New Tech Can Convert Plastic Trash Into Petrol and Gas Using Sunlight

Researchers have developed a solar-powered approach that can convert plastic waste into fuel similar to petrol and other chemicals. This is a completely new way to curb plastic pollution by converting it into clean energy.

The study was led by University of Adelaide PhD researcher Xiao Lu. The team followed a process that uses sunlight to transform discarded plastics into hydrogen, syngas, and other valuable chemical products.

The findings were published online as well.

The research shows that highly toxic and carbon-rich plastics can be treated as a chemical resource rather than waste.

The technique is called solar-driven photoreforming that uses photocatalysts (light-activated materials) to break down plastic waste at relatively low temperatures.

This process can produce a climate-friendly hydrogen fuel along with acetic acid and hydrocarbons that can be used in industrial applications.

Compared with traditional hydrogen production methods like water splitting, the process requires less energy because plastics are easier to oxidize.

According to senior researcher Professor Xiaoguang Duan, some experimental systems have already achieved continuous operation for over 100 hours while producing hydrogen and other chemical by-products.

Researchers say several challenges remain before large-scale application is possible.

One major issue is how complicated plastic wastes can be.

Different types of plastics, along with additives such as dyes and stabilizers, can disrupt the conversion process. This makes sorting and pre-treatment essential mandatory.

Another challenge is catalyst durability. Photocatalysts must remain stable under chemical stress while maintaining high selectivity and performance over time.

Researchers also determined that separating final products remains complex, as the process generates mixed gases and liquids that require additional purification.

To move toward practical deployment, scientists suggest integrating improvements in catalyst design, reactor engineering, and system efficiency.

Researchers say further development could improve efficiency and enable continuous industrial-scale operation.

The study concludes that solar-based plastic-to-fuel technologies remain at an early stage but could contribute to future low-carbon energy systems with more research and proper/dedicated funding.