that CSDZ had a better control effect against wheat crown rot (Fusarium pseudograminearum). Safety assessment studies indicated that CSDZ hydrogels exhibit good biocompatibility on nontargeted organisms (Daphnia magna, zebrafish and Eisenia fetida) and wheat. This study aims to provide a potentially promising approach for the preparation and application of biocompatible polysaccharide-based hydrogels for agrochemical-controlled release in sustainable disease management.
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Affiliation(s)
- Nuo Wei
- College of Plant Protection, Yangzhou University, Yangzhou 225009, China
| | - Ze Lv
- College of Plant Protection, Yangzhou University, Yangzhou 225009, China
| | - Xiaohan Meng
- College of Plant Protection, Yangzhou University, Yangzhou 225009, China
| | - Qianwei Liang
- College of Plant Protection, Yangzhou University, Yangzhou 225009, China
| | - Tianzhen Jiang
- College of Plant Protection, Yangzhou University, Yangzhou 225009, China
| | - Shaoyang Sun
- College of Plant Protection, Yangzhou University, Yangzhou 225009, China
| | - Yan Li
- College of Plant Protection, Yangzhou University, Yangzhou 225009, China
| | - Jianguo Feng
- College of Plant Protection, Yangzhou University, Yangzhou 225009, China.
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3
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Madian NG, El-Ashmanty BA, Abdel-Rahim HK. Improvement of Chitosan Films Properties by Blending with Cellulose, Honey and Curcumin. Polymers (Basel) 2023; 15:2587. [PMID: 37376233 DOI: 10.3390/polym15122587] [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: 04/30/2023] [Revised: 05/25/2023] [Accepted: 05/27/2023] [Indexed: 06/29/2023] Open
Abstract
Chitosan is a natural biopolymer that can be used in biomedical applications, tissue engineering, and wound dressing because of its biodegradability, biocompatibility, and antibacterial activity. The blending of chitosan films with natural biomaterials such as cellulose, honey, and curcumin was studied at different concentrations in order to improve their physical properties. Fourier transform infrared (FTIR) spectroscopy, mechanical tensile properties, X-ray diffraction (XRD), antibacterial effects, and scanning electron microscopy (SEM) were studied for all blended films. The XRD, FTIR, and mechanical results showed that films blended with curcumin were more rigid and compatible and had higher antibacterial effects than other blended films. In addition, XRD and SEM showed that blending chitosan films with curcumin decreases the crystallinity of the chitosan matrix compared to cellulose and honey blending films due to increased intermolecular hydrogen bonding, which reduces the close packing of the CS matrix.
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Affiliation(s)
- Noha G Madian
- Biophysics Department, Faculty of Science, Cairo University, Giza 12613, Egypt
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4
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Kulkarni SJ. Feedstocks, Synthesis, and Characterization of Cellulosic Materials for Advanced Applications with Emphasis on Microcrystalline Cellulose (MCC). BIONANOSCIENCE 2023. [DOI: 10.1007/s12668-023-01080-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
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5
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Saheed IO, Azeez SO, Suah FBM. Imidazolium based ionic liquids modified polysaccharides for adsorption and solid-phase extraction applications: A review. Carbohydr Polym 2022; 298:120138. [DOI: 10.1016/j.carbpol.2022.120138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Revised: 09/11/2022] [Accepted: 09/18/2022] [Indexed: 11/02/2022]
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6
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Adsorbents Used for Microcystin Removal from Water Sources: Current Knowledge and Future Prospects. Processes (Basel) 2022. [DOI: 10.3390/pr10071235] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The increasing occurrence of toxic cyanobacteria in water sources, driven by climate change and eutrophication, is of great concern worldwide today. Cyanobacterial blooms can negatively affect water bodies and generate harmful secondary metabolites, namely microcystins (MCs), which significantly impair water quality. Various adsorbents used for MC removal from water sources were assessed in this investigation. Activated carbon constitutes the most widely used adsorbent for treating contaminated waters due to its high affinity for adsorbing MCs. Alternative adsorbents have also been proposed and reported to provide higher efficiency, but the studies carried out so far in this regard are still insufficient. The mechanisms implicated in MC adsorption upon different adsorbents should be further detailed for a better optimization of the adsorption process. Certainly, adsorbent characteristics, water pH and temperature are the main factors influencing the adsorption of MCs. In this context, optimization studies must be performed considering the effectiveness, economic aspects associated with each adsorbent. This review provides guidelines for more practical field applications of the adsorption in the treatment of waters actually contaminated with MCs.
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7
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Cazón P, Cazón D, Vázquez M, Guerra-Rodriguez E. Rapid authentication and composition determination of cellulose films by UV-VIS-NIR spectroscopy. Food Packag Shelf Life 2022. [DOI: 10.1016/j.fpsl.2021.100791] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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8
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Gomez-Maldonado D, Reynolds AM, Burnett DJ, Babu RJ, Waters MN, Peresin MS. Delignified wood aerogels as scaffolds coated with an oriented chitosan–cyclodextrin co-polymer for removal of microcystin-LR. RSC Adv 2022; 12:20330-20339. [PMID: 35919592 PMCID: PMC9278526 DOI: 10.1039/d2ra03556a] [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: 06/08/2022] [Accepted: 07/06/2022] [Indexed: 11/21/2022] Open
Abstract
Nano-porous aerogels are an advantageous approach to produce low-density materials with high surface area, particularly when using biobased materials. Frequently, most biobased aerogels are synthesized through a bottom-up approach, which requires high energy inputs to break and rebuild the raw materials, and for elimination of water. To curb this, this work focused on generating aerogels by a top-down approach through the delignification of a wood substrate while eliminating water by solvent exchange. To diversify the surface chemistry for use in water treatment, the delignified wood–nanowood-was coated with a chitosan–cyclodextrin co-polymer and tested in the capture of microcystin-LR. The generated nanowood structure had 75% porosity after coating, with up to 339% water swelling and an adsorption capacity of 0.12 mg g−1 of the microcystin. This top-down technique enables the generation of low-cost aerogels by reducing steps, using a biobased self-assembled coating with hydrophobic active sites, and avoiding costly energetic input. Herein, a preassembled chitosan-cyclodextrin was used as a versatile coating onto delignified wood as an alternative for the removal of microcystin-LR. The addition of β-cyclodextrin proved to allow the nanowood scaffold to adsorb up to 0.12 mg g−1.![]()
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Affiliation(s)
- Diego Gomez-Maldonado
- Forest Products Development Center, College of Forestry, Wildlife and Environment, Auburn University, Auburn, AL 36849, USA
| | - Autumn Marie Reynolds
- Forest Products Development Center, College of Forestry, Wildlife and Environment, Auburn University, Auburn, AL 36849, USA
| | | | | | - Matthew N. Waters
- Department of Crop, Soil and Environmental Sciences, Auburn University, Auburn, AL 36849, USA
| | - Maria S. Peresin
- Forest Products Development Center, College of Forestry, Wildlife and Environment, Auburn University, Auburn, AL 36849, USA
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9
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Adsorption of neutral red dye by chitosan and activated carbon composite films. Heliyon 2021; 7:e07629. [PMID: 34381895 PMCID: PMC8334384 DOI: 10.1016/j.heliyon.2021.e07629] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/04/2021] [Accepted: 07/19/2021] [Indexed: 11/25/2022] Open
Abstract
Research indicates the use of adsorbent materials to remove pollutants from wastewater and effluents, which can be obtained from renewable materials such as biomass, biopolymers (chitosan) or composites. Thus, the objective of this work was to produce and evaluate activated carbon (AC) and chitosan composite films as adsorbents of neutral red dye. AC films were produced using CO2 and water vapor. The variables of the activation process were time (1 and 2 h) and temperature (600 and 750 °C). Five films were produced, with one pure chitosan (T1) film and four activated carbon with chitosan films (T2, T3, T4 and T5). The T2 film refers to activated carbon produced at 600 °C for 1 h + chitosan, T3 to activated carbon produced at 600 °C for 2 h + chitosan, T4 to activated carbon produced at 750 °C for 1 h + chitosan and T5 to activated carbon produced at 750 °C for 2 h + chitosan. The T5 film increased its adsorption capacity by approximately 87% and its removal efficiency of neutral red dye by 43% compared to T1. The presence of activated carbon in the films provided an increase in the adsorption capacity of the neutral red dye.
