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

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

Research output: Contribution to journalReview articlepeer-review

33 Scopus citations

Abstract

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.

Original languageEnglish
Article number91
JournalFrontiers in Sustainable Food Systems
Volume2
DOIs
StatePublished - 11 Jan 2019
Externally publishedYes

Keywords

  • CANDO process
  • ammonia combustion
  • ammonia hydrolysis
  • bioaccumulation
  • environmental benefit
  • nutrient recovery
  • phosphorus precipitation

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