Microwave-assisted synthesis of tetraethylenepentamine functionalized activated carbon with high adsorption capacity for Malachite green dye.

Tetraethylenepentamine-functionalized Rosa canina -L fruits activated carbon (TEPFRCA) was synthesized by microwave-assisted method for the fast adsorption and rapid removal of Malachite green (MG) from the solvent phase. The morphological and anatomical characterization of developed adsorbent was carried out using various analytical techniques such as FT-IR and FE-SEM. The impact of various influential parameters such as contact time (1–60 min), initial metal ion concentration (25–65 mg/L), temperature (298–333 K), adsorbent dose (0.001–0.025 g) and initial pH (1–8) of the solution was carried out using a batch adsorption method. The adsorption kinetic and equilibrium data process follows pseudo-second-order reaction kinetics (R 2 > 0.99) and the maximum adsorption capacity for TEPFRCA was 333.3 mg/g at 298 K. The whole process of adsorption of MG dye on to the developed adsorbent i.e. TEPFRCA was found to be spontaneous and endothermic under standard conditions. [ABSTRACT FROM AUTHOR]