الفهرس | Only 14 pages are availabe for public view |
Abstract Water is exposed to pollution from the large quantities of effluent that industry daily discharge into the rivers, sewage works, etc. With ions of non-ferrous toxic metals such as Nickel, Cadmium, Zinc, Lead, Magnesium, and Copper. Several techniques are available for the removal of such ions from wastewater, including adsorption, precipitation, and separation by using ion exchange. Adsorption is now recognized as an effective and economic method for heavy metal removal from low- concentration wastewater. The graphene oxide was produced from graphite powder using a modified Hummer’s technique, then altered by doping with acid-activated bentonite. The advantages of these materials are due to their low cost and metal binding capacities and their ability to remove unwanted heavy metals from contaminated water. This work studied the Copper and Zinc adsorption behavior on modified graphene oxide based on pH influence, equilibrium adsorption capacity, initial concentration of metals, temperature, contact time, sorbent dosage, and kinetic studies influence. The modified Hummer’s process was used to generate graphene oxide, which was subsequently transformed to modified GO by doping acid-activated bentonite with HCl, demonstrating that modified bentonite had better adsorption qualities than natural bentonite. The differences in the Physico-chemical properties of the adsorbent were demonstrated using different analytical techniques such as TEM, SEM, EDAX, FTIR, and XRD |