L3/\\0T schreef op 15 oktober 2021 19:59:
" These green claims do not always stand up to scrutiny, said Sarah Kakadellis, a researcher in plastic pollution at Imperial College London. If the raw material is not sourced sustainably, bioplastics could end up increasing deforestation to clear land and competing with food production. They also do not always break down as easily as advertised – sometimes taking years – and others require industrial composting facilities, which can be scarce.
Some companies say they have cracked these problems. The Dutch biochemicals company Avantium, which has partnered with brands such as Carlsberg, has developed a 100% plant-based plastic made from sugars that can be used for bottles and films. The company says its plastic is 100%-recyclable, has a significantly lower carbon footprint than fossil-based plastics and is sourced from sustainably grown plants.
If this plastic falls out of the recycling stream, trials have shown that it takes about a year to decompose in an industrial composter. Left in the environment, the plastic starts to degrade after a year, according to initial results from a long-term study with the University of Amsterdam.
Avantium plans to open its first plant in 2023 in the Netherlands and predicts its packaging will be in supermarkets in three years’ time. "www.theguardian.com/environment/2021/...