Zero Hazardous Waste?
I had a meeting earlier with a Sustainability Manager earlier this week who is busy drafting a Sustainability Strategy for his company. His waste goal was “zero non-hazardous waste” and I mused that in the last ten years such a once-impossible target has become pretty much standard – which is a brilliant achievement by the Sustainability community.
But what about hazardous waste? The main reason why this is caveated out of zero waste targets is the tight regulation around such material reduces the opportunities for action. In sectors such as healthcare where human tissue or blood is involved, there isn’t much room for manoeuvre, but for others my (blasphemous) alternative to the waste hierarchy still applies:
Design it out or find a good use for it.
The circular economy mindset sees the hazardous nature of a material as an opportunity rather than a problem. So if you have a highly alkaline ‘waste’ material, you need to investigate uses for alkalis, preferably those which result in pH neutral materials.
The design process offers exciting opportunities for innovation. In one of my favourite examples, Camira found that using a mixture of wool and bast fibres (e.g. sisal) led to a naturally flame retardant fabric, eliminating the need for hazardous chemicals and the resulting waste.
It will be interesting to see how this develops over the next decade – I expect to see ‘zero waste’ applying to all waste, not just the benign stuff. After all it was just a few years ago that people kept telling me that zero non-hazardous waste was physically impossible.