Novel pseudopolyrotaxane composite based on biopolymers: Synthesis, characterization and application in water treatment

Three biopolymer composites (1), (2) and (3) based on chitosan and carboxymethyl cellulose were synthesized, characterized and applied as nontoxic cationic color precipitant and flocculating agents for mixed cane juice (MCJ) and raw syrup refining process. The chemical structure of the obtained composites was elucidated by different techniques, FT-IR, XRD and SEM. They were investigated as a decolorizing agent of colorant matters of MCJ and raw syrup. The composite (1) was chosen and tested for further procedures due to its stability and economically purposes. Composite (1) showed a color removal efficiency of MCJ and raw syrup by 15.8 and 40.7%, respectively, at 200 ppm dosages, compared to the traditional clarification method. All the analyses of MCJ and raw syrup were conducted in the pilot plant to compare between the obtained clarification efficiency in presence of bioclarifying agent and that with the currently used phosphatation process. Also, the obtained results showed that the composite (1) can act as flocculating agent where 50% reduction is in the dosage of anionic flocculant. Moreover, the total cost of chemical aids and maintenance will be decreased by about 2.4 million LE in case of incorporating composite (1) in the clarification process of sugar cane juice.

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Synthesis and Characterization of Promising Economic Biopolymer Composite as a Clarifying Agent for Sugar Industry

Mahgoub

Gad

El‐Naggar

et al. 2023

Sugar Tech

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Novel chitosan-acetyl isatin polymer derivatives: synthesis, characterization, and applications in bone tissue engineering

Dardeer

Taha

Abou-Zeid

et al. 2022

Biomass Conv. Bioref.

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Novel crystalline and thermally stable chitosan-N-acetylisatin (Chs-NAI) polymer derivatives were synthesized by chitosan modification. These polymers were formed by insertion of β-cyclodextrin (βCD) and doping with zinc oxide nanoparticles (ZnO NPs) yielding pseudopolyrotaxane (Chs-NAI/βCD), Chs-NAI/ZnO-NPs, and Chs-NAI/βCD/ZnO NP composites. The chemical structure and morphology of the newly prepared polymers were investigated by FTIR, XRD, and SEM analyses. Also, the optical properties and thermal stability analysis of the synthesized polymers were examined. These results showed that the use of β-CD or ZnO NPs to modify the polymer (Chs-NAI) dramatically improves the thermal stability and optical properties of the synthesized polymer. The weight losses of the synthesized polymers are 66%, 56%, 48%, and 59% in Chs-NAI, Chs-NAI/βCD, Chs-NAI/ZnO, and Chs-NAI/βCD/ZnO, respectively. For mineral deposition, Chs-NAI/βCD/ZnO was presoaked with a PO43− containing solution before being immersed in a Ca2+ containing solution. The properties of Chs-NAI/βCD/ZnO nanoparticles/calcium phosphate materials were examined to confirm the deposition of the calcium phosphate on the Chs-NAI/βCD/ZnO nanoparticles surface using different techniques. Based on the results of the tests on the Vero cell lines, Chs-NAI/βCD/ZnO NPs)/calcium phosphate demonstrated very mild cytotoxicity. In addition, the feasibility of a wide variety of hybrid was assessed with an MTT test, and it was determined that they were noncytotoxic under a variety of hybrid concentrations.

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Activated Charcoal/Alginate Nanocomposite Beads for Efficient Adsorption of the Cationic Dye Methylene Blue: Kinetics and Equilibrium

2022

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Novel pseudopolyrotaxane composite based on biopolymers: Synthesis, characterization and application in water treatment

Cited by 4 publications

References 52 publications

Synthesis and Characterization of Promising Economic Biopolymer Composite as a Clarifying Agent for Sugar Industry

Synthesis and Characterization of Promising Economic Biopolymer Composite as a Clarifying Agent for Sugar Industry

Novel chitosan-acetyl isatin polymer derivatives: synthesis, characterization, and applications in bone tissue engineering

Activated Charcoal/Alginate Nanocomposite Beads for Efficient Adsorption of the Cationic Dye Methylene Blue: Kinetics and Equilibrium

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