Resource Recovery from Synthetic Nitrified Urine in the Hydroponic Cultivation of Lettuce (Lactuca sativa Var. capitata L.)

The application of hydroponic cultivation fertilized with biologically nitrified synthetic urine can produce nitrate-rich fertilizer for lettuce (Lactuca sativa var. capitata L.). mounting water crisis and depletion natural resources makes nitrogen recovery from human a practical option. Nitrified be used in indoor vertical is characterized by high degree element recovery. Because its ammonium content, hydrolyzed fresh may toxic. A nitrification sequencing batch reactor suspended activated sludge biomass ensured stabilization biological conversion into fertilizer. diluted was then supplied soilless cultivation. results show that an excellent source bioavailable phosphorus and, proper enrichment microelements, could replace commercial fertilizers systems. yield quality parameters cultivated enriched were comparable to those obtained mass balance calculation showed industry-scale production based on collected few hundred people single unit.