Phosphorus recovery through biologically induced precipitation by partial nitritation-anammox granular biomass

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

“…This fact is due to the high buffer capacity of the anaerobic digester effluent caused by NH 3 /NH + 4 and H 2 CO 3 /HCO − 3 /CO 2− 3 equilibria. In this sense, the use of biological processes, which involve reactions with HCO − 3 and/or ammonium consumption or pH changes, could be considered an attractive pretreatment to reduce the consumption of reagents during phosphorus recovery (Mañas et al, 2011;Johansson et al, 2017;Simoes et al, 2018). For example, the previous application of nitrification Equation 3or partial nitrification-anammox processes (Equation 4) would decrease the amount of NaOH required up to 50 and 89%, respectively, and, in the last case, struvite recovery would be economically profitable (Campos et al, 2017).…”

Recovery of phosphorus from incinerated sewage sludge ash by combined two-step extraction and selective precipitation

“…Current worldwide available phosphate ore reserves are predicted to be depleted within the next 50-100 years [1][2][3] while Chinese phosphate ore might be exhausted within 37 years [4]. After mining, only 10% of P is consumed by human activities [5], and then the consumed-P and waste-P are disposed as waste streams [6].…”

Potassium recovery from centrate: taking advantage of autotrophic nitrogen removal for multi‐nutrient recovery

“…A lab‐scale PNA sequencing batch reactor (Chem‐P PNA) with a minimum volume of 10 L was operated as previously described by Johansson et al . The reactor was fed with centrate collected from WWTP Terri (Cornellà de Terri, Catalonia, Spain).…”