Development of an amino functionalized glycidylmethacrylate-grafted-titanium dioxide densified cellulose for the adsorptive removal of arsenic(V) from aqueous solutions

• Published in: Chemical engineering journal (Lausanne, Switzerland : 1996) Switzerland : 1996), 2012-10, Vol.209, p.362-371
• Main Authors: Anirudhan, T.S., Nima, J., Sandeep, S., Ratheesh, V.R.N.
• Format: Article
• Language: English
• Subjects: adsorbents; Adsorption; Adsorption kinetics; Applied sciences; aqueous solutions; arsenic; Arsenic(V); Cellulose; Chemical engineering; Copolymerization; Desorption; Exact sciences and technology; Graft copolymerization; ions; Isotherm; Organic polymers; Physicochemistry of polymers; Preparation, kinetics, thermodynamics, mechanism and catalysts; sorption isotherms; titanium dioxide
• ISSN: 1385-8947; 1873-3212
• DOI: 10.1016/j.cej.2012.07.129

A novel adsorbent, amino functionalized glycidylmethacrylate-grafted-titanium dioxide densified cellulose for the adsorptive removal of arsenic(V) from aqueous solutions. [Display omitted] ► A novel adsorbent, Et-AMPGDC was synthesized by graft copolymerization technique. ► Et-AMPGDC was characterized using TG, XRD, SEM and FTIR techniques. ► Adsorption characteristics of asenic(V) [As(V)] onto Et-AMPGDC were investigated. ► Et-AMPGDC can be used in the removal of As(V) from aqueous solutions. ► Regeneration of spent adsorbent was possible with 0.1M HCl. In this study, the development and characterization of a novel adsorbent, prepared by ethylation of glycidylmethacrylate grafted aminated titanium dioxide densified cellulose (Et-AMPGDC), for the removal of arsenic(V) [As(V)] from aqueous solutions are reported. The adsorbent was characterized using FTIR, XRD, SEM and TG-DTG measurements. Batch experiments were performed to evaluate the adsorption efficiency of Et-AMPGDC towards As(V) ions. The optimum pH was found to be 6.0. Kinetic studies reveal that the uptake was rapid and equilibrium was established in 1h. The pseudo-second-order rate model fitted the adsorption kinetics perfectly. Langmuir isotherm model adequately described the homogeneous nature of the surface of adsorbent. The maximum adsorption capacity was evaluated to be 108.70mg/g. Adsorbed As(V) ions were desorbed effectively by 0.1M HCl. The present investigation shows that Et-AMPGDC would be a promising adsorbent for the removal of As(V) from aqueous solutions.