Synthesis of chitosan/MCM-48 and β-cyclodextrin/MCM-48 composites as bio-adsorbents for environmental removal of Cd2+ ions; kinetic and equilibrium studies

Jiang, Yuansheng; Abukhadra, Mostafa R.; Refay, Nermen M.; Sharaf, Mohamed; El-Meligy, Mohammed A.; Awwad, Emad Mahrous

doi:10.1016/j.reactfunctpolym.2020.104675

Cited by 94 publications

(93 citation statements)

References 68 publications

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“…This was reported in the literature as a result of the expected increase in the IBF driving forces with increasing the concentration. This enhances the diffusion properties of the dissolved IBF ions towards the free active loading receptors of Fe 0 @CH/CS which in turn improves the actual IBF loading results [15,34]. The increase in the tested IBF concentration above 700 mg/L up to 900 mg/L is of slight impact on the measured IBF loading capacity of Fe 0 @CH/CS (Fig.…”

Section: Effect Of Ibf Concentrationmentioning

confidence: 89%

“…The natural polymer which can be extracted from the bio-resources as plants (starch, chitosan, and cellulose) and animal (collagen, albumin, and gelatin) were studied extensively as natural biopolymers of signi cant medical and health applications [14,15,16]. Such polymers are of excellent biocompatibility, chemical safety, availability, reactivity, and chemical a nities for the organic structures of the drug [12,17,18].…”

Section: Introductionmentioning

confidence: 99%

“…Chitosan is also is a well-known biopolymer that is an essential component for numerous environmental, medical, and pharmaceutical applications especially as a drug carrier [9,15,18]. Chitosan is polyaminosaccharide polymer that is of several technical advantages and can be produced easily from the chitin component in different biogenic sources [18].…”

Section: Introductionmentioning

confidence: 99%

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Synthesis And Characterization Of Fe0@Chitosan/Cellulose Green Nanocomposite As Advanced Carrier For Ibuprofen Drug; Loading And Release Properties

Abukhadra

Kashief

Khim

et al. 2022

Preprint

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Green nanocomposite of Fe0@chitosan/cellulose (Fe0@CH/CS) was synthesized utilizing the green extract of khaya senegalensis leaves and sugarcane bagasse as cellulose precursor. The composite was evaluated as an effective carrier for ibuprofen drug (IBF) considering its release and loading properties. The Fe0@CH/CS is of significant IBF loading capacity (553 mg/g) and the loading behavior can be directed by the values of the experimental variables. The loading of IBF into Fe0@CH/CS is in agreement with the classic Langmuir isotherm (R2> 0.95) and Pseudo-first order kinetic (R2> 0.97). This displays homogenous, physisorption, and a monolayer loading of IBF into Fe0@CH/CS. Based on the findings of the Monolayer model with one energy as advanced isotherm model, the Fe0@CH/CS structure is of 252.6 mg/g active receptors density and each rector was occupied by two or three IBF ions (n=2.18) by multi-molecular mechanism. The determined IBF loading energy (4.81 kJ/mol) demonstrates the physical loading of the drug by Van-der Waals forces and/or hydrogen bonding. The Fe0@CH/CS structure is of significant release profiles as carrier for IBF which continued up to 260 h (gastric buffer) and 180 h (intestinal buffer). The studied release kinetics and the obtained diffusion exponent (0.58 (pH 1.2) and 0.48 (pH 7.4)) reflect the release of IBF from Fe0@CH/CS by complex diffusion and erosion mechanisms. The cytotoxicity tests declared the safe and biocompatible value of both Fe0@CH/CS and IBF loaded Fe0@CH/CS on the human bronchial epithelial cells.

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Section: Effect Of Ibf Concentrationmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Synthesis And Characterization Of Fe0@Chitosan/Cellulose Green Nanocomposite As Advanced Carrier For Ibuprofen Drug; Loading And Release Properties

Abukhadra

Kashief

Khim

et al. 2022

Preprint

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“…The core-shell architecture could be achieved by direct deposition of different types of natural/synthetic polyelectrolytes (CS, PEI, humic acid, PAH, PVAm, PAA, PSS etc.) on 2D-cores, such as GO [21][22][23]25,115,116] and Ti 3 C 2 -MXenes [117], or 3D-cores, including Fe 3 O 4 [57,108,122,123,126,127], SiO 2 [24,28,83,90,100,101,103,109], SiO 2 /Fe 3 O 4 [88,128], PS [91], FeS [129], clays [99,111,112], CaCO 3 [102], mesoporous diatomite [89], natural fibers [107] and sand [123]. The direct deposition of the organic or organic/inorganic "shell" onto inorganic or organic "core" could be carried out in (i) one-step, by physisorption [21,89,108,111,112], grafting [23,83,88,100,115,117], ionic or solvent gelation/precipitation [25,27,…”

