Environmental catalysis and materials

Dyes adsorption using a synthetic carboxymethyl cellulose-acrylic acid adsorbent

Genlin Zhang , Lijuan Yi , Hui Deng , Ping Sun


Received June 24, 2013,Revised September 26, 2013, Accepted , Available online April 01, 2014

Volume 26,2014,Pages 1203-1211

Removal of noxious dyes is gaining public and technological attention. Herein grafting polymerization was employed to produce a novel adsorbent using acrylic acid and carboxymethyl cellulose for dye removal. Scanning electron microscopy and Fourier-transform infrared spectroscopy verified the adsorbent formed under optimized reaction conditions. The removal ratio of adsorbent to Methyl Orange, Disperse Blue 2BLN and malachite green chloride reached to 84.2%, 79.6% and 99.9%, respectively. The greater agreement between the calculated and experimental results suggested that pseudo second-order kinetic model better represents the kinetic adsorption data. Equilibrium adsorptions of dyes were better explained by the Temkin isotherm. The results implied that this new cellulose-based absorbent had the universality for removal of dyes through the chemical adsorption mechanism.

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