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A waste company in the Netherlands, Meerlanden, is using old bread from a large hotel chain as input in their anaerobic digester.
BroodNodig is a Rotterdam-based company that sets up bread bins across the city. Citizens can put in old, no longer edible bread so that it can be recycled.
This research paper outlines the various possibilities for the reuse of leftover bread.
Gryaab is a wastewater treatment plant that processes the sludge via digestion to produce biogas. To increase the production of biogas Gryaab takes grease and food waste from restaurants, schools a
Most of the waste coffee grounds are disposed of via landfill where they emit methane, a greenhouse gas that is 28 times more potent than carbon dioxide.