Demissie, Natnael
- Department of Energy and Technology, Swedish University of Agricultural Sciences
- Addis Ababa University
Abstract
In household wastewater, a large proportion of organic micropollutants (OMPs) load is attributed to human urine. OMPs could pose a risk to human and environmental health when urine collected in source-separating sanitation systems is recycled as crop fertiliser. This study evaluated degradation of 75 OMPs in human urine treated by a UV-based advanced oxidation process. Fresh urine and water samples were spiked with a broad range of OMPs and fed into a photoreactor equipped with a UV lamp (185 and 254 nm) that generated free radicals in situ. Degradation rate constant and the energy required to degrade 90% of all the OMPs in both matrices were determined. At a UV dose of 2060 J m-2, average & sigma;OMP degradation of 99% (& PLUSMN;4%) in water and 55% (& PLUSMN;36%) in fresh urine was achieved. The energy demand for removal of OMPs in water was
Keywords
Circular sanitation; Fertiliser; Nutrient recycling; Pharmaceuticals; Urine diversion; Wastewater treatment
Published in
Water Research
2023, volume: 242, article number: 120221
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
SLU Authors
Simha, Prithvi
- Department of Energy and Technology, Swedish University of Agricultural Sciences
- Department of Energy and Technology, Swedish University of Agricultural Sciences
Lai, Foon Yin
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences
Ahrens, Lutz
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences
Vinnerås, Björn
- Department of Energy and Technology, Swedish University of Agricultural Sciences
- Department of Energy and Technology, Swedish University of Agricultural Sciences
Global goals (SDG)
SDG6 Clean water and sanitation
UKÄ Subject classification
Water Treatment
Publication identifier
- DOI: https://doi.org/10.1016/j.watres.2023.120221
Permanent link to this page (URI)
https://res.slu.se/id/publ/123590