This work presents the use of Coco fibers (Cocos nucifera), sugarcane bagasse (Saccharum spp) and corn straw (Zea mays) were evaluated as Cr(VI) biosorbents by analyzing pH effect on biosorption capacity. The use of these residual biomasses containing high cellulose, hemicellulose and lignin contents is a promising biotechnological alternative for the adsorption of hexavalent chromium, in comparison with conventional techniques. The the Cocos nucifera fiber waste yielded the best biosorption results, both in the form of fibers or in its powdered form with a maximum value greater than 90% removal.