Title:
Effect of Co-Composting the Separated Solid Fraction of Pig Manure with Various Biomass Addendums on Fuel Characteristics
Author(s):
Kennealy, M., Lawlor, P.G., Carroll, J., Finnan, J., Owens, E.
Document(s):
Paper
Abstract:
The aim of this study was to assess the effect of co-composting the separated solid fraction of pig manure (SPM) with various biomass addendums on fuel characteristics. Three trials with various treatments were conducted – SPM only (repeated in all trials), SPM/sawdust (4:1), SPM/greenwaste (4:1), SPM/straw (13.5:1), SPM/woodchip (4:1), SPM/sawdust/woodchip (8:1:1), and SPM/sawdust (3:2) (ratios based on fresh weight). Treatments were composted in tumblers for 56 days. Ash content, gross calorific value (GCV) and metal analysis were used to assess the fuel characteristics of the composted manure derived biofuel. During composting, the inorganic fraction/ash content increased from day 0 and to increased to day 56 in Trial 1(P<0.001), Trial 2 (P<0.05) and to day 14 in Trial 3 (P<0.05). This was associated with a reduction in GCV in all three trials (P<0.001). Trial 3 consisted of varying the C/N ratio of the SPM using sawdust as a biomass addendum. Metal analysis was also conducted. Similarily to the ash, metals became more concentrated over time. Composting was found to have a negative effect on ash, GCV and metal concentration from a fuel characteristics viewpoint. Pellets were made using the 3:2 sample. Physical testing and emission of the pellets was also carried out.
Keywords:
biomass, manure, GCV, metal analysis, ashes
Topic:
Biomass Resources
Subtopic:
Biomass feedstock, residues and by-products
Event:
20th European Biomass Conference and Exhibition
Session:
1BO.11.2
Pages:
146 - 152
ISBN:
978-88-89407-54-7
Paper DOI:
10.5071/20thEUBCE2012-1BO.11.2
Price:
FREE