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10
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Spiridon I, Andrei IM, Anghel N, Dinu MV, Ciubotaru BI. Development and Characterization of Novel Cellulose Composites Obtained in 1-Ethyl-3-methylimidazolium Chloride Used as Drug Delivery Systems. Polymers (Basel) 2021; 13:2176. [PMID: 34209115 PMCID: PMC8271543 DOI: 10.3390/polym13132176] [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: 06/09/2021] [Revised: 06/24/2021] [Accepted: 06/28/2021] [Indexed: 12/14/2022] Open
Abstract
Two polysaccharides (cellulose and chitosan) and polyurethane dissolved in 1-ethyl-3-methylimidazolium chloride represented the matrix for the obtainment of new composite formulations comprised of lignin, ferrite-lignin hybrid and ketoconazole. The mechanical performances (Young's modulus and compressive strength) increased with the filler addition. The nature of the filler used in the studied formulations influenced both bioadhesion and mucoadhesion parameters. It was found that the incorporation of lignin and ferrite-lignin hybrid into the matrix has influenced the in vitro rate of ketoconazole release, which is described by the Korsmeyer-Peppas model. All materials exhibited activity against Gram positive (Staphylococcus aureus ATCC 25923) and Gram negative (Escherichia coli ATCC 25922) bacteria.
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Affiliation(s)
- Iuliana Spiridon
- “Petru Poni” Institute of Macromolecular Chemistry, Grigore Ghica–Vodă 41, 700487 Iasi, Romania; (I.-M.A.); (N.A.); (M.V.D.); (B.-I.C.)
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11
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Gomez-Maldonado D, Filpponen I, Johansson LS, Waters MN, Vega Erramuspe IB, Peresin MS. Environmentally dependent adsorption of 2,4-dichlorophenol on cellulose-chitosan self-assembled composites. Biopolymers 2021; 112:e23434. [PMID: 34000071 DOI: 10.1002/bip.23434] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 04/19/2021] [Accepted: 05/06/2021] [Indexed: 11/07/2022]
Abstract
With the increasing need for bio-based materials developed by environmentally friendly procedures, this work shows a green method to develop shape-controlled structures from cellulose dissolving pulp coated by chitosan. This material was then tested to adsorb a common and widespread pollutant, 2,4-dichlorophenol under different pH conditions (5.5 and 9). Herein it was noticed that the adsorption only occurred in acidic pH (5.5) where electrostatic interaction drove the adsorption, demonstrating the potential to tune the response under desired conditions only. The adsorption was successful in the hydrogel structure with an adsorption capacity of 905 ± 71 mg/g from a solution with 16.6 ppm; furthermore, adsorption was also possible with dried hydrogel structures, presenting a maximum of adsorption of 646 ± 50 mg/g in a similar 16.6 ppm solution. Finally, adsorbent regeneration was successfully tested for both, dry (rewetted) and never-dried states, showing improved adsorption after regeneration in the case of the never dried hydrogel structures.
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Affiliation(s)
- Diego Gomez-Maldonado
- Forest Products Development Center, School of Forestry and Wildlife Science, Auburn University, Auburn, Alabama, USA
| | - Ilari Filpponen
- Forest Products Development Center, School of Forestry and Wildlife Science, Auburn University, Auburn, Alabama, USA.,Department of Chemical Engineering, Alabama Center for Paper and Bioresource Engineering (AC-PABE), Auburn University, Auburn, Alabama, USA
| | - Leena-Sisko Johansson
- Department of Bioprocesses and Biosystems, School of Chemical Engineering, Aalto University, Espoo, Finland
| | - Matthew N Waters
- Department of Crop, Soil and Environmental Sciences, Auburn University, Auburn, Alabama, USA
| | - Iris Beatriz Vega Erramuspe
- Forest Products Development Center, School of Forestry and Wildlife Science, Auburn University, Auburn, Alabama, USA
| | - Maria S Peresin
- Forest Products Development Center, School of Forestry and Wildlife Science, Auburn University, Auburn, Alabama, USA
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12
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Abdelhameed RM, Alzahrani E, Shaltout AA, Moghazy RM. Development of biological macroalgae lignins using copper based metal-organic framework for selective adsorption of cationic dye from mixed dyes. Int J Biol Macromol 2020; 165:2984-2993. [PMID: 33736291 DOI: 10.1016/j.ijbiomac.2020.10.157] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 10/14/2020] [Accepted: 10/20/2020] [Indexed: 12/14/2022]
Abstract
The chemical compositions of macroalgae are protein; cholesterol, fatty acid, and lignin which mostly construct from hydroxyl and amine groups. The lignin as a key structure in the tissues of macroalgae was modified using the sulfation pathway. A novel environmental friendly adsorbent Cu-BTC@Algal was synthesized by incorporated Cu-BTC nanoparticles onto sulphated-Macroalgae biomass under solvothermal conditions and characterized by XRD, FTIR, and N2 adsorption-desorption isotherms. The removal rate of Cu-BTC@Algal was quite greater than that of Cu-BTC, showing that the adsorption performance of porous Cu-BTC can be improved through the modification of algal. Further study revealed that Cu-BTC@Algal exhibited a fast adsorption rate and selective adsorption ability towards the cationic dyes in aqueous solution. The removal rate was up to 97% for cationic dyes methylene blue (MB) and 68% for methyl orange (MO) at intervals 10 min. The influences including initial concentration, and contact time of MB/MO adsorption onto modified algal biomass, Cu-BTC and Cu-BTC@Algal were investigated in detail. The kinetic study indicated that the adsorption of MB/MO onto Cu-BTC@Algal followed the pseudo second-order model. The isotherm obtained from experimental data fitted the Langmuir model, yielding maximum adsorption capacity of 42, 73 and 162 mg g-1 for algal, Cu-BTC and Cu-BTC@Algal, respectively.
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Affiliation(s)
- Reda M Abdelhameed
- Applied Organic Chemistry Department, Chemical Industries Research Division, National Research Centre, 33 EL Buhouth St., Dokki, Giza 12622, Egypt.
| | - Eman Alzahrani
- Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Abdallah A Shaltout
- Spectroscopy Department, Physics Division, National Research Centre, El-Behooth St., Dokki, Cairo 12622, Egypt
| | - Reda M Moghazy
- Water Pollution Research Department, Environmental Research Division, National Research Centre, 33 EL Buhouth St., Dokki, Giza 12622, Egypt
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13
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Recent Advancements in the Removal of Cyanotoxins from Water Using Conventional and Modified Adsorbents—A Contemporary Review. WATER 2020. [DOI: 10.3390/w12102756] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The prevalence of cyanobacteria is increasing in freshwaters due to climate change, eutrophication, and their ability to adapt and thrive in changing environmental conditions. In response to various environmental pressures, they produce toxins known as cyanotoxins, which impair water quality significantly. Prolonged human exposure to cyanotoxins, such as microcystins, cylindrospermopsin, saxitoxins, and anatoxin through drinking water can cause severe health effects. Conventional water treatment processes are not effective in removing these cyanotoxins in water and advanced water treatment processes are often used instead. Among the advanced water treatment methods, adsorption is advantageous compared to other methods because of its affordability and design simplicity for cyanotoxins removal. This article provides a current review of recent developments in cyanotoxin removal using both conventional and modified adsorbents. Given the different cyanotoxins removal capacities and cost of conventional and modified adsorbents, a future outlook, as well as suggestions are provided to achieve optimal cyanotoxin removal through adsorption.
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14
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Silva SS, Gomes JM, Rodrigues LC, Reis RL. Marine-Derived Polymers in Ionic Liquids: Architectures Development and Biomedical Applications. Mar Drugs 2020; 18:E346. [PMID: 32629815 PMCID: PMC7401240 DOI: 10.3390/md18070346] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 06/23/2020] [Accepted: 06/27/2020] [Indexed: 01/05/2023] Open
Abstract
Marine resources have considerable potential to develop high-value materials for applications in different fields, namely pharmaceutical, environmental, and biomedical. Despite that, the lack of solubility of marine-derived polymers in water and common organic solvents could restrict their applications. In the last years, ionic liquids (ILs) have emerged as platforms able to overcome those drawbacks, opening many routes to enlarge the use of marine-derived polymers as biomaterials, among other applications. From this perspective, ILs can be used as an efficient extraction media for polysaccharides from marine microalgae and wastes (e.g., crab shells, squid, and skeletons) or as solvents to process them in different shapes, such as films, hydrogels, nano/microparticles, and scaffolds. The resulting architectures can be applied in wound repair, bone regeneration, or gene and drug delivery systems. This review is focused on the recent research on the applications of ILs as processing platforms of biomaterials derived from marine polymers.
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Affiliation(s)
- Simone S. Silva
- 3B´s Research Group, I3Bs- Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Avepark, 4805-017 Barco, Guimarães, Portugal; (J.M.G.); (L.C.R.); (R.L.R.)
- ICVS/3B´s – PT Government Associate Laboratory, 4805-017 Braga/Guimarães, Portugal
| | - Joana M. Gomes
- 3B´s Research Group, I3Bs- Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Avepark, 4805-017 Barco, Guimarães, Portugal; (J.M.G.); (L.C.R.); (R.L.R.)
- ICVS/3B´s – PT Government Associate Laboratory, 4805-017 Braga/Guimarães, Portugal
| | - Luísa C. Rodrigues
- 3B´s Research Group, I3Bs- Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Avepark, 4805-017 Barco, Guimarães, Portugal; (J.M.G.); (L.C.R.); (R.L.R.)
