Synergy between industry and agriculture: Techno-economic and life cycle assessments of waste recovery for crop growth in glasshouses

Lewis J. McDonald, Ariane S.S. Pinto, Muhammad Naveed Arshad, Rebecca L. Rowe, Iain Donnison, Marcelle McManus

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Controlled-environment agriculture in agro-industrial systems, where carbon dioxide, heat, and other wastes are recovered or recycled, has potential to be an environmentally friendly approach with economic feasibility. However, such approaches need careful exploration to ensure that environmental and economic benefits are maximised. Techno-economic, and life cycle assessments were applied to evaluate the synergy of producing crops (tomato and hemp) and recovering industrial wastes (e.g., heat and carbon dioxide) in glasshouses with robust uncertainty and sensitivity analyses. For each crop, two scenarios were compared, linear scenarios evaluated the use of raw materials with no waste recovery whereas circular scenarios captured industry flows and reused or recycled them in the glasshouse- avoiding raw materials consumption. Circular practices had a net benefit on the global warming potential for both crops, capturing up to 50,000 kg/y of CO 2 in crops biomass and providing competitive product prices. The analysis showed that circular operational conditions can reduce, by almost half, the break-even product selling prices and sequester up to, approximately, 500 kg CO 2eq./m 2 of glasshouse if compared to linear systems. Future investments in this outstanding strategy to supply the United Kingdom's market demand of tomatoes could lead to a low-cost product and negative CO 2eq. emissions by mitigating the importation of these products. Alongside, other impact categories scores may not be as favourable as the global warming potential, due to high impact of the waste management phase, chemical fertilisers, and pesticides utilisation.

Original languageEnglish
Article number139650
JournalJournal of Cleaner Production
Volume432
Early online date24 Nov 2023
DOIs
Publication statusPublished - 20 Dec 2023

Keywords

  • CCUS
  • Circular economy
  • Greenhouse crop cultivation
  • Industrial wastes
  • Techno-economic-environmental analysis

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