Sustainable nutrient recovery from synthetic urine by Donnan dialysis with tubular ion-exchange membranes

Chen, Hui; Shashvatt, Utsav; Amurrio, Fabian; Stewart, Kaylyn; Blaney, Lee

doi:10.1016/j.cej.2023.141625

Cited by 8 publications

(2 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The use of an ion exchange membrane eliminated the regeneration process when using resins. Several recent advances of Donnan dialysis include using ligands to enable extracting phosphate from alum-laden waste activated sludge instead of wastewater, 99 using tubular anion- and cation-exchange membranes to simultaneously recover ammonium and phosphate from urine as struvite, 100 and more. 101 While these new processes are promising to minimize or eliminate regeneration, more work is needed beyond proof-of-concept demonstration to facilitate field implementations.…”

Section: Designing Selective Ion Exchange Processes To Minimize Ion E...mentioning

confidence: 99%

Ion exchange enabled selective separation from decontamination to desalination to decarbonization: recent advances and opportunities

Wang,

Zhang,

Dong

et al. 2024

Environ. Sci.: Water Res. Technol.

View full text Add to dashboard Cite

show abstract

Section: Designing Selective Ion Exchange Processes To Minimize Ion E...mentioning

confidence: 99%

Ion exchange enabled selective separation from decontamination to desalination to decarbonization: recent advances and opportunities

Wang,

Zhang,

Dong

et al. 2024

Environ. Sci.: Water Res. Technol.

View full text Add to dashboard Cite

show abstract

“…Using a synthetic recipe makes it easier to reverse-engineer processes and identify metabolites or properties of urine that significantly affect the outcome of a treatment (Solanki and Boyer, 2019). In addition, different technologies can be more fairly compared against each other if the same synthetic urine recipe is used to evaluate their differences (Chen et al, 2023). 4.…”

Section: Why and When To Use Synthetic Urine For Experimentation?mentioning

confidence: 99%

An urgent call for using real human urine in decentralized sanitation research and advancing protocols for preparing synthetic urine

Simha,

Courtney,

Randall

2024

Front. Environ. Sci.

View full text Add to dashboard Cite

Recycling resources excreted in human urine can help achieve a sustainable future and circular economy in the sanitation space. However, many studies researching different technologies for safely recycling urine do not use real human urine for experimentation, relying instead on recipes for making synthetic or artificial solutions that attempt to mimic the composition of real human urine. This methodological choice is the focus of this article, which points out that the real urine matrix is extremely complex, with a metabolome (>2,500 metabolites) that differs greatly from that of synthetic urine (<15 metabolites). Therefore, experimental results obtained using synthetic urine can also differ from those obtained using real urine. To exemplify this, we review published literature in terms of four aspects: i) solubility of chemicals and buffering capacity of urine, ii) dissolved organics and membrane fouling, iii) thermodynamic modelling of chemical speciation in urine, and iv) removal of pollutants from urine. We recognise that there is a place for synthetic urine in sanitation research and provide examples of studies where its use is appropriate. Lastly, based on literature from the medical sciences, we provide preliminary guidelines on protocols for preparing synthetic urine that could improve experimentation involving human urine and accelerate the water sector’s transition to circularity.

show abstract

Donnan dialysis-based approach for reclamation of waste acid with a low concentration

Ma,

Jia,

et al. 2024

Chemical Engineering Research and Design

View full text Add to dashboard Cite

Sustainable nutrient recovery from synthetic urine by Donnan dialysis with tubular ion-exchange membranes

Cited by 8 publications

References 60 publications

Ion exchange enabled selective separation from decontamination to desalination to decarbonization: recent advances and opportunities

Ion exchange enabled selective separation from decontamination to desalination to decarbonization: recent advances and opportunities

An urgent call for using real human urine in decentralized sanitation research and advancing protocols for preparing synthetic urine

Donnan dialysis-based approach for reclamation of waste acid with a low concentration

Contact Info

Product

Resources

About