ABSTRACT
Membrane separation processes have been extensively used for the fractionation/concentration of suspended particles and dissolved substances in different streams. In this context, nanofiltration (NF) appears attractive and has shown potential for the treatment of wastewaters. The main application of NF is in the wastewater treatment, water softening, desalination of brackish water and removal of several compounds, such as pollutants, pesticides, dyes, and organic solvents, from effluents. NF offers selective desalination and is generally used to remove divalent ions such as sulfate and calcium ions and also to separate ions of the same valency. The removal of uranium from drinking water was evaluated by O. Raff et al. Solid phase/solvent extraction and membrane separation are efficient technologies for the removal of uranium from water. Solid phase extraction is a highly efficient methodology for the preconcentration and purification of uranium traces from water.
