▎ 摘　　要

NOVELTY - pH-Independent two-component composition for removing a dye from an aqueous system via π -π interactions, comprises: modified aluminum hydroxide sludge (mAHS); and a partially reduced graphene oxide. USE - The composition is used for removing a dye, preferably RhB from an aqueous system via π -π interactions (claimed). ADVANTAGE - The composition is effective in the removal of RhB at a wide pH range of 2-14 and can be used multiple times till saturation is achieved. The composition allows for effective and efficient removal of dyes from wastewater in a cost-effective and straightforward manner. The composition is advantageous for both waste disposal and wastewater treatment. The composition (GO-mAHS composite) can be prepared in a simple, cost-effective, and energy-efficient manner, without generating any toxic byproducts, making it suitable for large-scale production, thus the GO-mAHS is a cost-effective and eco-friendly adsorbent for color removal. The composition achieves effective adsorption even at low concentrations due to the large surface area of GO, with significantly less contact time for adsorption, where RhB adsorption onto GO-mAHS is pH-independent, eliminating the need to neutralize wastewater before treatment, no leaching of the RhB from the GO-mAHS composite was observed under both acidic and basic pH values, suggesting high stability, and also, RhB adsorbed GO-mAHS can be used in other applications, such as producing building materials that could generate a secondary income. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: a method (A) of preparing the composition, comprising dehydrating AHS to a temperature of 180-220° C to obtain a dried solid, reducing particle size of the dried solid to obtain the mAHS, mixing the mAHS with a graphene oxide (GO) solution to obtain a paste, and heating the paste to obtain the product; and a method (B) of removing a dye from an aqueous system, comprising contacting the composition with the aqueous system for a period sufficient to obtain a dye adsorbed composition and separating the dye adsorbed composition from the aqueous system.