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Vol. 32 No. 2 (2020): Vol 32 Issue 2

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Adsorptive Removal of Anionic Azo Dye Acid Black 194 from Aqueous Solution using NNMBA-Crosslinked Poly N-Vinyl Pyrrolidone Hydrogel

https://doi.org/10.14233/ajchem.2020.22338%20
Rino Laly Jose
School of Chemical Sciences, Mahatma Gandhi University, Kottayam-686560, Kerala, India; Department of Basic Sciences, Amal Jyothi College of Engineering, Kanjirappally, Kottayam-686518, India
M.G. Gigimol
Department of Chemistry, Alphonsa College, Pala, Kottayam-686575, India
Beena Mathew
School of Chemical Sciences, Mahatma Gandhi University, Kottayam-686560, Kerala, India

Corresponding Author(s) : Beena Mathew

beenamathew@mgu.ac.in

Asian Journal of Chemistry, Vol. 32 No. 2 (2020): Vol 32 Issue 2

Abstract

N,N-Methylene bis-acrylamide crosslinked poly-N-vinyl pyrrolidone hydrogels were synthesized and binding of the hydrogel with the dye solution was followed spectrophotometrically. The chemical structure and morphology of the hydrogel before and after adsorption of acid black 194 was confirmed by FT-IR and SEM. Effect of various physico-chemical parameters such as concentration, temperature, pH, time and the amount of hydrogel used were investigated by batch adsorption studies. Hydrogel used as adsorbent in this study was characterized by UV-Vis spectrophotometer before and after adsorption of acid black 194. Kinetic studies suggested pseudo second order reaction. Langmuir and Freundlich isotherms were applied on equilibrium adsorption data and found that Freundlich isotherm fit better for the present investigation. N,N-methylene bisacrylamide crosslinked poly-N-vinyl pyrrolidone hydrogel displayed excellent properties for the removal of the azo dye, acid black 194 from aqueous solution.

Keywords

Hydrogel Crosslinking agent Azo dye Adsorption
Jose, R. L., Gigimol, M., & Mathew, B. (2019). Adsorptive Removal of Anionic Azo Dye Acid Black 194 from Aqueous Solution using NNMBA-Crosslinked Poly N-Vinyl Pyrrolidone Hydrogel. Asian Journal of Chemistry, 32(2), 311–316. https://doi.org/10.14233/ajchem.2020.22338
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