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- W2184157424 abstract "Phosphorus (P) resources globally are considered limited. P originates from a mined non-renewable rock, therefore its presence in the urban-shed demonstrates the impact of urbanisation and the anthropogenic influences on nat ural cycles of material flow. Any recycling of P is therefore becoming increasingly important. In passing through the linear urban system P is mobilised from particulate to soluble forms. With the present level of nutrient losses from urban water management into the aquatic environment (leading to adverse health and ecological impacts) commitment to urban or peri -urban ecological agriculture (without synthetic fertilisers) offers an attractive solution to the management of urban organic “wastes”. The ma cro-nutrients stemming from human metabolism contained mainly in urine are of particular interest. Sustainable “Urban Drainage System” (UDS) technology should support closing of cycles of natural resources such as nutrients in urban water management. This paper describes a case study in Harare, Zimbabwe, where tracking of P-bearing materials and fluxes of P within the UDS is being conducted. The focus of the methodology is on spatial and time segregation of the different fractions of urban waste flows and the urban water cycle. The tools used include Material Flow Accounting/Analysis (MFA) and mass balancing techniques. The study seeks to establish a clear pattern of flow of water and matter (P-bearing materials in particular) through a regional economy and the options of short -cutting or closing the open-ended flows." @default.
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- W2184157424 date "1999-01-01" @default.
- W2184157424 modified "2023-09-26" @default.
- W2184157424 title "ESTABLISHING PHOSPHORUS FLUXES THROUGH MATERIAL FLOW ACCOUNTING AND SYSTEMS THINKING IN AN URBAN- SHED IN HARARE, ZIMBABWE" @default.
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