Fuente: WIPO "circular economy" A robust and economically viable technology is developed for the phosphorus (P) and metals recovery from dilute aqueous feeds. This is one of the first efforts to recover P and contaminants from the wastewater streams using adsorbents without the need of incineration and acid leaching of the sludge. P is becoming very critical raw material and nutrient for the agricultural and industrial uses and most of the produced materials are lost in the water bodies. The process technology addresses the P management using the cementitious inorganic adsorbent containing transition and alkali metals like Al, Fe, Mg, Ca, Na and S, but not limited to this. The sequence of interconversion in solution chemistry via inorganic sulphates and hydroxides can produce the economic products such as phosphoric acid and struvite or transition metal salts. The developed technology has the potential for scale up on industrial scale, re-use of components and preconcentration of dilute P and metal contents as well as extended use for recovering from other industrial aqueous feeds after the corresponding optimization. The clear advantage with the claimed process is that it can avoid the use of strong mineral acid and high temperature pyrometallurgical treatments to reach the similar products without negative environmental impact.