01457nam a2200193 a 450000100080000000500110000800800410001910000230006024501200008326002090020352007330041265000100114565000200115565000160117565000110119170000210120270000200122370000200124320783272017-10-27       2017    bl uuuu     u00u1 u    #d1 aNICOLOSO, R. da S.  aStruvite crystallization mitigates reactive N losses from swine manure in-vessel composting.h[electronic resource]  aIn: SIMPÓSIO INTERNACIONAL SOBRE GERENCIAMENTO DE RESÍDUOS AGROPECUÁRIOS E AGROINDUSTRIAIS, 5., 2017, Foz do Iguaçu, Anais... Concórdia: Sbera: Embrapa Suínos e Aves, 2017. SIGERA. p. 349-353.c2017  aABSTRACT: We assessed the addition Mg and P salts to promote struvite crystallization and mitigate reactive N losses from a rotating drum (12 m3 ) used for in-vessel composting of swine manure. The tested treatments were: mixture of sawdust and swine manure (baseline) and the same mixture with the addition of magnesium sulfate and phosphoric acid (MgSO4+H3PO4). Struvite crystallization decreased NH3-N and TN losses by 96.5 and 46%, respectively. Higher N2O-N emissions were related with resolubilization of the struvite under lower pH conditions. Further research is needed to assess strategies for the stabilization of struvite crystals, minoring N losses and increasing nutrient concentration value of the organic compost.  aAbate  aAdubo orgânico  aCompostagem  aSuíno1 aHIGARASHI, M. M.1 aOLIVEIRA, L. V.1 aDALLA COSTA, M.