Elimination of Cr (VI), Pb (II), V (V), and Cd (II) ions from Titanium oxide Pigment from Rosetta ilmenite Concentrate Using synthesised Cellulose Phosphorus Oxychloride
Islam M. Fouda, Mohamed Y. El‐Kady, Enass M. El‐Sheikh, Ahmed H. Orabi, Ahmed O. Youssef
Abstract
The cellulose impregnated phosphorus oxychloride (COP) was newly prepared. Its efficiency was assessed for the first time by removing Cr6+, Pb2+, V5+, and Cd2+ ions from a diluted sulphuric solution of titanium liquor to gain the purified titanium dioxide. For the complete characterisation of the synthetic COP adsorbent, we used different instrumental performances namely; FTIR, SEM, EDX, and 1H NMR. The factors of adsorption and removal of Cr6+, Pb2+, V5+, and Cd2+ ions from a diluted sulphuric leach liquor solution of titanium liquor have been optimized. The removal of Cr6+, Pb2+, V5+, and Cd2+ ions was achieved using a new COP at 0.25 M/L acid concentration using 100 mg COP adsorbent for 60 minutes. The maximum Cr6+, Pb2+, V5+, and Cd2+adsorption capacity and the removal efficiency were 132.5, 141.7, 121.5, 113.7 mg/g and 88.3, 94.5, 81.0, 75.8%, respectively. Finally, titanium sulphate leaching liquor produced from ilmenite concentrate was treated with optimum adsorption parameters for Cr6+, Pb2+, V5+, and Cd2+ ions removal to gain the purified titanium dioxide.