The present study is to investigate the possibility of using wastes in the form of scrap iron (ZVI) and/ or aluminum ZVAI for the detention and immobilization of the chromium ions in simulated wastewater. Different batch equilibrium parameters such as contact time (0-250) min. sorbent dose (2-8 g ZVI/100 mL and 0. 2-1 g ZVAI/100 mL). https://macorners.shop/product-category/graduation-cap-pendant-necklace-with-birthstone/