But there are a couple of challenges with this course of that I see so much in recycling methods. First, reaching a big industrial scale can be tough—as one researcher that Sarah spoke to identified, the solvent utilized in the course of is pricey and hard to recuperate after it’s used.
Recycling methods additionally usually wind up degrading the product not directly, a difficult problem to resolve. This is a serious disadvantage to conventional mechanical recycling as nicely—usually, recycled plastic isn’t fairly as robust or sturdy as the recent stuff. In the case of this research, the problem isn’t really with the plastic, however with the different supplies that researchers try to protect.
The starting of the textile recycling course of entails shredding the clothes into high-quality items to permit the chemical compounds to seep in and do their work breaking down the plastic. That chops up the cotton fibers too, rendering them too quick to be spun into new yarn. So as an alternative of a new T-shirt, the cotton from this course of may be damaged down and used as one thing else, like biofuel.
There’s potential for future enchancment—the researchers tried to alter up their methodology to disassemble the materials in a method that may protect longer cotton fibers, however the reported analysis suggests it doesn’t work nicely with the chemical course of to date.
This story obtained me fascinated by a latest function from ProPublica, the place Lisa Song took a take a look at the actuality of business superior recycling right now. She targeted on pyrolysis, which makes use of warmth to interrupt down plastic into its constructing blocks. As she outlines in the story, whereas the business pitches these new methods as an answer to our plastics disaster, the actuality of the expertise right now is way from the ultimate we think about.
Most new recycling methods are nonetheless in improvement, and it’s actually tough to recuperate helpful supplies at excessive charges in a method that makes it potential to make use of them once more. Doing all that at a scale giant sufficient to even make a dent in our plastics problem is a large problem.
Just one thing to remember the subsequent time you see these little arrows.
Related studying
Read Sarah’s full story on efforts to recycle combined textiles right here.
