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Forskningsartikel2009Vetenskapligt granskad

Peepoo bag: self-sanitising single use biodegradable toilet

Vinnerås, Björn; Hedenqvist, M; Nordin, Annika; Wilhelmsson, A

Sammanfattning

Unsafe water, sanitation and hygiene together with deficient nutritional status are major contributors to the global burden of disease. Safe collection, disposal and reuse of human excreta would enable the risk of transmission of diseases to be decreased and household food security to be increased in many regions. However, the majority of the 2.5 billion people lacking improved sanitation comprise poor people in societies with weak infrastructure. This study developed a low cost sanitation option requiring little investment and maintenance-a single use, self-sanitising, biodegradable toilet (Peepoo bag) and tested it for smell, degradability and hygiene aspects. It was found that no smell was detectable from a 25 mu m thick bag filled with faeces during 24 h in a 10m(2) room at 30 degrees C. Bags that had been in contact with urea-treated faeces or urine for 2 months in air, compost or water at 24 or 37 degrees C showed little signs of degradation. Furthermore, pathogen inactivation modelling of the 4 g of urea present in the bag indicated that appropriate sanitation of faecal material collected is achieved in the bag within 2-4 weeks, after which the bag can be degraded and reused as fertiliser.

Nyckelord

biodegradable plastics; disease prevention; human excreta; nutrient reuse; sanitation; single-use toilet

Publicerad i

Water Science and Technology
2009, Volym: 59, nummer: 9, sidor: 1743-1749
Utgivare: I W A PUBLISHING

      SLU författare

      • Globala målen

      SDG2 Avskaffa hunger, uppnå tryggad livsmedelsförsörjning och förbättrad nutrition samt främja ett hållbart jordbruk
      SDG3 Säkerställa hälsosamma liv och främja välbefinnande för alla i alla åldrar
      SDG6 Säkerställa tillgången till och en hållbar förvaltning av vatten och sanitet för alla
      SDG12 Säkerställa hållbara konsumtions- och produktionsmönster

      UKÄ forskningsämne

      Miljö- och naturvårdsvetenskap

      Publikationens identifierare

      DOI: https://doi.org/10.2166/wst.2009.184

      Permanent länk till denna sida (URI)

      https://res.slu.se/id/publ/49911