High energy prices have led to warnings of a global fertiliser shortages, causing widespread concerns over farming crises and potential food shortages. By transitioning to anaerobic digestion (AD) and biogas, both energy and food security need could be addressed, according to the World Biogas Association (WBA).
The recovery of ammonia released during AD could help mitigate the ongoing fertiliser crisis. With ammonia a key component of fertiliser, capturing could help realise a circular economy within the industry.
“For every kg of nitrogen lost to the atmosphere is the loss of a resource which traditionally is something like €1 or £1 per kg of nitrogen,” said Professor Mark Sutton, UK Centre for Ecology & Hydrology.
“Currently with the fertiliser crisis we’re talking something like €3 per kg of nitrogen, this is really valuable stuff to recover.”
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