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Please use this identifier to cite or link to this item: http://hdl.handle.net/10400.5/2689

Title: Proportion, composition and potencial N mineralisation of particle size fractions obtained by mechanical separation of animal slurry
Authors: Fangueiro, D.
Gusmão, M.
Grilo, J.
Porfirio, G.
Vasconcelos, E.
Cabral, F.
Keywords: animal slurry
mechanical separation
N mineralisation
Issue Date: 2010
Publisher: Elsevier
Citation: "Biosystems Engineering". ISSN 1537-5110. 106(2010) 333-337
Abstract: Mechanical slurry separation is a useful technology for slurry management on farms. The characteristics of the fractions obtained depend on the separation efficiency and on the characteristics of the original slurry. In the present work, three types of slurry e pig, cow and duck e were separated into 4 particle size fractions. The proportion, composition in terms of carbon and nutrients as nitrogen (N) phosphorus (P) and potassium (K) was evaluated. The potential of N mineralisation of whole slurries, and each fraction after soil application, was assessed. Results of the study showed that the characteristics of the slurry fractions obtained depend strongly on the slurry type considered, namely on its dry matter (DM) content. A positive value of PNM was observed with the 3 slurry types and 4 fractions considered, indicating that no N immobilisation occurred. Nevertheless, results showed that the value of PNM vary significantly (P < 0.05) with slurry types and slurry particle size fractions.
Description: Research Paper
Peer Reviewed: yes
URI: http://hdl.handle.net/10400.5/2689
ISSN: 1537-5110
Publisher version: www.elsevier.com/locate/issn/15375110
Appears in Collections:DQAA - Artigos de Revistas

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