ABSTRACT
This chapter deals with findings encountered in the period of 2014 to 2019, on the use of hollow fibers for the treatment of a series of metal-bearing aqueous solutions. Minimizing the impact of pollutants discharged into the environment either in the form of gases or metal-bearing liquid effluents is of concern industrially. However, in the case of metal-bearing effluents, a number of solutions, in the form of traditional and advanced separation technologies, can be used to remediate these unwelcome situations. In this category of compounds, either amines or quaternary ammonium salts are included. On the other hand, quaternary ammonium salts are also included into ionic liquids category. The chemistry associated with this group of reagents involves the solvation of neutral metal compounds by organic compounds which contain at least one electron-donor atom. The stripping of loaded metals from the organic phase can be performed by a variety of reagents or metal-complexing agents, specific for each system.
