Open AccessAdsorptive Removal of Anionic Azo Dye Acid Black 194 from Aqueous Solution using NNMBA-Crosslinked Poly N-Vinyl Pyrrolidone Hydrogel
Author(s) -
Rino Laly Jose,
M. G. Gigimol,
Beena Mathew
Publication year - 2019
Publication title -
asian journal of chemistry/asian journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.145
H-Index - 34
eISSN - 0975-427X
pISSN - 0970-7077
DOI - 10.14233/ajchem.2020.22338
Subject(s) - chemistry , 2 pyrrolidone , adsorption , freundlich equation , aqueous solution , langmuir , acid dye , polymer chemistry , methylene blue , acrylamide , self healing hydrogels , nuclear chemistry , langmuir adsorption model , chemical engineering , copolymer , organic chemistry , polymer , dyeing , catalysis , photocatalysis , engineering
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-vinylpyrrolidone hydrogel displayed excellent properties for the removal of the azo dye, acid black 194 from aqueous solution.