LDH-ɣ-Fe2O3-MoS2 composite for vegetable oil and Pb2+ removal from water

Abstract

Water pollution is a global concern. Inorganic and organic pollutants constitute primary pollutants in water resources. Therefore, it is of great concern to develop advanced sorbent materials for effective and efficient removal of metals and oil from water. In this study, synthesis of new LDH composites which would be used for sorption of heavy metals and oils from polluted water. For this purpose, MgAlOH-ɣ-Fe2O3-MoS2 composite was prepared and characterizations were performed by FT-IR and XRD. The XRD powder pattern of the composite showed that it contained γ-Fe2O3, MgAl(OH)14.xH2O and MoS2. Thermal stability of the composite was investigated via DTA/TG technique. MgAlOH-ɣ-Fe2O3-MoS2 composite showed highly efficient sorption for vegetable oil up to 418% times of its own weight. The ability of MgAlOH-ɣ-Fe2O3-MoS2 composite for removing Pb2+ ions from aqueous solution. Pb2+ ion analysis was made by ICP-OES. The effect of Pb2+ amounts, pH, sorbent amounts, and solvent flow rate on the adsorption capacity of MgAlOH-ɣ-Fe2O3-MoS2 composite were also investigated.