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An adsorbent is a solid substance that attracts and holds on its surface molecules of gases or solutions with which it is in contact. It is used to adsorb gases or dissolved substances, and the process is known as adsorption. Adsorbents are characterized by their large surface area, pore structure, and high degree of surface reactivity, which make them suitable for applications such as cleaning, dechlorinating, deodorizing, and decolorizing both liquid and vapour applications. The efficiency of an adsorbent in removing contaminants is influenced by its concentration and porosity. AHNP was prepared by electro dissolution of aluminum electrodes in distilled water at the current density of 195 A/m2 . The electrolysis process continued for 2 h, after which electrolysis was stopped, and nanoparticles of aluminum hydroxide were allowed to settle at the bottom of the electrochemical reactor.
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