Radiation grafting of ionically crosslinked alginate/chitosan beads with acrylic acid for lead sorption

Fadl, Faten Ismail Abou El

doi:10.1007/s10967-014-3149-3

Cited by 28 publications

(11 citation statements)

References 25 publications

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“…For instance, lead (Pb) is widely utilized as industrial raw material in the manufacture of petrol, paints, ceramics, food cans, storage batteries and cosmetics. However, excessive uptake of Pbs tend to cause neurological disturbances, including headache, irritability, lethargy, convulsions, muscle weakness, ataxia, tremors and paralysis (Abou El Fadl, 2014). According to the World Health Organization (WHO), the maximum allowed concentration of Pb content in drinking water is 0.05 mg L -1 .…”

Section: Introductionmentioning

confidence: 99%

Preparation of methacrylamide-functionalized crosslinked chitosan by free radical polymerization for the removal of lead ions

Sutirman

Sanagi

Karim

et al. 2016

Carbohydrate Polymers

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Section: Introductionmentioning

confidence: 99%

Preparation of methacrylamide-functionalized crosslinked chitosan by free radical polymerization for the removal of lead ions

Sutirman

Sanagi

Karim

et al. 2016

Carbohydrate Polymers

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“…The preparation of sodium alginate beads by ionic crosslinking was followed as reported in literature with some modifications [14]. Sodium alginate (SA) stock solution was prepared by dissolving five grams of alginate powder in beaker and stirring with magnetic stirrer over night to give homogeneous viscous solution (5% wt/ v).…”

Section: Preparation Of Calcium Alginate (Ca-alg) Beadsmentioning

confidence: 99%

Radiation Induced Silver Nanoparticles in Ionically Crosslinked Alginate Beads for Efficient Catalytic Degradation of Basic Dye

Taleb

Fadl

Albalwi

et al. 2021

Preprint

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Silver nanoparticles (Ag NPs) are widely used as engineered nanomaterials in many advanced nanotechnologies, due to their versatile, easy and cheap preparations combined with peculiar chemical-physical properties. Their increased production and integration in environmental applications including water treatment raise concerns for their impact on humans and the environment. In this study, gamma radiation dose of 20 kGy was utilized to induce the synthesis silver nanoparticles (Ag NPs) in the alginate micro beads to prepare calcium Alginate/Ag (Ca-ALG/Ag) nanocomposite beads. These beads were then used to degrade toxic basic dyes in waste water. Initially, Ca-ALG /Ag nanocomposite beads were synthesized and characterized using Ultra Violet-visible spectrum (UV-Vis), Scanning Electron Microscope (SEM), X-Ray Diffraction (XRD) and Transmission Electron Microscope (TEM) for confirming the formation of Ag NPs and morphological study. The catalytic efficiency of the resulting Ca-ALG/Ag nanocomposite beads is evaluated for the degradation of dyes such sandocryl blue dye in the presence of NaBH4. The catalytic degradation of sandocryl blue dye was very fast in the present conditions: 0.1 g of catalyst 5 ml NaBH4 and the optimum time for complete reduction was 30 min. The pseudo-first order, pseudo second order and intra particle diffusion model used to evaluate the kinetic models and the mechanism of the degradation. Results showed that the degradation kinetics best fit the pseudo-second-order model and Langmuir isotherm model. The Biopolymer-based nanocomposite beads of calcium alginate, and Ag NPs can be applied to reduce dyestuff, where it is economically viable and environmentally friendly.

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“…Ionic crosslinking of a single type of polysaccharide include examples such as CMC with Al 3+ , and gellan gum, alginate and pectin with Ca 2+ . Radiation crosslinking has been achieved by using an electron beam or gamma radiation for CMC, starch, chitosan and alginate . Use of any of these crosslinking methods for a single type of polysaccharide will result in the production of a crosslinked polymer with improved physical and chemical properties such as solubility, crosslinking density, swelling behavior, mechanical strength, thermal stability and sensitivity to the environment such as changes in pH and temperature that widen their applicability .…”

Section: Crosslinking In Single Polysaccharidesmentioning

confidence: 99%

Biodegradable Polysaccharides for Controlled Drug Delivery

et al. 2016

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Polysaccharides are ideal candidates for drug delivery and biomedical applications as they are easily obtained from natural sources. Furthermore, they can be subjected to a wide range of chemical and enzymatic reactions, they have biocompatible and biodegradable properties and have inherently low immunogenicity. Polysaccharides are potentially the materials of choice for the development of “smart” delivery systems, which are capable of releasing, at the appropriate time and site of action, an encapsulated drug. This Review examines various aspects of the crosslinking of polysaccharides, either for a single polysaccharide or mixtures, and also natural–synthetic hybrids. The Review focuses on the strategies for using these biodegradable polymers for controlled drug delivery, and examines in particular polysaccharide–drug conjugates, the encapsulation of drugs in hydrogels and aerogels, and the self‐assembly of polysaccharide drug‐loaded nanoparticles.

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Radiation grafting of ionically crosslinked alginate/chitosan beads with acrylic acid for lead sorption

Cited by 28 publications

References 25 publications

Preparation of methacrylamide-functionalized crosslinked chitosan by free radical polymerization for the removal of lead ions

Preparation of methacrylamide-functionalized crosslinked chitosan by free radical polymerization for the removal of lead ions

Radiation Induced Silver Nanoparticles in Ionically Crosslinked Alginate Beads for Efficient Catalytic Degradation of Basic Dye

Biodegradable Polysaccharides for Controlled Drug Delivery

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