Seeking data contributions for a compilation of information on recycled fertilizers from human excreta (Project MARA)


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Seeking data contributions for a compilation of information on recycled fertilizers from human excreta (Project MARA)

Dear SuSanA Community,
I hope this message finds you well. I am posting on behalf of Corinna Schröder, a researcher at the Network for Sustainable Sanitation Systems (NetSan) e.V., who is seeking support and input for her important research project: MARA – “Meta-analysis of scientific data on the composition & effects of recycled fertilizers from human excreta.”

About Corinna:
Corinna has a background in environmental engineering and circular economy. Since 2019, she has been working on projects related to Resource-Oriented Sanitation Systems (ROSS).

Project overview:
The MARA project aims to conduct a comprehensive meta-analysis on the quality and fertilizer value of products derived from ROSS/NASS (resource-oriented sanitation systems). This study will provide a condensed overview of the global scientific data from the past 15 years (2009-2024), focusing on:
  • Fertilizer production processes and control parameters
  • Fertilizer properties (nutrient concentrations, hygienic parameters, contaminant concentrations, including pharmaceutical and personal care product values)
  • Agronomic effects (fertilizing effects, nutrient use efficiencies, soil- and ecotoxicological effects)
The results will be presented through various target-group-oriented publications to serve different stakeholders, including policymakers, practitioners, and scientists. This work is crucial for informing legislative processes and supporting the potential inclusion of urine and feces-based fertilizers in fertilizer ordinances, especially within the EU.

How you can help:
Corinna is seeking contributions in the form of:
  • Publications
  • Unpublished data sets or grey literature
  • Contacts with working groups or projects that could provide relevant data
Your input will be invaluable in enriching the meta-analysis and ensuring comprehensive coverage of the topic.

Contact Information:
If you can provide any data or know of potential sources, please contact Corinna directly at  This email address is being protected from spambots. You need JavaScript enabled to view it. .
You can also send the attached document to those who can provide relevant info/data.
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For more details about the project, you can visit the  MARA project page .

Thank you and kind regards,
Daniel Ddiba
Daniel Ddiba
Co-lead for SuSanA WG5: Productive sanitation and food security
Research Associate at Stockholm Environment Institute
Skype: daniel.ddiba
LinkedIn: Daniel Ddiba
Twitter: @DanielDdiba

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