Cabin waste is made up of two main streams:
Cleaning waste is leftover rubbish from items given to passengers on the aircraft such as newspapers, paper towels, plastic bottles, food dropped on the floor, amenity kits and plastic wrapping from blankets, pillows and headsets. Cleaning waste also includes the contents of washroom bins and medical waste such as used syringes.
Catering (galley) waste
Catering waste comes from inflight meals, snacks and beverages served to passengers and can consist of leftover food, drinks and packaging which is placed back in the trolleys, in static or compactor bins. This waste can contain high volumes of liquid from unconsumed beverages and ice.
All cabin waste is subject to national waste management controls that limit pollution, but many countries have gone further with their regulations, introducing restrictions on catering waste from international flights to protect their agricultural sector (in respect to animal health). Airline meals are prepared using stringent hygiene and quality control standards,
originally designed for NASA astronauts, but the regulations often lead to the incineration of all cabin waste with limited ability to reuse and recycle.
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