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- W3147149898 abstract "Three novel polyelectrolyte galactomannan hydrogels (PGHs) were fabricated by chemically crosslinking quaternary ammonium galactomannan (QAG) and carboxymethyl galactomannan (CMG), and employed for the removal of Congo Red (CR) and Methylene Blue (MB). Physicochemical characterization revealed that the PGHs are chemically and physically crosslinked. The PGHs are pH- and ion-sensitive, and their physical crosslinking can be destroyed by artificial urine; water swelling capacity (100.6–321.9 g/g dry gel) and artificial urine swelling capacity (35.9–80.5 g/g dry gel). The adsorption of CR and MB was studied and found to be pH-dependent and selective. The maximum adsorption capacities of CR and MB on the QAG and CMG gels are 1441 and 94.52 mg/g, respectively, and their adsorption kinetics and isotherm behavior obey the pseudo-second-order kinetics model and Langmuir isotherm model, respectively. The adsorption mechanism is dominated by electrostatic interactions and hydrogen bonding. Further, the PGHs have excellent salt resistance and are reusable." @default.
- W3147149898 created "2021-04-13" @default.
- W3147149898 creator A5040908309 @default.
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- W3147149898 creator A5068080767 @default.
- W3147149898 date "2021-07-01" @default.
- W3147149898 modified "2023-10-17" @default.
- W3147149898 title "Synthesis, characterization, and selective dye adsorption by pH- and ion-sensitive polyelectrolyte galactomannan-based hydrogels" @default.
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- W3147149898 doi "https://doi.org/10.1016/j.carbpol.2021.118009" @default.
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- W3147149898 hasPublicationYear "2021" @default.
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