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Salama A, Abou-Zeid RE. Ionic chitosan/silica nanocomposite as efficient adsorbent for organic dyes. Int J Biol Macromol 2021; 188:404-410. [PMID: 34371039 DOI: 10.1016/j.ijbiomac.2021.08.021] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 07/30/2021] [Accepted: 08/02/2021] [Indexed: 11/27/2022]
Abstract
A new adsorbent from chitosan and anionic silica was prepared by ionic interaction followed by sol-gel process. The obtained nanocomposite was characterized by different techniques: FTIR, XRD, SEM/EDX, TGA, and TEM. The results showed that silica precursor interacts with chitosan and deposits as regular spherical nanoparticles. The methylene blue (MB) adsorption by chitosan/silica nanocomposite achieved the adsorption equilibrium within 60 min. The adsorption method is fitted to the pseudo-second-order kinetic model and the Langmuir adsorption model with a maximum adsorption capacity of 847.5 mg/g at slight alkaline solution. Chitosan/silica composite displayed high regeneration capability and recovery of MB up to five cycles without the loss of the adsorption efficiency. The current study showed that as-prepared chitosan/silica nanocomposite is an appropriate material for the adsorption of organic pollutants from wastewater.
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Affiliation(s)
- Ahmed Salama
- Cellulose and Paper Department, National Research Centre, 33 El-Bohouth St., Dokki, P. O. 12622, Giza, Egypt.
| | - Ragab E Abou-Zeid
- Cellulose and Paper Department, National Research Centre, 33 El-Bohouth St., Dokki, P. O. 12622, Giza, Egypt
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Abou-Zeid RE, Kamal KH, Abd El-Aziz ME, Morsi SM, Kamel S. Grafted TEMPO-oxidized cellulose nanofiber embedded with modified magnetite for effective adsorption of lead ions. Int J Biol Macromol 2020; 167:1091-1101. [PMID: 33186652 DOI: 10.1016/j.ijbiomac.2020.11.063] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 11/08/2020] [Accepted: 11/09/2020] [Indexed: 12/19/2022]
Abstract
According to the World Health Organization, nearly a billion people do not have incoming to pure drinking water and much of that water is contaminated with high levels of heavy elements. In this study, adsorption of lead ions has been studied by nanocomposites which prepared through acrylic acid grafting and amino-functionalized magnetized (FM-NPs) TEMPO-oxidized cellulose nanofiber (TEMPO-CNF). The amino-functionalized magnetite was acting as a crosslinked. The crystallinity of TEMPO-CNF was 75 with a 4-10 nm diameter range, while the average particle size of FM-NPs was 30 nm. The adsorption studies illustrated that the elimination efficiency of lead ions was 80% by the prepared nanocomposite that includes a minimum amount of crosslinker (1%), which demonstrated that the magnetic grafted oxidized cellulose nanofiber nanocomposite is a promising green adsorbent material to eliminate heavy metal ions and is additionally easy to get rid of due to its magnetic property. The kinetics and isotherms studied found that the sorption reaction follows a pseudo-second-order model (R2 = 0.997) and Freundlich model (R2 = 0.993), respectively, this indicated that the adsorption of lead ion occurs within the pores and via the functional groups present on the nanocomposite.
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Affiliation(s)
- Ragab E Abou-Zeid
- Cellulose and Paper Department, National Research Centre, 33 El Bohouth St., Dokki, Giza, P.O. 12622, Egypt
| | - Kholod H Kamal
- Water Pollution Research Department, National Research Centre, 33 El Bohouth St., Dokki, Giza, P.O. 12622, Egypt
| | - M E Abd El-Aziz
- Polymers and Pigments Department, National Research Centre, 33 El Bohouth St., Dokki, Giza, P.O. 12622, Egypt.
| | - S M Morsi
- Polymers and Pigments Department, National Research Centre, 33 El Bohouth St., Dokki, Giza, P.O. 12622, Egypt
| | - Samir Kamel
- Cellulose and Paper Department, National Research Centre, 33 El Bohouth St., Dokki, Giza, P.O. 12622, Egypt
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Salama A, Abou-Zeid RE, Cruz-Maya I, Guarino V. Soy protein hydrolysate grafted cellulose nanofibrils with bioactive signals for bone repair and regeneration. Carbohydr Polym 2020; 229:115472. [PMID: 31826419 DOI: 10.1016/j.carbpol.2019.115472] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 08/29/2019] [Accepted: 10/13/2019] [Indexed: 01/10/2023]
Abstract
TEMPO oxidized cellulose nanofibers (T-CNF) were prepared from cellulose pulp which is extracted from bagasse. Soy protein hydrolysate (SPH) was grafted on T-CNF via amidation of carboxylic groups. Biomineralization was, then, assessed via calcium phosphates (CaP) precipitation in twice-simulated body fluid until formation of a new bioactive material. Protein was efficiently grafted without alteration of morphology and nanofibrils packing as reported by Fourier Transform infrared analysis /X Ray Diffraction /Scanning and Transmission Electron Microscopy / Atomic Force Microscopy. Highly crystalline calcium phosphate deposits - ca. 22.1% - were detected, with a Ca/P ratio equal to 1.63, in agreement with native bone apatite composition. In vitro response of human Mesenchymal Stem Cells confirmed the biocompatibility. No significant differences in terms of cell adhesion were recognized while a significant increase in cell proliferation was detected until 7 days. The presence of calcium phosphates tends to cover the nanofibrillar pattern, inducing the inhibition of cell proliferation and promoting the ex-novo precipitation of mineral phases. All the results suggest a promising use of these biomaterials in the repair and/or the regeneration of hard tissues such as bone.
