Application of adsorbents based on LaFe1-xMnxO3 perovskites to treat As, Pb in contaminated groundwater in the craft village

Ninh Vu The, Dung Nguyen Viet, Dai Luu Minh, Anh Nguyen Thanh

Abstract


The nanoparticle crystals of perovskite LaFe1-xMnxO3 were prepared by the PVA (polyvinyl alcohol) gel combustion method to determine the adsorption capacity of As(V), Pb2+ from solution was investigated. Single-phase crystalline perovskite of LaFe1-xMnxO3 is formed by solid solution formation which completely replaces LaFeO3 perovskite and LaMnO3 perovskite. In LaFe1-xMnxO3 perovskites, the x substitution composition, or the rate of participation to form the substitution solid solution between the two components LaFeO3 and LaMnO3 will determine the type of original structure, the interaction between the Fe and Mn in in the crystal lattice. Thereby determining the characteristics and adsorption activity of perovskite LaFe1-xMnxO3. Perovskite LaFe1-xMnxO3 with the formula LaFe0.3Mn0.7O3 gave the best As(V) adsorption efficiency on the x components, while the LaFe0.7Mn0.3O3 formula gave the best As(V) adsorption efficiency on the x components. The LaFe1-xMnxO3 perovskite-based adsorbent pelletized with the composition LaFe0.3Mn0.7O3-LaFe0.7Mn0.3O3-bentonite has practical potential to remove arsenic, lead in contaminated water.

Keywords


Perovskite LaFe1-xMnxO3; arsenic-lead adsorption; contaminated groundwater; craft village.

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References


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DOI: https://doi.org/10.51316/jca.2021.126

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