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Sharma, Shweta; Sharma, Gaurav; Kumar, Amit; AlGarni, Tahani Saad; Naushad, Mu; ALOthman, Zeid A.; Stadler, Florian J.
Journal of hazardous materials, 01/2022, Letnik: 421Journal Article
Polysaccharide-based hydrogels offer a great overlook for environmental applications and help in the elimination of various noxious pollutants from the water system. Novel carrageenan and itaconic acid-based superadsorbent hydrogel having appreciable swelling properties and adsorption capacity towards Methylene blue (MB), Crystal violet (CV), and Methyl Red (MR) was synthesized by suspension polymerization technique. The swelling study showed the dependency upon the temperature in which the swelling rate increased with increasing temperature with a maximum swelling rate of 417% at 318 K. For ascertaining the maximum adsorption capacity, various influential parameters such as contact time, adsorbent dose, dye concentration, and temperature were systematically studied. Maximum adsorption capacity as calculated from the Langmuir isotherm was 2439.02, 1111.11, and 666.68 mg/g for MB, CV, and MR, respectively. Thermodynamic studies revealed the spontaneous nature of the undertaken dye adsorption experiment. Overall, the present study reveals that the synthesized superadsorbent hydrogel can be used as an efficient adsorbent for the removal of dyes from an aqueous solution. Display omitted •Superadsorbent hydrogel designed for the adsorptive removal of cationic dyes.•Maximum adsorption capacity obtained for MB followed by CV and MR.•Results have been analyzed by isotherm and kinetic studies.•Superadsorbent hydrogel successfully recycled for consecutive 5 cycles.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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