Title of article :
Ultrasound assisted preparation of nanoclay Bentonite-FeCo nanocomposite hybrid hydrogel: A potential responsive sorbent for removal of organic pollutant from water Original Research Article
Author/Authors :
S.R. Shirsath، نويسنده , , A.P. Hage، نويسنده , , M. Zhou، نويسنده , , S.H. Sonawane، نويسنده , , M. Ashokkumar، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2011
Abstract :
Synthesis of poly(acrylic acid)-bentonite-FeCo (PAA-B-FeCo) hydrogel nanocomposite via ultrasound assisted in situ emulsion polymerization was carried out. Addition of exfoliated bentonite clay platelets and Fe–Co increased the strength and stability of hydrogel and assisted the adsorption of an organic pollutant. The response of the nanocomposite hydrogel was evaluated using a cationic dye, crystal violet (CV) under different temperature, pH, and cavitation environment. The optimum temperature was found to be 35 °C and basic pH (optimum at 11) was responsible for the higher adsorption of dye due to dissociation of COO− ions at higher pH. Bimetallic components form the metal ions in hydrogel which shows repulsion at low pH resulting to lower response. Thermodynamic parameters for adsorption indicated that the dye adsorption onto PAA-B-FeCo hydrogel was spontaneous and endothermic in nature.
Keywords :
Crystal violet dye , Swelling behavior , Emulsion polymerization , Hydrogel nanocomposite , Adsorption isotherm
Journal title :
Desalination
Journal title :
Desalination