Basking in the glow: recycling plastic with a little help from the sun
Researchers at the University of Adelaide are developing a solar-driven photoreforming process to convert plastic waste into hydrogen fuel and other chemicals. This method operates at near room temperature, offering a more energy-efficient alternative to traditional high-heat recycling techniques.
Why it matters
This innovation could simultaneously address the global plastic waste crisis and provide a sustainable, low-energy pathway for hydrogen fuel production.
Around the world, 460 million tonnes of plastic are produced every year, with Australians consuming more than our fair share: 147 kg per person, a figure that is projected to grow to 260 kg each by 2050 .
Engineers at the University of Adelaide, however, are eyeing this plastic waste as a source of feedstock to produce fuels – including zero-emission hydrogen.
Best of all, the process of transforming waste material into a valuable source of energy is facilitated by sunlight, taking place at close to room temperature.
“The reaction temperature is one of the major advantages of this process,” University of Adelaide PhD candidate Xiao Lu told create.
“Traditional recycling methods like pyrolysis that rely on thermal energy often operate at 500 to 800 degrees [Celsius], but photoreforming is thermodynamically favourable and mainly driven by light.
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