Removal of Reactive Red 198 dye from aqueous media using Boehmite/Fe₃O₄/GO magnetic nanoparticles as a novel & effective adsorbent

ABSTRACT

This study aims to investigate the Reactive Red 198 (RR198) dye removal from an aqueous media by Boehmite/Fe₃O₄/Graphene Oxide (GO) magnetic nano-adsorbent. To this end, the structures of the synthesised materials were fully studied using SEM, FTIR, BET, XRD, TGA analyzes. Then, the effect of assorted variables like contact time, adsorbent dosage, pH, and temperature on the elimination of RR198 by the nano-adsorbent was investigated. According to the results, the highest removal efficiency was 98.9% at pH: 3, adsorbent dosage 2 g/l, contact time, 20 min, and temperature 40°C in the initial dye concentration of 100 mg/l. Furthermore, studying the adsorption process equilibrium and kinetic behaviours indicated that the adsorption process pursues the Langmuir adsorption isotherm and the PSO kinetic model, with the maximum RR198 dye sorption capacity being 107.5 mg/g using the Langmuir equation.

KEYWORDS:

• Magnetic adsorbent
• reactive red 198
• synthetic studies
• equilibrium

Disclosure statement

The authors declare that they have no known competing financial interests or personal relationships that could have influenced the work reported in this paper.