Food waste is collected in the green bins in offices and kitchens across the campus. We produce about 1000L of food waste every week. This is waste from the offices and kitchens and does not include canteen waste.


What can you put in the food waste bins?

All food waste items can be put in the food waste bins, including:

  • Fruit
  • Vegetables
  • Trimmings
  • Sandwiches
  • Meat (raw or cooked)
  • Fish (raw or cooked)
  • Diary
  • Tea bags /coffee
  • Chocolate (but why would you!)Compost collection

Please don't put liquids in the bins - they can cause a real mess when the cleaning team empty the bins!

What happens to the food waste?

The food waste is collected by a contractor and taken to a local anaerobic digestion facility. When the waste arrives at there facility the plastic bags we put the food waste in are mechanically removed from the material and this small amount of plastic waste is then sent on for recycling. The food waste is then transferred to large air free digestion tanks where the natural biological process of anaerobic digestion (AD) takes place. Millions of bacteria ‘feed’ on the food waste and as they are doing this they produce a methane rich ‘biogas’. The biogas can then be used for heating and to produce electricity.