ABSTRACT
There is an increased release of chromium into the environment because of constant industrial and various anthropogenic processes. Chromium is a well-known highly toxic metal for living organisms. Hexavalent and trivalent chromium both are considered as toxic heavy metals, but hexavalent chromium is considered a priority pollutant. Some of the primary techniques that remove heavy metals in the environment result from biological activities. Among these, the successful techniques are biosorption, bioaccumulation, and bioreduction. This chapter is written in order to give an introduction to the readers about cleaning up chromium metal wastes with the help of bacteria and algae.
