The answer is that it’s actually not so easy: coffee capsules are hard to recycle because you need to separate the plastic/aluminum from the coffee before recycling them. Only a handful of recycling facilities can handle them, so they will for the vast majority of them end up in landfills. So while Keurig, one of the main coffee capsule brands, boasts that its capsules are "recyclable", in reality they are almost never recycled. "...telling people something is recyclable when it’s not accepted in the recycling program is just making the (contamination) problem worse right now” says Jim McKay, Toronto’s city official in charge of recycling.
Fully aware of this problem, the leader of the market Nespresso® decided to start a recycling program to improve their image. The only issue... Is that only 20% of their capsules get recycled this way. And more importantly: the aluminum alloy required to produce their single-use capsules cannot be made from recycled capsules. In short, every single aluminum capsule ever produced will have to be produced from non-recycled aluminum.
Here is the hard TRUTH: Your coffee capsules DO NOT get recycled.
Most of it gets shipped to poor countries and ends up in landfills or the ocean!
Last year, 80 billion throw-away coffee capsules were sold.
The extent of the ecological catastrophe is such that on 25th November 2022 the European Union decided to start a draft regulation to ban single-use coffee capsules.
Studies have found traces of bisphenol A, bisphenol B, and Furan present in single-use coffee capsules.