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Ecological sanitation as contribution to food security

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Ecological sanitation as contribution to food security

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Samenvatting

Agriculture serves as the backbone for many sub-Saharan countries. Thus, the development of agricultural production directly affects poverty alleviation, economic growth and social improvement. Africa’s current rapid growth rates have led to an intensifying land use in order to meet food demands and livelihood. Combined with inappropriate management practices and sporadic external inputs important soil nutrients declined and caused crop production to decrease or stagnate. Consequently, sustainable technologies and practices are essential for the complex and interlinked factors that lead to nutrient depletion and soil degradation.
Ecological sanitation is a way to facilitate the recirculation of potential resources in human excreta into agriculture. Attention should be paid to source separated urine as it contains valuable nutrients like nitrogen, phosphorous and potassium. For this research liquid human urine was converted into a solid fertilizer by using solar energy. After complete evaporation of 51.4 liter urine 425 g of solid material was recovered. The outcome contains an N-P-K rating of 2 - 4 - 16. Thus, essential nutrients as nitrogen, phosphorous and potassium could be concentrated. Results were comparable to organic and inorganic fertilizer on the market. The state of perception of Ugandan farmers towards the solid fertilizer was more encouraging than the use of urine in its liquid form. 79% would prefer to use the solid organic urine fertilizer that is produced by the solar still.
To help countries to reverse the arising problems the use of urine as an alternative to inorganic fertilizer should be considered. If human urine is properly collected and used for agriculture it will further improve sanitation coverage in the communities and lead to less costs in crop production.

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OrganisatieHZ University of Applied Sciences
OpleidingWatermanagement/ Aquatische Ecotechnologie
InstituutDelta Academy
PartnersMinistry of Water and Environment, Oeganda
Gepubliceerd in
Datum2014-08-28
TypeBachelorscriptie
TaalEngels

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