Due to its widespread industrial use, chromium has become a serious pollutant in diverse environmental settings. The main source of chromium pollution including the Republic o Moldova is industry. It is a great need to develop new eco-friendly methods of chromium removal. Biosorption of heavy metals is a most promising technology involved in the removal of toxic metals from industrial waste streams and natural waters. Metal removal treatment systems using microorganisms are cheap because of the low cost of sorbent materials used and as they do not add other ions or toxic chemicals to the environment. The present review discusses hexavalent chromium biosorption properties of bacteria, microalgae and fungi, as well as adsorption isotherms (Langmiur, Freundlich, Langmiur-Freundlich) used in the evaluation of the adsorptive capacity of the biomaterial.