 The pollution of water bodies due to the discharge of untreated effluents is a global issue. Different technologies have been implemented to remove contaminants from wastewater before disposal. One such technology is adsorption using residual biomasses, which is becoming increasingly popular due to their low cost and abundance. In this paper, the synthesis of modified biochar from agro-industrial residues derived from the wheat processing industry was studied. These residues were used to create biochar, which was then tested for its ability to remove chromium, 6, and methylene blue, MB. The biochar was prepared using a ramp function of 5 degrees Celsius per minute up to 250 degrees Celsius for 30 minutes. Adsorption tests were conducted in a batch system, where 30 milligrams of biochar was added to 10 milliliters of solution. From scanning electron microscopy, SAM, analysis, the formation of tubular cavities in porous structures was observed, resulting from basic hydrolysis with potassium hydroxide. For CR-6, the biochar had an adsorption capacity. This article was authored by Candelaria Tejadotovar, Angel Villabonortis, and Rodrigo Ortegatoro. We are article.tv, links in the description below.