Pittsburgh International Airport (PIT) has gone one step ahead in its sustainability initiative. The airport has partnered with local environmental firm Ecotone Renewables to add a new system that will transform uneaten food into fertilizer thus reducing waste. This move is the latest addition to airport’s ‘xBridge’ innovation campaign aimed towards making the airport environment friendly. The airport recently invested about $1.4 bn for terminal renovation. One unit of Ecotone’s system has been placed outside the airport’s landside terminal for intake of waste food. The composting system called ZEUS (Zero Emissions Upcycling System) is placed inside an 8 by 20-foot standard shipping

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