- ICVS/3B´s – PT Government Associate Laboratory, 4805-017 Braga/Guimarães, Portugal
| | - Rui L. Reis
- 3B´s Research Group, I3Bs- Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Avepark, 4805-017 Barco, Guimarães, Portugal; (J.M.G.); (L.C.R.); (R.L.R.)
- ICVS/3B´s – PT Government Associate Laboratory, 4805-017 Braga/Guimarães, Portugal
- The Discoveries Centre for Regenerative and Precision Medicine, Headquarters at University of Minho, Avepark, 4805-017 Barco, Guimarães, Portugal
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15
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Yadav M, Behera K, Chang YH, Chiu FC. Cellulose Nanocrystal Reinforced Chitosan Based UV Barrier Composite Films for Sustainable Packaging. Polymers (Basel) 2020; 12:E202. [PMID: 31941093 PMCID: PMC7023618 DOI: 10.3390/polym12010202] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Revised: 01/08/2020] [Accepted: 01/10/2020] [Indexed: 02/07/2023] Open
Abstract
In this study, green composite films based on cellulose nanocrystal/chitosan (CNC/CS) were fabricated by solution casting. FTIR, XRD, SEM, and TEM characterizations were conducted to determine the structure and morphology of the prepared films. The addition of only 4 wt.% CNC in the CS film improved the tensile strength and Young's modulus by up to 39% and 78%, respectively. Depending on CNC content, the moisture absorption decreased by 34.1-24.2% and the water solubility decreased by 35.7-26.5% for the composite films compared with neat CS film. The water vapor permeation decreased from 3.83 × 10-11 to 2.41 × 10-11 gm-1 s-1Pa-1 in the CS-based films loaded with (0-8 wt.%) CNC. The water and UV barrier properties of the composite films showed better performance than those of neat CS film. Results suggested that CNC/CS nanocomposite films can be used as a sustainable packaging material in the food industry.
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Affiliation(s)
- Mithilesh Yadav
- Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan 333, Taiwan;
- Department of Chemistry, Prof. Rajendra Singh Institute of Physical Sciences for Study and Research, V.B.S Purvanchal University Jaunpur, Siddikpur U.P. 222002, India
| | - Kartik Behera
- Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan 333, Taiwan;
| | - Yen-Hsiang Chang
- Department of General Dentistry, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan;
- Graduate Institute of Dental and Craniofacial Science, Chang Gung University, Taoyuan 333, Taiwan
| | - Fang-Chyou Chiu
- Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan 333, Taiwan;
- Department of General Dentistry, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan;
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16
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Gomez-Maldonado D, Vega Erramuspe IB, Filpponen I, Johansson LS, Lombardo S, Zhu J, Thielemans W, Peresin MS. Cellulose-Cyclodextrin Co-Polymer for the Removal of Cyanotoxins on Water Sources. Polymers (Basel) 2019; 11:E2075. [PMID: 31842387 PMCID: PMC6960681 DOI: 10.3390/polym11122075] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 12/04/2019] [Accepted: 12/09/2019] [Indexed: 11/26/2022] Open
Abstract
With increasing global water temperatures and nutrient runoff in recent decades, the blooming season of algae lasts longer, resulting in toxin concentrations that exceed safe limits for human consumption and for recreational use. From the different toxins, microcystin-LR has been reported as the main cyanotoxin related to liver cancer, and consequently its abundance in water is constantly monitored. In this work, we report a methodology for decorating cellulose nanofibrils with β-cyclodextrin or with poly(β-cyclodextrin) which were tested for the recovery of microcystin from synthetic water. The adsorption was followed by Quartz Crystal Microbalance with Dissipation monitoring (QCM-D), allowing for real-time monitoring of the adsorption behavior. A maximum recovery of 196 mg/g was obtained with the modified by cyclodextrin. Characterization of the modified substrate was confirmed with Fourier Transform Infrared Spectroscopy (FT-IR), X-ray Photoelectron Spectroscopy (XPS), Thermogravimetric Analysis (TGA), and Atomic Force Microscopy (AFM).
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Affiliation(s)
- Diego Gomez-Maldonado
- Forest Products Development Center, School of Forestry and Wildlife Science, Auburn University, 520 Devall Drive, Auburn, AL 36830, USA; (D.G.-M.); (I.B.V.E.); (I.F.)
| | - Iris Beatriz Vega Erramuspe
- Forest Products Development Center, School of Forestry and Wildlife Science, Auburn University, 520 Devall Drive, Auburn, AL 36830, USA; (D.G.-M.); (I.B.V.E.); (I.F.)
| | - Ilari Filpponen
- Forest Products Development Center, School of Forestry and Wildlife Science, Auburn University, 520 Devall Drive, Auburn, AL 36830, USA; (D.G.-M.); (I.B.V.E.); (I.F.)
- Department of Chemical Engineering, Alabama Center for Paper and Bioresource Engineering (AC-PABE), Auburn University, 358 Ross Hall, Auburn, AL 36849, USA
| | - Leena-Sisko Johansson
- Department of Bioprocesses and Biosystems, Aalto School of Chemical Technology, BIO2, P.O. Box 16100, 02150 Espoo, Finland;
| | - Salvatore Lombardo
- Renewable Materials and Nanotechnology Research Group, Department of Chemical Engineering, KU Leuven, Campus Kulka Kortrijk, Etienne Sabbelaan 53, 8500 Kortrijk, Belgium; (S.L.); (W.T.)
| | - Junyong Zhu
- USDA Forest Products Laboratory, 1 Gifford Pinchot, Madison, WI 53726, USA;
| | - Wim Thielemans
- Renewable Materials and Nanotechnology Research Group, Department of Chemical Engineering, KU Leuven, Campus Kulka Kortrijk, Etienne Sabbelaan 53, 8500 Kortrijk, Belgium; (S.L.); (W.T.)
| | - Maria S. Peresin
- Forest Products Development Center, School of Forestry and Wildlife Science, Auburn University, 520 Devall Drive, Auburn, AL 36830, USA; (D.G.-M.); (I.B.V.E.); (I.F.)
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17
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Becherini S, Mitmoen M, Tran CD. Natural Sporopollenin Microcapsules Facilitated Encapsulation of Phase Change Material into Cellulose Composites for Smart and Biocompatible Materials. ACS APPLIED MATERIALS & INTERFACES 2019; 11:44708-44721. [PMID: 31725254 DOI: 10.1021/acsami.9b15530] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Sporopollenin exine capsules (SECs) are empty microcapsules that are 25 μm in diameter and have extensive networks of ∼200 nm diameter holes obtained by chemically removing all external and internal cytoplastic materials from the natural pollen grains. We have demonstrated that a phase change material (PCM) such as n-eicosane (EIS), a natural paraffin wax, can be successfully encapsulated in the SECs to produce [EIS@SEC]. The high stability and robust nature of SECs retain EIS in the microcavity even during phase transitions, enabling EIS to fully maintain its phase change property while also protecting the EIS from elevated temperatures and corrosive environments. [EIS@SEC] can, therefore, be incorporated into cellulose (CEL) composites with a synthetic process that uses the simple ionic liquid butylmethylimmidazolium chloride to produce [CEL+EIS@SEC] composites. Similar to EIS alone, EIS in the [CEL+EIS@SEC] composites melts when heated and crystallizes when cooled. The energies associated with the crystallization and melting processes enable the [CEL+EIS@SEC] composites to fully exhibit the properties expected of PCMs, i.e., heating the surroundings when they cool and absorbing energy from the surroundings when they warm. The efficiency of latent heat storage and release of [CEL+EIS@SEC] composites was estimated to be around 57% relative to pure EIS. The fact that the DSC curves of the [CEL+EIS@SEC] composites remain the same after going through the heating-melting cycle 220 times clearly indicates that SEC effectively retains EIS in its cavity and protects it from leaking and that the [CEL+EIS@SEC] composites are highly stable and reliable as a phase change material. The [CEL+EIS@SEC] composites are superior to any other available materials based on encapsulated PCM because they are not only robust, reliable, and stable and have strong mechanical properties. They are also are sustainable and biocompatible because as they are synthesized from all naturally abundant materials using a green and recyclable synthesis. These features enable the [CEL+EIS@SEC] composites to be uniquely suited as high performance materials for such uses as dressings to treat burnt wounds, smart textiles for clothing, smart building materials, and energy storage.
