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The Potential for Hydrolysed Sheep Wool as a Sustainable Source of Fertiliser for Irish Agriculture

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  • Gary D. Gillespie

    (Crop Sciences, School of Agriculture and Food Science, University College Dublin, Belfield, D04 V1W8 Dublin, Ireland
    Biosystems Engineering Ltd., NovaUCD, Belfield, D04 V1W8 Dublin, Ireland)

  • Oyinlola Dada

    (School of Chemistry, University College Dublin, Belfield, D04 V1W8 Dublin, Ireland)

  • Kevin P. McDonnell

    (Crop Sciences, School of Agriculture and Food Science, University College Dublin, Belfield, D04 V1W8 Dublin, Ireland
    Biosystems Engineering Ltd., NovaUCD, Belfield, D04 V1W8 Dublin, Ireland)

Abstract

Suppressed wool prices in Ireland over the last number of years has led to situations where the cost of shearing animals is greater than the wools’ value, leading to net losses per animal for farmers. Populations of sheep in Ireland and nutrient values of wool from literature sources were used to determine the quantity of nutrients that could be produced on an annual basis using hydrolysis techniques. Results of this study suggest that up to 15.8% of the nitrogen required to produce Ireland’s cereal crops can be met annually using hydrolysed sheep wool in an economically feasible manner along with considerable amounts of sulphur, zinc, and copper. Most of the cost associated with the process is the purchasing of wool from farmers at an economically favourable level for farmers. Based on the spatial distribution of these animals, the town of Athlone is the most suitable location for a processing facility.

Suggested Citation

  • Gary D. Gillespie & Oyinlola Dada & Kevin P. McDonnell, 2021. "The Potential for Hydrolysed Sheep Wool as a Sustainable Source of Fertiliser for Irish Agriculture," Sustainability, MDPI, vol. 14(1), pages 1-12, December.
    • Handle: RePEc:gam:jsusta:v:14:y:2021:i:1:p:365-:d:714269
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    References listed on IDEAS

    as
    1. Corscadden, K.W. & Biggs, J.N. & Stiles, D.K., 2014. "Sheep's wool insulation: A sustainable alternative use for a renewable resource?," Resources, Conservation & Recycling, Elsevier, vol. 86(C), pages 9-15.
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