The management of plastic waste continues to be one of the planet’s greatest environmental challenges. Disposable packaging, multi-layer wrappers, and polymer mixtures often end up in landfills or incinerators, causing serious impacts on ecosystems. However, a group of South Korean researchers has developed a technology capable of transforming plastics mixed into high-purity raw materials, without the need for prior sorting.
The advancement is based on a chemical recycling system that uses hydrogen plasma to break down waste in seconds and produce valuable compounds such as ethylene and benzene. Unlike traditional methods, this process is selective, fast, and with a yield of over 70%, making it a viable alternative to give a second life to low-quality plastics.
Currently, a large portion of post-consumer plastics cannot be mechanically recycled due to their complexity. With this innovation, even those more problematic wastes could be turned into useful resources for the industry, marking a turning point in the fight against plastic pollution.
The initiative, developed at the Korean Institute of Machinery and Materials (KIMM), has already shown successful results in pilot tests and opens the door to its implementation on a large scale in urban and industrial environments.
South Korea has introduced a new method of recycling for mixed plastic. Photo: Ecoinventos.[/caption>
An innovative technology
One of the key features of the new Korean technology is its speed. While traditional pyrolysis requires temperatures between 450 and 600 °C to produce less useful compound mixtures, hydrogen plasma reaches between 1,000 and 2,000 °C, breaking down the materials in less than 0.01 seconds. The result is a cleaner, more efficient process without residual carbon generation.
In the conducted tests, conversion levels exceeding 80% were achieved even with oily waste, which is usually not recycled. Furthermore, by avoiding the formation of solid deposits, the equipment’s lifespan is extended, reducing operational costs.
This type of chemical recycling could be integrated with renewable energies, ensuring a process virtually free of emissions. If adopted on a large scale, it would help transform plastic waste into a valuable resource, while also contributing to mitigating climate change.
Recycling in South Korea
Beyond its application in plastic treatment, the developments stemming from the project have potential in other industries, such as semiconductor and display manufacturing, where handling polluting gases poses a challenge. This further expands the scope of innovation and its ability to impact strategic sectors.
Currently, less than 1% of plastics in South Korea are chemically recycled. The implementation of this technology promises to multiply that figure and serve as a model for other countries facing the same issue. The challenge now is to scale its use, integrate it into waste management systems, and promote partnerships between governments, industry, and society.
Chemical recycling through hydrogen plasma not only represents a technical solution, but an opportunity to rethink the relationship with waste. Turning what is currently garbage into clean and valuable raw materials can become one of the pillars of sustainability in the 21st century.
South Korea has introduced a new method of recycling for mixed plastic. Photo: Ecoinventos.[/caption>
The benefits of recycling for the environment
Recycling, in any of its forms, is one of the most effective tools to reduce human pressure on the planet. In the case of plastics, proper management prevents tons of waste from reaching rivers, seas, and soils, where they would take centuries to degrade and harm fauna. Each recycled container means fewer microplastics in the oceans and fewer emissions associated with the production of virgin materials.
Furthermore, recycling helps reduce the dependency on fossil resources such as oil and gas, from which plastic polymers are extracted. By turning waste into new raw materials, the need for exploiting natural resources is reduced, promoting a more efficient circular economy model.
In social and economic terms, recycling also offers benefits. Creating new value chains around plastic waste drives green jobs, fosters technological innovation, and allows countries to advance their climate commitments. Adopting advanced systems, such as chemical recycling with hydrogen plasma, strengthens this potential by adding a sustainable and scalable alternative.
