The Horse 2021/22

Environment & Technology

Task 11 - Which is more sustainable Plastic bottles or glass bottles?

The comparison between plastic and glass bottles

Plastic bottles have the edge in transport thanks to their lighter weight. However, glass bottles can be refilled more often than plastic bottles. So both are in a neck-and-neck race here. Green glass bottles are particularly environmentally friendly because they consist of up to 90 per cent recycled material. With white glass, the figure is only 60 per cent. The PET bottle comes off worst in terms of recycling, with 30 per cent recycled per bottle. However, there is still eco-potential here: the recycling share could be increased to up to 50 per cent.

The stumbling block in the eco-balance of the glass bottle is its production: the energy required to melt glass is very high, but the bottle can be reused up to fifty times. The PET bottle requires less energy to produce, but can only be refilled 25 times.

By the way: If a bottle breaks, it should still be returned. The material can still be recycled.

In the end, the difference between glass and plastic is hardly worth mentioning! The important thing is: the main thing is reusable!

Soumaya Khreiss

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