The influence of the pig manure separation system on the energy production potentials

R. Wnetrzak, W. Kwapinski, Karin Peters, Sven G. Sommer, Lars Stoumann Jensen, J.J. Leahy

29 Citations (Scopus)

Abstract

Energy recovery from pig manure offers an opportunity for waste utilisation and financial benefit. Samples of the solid fraction of separated pig manure and samples which had undergone chemical or biological pretreatment prior to separation were pyrolysed. A beech wood sample was pyrolysed for comparison. The chemically pre-treated and anaerobically digested materials had similar properties and showed similar behaviour during thermogravimetric analysis. However, the energy content of the gas arising from pyrolysis in a batch reactor at 600. °C comprises about 30% of the original energy of the feedstock in the case of the anaerobically digested materials and double that of the chemically pre-treated material. Therefore, the overall energy balance showed a loss of 595.9. MJ/t for the pyrolysis of the chemically pre-treated manure, while very small positive values of 351.7. MJ/t, 817.3. MJ/t and a significant value of 8935. MJ/t were found for anaerobically digested sample, un-pretreated solid and for wood, respectively.

Original languageEnglish
JournalBioresource Technology
Volume136
Pages (from-to)502-508
Number of pages7
ISSN0960-8524
DOIs
Publication statusPublished - May 2013

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