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Affiliation(s)
- Stefano Becherini
- Department of Chemistry , Marquette University , P.O. Box 1881, Milwaukee , Wisconsin 53201 , United States
| | - Mark Mitmoen
- Department of Chemistry , Marquette University , P.O. Box 1881, Milwaukee , Wisconsin 53201 , United States
| | - Chieu D Tran
- Department of Chemistry , Marquette University , P.O. Box 1881, Milwaukee , Wisconsin 53201 , United States
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18
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Tuning the rheological properties of cellulosic ionogels reinforced with chitosan: The role of the deacetylation degree. Carbohydr Polym 2019; 207:775-781. [DOI: 10.1016/j.carbpol.2018.12.041] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Accepted: 12/15/2018] [Indexed: 01/06/2023]
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19
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Applications of cellulose and chitin/chitosan derivatives and composites as antibacterial materials: current state and perspectives. Appl Microbiol Biotechnol 2019; 103:1989-2006. [PMID: 30637497 DOI: 10.1007/s00253-018-09602-0] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 12/20/2018] [Accepted: 12/27/2018] [Indexed: 12/18/2022]
Abstract
The bacterial infections have always a serious problem to public health. Scientists are developing new antibacterial materials to overcome this problem. Polysaccharides are promising biopolymers due to their diverse biological functions, low toxicity, and high biodegradability. Chitin and chitosan have antibacterial properties due to their cationic nature, while cellulose/bacterial cellulose does not possess any antibacterial activity. Moreover, the insolubility of chitin in common solvents, the poor solubility of chitosan in water, and the low mechanical properties of chitosan have restricted their biomedical applications. In order to solve these problems, chemical modifications such as quaternization, carboxymethylation, cationization, or surface modification of these polymers with different antimicrobial agents, including metal and metal oxide nanoparticles, are carried out to obtain new materials with improved physiochemical and biological properties. This mini review describes the recent progress in such derivatives and composites with potential antibacterial applications.
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20
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Rahmi. Preparation of chitosan composite film using activated carbon from oil palm empty fruit bunch for Cd2+ removal from water. ACTA ACUST UNITED AC 2018. [DOI: 10.1088/1757-899x/434/1/012092] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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21
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Preparation of polyethylene glycol diglycidyl ether (PEDGE) crosslinked chitosan/activated carbon composite film for Cd2+ removal. Carbohydr Polym 2018; 199:499-505. [DOI: 10.1016/j.carbpol.2018.07.051] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 07/09/2018] [Accepted: 07/16/2018] [Indexed: 11/19/2022]
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22
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Effect of deep eutectic solvent in proton conduction and thermal behaviour of chitosan-based membrane. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.08.102] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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23
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Skwierczyńska M, Runowski M, Goderski S, Szczytko J, Rybusiński J, Kulpiński P, Lis S. Luminescent-Magnetic Cellulose Fibers, Modified with Lanthanide-Doped Core/Shell Nanostructures. ACS OMEGA 2018; 3:10383-10390. [PMID: 31459166 PMCID: PMC6645153 DOI: 10.1021/acsomega.8b00965] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Accepted: 08/15/2018] [Indexed: 05/30/2023]
Abstract
Novel luminescent-magnetic cellulose microfibers were prepared by a dry-wet spinning method with the use of N-methylmorpholine-N-oxide. The synthesized luminescent-magnetic core/shell type nanostructures, based on the lanthanide-doped fluorides and magnetite nanoparticles (NPs)-Fe3O4/SiO2/NH2/PAA/LnF3, were used as nanomodifiers of the fibers. Thanks to the successful incorporation of the bifunctional nanomodifiers into the cellulose structure, the functionalized fibers exhibited superior properties, that is, bright multicolor emission under UV light and strong magnetic response. By the use of the as-prepared fibers, the luminescent-magnetic thread was fabricated and used to sew and make a unique pattern in the glove material, as a proof of concept for advanced, multimodal cloths'/materials' protection against counterfeiting. The presence and uniform distribution of the modifier NPs in the polymer matrix were confirmed by X-ray diffraction, scanning electron microscopy, and energy-dispersive X-ray analysis (EDX). The concentration of the modifier NPs in the fibers was determined by inductively coupled plasma mass spectrometry, EDX, and magnetic measurements. The luminescence characteristics of the materials were examined by photoluminescence spectroscopy, and their magnetic field-responsive behavior was investigated by a superconducting quantum interference device.
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Affiliation(s)
- Małgorzata Skwierczyńska
- Faculty
of Chemistry, Department of Rare Earths, Adam Mickiewicz University, Umultowska 89b, 61-614 Poznan, Poland
| | - Marcin Runowski
- Faculty
of Chemistry, Department of Rare Earths, Adam Mickiewicz University, Umultowska 89b, 61-614 Poznan, Poland
| | - Szymon Goderski
- Faculty
of Chemistry, Department of Rare Earths, Adam Mickiewicz University, Umultowska 89b, 61-614 Poznan, Poland
| | - Jacek Szczytko
- Faculty
of Physics, Institute of Experimental Physics, University of Warsaw, Pasteura 5, 02-093 Warsaw, Poland
| | - Jarosław Rybusiński
- Faculty
of Physics, Institute of Experimental Physics, University of Warsaw, Pasteura 5, 02-093 Warsaw, Poland
| | - Piotr Kulpiński
- Department
of Man-Made Fibers, Technical University
of Lodz, Żeromskiego 116, 90-924 Lodz, Poland
| | - Stefan Lis
- Faculty
of Chemistry, Department of Rare Earths, Adam Mickiewicz University, Umultowska 89b, 61-614 Poznan, Poland
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24
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“Pillaring Effects” in Cross-Linked Cellulose Biopolymers: A Study of Structure and Properties. INT J POLYM SCI 2018. [DOI: 10.1155/2018/6358254] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Modified cellulose materials (CLE-4, CLE-1, and CLE-0.5) were prepared by cross-linking with epichlorohydrin (EP), where the products display variable structure, morphology, and thermal stability. Adsorptive probes such as nitrogen gas and phenolic dyes in aqueous solution reveal that cross-linked cellulose has greater accessible surface area (SA) than native cellulose. The results also reveal that the SA of cross-linked cellulose increased with greater EP content, except for CLE-0.5. The attenuation of SA for CLE-0.5 may relate to surface grafting onto cellulose beyond the stoichiometric cellulose and EP ratio since ca. 30% of the hydroxyl groups of cellulose are accessible for cross-linking reaction due to its tertiary fibril nature. Scanning electron microscopy (SEM) results reveal the variable surface roughness and fibre domains of cellulose due to cross-linking. X-ray diffraction (XRD) and 13C NMR spectroscopy indicate that cellulose adopts a one-chain triclinic unit cell structure (P1 space group) with gauche-trans (gt) and trans-gauche (tg) conformations of the glucosyl linkages and hydroxymethyl groups. The structural characterization results reveal that cross-linking of cellulose occurs at the amorphous domains. By contrast, the crystalline domains are preserved according to similar features in the XRD, FTIR, and 13C NMR spectra of cellulose and its cross-linked forms. This study contributes to an improved understanding of the role of cross-linking of native cellulose in its structure and functional properties. Cross-linked cellulose has variable surface functionality, structure, and textural properties that contribute significantly to their unique physicochemical properties over its native form.
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25
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Udoetok IA, Wilson LD, Headley JV. Ultra-sonication assisted cross-linking of cellulose polymers. ULTRASONICS SONOCHEMISTRY 2018; 42:567-576. [PMID: 29429704 DOI: 10.1016/j.ultsonch.2017.12.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 12/09/2017] [Accepted: 12/10/2017] [Indexed: 05/20/2023]
Abstract
Cross-linked cellulose-epichlorohydrin polymers were synthesized by a conventional heating with stirring (C-EP heating) and a parallel process using ultra-sonication (C-EP sonication) in the presence of aqueous ammonia. Structural characterization of modified cellulose was carried out using FTIR/13C solid state NMR spectroscopy and thermal methods (DSC and TGA). Evidence of products with variable textural properties and morphology was supported by nitrogen gas adsorption, solvent swelling, and microscopy (SEM, TEM) results. C-EP sonication possess greater cross-linker content judging by the loss of the cellulose fibril structure which was facilitated by acoustic cavitation effects due to ultra-sonication. Equilibrium sorption studies in aqueous solution with 2-naphthoxy acetic acid (NAA) revealed that C-EP heating had slightly greater sorption capacity than C-EP sonication at alkaline pH. By contrast, C-EP sonication had greater uptake of NAA at acidic pH. Kinetic uptake studies at pH 3 is described by the pseudo-second order model, where the surface sites of C-EP heating became saturated within ca. 75 min; whereas, ca. 350 min occurred for C-EP sonication. This study demonstrates that the yield of sonication assisted cross-linking of cellulose is greater with improved adsorption properties. The study also reveals the utility of sonication assisted synthesis for the valorization and utilization of cellulose modified materials.
