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Sammanfattning

To feed the world without transgressing regional and planetary boundaries for nitrogen and phosphorus, one promising strategy is to return nutrients present in domestic wastewater to farmland. This study tested a novel approach for producing bio-based solid fertilisers by concentrating source-separated human urine through acidification and dehydration. Thermodynamic simulations and laboratory experiments were conducted to evaluate changes in chemistry of real fresh urine dosed and dehydrated using two different organic and inorganic acids. The results showed that an acid dose of 1.36 g H2SO4 L-1, 2.86 g H3PO4 L-1, 2.53 g C2H2O4 center dot 2H(2)O L-1 and 5.9 g C6H8O7 L-1 was sufficient to maintain pH

Nyckelord

Acidification; Decentralised sanitation; Fertiliser; Nutrient recycling; Source separation; Wastewater treatment

Publicerad i

Science of the Total Environment
2023, volym: 879, artikelnummer: 163053
Utgivare: ELSEVIER

SLU författare

Globala målen (SDG)

SDG6 Rent vatten och sanitet för alla

UKÄ forskningsämne

Vattenbehandlingsbioteknik

Publikationens identifierare

  • DOI: https://doi.org/10.1016/j.scitotenv.2023.163053

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/122061