Aarhus Study Upcycles Polystyrene Into CO2-Capture Material as U.S. Recycles Less Than 1%
Updated
Updated · Ars Technica · Jun 8
Aarhus Study Upcycles Polystyrene Into CO2-Capture Material as U.S. Recycles Less Than 1%
1 articles · Updated · Ars Technica · Jun 8
Summary
Discarded polystyrene was converted into part of a solid carbon-capture material in a new Aarhus University study led by Ruth Ebenbauer, aiming to tackle plastic waste and CO2 emissions with one process.
Two chemical steps drive the upcycling: gold-catalyzed bromination first modifies the polymer, then a copper-catalyzed reaction replaces those sites with a two-carbon amine that can bind CO2.
Solid amine materials are already used in carbon-capture systems because they need less energy than older water-based amine scrubbers and can repeatedly absorb and release CO2.
Polystyrene is a notable target because recycling rates remain extremely low—under 1% in the U.S. and about 10% in Europe—while current capture materials are still derived from fossil fuels.
With a trillion tons of CO2 to remove, can this lab-scale breakthrough make a real-world dent?
Does this climate fix for plastic waste create a new excuse to keep producing it?
Can a recycling method using precious metals like gold ever be truly sustainable and scalable?
Turning Plastic Waste into Climate Solutions: Aarhus University’s Breakthrough Upcycling of Polystyrene and PET for CO2 Capture
Overview
Aarhus University has developed an innovative method that transforms plastic waste, such as polystyrene and PET, into advanced materials designed to capture carbon dioxide. This breakthrough, supported by the Novo Nordisk Foundation and achieved through collaboration at several university centers, directly addresses both plastic pollution and climate change. The process uses catalytic upcycling to convert difficult-to-recycle plastics into valuable CO2 capture agents, offering a dual solution to two major environmental challenges. Led by a dedicated research team, this approach paves the way for a more sustainable and circular economy by turning waste into a resource for climate mitigation.