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Affiliation(s)
- Inimfon A Udoetok
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan S7N 5C9, Canada
| | - Lee D Wilson
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan S7N 5C9, Canada.
| | - John V Headley
- Water Science and Technology Directorate, Environment and Climate Change Canada, 11 Innovation Boulevard, Saskatoon, Saskatchewan S7N 3H5, Canada
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26
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Talamini L, Zanato N, Zapp E, Brondani D, Vieira IC. Direct Electrochemical Nano-immunosensor for Microcystin-LR in Seawater. ELECTROANAL 2018. [DOI: 10.1002/elan.201700815] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Lucas Talamini
- Department of Chemistry; Federal University of Santa Catarina, Campus Florianópolis; 88040-900 Florianópolis, SC Brazil
| | - Nicole Zanato
- Department of Chemistry; Federal University of Santa Catarina, Campus Florianópolis; 88040-900 Florianópolis, SC Brazil
| | - Eduardo Zapp
- Department of Exact Science and Education; Federal University of Santa Catarina, Campus Blumenau; 89036-256 Blumenau, SC Brazil
| | - Daniela Brondani
- Department of Exact Science and Education; Federal University of Santa Catarina, Campus Blumenau; 89036-256 Blumenau, SC Brazil
| | - Iolanda Cruz Vieira
- Department of Chemistry; Federal University of Santa Catarina, Campus Florianópolis; 88040-900 Florianópolis, SC Brazil
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27
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Fakhre NA, Ibrahim BM. The use of new chemically modified cellulose for heavy metal ion adsorption. JOURNAL OF HAZARDOUS MATERIALS 2018; 343:324-331. [PMID: 28992570 DOI: 10.1016/j.jhazmat.2017.08.043] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2017] [Revised: 07/28/2017] [Accepted: 08/15/2017] [Indexed: 06/07/2023]
Abstract
We have developed a simple one-step method to synthesize novel supramolecular polysaccharide composite from cellulose (CEL) and dibenzo-18-crown 6 using ceric ammonium nitrate as initiator. The [CEL+DB18C6] composites obtained retain properties of their components, namely superior mechanical strength (from CEL), excellent adsorption capability for heavy metal ions from DB18C6. More importantly, the [CEL+DB18C6] composites exhibit truly supramolecular properties. By itself CEL and DB18C6 can adsorb heavy metals. However, adsorption capability of the composite was substantially and synergistically enhanced by adding DB18C6 to CEL. That is, the removal percentage value for Cd2+, Zn2+, Ni2+, Pb2+ and Cu2+ by [CEL+DB18C6] composites are much higher than removal percentage values of individual CEL and DB18C6 composites. It seems that DB18C6 synergistically interact with CEL to form more stable complexes with heavy metals, and as a consequence, the [CEL+DB18C6] composite can adsorb relatively larger amount heavy metals. The adsorption parameters, such as pH, adsorbent dose, contact time, initial metal ion concentration and temperature were optimized. Desorption studies revealed that the regeneration of modified cellulose saturated with these metallic ions depends on the type and concentration of the regenerating solution (NH4Cl, HNO3, NaCl and CaCl2).
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Affiliation(s)
- Nabil A Fakhre
- Department of Chemistry, College of Education, Salahaddin University - Erbil, Iraq
| | - Bnar M Ibrahim
- Department of Chemistry, College of Science, University of Raparin, Iraq.
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28
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Mian MM, Liu G. Recent progress in biochar-supported photocatalysts: synthesis, role of biochar, and applications. RSC Adv 2018; 8:14237-14248. [PMID: 35540749 PMCID: PMC9079915 DOI: 10.1039/c8ra02258e] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 03/25/2018] [Indexed: 12/15/2022] Open
Abstract
Incorporating photocatalytic nanoparticles with biochar templates can produce biochar-supported photocatalysts (BSPs) and combine the advantages of biochar with catalytic nanoparticles.
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Affiliation(s)
- Md Manik Mian
- CAS Key Laboratory of Crust-Mantle Materials and Environments
- School of Earth and Space Sciences
- University of Science and Technology of China
- Hefei 230026
- China
| | - Guijian Liu
- CAS Key Laboratory of Crust-Mantle Materials and Environments
- School of Earth and Space Sciences
- University of Science and Technology of China
- Hefei 230026
- China
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29
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Tran CD, Makuvaza J, Munson E, Bennett B. Biocompatible Copper Oxide Nanoparticle Composites from Cellulose and Chitosan: Facile Synthesis, Unique Structure, and Antimicrobial Activity. ACS APPLIED MATERIALS & INTERFACES 2017; 9:42503-42515. [PMID: 29152974 DOI: 10.1021/acsami.7b11969] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Copper in various forms has been known to have bactericidal activity. Challenges to its application include preventing mobilization of the copper, to both extend activity and avoid toxicity, and bioincompatibility of many candidate substrates for copper immobilization. Using a simple ionic liquid, butylmethylimmidazolium chloride as the solvent, we developed a facile and green method to synthesize biocompatible composites containing copper oxide nanoparticles (CuONPs) from cellulose (CEL) and chitosan (CS) or CEL and keratin (KER). Spectroscopy and imaging results indicate that CEL, CS, and KER remained chemically intact and were homogeneously distributed in the composites with CuONPs with size of 22 ± 1 nm. Electron paramagnetic resonance (EPR) suggests that some 25% of the EPR-detectable Cu(II) is present as a monomeric species, chemically anchored to the substrate by two or more nitrogen atoms, and, further, adopts a unique spatially oriented conformation when incorporated into the [CEL + CS] composite but not in the [CEL + KER] composite. The remaining 75% of EPR-detectable Cu(II) exhibited extensive spin-spin interactions, consistent with Cu(II) aggregates and Cu(II) on the surface of CuONPs. At higher levels of added copper (>59 nmol/mg), the additional copper was EPR-silent, suggesting an additional phase in larger CuONPs, in which S > 0 spin states are either thermally inaccessible or very fast-relaxing. These data suggest that Cu(II) initially binds substrate via nitrogen atoms, from which CuONPs develop through aggregation of copper. The composites exhibited excellent antimicrobial activity against a wide range of bacteria and fungi, including methicillin-resistant Staphylococcus aureus; vancomycin-resistant Enterococcus; and highly resistant Escherichia coli, Streptococcus agalactiae, Pseudomonas aeruginosa, Stenotrophomonas maltophilia, and Candida albicans. Expectedly, the antibacterial activity was found to be correlated with the CuONPs content in the composites. More importantly, at CuONP concentration of 35 nmol/mg or lower, bactericidal activity of the composite was complemented by its biocompatibility with human fibroblasts.
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Affiliation(s)
- Chieu D Tran
- Department of Chemistry, Marquette University , 535 N. 14th Street, Milwaukee, Wisconsin 53233, United States
| | - James Makuvaza
- Department of Chemistry, Marquette University , 535 N. 14th Street, Milwaukee, Wisconsin 53233, United States
| | - Erik Munson
- Department of Chemistry, Marquette University , 535 N. 14th Street, Milwaukee, Wisconsin 53233, United States
| | - Brian Bennett
- Department of Physics, Marquette University , 540 N. 15th Street, Milwaukee, Wisconsin 53233, United States
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30
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Fan G, Lyu R, Gao X, Liang C, Wang C. MPEG grafted quaternized carboxymethyl chitosan for demulsification of crude oil emulsions. J Appl Polym Sci 2017. [DOI: 10.1002/app.45867] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Guangtan Fan
- Key Laboratory of Green Chemical Process of Ministry of Education, School of Chemical Engineering and Pharmacy; Wuhan Institute of Technology; Wuhan 430205 China
| | - Renliang Lyu
- Key Laboratory of Green Chemical Process of Ministry of Education, School of Chemical Engineering and Pharmacy; Wuhan Institute of Technology; Wuhan 430205 China
| | - Xiao Gao
- Key Laboratory of Green Chemical Process of Ministry of Education, School of Chemical Engineering and Pharmacy; Wuhan Institute of Technology; Wuhan 430205 China
| | - Cheng Liang
- Key Laboratory of Green Chemical Process of Ministry of Education, School of Chemical Engineering and Pharmacy; Wuhan Institute of Technology; Wuhan 430205 China
| | - Cunwen Wang
- Key Laboratory of Novel Reactor and Green Chemical Technology of Hubei Province, School of Chemical Engineering and Pharmacy; Wuhan Institute of Technology; Wuhan 430205 China
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31
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Azria D, Blanquer S, Verdier JM, Belamie E. Nanoparticles as contrast agents for brain nuclear magnetic resonance imaging in Alzheimer's disease diagnosis. J Mater Chem B 2017; 5:7216-7237. [PMID: 32264173 DOI: 10.1039/c7tb01599b] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Nuclear Magnetic Resonance Imaging (MRI) of amyloid plaques is a powerful non-invasive approach for the early and accurate diagnosis of Alzheimer's disease (AD) along with clinical observations of behavioral changes and cognitive impairment. The present article aims at giving a critical and comprehensive review of recent advances in the development of nanoparticle-based contrast agents for brain MRI. Nanoparticles considered for the MRI of AD must comply with a highly stringent set of requirements including low toxicity and the ability to cross the blood-brain-barrier. In addition, to reach an optimal signal-to-noise ratio, they must exhibit a specific ability to target amyloid plaques, which can be achieved by grafting antibodies, peptides or small molecules. Finally, we propose to consider new directions for the future of MRI in the context of Alzheimer's disease, in particular by enhancing the performances of contrast agents and by including therapeutic functionalities following a theranostic strategy.
