Introduced in partnership with the airport’s waste management partner Biffa, the two devices will be based on the first-floor area next to the e-gate entrance to the security hall and in the main area of the departure lounge for the next four weeks.

It is hoped the installations will help boost recycling by passengers and staff by providing a dedicated return point for cans and bottles. 

The machines, which can each accept 320 plastic bottles and 650 cans, have been brought in on a trial basis to coincide with Cop26.

Kirsty Webster, sustainability manager for the airport, said the introduction of the reverse vending machines "further complement" the work being done by the airport to reduce waste.

"One of the key aims of our strategy is to ban all unavoidable single-use products within the airport by 2022," she added.

"We’ve made great progress in this area already with the introduction of a number of water refill stations within the airport as well as pre-security sinks where passenger can empty their water bottles and carry them through security rather than just dispose of them."