The removal of persistent and toxic dyes from wastewater is a significant environmental challenge. The present study gives valuable insights into the preparation of a novel composite adsorbent from reduced graphene oxide (rGO) and bentonite, encapsulated in sodium alginate beads (SA/RGO/BENT), for the adsorption of MB. GO was effectively reduced by using choline hydroxide (Ch-OH) as a green solvent and catalyst, which helps to produce negatively charged surface of adsorbent and leads to the selective adsorption of cationic dyes. The adsorption experiments were conducted to evaluate the effects of pH, adsorbent dosage, contact time, and initial dye concentration on the adsorption capacity. Experimental results demonstrated that SA/RGO/BENT beads exhibit remarkable adsorption capacity, achieving upwards of 97.92 % removal efficiencies. The adsorption process follows pseudo-second order kinetics and Langmuir adsorption isotherm. Furthermore, the study explores the feasibility of scaling up the adsorption process and discusses potential applications in wastewater treatment. Overall, this research contributes valuable insights into sustainable methods for mitigating methylene blue pollution in wastewater, emphasizing the potential of adsorption technology in environmental remediation efforts.

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