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Affiliation(s)
- David Azria
- Institut Charles Gerhardt Montpellier, UMR 5253 CNRS-UM-ENSCM, Equipe Matériaux Avancés pour la Catalyse et la Santé, 8 rue de l'Ecole Normale, 34296 Montpellier Cedex 5, France.
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32
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Rahmi, Lelifajri, Julinawati, Shabrina. Preparation of chitosan composite film reinforced with cellulose isolated from oil palm empty fruit bunch and application in cadmium ions removal from aqueous solutions. Carbohydr Polym 2017; 170:226-233. [PMID: 28521990 DOI: 10.1016/j.carbpol.2017.04.084] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 04/05/2017] [Accepted: 04/25/2017] [Indexed: 11/30/2022]
Abstract
Chitosan composite films reinforced with cellulose isolated from oil palm empty fruit bunch had been successfully prepared and applied in cadmium ions removal from aqueous solutions. Cellulose particles were isolated by hydrolyzing oil palm empty fruit bunch with hydrochloric acid. Several compositions were prepared by varying the chitosan/cellulose ratio of composites. The structure and the properties of composites were investigated by Fourier transformed infrared spectroscopy (FTIR), X-ray diffraction (XRD) and mechanical performance measurement. FTIR spectra confirmed that cellulose particles were incorporated into the chitosan matrix. Tensile test results showed that the contents of chitosan and cellulose influenced the mechanical properties of composites. The composite with 10wt% cellulose particles had the highest tensile strength. The X-ray diffraction patterns indicate the crystallinity index of composites decreased with addition of cellulose particles. This low crystallinity is important for metal ions removal in water treatment. Application of composite for cadmium removal from aqueous solutions was done by various solution pH, contact time and concentrations. The adsorption isotherm of Cd ions onto the composite was well fitted to Langmuir equation. Furthermore, the adsorbent still exhibited good adsorption performance after regeneration.
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Affiliation(s)
- Rahmi
- Department of Chemistry, Syiah Kuala University, Banda Aceh, 23111, Indonesia.
| | - Lelifajri
- Department of Chemistry, Syiah Kuala University, Banda Aceh, 23111, Indonesia
| | - Julinawati
- Department of Chemistry, Syiah Kuala University, Banda Aceh, 23111, Indonesia
| | - Shabrina
- Department of Chemistry, Syiah Kuala University, Banda Aceh, 23111, Indonesia
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33
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Zhao Y, Tao C, Xiao G, Su H. Controlled synthesis and wastewater treatment of Ag2O/TiO2 modified chitosan-based photocatalytic film. RSC Adv 2017. [DOI: 10.1039/c6ra27295a] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel Ag2O/TiO2-modified chitosan-based photocatalytic film with high adsorption and photocatalytic activity was synthesized, based upon the coupling of the synergistic catalytic technique of nano Ag2O/TiO2 and membrane separation.
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Affiliation(s)
- Yilin Zhao
- Beijing Key Laboratory of Bioprocess
- Beijing University of Chemical Technology
- Beijing 100029
- PR China
| | - Chengran Tao
- Beijing Key Laboratory of Bioprocess
- Beijing University of Chemical Technology
- Beijing 100029
- PR China
| | - Gang Xiao
- Beijing Key Laboratory of Bioprocess
- Beijing University of Chemical Technology
- Beijing 100029
- PR China
| | - Haijia Su
- Beijing Key Laboratory of Bioprocess
- Beijing University of Chemical Technology
- Beijing 100029
- PR China
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34
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Udoetok IA, Wilson LD, Headley JV. Self-Assembled and Cross-Linked Animal and Plant-Based Polysaccharides: Chitosan-Cellulose Composites and Their Anion Uptake Properties. ACS APPLIED MATERIALS & INTERFACES 2016; 8:33197-33209. [PMID: 27802018 DOI: 10.1021/acsami.6b11504] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Self-assembled and cross-linked chitosan/cellulose glutaraldehyde composite materials (CGC) were prepared with enhanced surface area and variable morphology. FTIR, CHN, and 13C solid state NMR studies provided support for the cross-linking reaction between the amine groups of chitosan and glutaraldehyde; whereas, XRD and TGA studies provided evidence of cellulose-chitosan interactions for the composites. SEM, equilibrium swelling, and nitrogen adsorption studies corroborate the enhanced surface area and variable morphology of the cross-linked biopolymers. Equilibrium sorption studies at alkaline conditions with phenolic dyes, along with single component and mixed naphthenates in aqueous solution revealed variable uptake properties with the composites. The Freundlich isotherm model revealed that the composite at the highest levels of cross-linker, CGC3, had the highest sorption affinity (KF; L mmol/g) for phenolphthalein (phth) followed by ortho-nitrophenyl acetic acid (ONPAA) and para-nitrophenol (PNP), as follows: Phth (5.03 × 10-1) > ONPAA (2.28 × 10-1) > PNP (8.49 × 10-2). The Sips isotherm model provided a good description of the sorption profile of single component and naphthenate mixtures. The monolayer uptake capacity (Qm; mg g-1) is given in parentheses: 2-hexyldecanoic acid (S1; 115 mg/g) > 2-naphthoxyacetic acid (S3; 40.5 mg/g) > trans-4-pentylcyclohexylcarboxylic acid (S2; 13.7 mg/g). By comparison, the Qm values for CGC3 with naphthenate mixtures (24.1 and 27.4 mg/g) according to UV spectroscopy and electrospray ionization mass spectrometry (ESI-HRMS). The sorbent materials generally show greater uptake with naphthenates that possess lower vs higher double bond equivalence (DBE) values. Kinetic studies revealed that the sorption of phth adopted behavior described by the pseudo-second order model, while uptake for S3 and naphthenate mixtures adopted pseudo-first order behavior. This study contributes to a greater understanding of the sorption properties of the two types of abundant biopolymers and their composites by illustrating their tunable sorption properties. The key role of hydrophobic interactions for CGC materials was evidenced by the controlled sorptive uptake of carboxylate anions with variable molecular structure.
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Affiliation(s)
- Inimfon A Udoetok
- Department of Chemistry, University of Saskatchewan , 110 Science Place, Saskatoon, Saskatchewan S7N 5C9, Canada
| | - Lee D Wilson
- Department of Chemistry, University of Saskatchewan , 110 Science Place, Saskatoon, Saskatchewan S7N 5C9, Canada
| | - John V Headley
- Water Science and Technology Directorate, Environment and Climate Change Canada , 11 Innovation Boulevard, Saskatoon, Saskatchewan S7N 3H5, Canada
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Colmenares JC, Varma RS, Lisowski P. Sustainable hybrid photocatalysts: titania immobilized on carbon materials derived from renewable and biodegradable resources. GREEN CHEMISTRY : AN INTERNATIONAL JOURNAL AND GREEN CHEMISTRY RESOURCE : GC 2016; 18:10.1039/c6gc02477g. [PMID: 32665764 PMCID: PMC7359876 DOI: 10.1039/c6gc02477g] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
This review comprises the preparation, properties and heterogeneous photocatalytic applications of TiO2 immobilized on carbon materials derived from earth-abundant, renewable and biodegradable agricultural residues and sea food waste resources. The overview provides key scientific insights into widely used TiO2 supported on carbonaceous materials emanating from biopolymeric materials such as lignin, cellulose, cellulose acetate, bacterial cellulose, bamboo, wood, starch, chitosan and agricultural residues (biochar, charcoal, activated carbon and their magnetic forms, coal fly ash) or seafood wastes namely eggshell, clamshell and fish scales; materials that serve as a support/template for TiO2. Heightened awareness and future inspirational developments for the valorisation of various forms of carbonaceous functional materials is the main objective. This appraisal abridges various strategies available to upgrade renewable carbon-based feedstock via the generation of sustainable TiO2/carbon functional materials and provides remarks on their future prospects. Hopefully, this will stimulate the development of efficient and novel composite photocatalysts and engender the necessary knowledge base for further advancements in greener photocatalytic technologies.
