In the hunt for an eco-friendly, cost-effective alternative to plastic bottles, could aluminum cans be the answer?
Plastic pollution is a global problem. The statistics are alarming – and emotive. The WWF reports that 8 million tonnes of plastic are dumped in our oceans every year and 90% of seabirds have plastic in their stomachs.
Aluminium is extracted and refined from mined bauxite ore. It’s complicated, costly and energy-intensive. We calculate that it takes an average of 14,000 kWh of electricity to produce one tonne of aluminium. Life cycle assessment studies from the Aluminum Association indicate that the total primary demand for aluminium production is 138 GJ/tonne.
Demand for recycled PET is growing. The EU directive includes a target to incorporate 25% of recycled content in all PET beverage bottles from 2025, increasing to 30% from 2030. Leading brands such as Coca-Cola, Danone and PepsiCo have all called for a 50% use of RPET in their bottles by 2030. We forecast a six-fold increase in demand for RPET in Europe by 2030 as a result.Aluminium recycling is a true closed loop.
The polyester for PET is around US$1,000-1,200 per tonne. A PET water bottle weighs about 8-10g and holds 500ml. However, as carbonated drinks need a stronger bottle the average weight will be around 22-25g for 500ml.
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