Campos Gómez, José LuisCrutchik, DafneFranchi, ÓscarPavissich, Juan PabloBelmonte, MarisolPedrouso Fuentes, AlbaMosquera Corral, AnuskaVal del Río, Ángeles2022-03-152022-03-152019Frontiers in sustainable food systems 2 (2019) 91. https://doi.org/10.3389/fsufs.2018.00091http://hdl.handle.net/10347/27662Anaerobic digestion (AD) is commonly used for the stabilization of agro-food wastes and recovery of energy as methane. Since AD removes organic C but not nutrients (N and P), additional processes to remove them are usually applied to meet the stringent effluent criteria. However, in the past years, there was a shift from the removal to the recovery of nutrients as a result of increasing concerns regarding limited natural resources and the importance given to the sustainable treatment technologies. Recovering N and P from anaerobically pretreated agro-food wastes as easily transportable and marketable products has gained increasing importance to meet both regulatory requirements and increase revenue. For this reason, this review paper gives a critical comparison of the available and emerging technologies for N and P recovery from AD residueseng© 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/)Ammonia combustionAmmonia hydrolysisBioaccumulationCANDO processEnvironment benefitNutrient recoveryPhosphorus precipitationjournal article10.3389/fsufs.2018.000912571-581Xopen access