Optimising sustainability: Circular pathways for Scotch Whisky distillery co-products

Colm Duffy, David Styles, Isabel Schestak, Kenneth Macgregor, Frances Jack, Daniel Henn, Kirsty Black, Pietro P.M. Iannetta

Research output: Contribution to journalArticlepeer-review

Abstract

The use of co-products for animal feed can potentially have a higher greenhouse gas (GHG) emission and water scarcity offset compared to bio-energy (bio-electricity/fuel) production. We cluster 136 Scotch Whisky distilleries and evaluate the co-product pathways for the production of animal-feed and/or bio-energy at centralised processing facilities. Production of animal feed, and the subsequent displacement of imported animal feed, offered the most significant GHG offset, which was between a factor of c.a. 2.5 to 8 times greater than the bio-electricity/fuel and bio-energy/feed scenarios. This offers significant potential from a global net-zero carbon emissions perspective. However, this comes at a cost to local energy security potential. Bio-electricity produced in the electricity intensive scenarios was 481 GWh per year. This would significantly increase Scotland's bio-energy production and equates to c.a. 5% of Scotland's non-commercial electricity needs.

Original languageEnglish
Article number136436
JournalJournal of Cleaner Production
Volume395
DOIs
Publication statusPublished - 1 Apr 2023

Keywords

  • Anaerobic digestion
  • Circular economy
  • Climate change
  • Consequential LCA

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