TY - CONF A1 - Adam, Christian A1 - Krüger, Oliver A1 - Herzel, Hannes A2 - Lederer, J. A2 - Laner, D. A2 - Rechberger, H. A2 - Fellner, J. T1 - Phosphorus flows in German sewage sludge ashes and potential recovery technologies T2 - International workshop on technospheric mining - Mining the technosphere - drivers and barriers, challenges and opportunities N2 - Phosphorus (P) is essential for all forms of life and cannot be substituted. It is one of the macro nutrients applied in form of mineral or organic fertilizers in agricultural crop production. Mineral P fertilizers are generally based on phosphate rock, a limited resource. Western Europe completely depends on imports as it has no own relevant phosphate mines. The most abundant phosphate deposits are located only in a few countries such as Morocco, China, South Africa and the United States of America. Furthermore, phosphate rock and as a consequence mineral P fertilizers are often contaminated with the toxic elements cadmium and uranium. In Order to substitute phosphate rock P-bearing waste streams are investigated for their potential to be recyded as fertilizers. Wastewater is one of the important P-bearing waste streams that were in the focus of research in the last 10 years. German wastewater is e.g. a carrier of approx. 70,000 t of phosphorus per year. T2 - International workshop on technospheric mining - Mining the technosphere - drivers and barriers, challenges and opportunities CY - Vienna, Austria DA - 01.10.2015 KW - Phosphorus recovery KW - Sewage sludge ash PY - 2015 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/34542 AN - OPUS4-34542 SN - 978-3-85234-132-3 SP - 77 EP - 80 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany