The magnetic iron oxide modified activated carbon derived from Terminalia Arjuna Bark for efficient removal of congo red dye from aqueous solution

Water pollution is a vital concern in today’s world. Among various pollutants dyes are more responsible water contamination. Nanoparticles were extensively used to treat the organic pollutants like dyes in the water bodies. This paper presented about the preparation of activated carbon derived from Terminalia arjuna bark modified with magnetic iron oxide nanoparticles (Fe3O4@AC). The novel adsorbent was used to remove congo red (CR) dye from aqueous solution. The adsorption of CR using Fe3O4@AC was design with an appropriate adsorption mechanism. Various parameters were optimized like initial dye concentration, pH, adsorption dosage, and contact time were optimized in this paper. Langmuir isotherm model and Pseudo-second order kinetic model well fitted to the CR dye adsorption on Fe3O4@AC materials due to high correlation coefficient (R2 =0.99) value. The maximum adsorption capacity (qmax) for CR dye was found to be 50.05 mg/g. The results from our investigation revealed that the synthesized Fe3O4@AC act as an efficient adsorbent for the elimination of CR dye from water body.