Title

Economic analyses of pig manure treatment options in Ireland

RIS ID

111018

Publication Details

Nolan, T., Troy, S. M., Gilkinson, S., Frost, P., Xie, S., Zhan, X., Harrington, C., Healy, M. G. & Lawlor, P. G. (2012). Economic analyses of pig manure treatment options in Ireland. Bioresource Technology, 105 15-23.

Abstract

An economic analysis was performed on treatment options for pig manure in Ireland. Costs were based on a 500sow integrated pig farm producing 10,500m3 of manure per year at 4.8% dry matter. The anaerobic digestion of pig manure and grass silage (1:1; volatile solids basis) was unviable under the proposed tariffs, with costs at € 5.2m-3 manure. Subsequent solid-liquid separation of the digestate would cost an additional € 12.8m-3 manure. The treatment of the separated solid fraction by composting and of the liquid fraction by integrated constructed wetlands, would add € 2.8 and € 4.6m-3 manure, respectively to the treatment costs. The cost analysis presented showed that the technologies investigated are currently not cost effective in Ireland. Transport and spreading of raw manure, at € 4.9m-3 manure (15 km maximum distance from farm) is the most cost effective option.

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Link to publisher version (DOI)

http://dx.doi.org/10.1016/j.biortech.2011.11.043