AUTHOR=Campos José Luis , Crutchik Dafne , Franchi Óscar , Pavissich Juan Pablo , Belmonte Marisol , Pedrouso Alba , Mosquera-Corral Anuska , Val del Río Ángeles 

TITLE=Nitrogen and Phosphorus Recovery From Anaerobically Pretreated Agro-Food Wastes: A Review

JOURNAL=Frontiers in Sustainable Food Systems

VOLUME=2

YEAR=2019

URL=https://www.frontiersin.org/journals/sustainable-food-systems/articles/10.3389/fsufs.2018.00091

DOI=10.3389/fsufs.2018.00091

ISSN=2571-581X

ABSTRACT=<p>Anaerobic 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 residues.</p>