This answer from the Koffiejongens make my day:
It's great to see that you're so conscious about waste disposal. Our coffee pods are 100% biodegradable and typically break down within two weeks after being disposed of with organic waste. The coffee itself is even a valuable ingredient for the compost produced from organic waste. The main reason some waste processors still prefer the pods to be disposed of with general waste is that they worry people may also throw other types of plastic into the organic waste bin. That's unfortunate, because our pods do meet the required standards. We hope this will change in the future! If you've got any other questiions, please let me know!