Effective removal of cationic dyes from aqueous solution using gum ghatti-based biodegradable hydrogel

Hemant Mittal, Arjun Maity, Suprakas Sinha Ray

    Research output: Contribution to journalArticlepeer-review

    96 Scopus citations

    Abstract

    Biodegradable hydrogels of gum ghatti (Gg) with a co-polymer mixture of acrylamide (AAm) and methacrylic acid (MAA) (termed as Gg-cl-P(AAm- co-MAA)) were synthesised by microwave-assisted free radical graft co-polymerisation technique. The hydrogel polymer was characterized by FTIR, SEM, and Brunauer-Emmett-Teller techniques. The Gg-cl-P(AAm- co-MAA) hydrogel was studied as an adsorbent for the removal of methylene blue (MB) and methyl violet (MV) from aqueous solutions. Adsorption of both the dyes followed pseudo-second-order kinetics and Langmuir adsorption isotherm models. The hydrogel polymer adsorbed 98% of MB and 95% of MV from aqueous solution. The Gg-cl-P(AAm- co-MAA) maintained its original sorption capacity for three cycles of adsorption-desorption. Furthermore, the hydrogel polymer degraded fully within 50 days in soil compost. In summary, the Gg-cl-P(AAm- co-MAA) hydrogel could be a potential adsorbent for the remediation of dyes from industrial wastewater.

    Original languageBritish English
    Pages (from-to)8-20
    Number of pages13
    JournalInternational Journal of Biological Macromolecules
    Volume79
    DOIs
    StatePublished - 1 Aug 2015

    Keywords

    • Adsorption
    • Biodegradation
    • Gum ghatti
    • Isotherms
    • Kinetics
    • Methyl violet
    • Methylene blue

    Fingerprint

    Dive into the research topics of 'Effective removal of cationic dyes from aqueous solution using gum ghatti-based biodegradable hydrogel'. Together they form a unique fingerprint.

    Cite this