Tuesday, 29 September 2020

Leave it to Super-Enzyme!

Plastic-eating bacteria were discovered on a Japanese rubbish tip. The enzymes, that the bugs used to munch on plastics, have now been bioengineered so they can destroy this waste material six times faster (https://www.theguardian.com/environment/2020/sep/28/new-super-enzyme-eats-plastic-bottles-six-times-faster). It seems very likely that the super-enzyme can be utilised to efficiently recycle plastics rather than incinerating them or putting them in landfill. There are even plans to combine the enzyme with another that digests cotton. This would enable clothing, combining natural fibres and plastics to be recycled. Currently, such clothing is an impossible problem for recycling and has to be simply burn't (increasing the release of greenhouse gases) or dumped. It might even be a partial solution to 'fast fashion' (cheaply made clothing, often from 'sweat-shops', that is worn a few times before being discarded).

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