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Methane production from anaerobic co-digestion of the separated solid fraction of pig manure with dried grass silage

Overview of attention for article published in Bioresource Technology, November 2011
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Title
Methane production from anaerobic co-digestion of the separated solid fraction of pig manure with dried grass silage
Published in
Bioresource Technology, November 2011
DOI 10.1016/j.biortech.2011.11.076
Pubmed ID
Authors

S. Xie, G. Wu, P.G. Lawlor, J.P. Frost, X. Zhan

Abstract

Anaerobic co-digestion of the solid fraction of separated pig manure (SPM) with dried grass silage (DGS) was evaluated in three identical continuously stirred tank reactors (CSTRs) at 35±1 °C. The feedstock contained 20% DGS in CSTR1, 30% DGS in CSTR2 and 40% DGS in CSTR3 on a volatile solids (VS) basis. Organic loading rates (OLR) of 1.0, 1.5, 2.0 and 3.0 kg VS/m(3)/d were studied and it was found that the OLR affected the digester performance more than the DGS proportion in the feedstock. Tripling the OLR increased volumetric methane yields by 88% and decreased specific methane yields by 38%. At the OLR of 3 kg VS/m(3)/d, post-methane production potentials of digestates ranged from 38% to 41% of total methane production potentials of the feedstock. An energy yield estimation on a 654-sow pig unit showed that 268-371 MWh/a electricity and 383-530 MWh/a heat would be generated.

Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 111 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Peru 1 <1%
Brazil 1 <1%
Unknown 109 98%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 24 22%
Student > Master 23 21%
Student > Bachelor 14 13%
Student > Doctoral Student 11 10%
Researcher 11 10%
Other 11 10%
Unknown 17 15%
Readers by discipline Count As %
Engineering 31 28%
Environmental Science 23 21%
Agricultural and Biological Sciences 12 11%
Chemistry 6 5%
Chemical Engineering 5 5%
Other 10 9%
Unknown 24 22%