SOFIA TEODORESCU, RODICA MARIANA ION, GHEORGHE NECHIFOR, IOAN ALIN BUCURICA, IOANA DANIELA DULAMA, RALUCA MARIA STIRBESCU, NICOLAE MIHAIL STIRBESCU ADSORPTION OF CHROMIUM (VI) FROM WATER SOLUTION ONTO POLYMERIC MEMBRANE SYSTEMS The toxic metals have shown a significant concentration increases in the superficial waters as a result of inappropriate residuals discharge by the municipality and industry. For chromium species can be clearly distinguished two oxidation states: Cr(VI) and Cr(III). Also, chromium’s hexavalent form, can be included in A group of human carcinogen for its mutagenic and carcinogenic characteristics. For Cr(VI) separation and recovering, different systems have been used, the chemical membranes being a valuable solution. In order to increase their efficacy, magnetite has been added, creating a complex system. The morphology and surface characteristics of the new systems (polysulfone (PSf) membrane in N-methyl-pyrrolidone (NMP) with magnetite) have been proved with the following types of analysis: FT-IR, Raman, SEM, OM and colorimetric determination of chromium. Magnetite incorporated in the polysulfone/NMP/Fe3O4 membrane is one new solutions used with success in retention of Cr (VI) from wastewater (85%).