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Affiliation(s)
- Ahmed Salama
- Cellulose and Paper Department, National Research Center, 33 El-Bohouth St., Dokki, P.O. 12622, Giza, Egypt.
| | - Ragab E Abou-Zeid
- Cellulose and Paper Department, National Research Center, 33 El-Bohouth St., Dokki, P.O. 12622, Giza, Egypt
| | - Iriczalli Cruz-Maya
- Institute of Polymers, Composites and Biomaterials, National Research Council of Italy, Mostra d'Oltremare, Pad.20, Naples, Italy; Department of Chemical, Materials and Industrial Production Engineering, University of Naples Federico II, Naples, Italy
| | - Vincenzo Guarino
- Institute of Polymers, Composites and Biomaterials, National Research Council of Italy, Mostra d'Oltremare, Pad.20, Naples, Italy.
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Abou-Zeid RE, Awwad NS, Nabil S, Salama A, Youssef MA. Oxidized alginate/gelatin decorated silver nanoparticles as new nanocomposite for dye adsorption. Int J Biol Macromol 2019; 141:1280-1286. [DOI: 10.1016/j.ijbiomac.2019.09.076] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Revised: 08/26/2019] [Accepted: 09/09/2019] [Indexed: 12/18/2022]
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El-Gendy A, Abou-Zeid RE, Salama A, Diab M, El-Sakhawy M. TEMPO-oxidized cellulose nanofibers/polylactic acid/TiO2 as antibacterial bionanocomposite for active packaging. Egypt J Chem 2017. [DOI: 10.21608/ejchem.2017.1835.1153] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Salama A, Abou-Zeid RE, El-Sakhawy M, El-Gendy A. Carboxymethyl cellulose/silica hybrids as templates for calcium phosphate biomimetic mineralization. Int J Biol Macromol 2015; 74:155-61. [DOI: 10.1016/j.ijbiomac.2014.11.041] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Revised: 11/20/2014] [Accepted: 11/22/2014] [Indexed: 11/27/2022]
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El-Wakil NA, Hassan EA, Abou-Zeid RE, Dufresne A. Development of wheat gluten/nanocellulose/titanium dioxide nanocomposites for active food packaging. Carbohydr Polym 2015; 124:337-46. [PMID: 25839828 DOI: 10.1016/j.carbpol.2015.01.076] [Citation(s) in RCA: 117] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Revised: 01/22/2015] [Accepted: 01/30/2015] [Indexed: 12/12/2022]
Abstract
Bionanocomposites were developed by casting/evaporation of wheat gluten (WG), cellulose nanocrystals (CNC), and TiO2 nanoparticles. The effect of addition of different percentages of CNC, and TiO2 on tensile strength (TS), Young's modulus and water sensitivity was studied. A significant improvement in the studied properties is observed when 7.5% CNC and 0.6% TiO2 is added to WG. WG/CNC 7.5%/0.6% TiO2 blend suspension was chosen to coat commercial packaging unbleached kraft paper sheets via 1, 2 and 3 coating layers. A significant enhancement of 56% and 53% in breaking length and burst index, respectively, was achieved for 3 layers coated paper. The antimicrobial activity of the coated papers, against Saccharomyces cervisiae, Gram-negative bacteria Escherichia coli and Gram-positive bacteria Staphylococcus aureus, was investigated and expressed in terms of reduction % of surviving number (CFU) of the tested organisms. More than 98.5% reduction in CFU was observed against the organisms compared to TiO2-free coated paper.
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Affiliation(s)
- Nahla A El-Wakil
- Cellulose and Paper Department, National Research Centre, 33 Bohouth st., Dokki, Giza 12622, Egypt
| | - Enas A Hassan
- Cellulose and Paper Department, National Research Centre, 33 Bohouth st., Dokki, Giza 12622, Egypt.
| | - Ragab E Abou-Zeid
- Cellulose and Paper Department, National Research Centre, 33 Bohouth st., Dokki, Giza 12622, Egypt
| | - Alain Dufresne
- Grenoble Institute of Technology (Grenoble INP), The International School of Paper, Print Media and Biomaterials (Pagora), CS10065, 38402 Saint Martin d'Hères Cedex, France
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Fahmy Y, El-Wakil NA, El-Gendy AA, Abou-Zeid RE, Youssef MA. Plant proteins as binders in cellulosic paper composites. Int J Biol Macromol 2010; 47:82-5. [PMID: 20361995 DOI: 10.1016/j.ijbiomac.2010.03.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2010] [Accepted: 03/23/2010] [Indexed: 11/26/2022]
Abstract
Plant proteins are used - for the first time - in this work as bulk binders for cellulosic fibers in paper composites. Soy bean protein and wheat gluten were denatured by two methods, namely by: urea+NaOH and by urea+NaOH+acrylamide. Addition of increased amounts of the denatured proteins resulted in a significant increase in all paper strength properties. Soy protein led, in addition, to a remarkable enhancement in opacity. The use of proteins increased kaolin retention in the paper composites, while keeping the paper strength higher than the blank protein-free paper. The results show that plant proteins are favorable than synthetic adhesives; because they are biodegradable and do not cause troubles in paper recycling i.e. they are environmentally friendly.
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Affiliation(s)
- Yehia Fahmy
- Cellulose and Paper Department, National Research Center, Sh. El-Tahrir, Dokki, Cairo, Egypt.
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