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Show simple item record Mittal, Hemant Ray, Suprakas S 2017-07-28T09:38:10Z 2017-07-28T09:38:10Z 2016-07
dc.identifier.citation Mittal, H. and Ray, S.S. 2016. A study on the adsorption of methylene blue onto gum ghatti/TiO2nanoparticles-based hydrogel nanocomposite. International Journal of Biological Macromolecules, vol. 88: 66-80. en_US
dc.identifier.issn 0141-8130
dc.description Copyright: 2016 Elsevier. Due to copyright restrictions, the attached PDF file only contains the abstract of the full text item. For access to the full text item, kindly consult the publisher's website. en_US
dc.description.abstract The objective of this work was to study the isotherm and kinetic models for the adsorption of methylene blue (MB) onto a TiO(sub2) nanoparticle (TiO(sub2)NP)-containing hydrogel nanocomposite (HNC) of polyacrylamide-grafted gum ghatti (PAAm-g-Gg). The grafting of PAAm onto Gg was conducted using N,N’-methylene-bis-acrylamide (MBA) as a crosslinker, and different weight percentages of TiO(sub2)NPs were incorporated into the hydrogel matrix during the grafting reaction. The graft co-polymerization and the formation of the HNC were confirmed using FTIR, XRD, BET, SEM, TEM and EDS analyses. The adsorption of MB was studied in batch mode and it was found to be highly dependent on solution pH, ionic strength temperature and adsorbent loading. The MB-adsorption process followed the pseudo-second-order rate model and Langmuir adsorption isotherm with a maximum adsorption capacity of 1305.5 mg g(sup-1). Thermodynamic studies revealed that the adsorption of MB onto the HNC surface was spontaneous, endothermic and through a process of physisorption. The results also showed that the HNC was much more effective for the adsorption of cationic dyes than anionic dyes, and it retained its original adsorption capacity for five successive cycles of adsorption-desorption. In conclusion, the hydrogel nanocomposite showed huge potential for remediating industrial wastewater polluted by toxic cationic dyes. en_US
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.relation.ispartofseries Worklist;18411
dc.subject Polyacrylamide-grafted gum ghatti en_US
dc.subject Hydrogel nanocomposite en_US
dc.subject Methylene blue en_US
dc.subject Adsorption kinetics and isotherms en_US
dc.title A study on the adsorption of methylene blue onto gum ghatti/TiO2nanoparticles-based hydrogel nanocomposite en_US
dc.type Article en_US

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