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Diverting human urine from outhouses into agriculture in Nicaragua: for sanitation, fertilizer and recycling purposes
Mid Sweden University, Faculty of Science, Technology and Media, Department of Ecotechnology and Sustainable Building Engineering.
2017 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

Human urine is a   valuable resource which has good potential to be used as a fertilizer all   over the world. In the developing countries sanitation and food security are   both issues that need urgent attention.    A urine separation toilet can be constructed with minimal investment   in the Nicaraguan context, and the usage of the urine as a fertilizer can   help establish higher yields and is a good alternative to chemical   fertilizers. This field experiment is trying this in practice in the context   of rural Nicaragua, to determine the effect of urine on two plants on. For   this study, the common bean (Phaseolus vulgaris) and the Chaya (Cnidoscolus   aconitifolius) was selected and the results confirm that urine has potential   as a fertilizer in the Nicaragua context. The common bean yield was twice as   large after urine fertilization and the Chaya reacted positively to urine   fertilization. For urine separation purposes, two different separators were   constructed on the site to showcase the benefits with separating the urine   from the faeces, creating lower latrine volume and better sanitation in the   outhouse. The risks associated with human urine are low if the urine is   separated securely to avoid crosscontamination from faeces. If a   safety-barrier system is adopted, the overall risks with using urine as a   fertilizer are negligible. The spreading potential of urine separation and   fertilization in rural Nicaragua is high, but more experiments and   demonstrations are needed to reach adopters of the technology.  

Abstract [es]

La orina humana es un recurso valioso que tiene un   buen potencial para ser utilizado como fertilizante en el mundo entero. En   los países en vías de desarrollo, el saneamiento y la seguridad alimentaria   son dos temas que necesitan atención urgente. Un inodoro de separación de   orina puede ser construido con una inversión mínima en el contexto   Nicaragüense, y el uso de la orina como fertilizante puede ayudar a   establecer mayores rendimientos y es una buena alternativa a los   fertilizantes químicos. Este experimento de campo está probando esto en la   práctica en el contexto de Nicaragua rural, para determinar  la diferencia en  crecimiento entre dos cultivos con y sin   fertilización de orina. Para este estudio se seleccionó el frijol común   (Phaseolus vulgaris) y la Chaya (Cnidoscolus aconitifolius) El rendimiento de   frijol fue dos veces mayor después de la fertilización de la orina y el Chaya   reaccionó positivamente a la fertilización de la orina. Para fines de   separación de orina, se construyeron dos separadores diferentes en el sitio   para mostrar los beneficios con la separación de la orina de las heces,   creando un menor volumen de letrina y un mejor saneamiento. Los riesgos asociados con la orina humana son bajos   si la orina se separa con seguridad para evitar la contaminación cruzada de   las heces. Si se adopta un sistema de barrera de seguridad, los riesgos   generales con el uso de orina como fertilizante son insignificantes. El   potencial de propagación de la separación de orina y la fertilización en   Nicaragua rural es alto, pero se necesitan más experimentos y demostraciones   para llegar a los usuarios de la tecnología.    

Place, publisher, year, edition, pages
2017. , p. 28
Keywords [en]
Nicaragua, Human urine, Urine diversion, Fertilization, Phosphorous.
Keywords [es]
Nicaragua, Orina humana, Desviación de orina, Fertilización de la orina, fósforo
National Category
Environmental Sciences
Identifiers
URN: urn:nbn:se:miun:diva-33221Local ID: MX-V17-G3-003OAI: oai:DiVA.org:miun-33221DiVA, id: diva2:1188608
Subject / course
Environmental Science MV1
Educational program
Eco Entrepreneur for Sustainable Development NEKEG 180 higher education credits
Supervisors
Examiners
Note

2017-06-02

Available from: 2018-08-30 Created: 2018-03-08 Last updated: 2018-08-30Bibliographically approved

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