Preparation and Characterization of nZVI, Bimetallic Fe⁰-Cu, and Fava Bean Activated Carbon-Supported Bimetallic AC-F e⁰-Cu for Anionic Methyl Orange Dye Removal

Nano zero-valent iron (nZVI), bimetallic Nano zero-valent iron-copper (Fe-0- Cu), and fava bean activated carbon-supported with bimetallic Nano zero-valent iron-copper (AC-F e(0)-Cu) were prepared and characterized by DLS, FT-IR, XRD, and SEM. The influence of the synthesized adsorbents on the adsorption and removal of soluble anionic methyl orange (M.O) dye was investigated using UV-V spectroscopy. The influence of numerous operational parameters was studied at varied pH (3-9), time intervals (15-180 min), and dye concentrations (25-1000 ppm) to establish the best removal conditions. The maximum removal efficiency of M.O. using the prepared adsorbent materials reached about 99%. The removal efficiency is modeled using response surface methodology (RSM). The Bimetallic Fe-0-Cu, the best experimental and predicted removal efficiency is 96.8% RE. For the H2SO4 chemical AC-Fe-0-Cu, the best experimental and removal efficiency is 96.25% RE. The commercial AC-Fe0-Cu, the best experimental and predicted removal efficiency is 94.93%RE. This study aims to produce low-cost adsorbents such as Bimetallic Fe0-Cu, and Fava Bean Activated Carbon-Supported Bimetallic AC-Fe0-Cu to treat the industrial wastewater from the anionic methyl orange (M.O) dye and illustrate its ability to compete H2SO4 chemical AC-Fe0-Cu, and commercial AC-Fe0-Cu.