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• W2891550174 endingPage "1007" @default.
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• W2891550174 abstract "In the present study, a novel hydrogel based on the polysaccharide, 'Karaya gum' has been synthesised by graft copolymerization and evaluated as an adsorbent for the removal of ionic dyes from aqueous solution. The hydrogel was made by simultaneous grafting and cross linking of Karaya gum using 2-(dimethylamino)ethyl methacrylate (DMAEMA) and N,N'-methylene-bis-acrylamide via microwave irradiation. The graft copolymer gel was characterized by FTIR, TGA, SEM techniques. The swelling of the gel studied in buffer media of varying pH revealed a pH responsive behaviour with a maximum swelling in neutral pH and a minimum swelling at pH 1.2. The temperature dependent swelling study indicated 40 °C as the lowest critical solution temperature. Kinetic studies indicated the swelling to be a second order process with Fickian diffusion as the water transport mechanism. The adsorption studies indicated maximum adsorption capacity of 89.28 and 101.42 mg/g towards methylene blue and indigo carmine respectively. The dye adsorption data is found to fit well with pseudo- second order kinetic model and the Freundlich adsorption isotherm model. The adsorption was found to be a multistep process with surface adsorption followed by intraparticle diffusion. Thermodynamic studies revealed the adsorption of dyes to be spontaneous." @default.
• W2891550174 created "2018-09-27" @default.
• W2891550174 creator A5042376612 @default.
• W2891550174 creator A5051066591 @default.
• W2891550174 date "2019-02-01" @default.
• W2891550174 modified "2023-10-18" @default.
• W2891550174 title "Karaya gum-graft-poly(2-(dimethylamino)ethyl methacrylate) gel: An efficient adsorbent for removal of ionic dyes from water" @default.
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• W2891550174 doi "https://doi.org/10.1016/j.ijbiomac.2018.09.038" @default.
• W2891550174 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30201563" @default.
• W2891550174 hasPublicationYear "2019" @default.
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