Section: Core-shell Compositesmentioning

confidence: 99%

“…A schematic overview of the principal types of composite membranes is shown in Figure 15. The composite membranes can be fabricated by deposition (coating, grafting, self-assembly) of organic/inorganic components onto an unmodified membrane [28,95,[143][144][145]. Using a covalent bonded polyelectrolyte onto a cellulose membrane, Pei and collaborators synthesized a sorptive composite membrane with high abilities for metal ions (Cu 2+ , Pb 2+ , Cd 2+ ) immobilization.…”

Section: Membranesmentioning

confidence: 99%

An Overview on Composite Sorbents Based on Polyelectrolytes Used in Advanced Wastewater Treatment

et al. 2021

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Advanced wastewater treatment processes are required to implement wastewater reuse in agriculture or industry, the efficient removal of targeted priority and emerging organic & inorganic pollutants being compulsory (due to their eco-toxicological and human health effects, bio-accumulative, and degradation characteristics). Various processes such as membrane separations, adsorption, advanced oxidation, filtration, disinfection may be used in combination with one or more conventional treatment stages, but technical and environmental criteria are important to assess their application. Natural and synthetic polyelectrolytes combined with some inorganic materials or other organic or inorganic polymers create new materials (composites) that are currently used in sorption of toxic pollutants. The recent developments on the synthesis and characterization of composites based on polyelectrolytes, divided according to their macroscopic shape—beads, core-shell, gels, nanofibers, membranes—are discussed, and a correlation of their actual structure and properties with the adsorption mechanisms and removal efficiencies of various pollutants in aqueous media (priority and emerging pollutants or other model pollutants) are presented.

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Preparation of nZVI/MCM‐41/rGO for Adsorption of Nickel Ions from Water

Piao,

Peng,

Liu

et al. 2024

ChemistrySelect

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Emissions of nickel (Ni) are harmful to the environment and people‘s health. Although nano zero‐valent iron (nZVI) has a lot of potential for treating water pollution, its instability and tendency for aggregation have limited its application. In order to improve its properties, composite adsorbent MCM‐41/rGO supported nZVI (nZVI/MCM‐41/rGO) is designed for improving the properties of nZVI, and it is characterized by SEM, XRD, FTIR and BET. The results show that it has an apparent Fe(0) crystallinity and modest rGO crystallinity, as well as a rough and porous structure. There are many oxygen‐containing groups found on the surface of nZVI/MCM‐41/rGO, such as −OH, −COOH, and Si−O. The pore diameter is concentrated at 23.82 nm, and the specific surface area is 15.94 cm2/g. The consequences of several parameters such as contact time, initial metal ion concentration, adsorbent dosage, and pH for adsorption efficiency were investigated. The best performance is occurred at pH 6, C0=80 mg/L with a 2 g/L adsorbent dosage, and after 180 min, a maximum adsorption capacity of 41.82 mg/g is reached at 333 K. The Dubinin‐Radushkevich isotherm and second order kinetic models fit the Ni(II) adsorption process well. It is determined through analysis of the thermodynamic parameters that the adsorption progress is endothermic (ΔH0>0) and spontaneous (ΔG0<0). nZVI/MCM‐41/rGO has proven to be an effective and alternative material for the removal of Ni(II) ions from aqueous media due to its excellent removal ability, availability, and low cost.

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Synthesis of chitosan/MCM-48 and β-cyclodextrin/MCM-48 composites as bio-adsorbents for environmental removal of Cd2+ ions; kinetic and equilibrium studies

Cited by 94 publications

References 68 publications

Synthesis And Characterization Of Fe0@Chitosan/Cellulose Green Nanocomposite As Advanced Carrier For Ibuprofen Drug; Loading And Release Properties

Synthesis And Characterization Of Fe0@Chitosan/Cellulose Green Nanocomposite As Advanced Carrier For Ibuprofen Drug; Loading And Release Properties

An Overview on Composite Sorbents Based on Polyelectrolytes Used in Advanced Wastewater Treatment

Preparation of nZVI/MCM‐41/rGO for Adsorption of Nickel Ions from Water

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