TY - CONF A1 - Krüger, Oliver A1 - Adam, Christian T1 - Sewage sludge ashes - composition, mass flows, and recovery potential T2 - 14th International waste management and landfill symposium - Sardinia 2013 (Proceedings) N2 - Sewage sludge ashes (SSA) represent a possible source of phosphorus (P) and technology metals. So far, the sole external source for P, that is indispensable for all animate beings, is rock phosphate, a finite resource. The EU depends completely on the import from possible politically instable regions. Furthermore, rock phosphate is often contaminated with heavy metals like Cd and U, leading to health and environmental hazards. P recovered from SSA might diminish these problems. SSA of German mono incineration facilities are analyzed for their elemental composition. More than 95% of the emerging SSA is monitored, enabling the determination of complete mass flows of the ashes and their components. Initial results indicate a P recovery potential of 16,000 t/a (11% of the annual P demands for fertilizer production). The concentrations of Cd and U in SSA are one to two Orders of magnitude lower than in rock phosphate and could help to reduce possible hazards. PB - CISA Publisher T2 - 14th International waste management and landfill symposium - Sardinia 2013 CY - Cagliari, Italy DA - 30.09.2013 PY - 2013 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/29734 AN - OPUS4-29734 SP - 1 EP - 5 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany