This study successfully synthesized a new adsorbent by ethylation of glycidylmethacrylate grafted
aminated titanium dioxide densified cellulose (Et-AMPGDC), to remove chromium(VI) from aqueous
solutions. The adsorbent was characterized by the FTIR, XRD, SEM and TG-DTG measurements. Batch
adsorption technique using Et-AMPGDC was applied for the removal of Cr(VI) from aqueous solution
and waste water. The contact time necessary to attain equilibrium and the optimum pH were found to
be 1 h and 4.5, respectively. The kinetics of sorption of Cr(VI) ions was described by a pseudo-secondorder
kinetic model. The equilibrium isotherm data were analyzed using the Langmuir and Freundlich
isotherm equations and the adsorption process was reflected by Langmuir isotherm. The maximum
adsorption capacity was evaluated to be 123.60 mg/g. The electroplating industrial wastewater samples
were treated with Et-AMPGDC to demonstrate its efficiency in removing Cr(VI) from wastewater.
Almost complete removal was possible with 100 mg of the adsorbent from 50 mL of wastewater sample.
Desorption efficiency was achieved by treatment with 0.1 M NaOH and five adsorption–desorption cycles
were performed without significant decrease in adsorption capacity