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1240528 
Journal Article 
Adsorption studies of arsenic on nano aluminium doped manganese copper ferrite polymer (MA, VA, AA) composite: Kinetics and mechanism 
Malana, MA; Qureshi, RB; Ashiq, MN 
2011 
Yes 
Chemical Engineering Journal
ISSN: 1385-8947 
Elsevier B.V., The Boulevard Kidlington Oxford OX5 1GB United Kingdom 
172 
2-3 (Aug 15 
721-727 
WOS:000295387100015 
Aluminium doped nano manganese copper ferrite (average size of 13 nm) was synthesized by the chemical co-precipitation method and nanocomposite was prepared by doping this ferrite in methacrylate, vinyl acetate and acrylic acid polymer through slow heating process. This nanocomposite was used as an adsorbent for the removal of arsenic from aqueous solution. The equilibrium data was fitted to Freundlich, Langmuir, Dubinin Rudushkevish and Flory Huggins models. The maximum adsorption capacity (q sub(m)) of arsenic on the nanocomposite was found to be 0.053 mg g super(-1) which is higher than that of many other adsorbents reported in literature. Mean sorption energy obtained from DR isotherm was 40.98 kJ mol super(-1) indicating chemical nature of the adsorbate-adsorbent interactions. The pseudo-second order kinetic model gave a better fit to the experimental data indicating involvement of both the external as well as internal mass transfer. Bangham's model and intraparticle diffusion model were applied to investigate mechanism of the adsorption process. Non linear Bangham plot and significant value of intercept obtained from intraparticle diffusion model showed the film diffusion as well as pore diffusion to be the rate limiting steps. 
Diffusion; Copper; Aluminum; Polymers; Kinetics; Manganese; Adsorption; composite materials; Arsenic; 2011)