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Affiliation(s)
- Juan Carlos Colmenares
- Institute of Physical Chemistry, Polish Academy of Sciences Kasprzaka 44/52, Warsaw, Poland
| | - Rajender S. Varma
- Sustainable Technology Division, National Risk Management Research Laboratory, US Environmental Protection Agency, 26 West Martin Luther King Drive, MS 443, Cincinnati, Ohio, USA
| | - Paweł Lisowski
- Institute of Physical Chemistry, Polish Academy of Sciences Kasprzaka 44/52, Warsaw, Poland
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Bansal M, Chauhan GS, Kaushik A, Sharma A. Extraction and functionalization of bagasse cellulose nanofibres to Schiff-base based antimicrobial membranes. Int J Biol Macromol 2016; 91:887-94. [DOI: 10.1016/j.ijbiomac.2016.06.045] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Revised: 05/19/2016] [Accepted: 06/14/2016] [Indexed: 10/21/2022]
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Tran CD, Prosenc F, Franko M, Benzi G. Synthesis, structure and antimicrobial property of green composites from cellulose, wool, hair and chicken feather. Carbohydr Polym 2016; 151:1269-1276. [PMID: 27474680 DOI: 10.1016/j.carbpol.2016.06.021] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Revised: 05/06/2016] [Accepted: 06/03/2016] [Indexed: 10/21/2022]
Abstract
Novel composites between cellulose (CEL) and keratin (KER) from three different sources (wool, hair and chicken feather) were successfully synthesized in a simple one-step process in which butylmethylimidazolium chloride (BMIm(+)Cl(-)), an ionic liquid, was used as the sole solvent. The method is green and recyclable because [BMIm(+)Cl(-)] used was recovered for reuse. Spectroscopy (FTIR, XRD) and imaging (SEM) results confirm that CEL and KER remain chemically intact and homogeneously distributed in the composites. KER retains some of its secondary structure in the composites. Interestingly, the minor differences in the structure of KER in wool, hair and feather produced pronounced differences in the conformation of their corresponding composites with wool has the highest α-helix content and feather has the lowest content. These results correlate well with mechanical and antimicrobial properties of the composites. Specifically, adding CEL into KER substantially improves mechanical strength of [CEL+KER] composites made from all three different sources, wool, hair and chicken feathers i.e., [CEL+wool], [CEL+hair] and [CEL+feather]. Since mechanical strength is due to CEL, and CEL has only random structure, [CEL+feather] has, expectedly, the strongest mechanical property because feather has the lowest content of α-helix. Conversely, [CEL+wool] composite has the weakest mechanical strength because wool has the highest α-helix content. All three composites exhibit antibacterial activity against methicillin resistant Staphylococcus aureus (MRSA). The antibacterial property is due not to CEL but to the protein and strongly depends on the type of the keratin, namely, the bactericidal effect is strongest for feather and weakest for wool. These results together with our previous finding that [CEL+KER] composites can control release of drug such as ciprofloxacin clearly indicate that these composites can potentially be used as wound dressing.
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Affiliation(s)
- Chieu D Tran
- Department of Chemistry, Marquette University, P.O. Box 1881, Milwaukee, WI 53201, USA.
| | - Franja Prosenc
- Department of Chemistry, Marquette University, P.O. Box 1881, Milwaukee, WI 53201, USA
| | - Mladen Franko
- Department of Chemistry, Marquette University, P.O. Box 1881, Milwaukee, WI 53201, USA
| | - Gerald Benzi
- Department of Chemistry, Marquette University, P.O. Box 1881, Milwaukee, WI 53201, USA
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Tran CD, Mututuvari TM. Cellulose, Chitosan and Keratin Composite Materials: Facile and Recyclable Synthesis, Conformation and Properties. ACS SUSTAINABLE CHEMISTRY & ENGINEERING 2016; 4:1850-1861. [PMID: 27274950 PMCID: PMC4889018 DOI: 10.1021/acssuschemeng.6b00084] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
A method was developed in which cellulose (CEL) and/or chitosan (CS) were added to keratin (KER) to enable [CEL/CS+KER] composites formed to have better mechanical strength and wider utilization. Butylmethylimmidazolium chloride ([BMIm+Cl-]), an ionic liquid, was used as the sole solvent, and because the majority of [BMIm+Cl-] used (at least 88%) was recovered, the method is green and recyclable. FTIR, XRD, 13C CP-MAS NMR and SEM results confirm that KER, CS and CEL remain chemically intact and distributed homogeneously in the composites. We successfully demonstrate that the widely used method based on the deconvolution of the FTIR bands of amide bonds to determine secondary structure of proteins is relatively subjective as the conformation obtained is strongly dependent on the choice of parameters selected for curve fitting. A new method, based on the partial least squares regression analysis (PLSR) of the amide bands, was developed, and proven to be objective and can provide more accurate information. Results obtained with this method agree well with those by XRD, namely they indicate that although KER retains its second structure when incorporated into the [CEL+CS] composites, it has relatively lower α-helix, higher β-turn and random form compared to that of the KER in native wool. It seems that during dissolution by [BMIm+Cl-], the inter- and intramolecular forces in KER were broken thereby destroying its secondary structure. During regeneration, these interactions were reestablished to reform partially the secondary structure. However, in the presence of either CEL or CS, the chains seem to prefer the extended form thereby hindering reformation of the α-helix. Consequently, the KER in these matrices may adopt structures with lower content of α-helix and higher β-sheet. As anticipated, results of tensile strength and TGA confirm that adding CEL or CS into KER substantially increase the mechanical strength and thermal stability of the [CS/CEL+KER] composites.
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Affiliation(s)
- Chieu D. Tran
- Department of Chemistry, Marquette University, 535 N. 14th Street, Milwaukee, Wisconsin 53233, United States
| | - Tamutsiwa M. Mututuvari
- Department of Chemistry, Marquette University, 535 N. 14th Street, Milwaukee, Wisconsin 53233, United States
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Luo Z, Zhang J, Zhuang C, Tu S, Yin Y, Ye L. An eco-friendly composite adsorbent for efficient removal of Cu2+ from aqueous solution. J Taiwan Inst Chem Eng 2016. [DOI: 10.1016/j.jtice.2015.11.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Ma C, Hu W, Pei H, Xu H, Pei R. Enhancing integrated removal of Microcystis aeruginosa and adsorption of microcystins using chitosan-aluminum chloride combined coagulants: Effect of chemical dosing orders and coagulation mechanisms. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2015.11.056] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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El-Zawahry MM, Abdelghaffar F, Abdelghaffar RA, Hassabo AG. Equilibrium and kinetic models on the adsorption of Reactive Black 5 from aqueous solution using Eichhornia crassipes/chitosan composite. Carbohydr Polym 2016; 136:507-15. [DOI: 10.1016/j.carbpol.2015.09.071] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Revised: 09/06/2015] [Accepted: 09/22/2015] [Indexed: 10/23/2022]
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ÇAĞLAYAN BS, AKSOYLU AE. CO$_{2}$ adsorption behavior and kinetics on chemically modified activated carbons. Turk J Chem 2016. [DOI: 10.3906/kim-1507-95] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Xue C, Wilson LD. Kinetic study on urea uptake with chitosan based sorbent materials. Carbohydr Polym 2015; 135:180-6. [PMID: 26453866 DOI: 10.1016/j.carbpol.2015.08.090] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Revised: 08/26/2015] [Accepted: 08/27/2015] [Indexed: 11/16/2022]
Abstract
A one-pot kinetic uptake study of urea in aqueous solution with various chitosan sorbent materials such as pristine chitosan, cross-linked chitosan with glutaraldehyde from low (C-1) to higher (C-2) glutaraldehyde content, and a Cu(II) complex of a glutaraldehyde cross-linked chitosan material (C-3) is reported herein. The kinetic uptake profiles were analyzed by the pseudo-first order (PFO) and pseudo-second-order (PSO) models, respectively. The uptake rate constant of urea and the sorption capacity (qe) of high molecular weight (HMW) chitosan, C-1, C-2, and C-3 were best described by the PFO model. The uptake rate constant of urea with the various sorbents is listed in ascending order: HMW chitosan<C-1<C-2≈C-3. The qe values (mg urea/g sorbent) for the sorbent/urea systems are listed in ascending order: HMW chitosan (48.1)≈C-1 (44.7)<C-2 (51.3)<C-3 (66.4mg/g), revealing good agreement with uptake values obtained independently at equilibrium conditions. Cross-linked chitosan displays relatively rapid urea uptake and greater adsorption capacity when compared with pristine chitosan. The observed trends are in agreement with the greater surface accessibility and pore structure properties of cross-linked chitosan based on scanning electron microscopy studies. These results further illustrate the rational design of chitosan-based materials for the controlled uptake of urea in aquatic environments.
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Affiliation(s)
- Chen Xue
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan S7N 5C9, Canada
| | - Lee D Wilson
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan S7N 5C9, Canada.
