ABSTRACT
Research on preconcentration of metal cations from water on mesoporous metal-organic frameworks (MOFs) and composites of mesoporous MOFs with other suitable sorbents is ongoing. Arsenic in the As (V) and As (III) forms is considered to be one of the most toxic inorganic pollutants present in water. Contemporary methods for the removal of arsenic from water are based on adsorption. Water-stable MOFs are promising sorbents for removal of arsenic from water. The adsorption mechanism was explained as the coordination of U (VI) with the amino groups in the modified MOFs. The world's oceans contain approximately 4.5 billion tons of uranium, which is a thousand times more than the estimated amount of uranium present in ores worldwide. Therefore, the extraction of uranium from seawater is being actively explored. Adsorption of uranium from water is a promising method among the other methods that include ion exchange and extraction.
