In a study recently published in Science of the Total Environment, we present results from a study that investigated drying of fresh source-separated human urine in five different alkaline media (pH > 11) at elevated temperatures (50 and 60 °C) with minimal loss of urea, urine’s principal nitrogen compound. We found that it was possible to concentrate urine 48… Continue reading New Publication on drying human urine using different alkaline media & temperatures
Results for "alkaline urine dehydration"
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Sanitation360 wraps up the Hiedanranta urine drying pilot – Thank you Tampere & Lielahti Manor
Towards the end of January, Jenna Senecal and Viktoria Wiklicky from Kretsloppsteknik were in Tampere, Finland to decomission our 25 L/day urine drying system that was in operation at the basement of Lielahti Manor house. The system was in use in between June 2019 and January 2020, and was a great showcase of the group’s… Continue reading Sanitation360 wraps up the Hiedanranta urine drying pilot – Thank you Tampere & Lielahti Manor
Urine drying piloted in collaboration with peeKeep in Arles, France
In October 2019, Jenna Senecal travelled to Arles, France, to connect with Nick Davies from peeKeep. Nick has designed a new toilet and cabin and wanted to test how our alkaline dehydration technology could be integrated. The toilet uses a conveyer belt to transport the excreta and toilet paper to a drying chamber outside (the… Continue reading Urine drying piloted in collaboration with peeKeep in Arles, France
Technical Evaluation of Urine Drying in Pilot Scale – a Field Experiment in Finland
The master thesis, Technical Evaluation of Urine Drying in Pilot Scale – a Field Experiment in Finland (author Caroline Karlsson), is now published at the DiVA portal. In this interesting master project the urine drying technology was tested for the first time in field conditions at a military base in southwestern Finland. For more information:… Continue reading Technical Evaluation of Urine Drying in Pilot Scale – a Field Experiment in Finland
Urine drying research gets funding from FORMAS annual open call
We are quite happy to share that our project proposal to FORMAS, the Swedish Research Council for Sustainable Development, has recevied funding of 3 million SEK via the annual open call to continue research on the urine dehydration technology. Through this project, the overall goal will be to develop next generation urine dehydrator prototypes that… Continue reading Urine drying research gets funding from FORMAS annual open call
The urine drying pilot is operational
After a week in the city of Tampere in Finland, our team over there finished integrating a urine drying bed into the Biomaja toilet. The entire toilet is on a trailer, making it portable and houses a dry urinal and a urine diverting dry toilet. The urine treatment is done by alkaline dehydration, a technology… Continue reading The urine drying pilot is operational
New Publication: Hygiene aspects of urine drying technology
In a new paper published in Water Research, Senecal et al. assessed what hygienic health risks may occur when human urine is dehydrated. The experiment was set up to simulate that the last person using the toilet (before the dehydration medium is changed) is contaminating the medium with misplaced faeces, with no time for dehydration of… Continue reading New Publication: Hygiene aspects of urine drying technology
New publication on the drying of ion-exchanged human urine
In a recent study published in Water Research, members of the Kretsloppsteknik group investigated the possibility of alkalising human urine by anion-exchange and dehydrating urine into a dry fertiliser powder.Fresh urine was passed through an ion-exchanger, stabilised by alkalisation (pH >10), added to an alkaline media (wood ash/alkalised biochar) and dehydrated Simha, P., Senecal, J.,… Continue reading New publication on the drying of ion-exchanged human urine
Implementing Urine Drying technology in Durban, South Africa
Prithvi Simha, Jenna Senecal, and Björn Vinnerås just returned after spending a week in Durban, South Africa. We travelled there to present our novel sanitation technology called alkaline urine dehydration to several potential collaborators, and to see if the technology could fit into the local context. We met with sanitation experts from the Pollution Research… Continue reading Implementing Urine Drying technology in Durban, South Africa
Liquid Gold: How Stronger Food Systems Can Start In Your Toilet
Jenna Senecal was interviewed by Modern Farmer about the potential to safely recover nutrients from human urine to help protect the environment. Scroll down to read the article.