01506nam a2200217 a 450000100080000000500110000800800410001910000220006024500830008226001740016552007750033965000100111465000270112465000270115165000150117870000190119370000190121270000160123170000210124770000200126821151422019-12-17       2019    bl uuuu     u00u1 u    #d1 aDELA PICCOLLA, C.  aImproving bone-based phosphate fertilizer by pyrolysis.h[electronic resource]  aIn: WORLD CONGRESS OF SOIL SCIENCE, 21., 2018, Rio de Janeiro. Soil science: beyond food and fuel: proceedings... Viçosa, MG: SBCS, 2019. v. 2, p. 381. WCSS 2018.c2018  aPhosphorus is a macronutrient for all organisms, and its projected future scarcity generates a need for more efficient P recycling technologies. Because animal bones are rich in P, they could be employed to recycle part of P fertilizer inputs in agriculture, while diminishing environmental issues and health risks associated with cadmium in phosphate rock-based fertilizers. Moreover, pyrolysis is an alternative treatment to calcination that could both eliminate disease sources from bones and generate an efficient fertilizer ("bone char"). Our aim was to evaluate the physical and chemical characteristics of P in pyrolized pig bones as affected by temperature (400, 550 and 800 °C) and atmospheric conditions (sealed chamber, purging with N2, or steam activation).  aBones  aPhosphorus fertilizers  aFertilizante Fosfatado  aRadiação1 aHESTERBERG, D.1 aNOVOTNY, E. H.1 aMURAOKA, T.1 aANASTACIO, T. C.1 aREIS, J. V. dos