so. funds these elements are generally either not very abundant are not concentrated in deposits martin who drove studies how to recover these minerals from crushed rock. using water and a number of chemicals that were frothy after this prepared for the minerals. ideally the desired mineral particles were to guess bubbles and rice to the surface . there they can be skimmed off layer by layer. the problem is this so-called flotation technique is not environmentally friendly in part because of the flotation reagents. one strategy and making the production more eco friendly focuses on the chemicals we have to research projects that are trying to replace the chemicals by a biological reagents that is we use microorganisms send their diverse interaction