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Kurnia KA, Lima F, Cláudio AFM, Coutinho JAP, Freire MG. Hydrogen-bond acidity of ionic liquids: an extended scale. Phys Chem Chem Phys 2015; 17:18980-90. [PMID: 26129926 PMCID: PMC4579548 DOI: 10.1039/c5cp03094c] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
One of the main drawbacks comprising an appropriate selection of ionic liquids (ILs) for a target application is related to the lack of an extended and well-established polarity scale for these neoteric fluids. Albeit considerable progress has been made on identifying chemical structures and factors that influence the polarity of ILs, there still exists a high inconsistency in the experimental values reported by different authors. Furthermore, due to the extremely large number of possible ILs that can be synthesized, the experimental characterization of their polarity is a major limitation when envisaging the choice of an IL with a desired polarity. Therefore, it is of crucial relevance to develop correlation schemes and a priori predictive methods able to forecast the polarity of new (or not yet synthesized) fluids. In this context, and aiming at broadening the experimental polarity scale available for ILs, the solvatochromic Kamlet-Taft parameters of a broad range of bis(trifluoromethylsulfonyl)imide-([NTf2](-))-based fluids were determined. The impact of the IL cation structure on the hydrogen-bond donating ability of the fluid was comprehensively addressed. Based on the large amount of novel experimental values obtained, we then evaluated COSMO-RS, COnductor-like Screening MOdel for Real Solvents, as an alternative tool to estimate the hydrogen-bond acidity of ILs. A three-parameter model based on the cation-anion interaction energies was found to adequately describe the experimental hydrogen-bond acidity or hydrogen-bond donating ability of ILs. The proposed three-parameter model is also shown to present a predictive capacity and to provide novel molecular-level insights into the chemical structure characteristics that influence the acidity of a given IL. It is shown that although the equimolar cation-anion hydrogen-bonding energies (EHB) play the major role, the electrostatic-misfit interactions (EMF) and van der Waals forces (EvdW) also contribute, admittedly in a lower extent, towards the hydrogen-bond acidity of ILs. The new extended scale provided for the hydrogen-bond acidity of ILs is of high value for the design of new ILs for task-specific applications.
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Affiliation(s)
- Kiki A Kurnia
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal.
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Farrán A, Cai C, Sandoval M, Xu Y, Liu J, Hernáiz MJ, Linhardt RJ. Green solvents in carbohydrate chemistry: from raw materials to fine chemicals. Chem Rev 2015; 115:6811-53. [PMID: 26121409 DOI: 10.1021/cr500719h] [Citation(s) in RCA: 155] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Angeles Farrán
- †Departamento de Química Orgánica y Bio-Orgánica, Facultad de Ciencias, Universidad Nacional de Educación a Distancia, Paseo Senda del Rey 4, 28040 Madrid, Spain
| | - Chao Cai
- ‡Key Laboratory of Marine Drugs of Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Manuel Sandoval
- §Escuela de Química, Universidad Nacional of Costa Rica, Post Office Box 86, 3000 Heredia, Costa Rica
| | - Yongmei Xu
- ∥Division of Chemical Biology and Medicinal Chemistry, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599, United States
| | - Jian Liu
- ∥Division of Chemical Biology and Medicinal Chemistry, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599, United States
| | - María J Hernáiz
- ▽Departamento de Química Orgánica y Farmacéutica, Facultad de Farmacia, Universidad Complutense de Madrid, Pz/Ramón y Cajal s/n, 28040 Madrid, Spain
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Tran CD, Mututuvari TM. Cellulose, chitosan, and keratin composite materials. Controlled drug release. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:1516-26. [PMID: 25548871 PMCID: PMC4318626 DOI: 10.1021/la5034367] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Revised: 12/29/2014] [Indexed: 06/03/2023]
Abstract
A method was developed in which cellulose (CEL) and/or chitosan (CS) were added to keratin (KER) to enable [CEL/CS+KER] composites to have better mechanical strength and wider utilization. Butylmethylimmidazolium chloride ([BMIm(+)Cl(-)]), an ionic liquid, was used as the sole solvent, and because the [BMIm(+)Cl(-)] used was recovered, the method is green and recyclable. Fourier transform infrared spectroscopy results confirm that KER, CS, and CEL remain chemically intact in the composites. Tensile strength results expectedly show that adding CEL or CS into KER substantially increases the mechanical strength of the composites. We found that CEL, CS, and KER can encapsulate drugs such as ciprofloxacin (CPX) and then release the drug either as a single or as two- or three-component composites. Interestingly, release rates of CPX by CEL and CS either as a single or as [CEL+CS] composite are faster and independent of concentration of CS and CEL. Conversely, the release rate by KER is much slower, and when incorporated into CEL, CS, or CEL+CS, it substantially slows the rate as well. Furthermore, the reducing rate was found to correlate with the concentration of KER in the composites. KER, a protein, is known to have secondary structure, whereas CEL and CS exist only in random form. This makes KER structurally denser than CEL and CS; hence, KER releases the drug slower than CEL and CS. The results clearly indicate that drug release can be controlled and adjusted at any rate by judiciously selecting the concentration of KER in the composites. Furthermore, the fact that the [CEL+CS+KER] composite has combined properties of its components, namely, superior mechanical strength (CEL), hemostasis and bactericide (CS), and controlled drug release (KER), indicates that this novel composite can be used in ways which hitherto were not possible, e.g., as a high-performance bandage to treat chronic and ulcerous wounds.
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Affiliation(s)
- Chieu D. Tran
- Department of Chemistry, Marquette University,
P.O. Box 1881, Milwaukee, Wisconsin 53201, United States
| | - Tamutsiwa M. Mututuvari
- Department of Chemistry, Marquette University,
P.O. Box 1881, Milwaukee, Wisconsin 53201, United States
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Vecino X, Devesa-Rey R, Cruz J, Moldes A. Study of the physical properties of calcium alginate hydrogel beads containing vineyard pruning waste for dye removal. Carbohydr Polym 2015; 115:129-38. [DOI: 10.1016/j.carbpol.2014.08.088] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2014] [Revised: 08/05/2014] [Accepted: 08/10/2014] [Indexed: 11/30/2022]
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Xiao G, Su H, Tan T. Synthesis of core-shell bioaffinity chitosan-TiO₂ composite and its environmental applications. JOURNAL OF HAZARDOUS MATERIALS 2015; 283:888-96. [PMID: 25464333 DOI: 10.1016/j.jhazmat.2014.10.047] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Revised: 10/30/2014] [Accepted: 10/31/2014] [Indexed: 05/13/2023]
Abstract
Based on the coupling of molecular imprinting, chitosan biosorption, and nano TiO2 photocatalysis technologies, a novel core-shell organic-inorganic hybrid material of surface imprinted chitosan-TiO2 composite (SICT) was prepared with methyl orange as the template. SEM, EDS, AFM, pore size analysis, and FTIR characterization results illustrated that TiO2 nano powder was successfully coated on the surface of chitosan microparticles via intermolecular hydrogen bonds to form the core-shell organic-inorganic composites with rough and porous surface morphology. SICT showed enhanced photocatalytic selectivity for methyl orange (M.O.) compared with the non-imprinted chitosan-TiO2 composites because of the existing of more suitable sites generated by surface molecular imprinting. The removal of M.O. by SICT was mainly from the photocatalytic degradation rather than simple adsorption. SICT could be reused directly without further desorption and regeneration for 10 cycles with preserving 60% of its photocatalytic efficiency. The reusability of SICT would be beneficial for the simplification of the operating steps and the cost reduction which facilitated its practical applications in wastewater treatment concerning environmental organic pollutants.
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Affiliation(s)
- Gang Xiao
- Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Haijia Su
- Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology, Beijing 100029, PR China.
| | - Tianwei Tan
- Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology, Beijing 100029, PR China
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Duri S, Tran CD. Enantiomeric selective adsorption of amino acid by polysaccharide composite materials. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:642-650. [PMID: 24377940 PMCID: PMC3929103 DOI: 10.1021/la404003t] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A composite containing cellulose (CEL) and chitosan (CS) synthesized by a simple and recyclable method by using butylmethylimmidazolium chloride, an ionic liquid, was found to exhibit remarkable enantiomeric selectivity toward the adsorption of amino acids. The highest adsorption capacity and enantiomeric selectivity are exhibited by 100% CS. A racemic amino acid can be enantiomerically resolved by 100% CS in about 96-120 h. Interestingly, adsorption by 50:50 CEL/CS is more similar to that by 100% CS than to 100% CEL. Specifically, whereas 100% CEL has the lowest adsorption capacity and enantiomeric selectivity, 50:50 CEL/CS has sufficient enantiomeric selectivity to enable it to be used for chiral resolution. This is significant because in spite of its high enantiomeric selectivity 100% CS cannot practically be used because it has relatively poor mechanical properties and undergoes extensive swelling. Adding 50% CEL to CS substantially improves the mechanical properties and reduces its swelling while it retains sufficient enantiomeric selectivity to enable it to be used for routine chiral separations. The kinetic results indicate that the enantiomerically selective adsorption is due not to the initial surface adsorption but rather to the subsequent stage in which the adsorbate molecules diffuse into the pores within the particles of the composites and consequently are adsorbed by the interior of each particle. The strong intermolecular and intramolecular hydrogen bond network in CEL enables it to adopt a very dense structure that makes it difficult for adsorbate molecules to diffuse into its interior, thereby leading to low enantiomeric selectivity. Compared to hydroxy groups, amino groups cannot form strong hydrogen bonds. The hydrogen bond network in CS is not as extensive as in CEL, and its inner structure is relatively less dense than that of CEL. Adsorbate molecules can, therefore, diffuse from the outer surface to its inner structure relatively more easily than in CEL, thereby leading to higher enantiomeric selectivity for 100% CS.
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