The Biggest Challenges Facing Plastic Circularity — and How the Industry Is Responding

The Scale of the Problem Is Still Growing

The Pew Charitable Trusts’ Breaking the Plastic Wave 2025 report estimated that 130 million metric tons of plastic pollutes the environment every year. Without ambitious global action, that figure will rise to 280 million metric tons by 2040, which is the equivalent of dumping nearly a garbage truck’s worth of plastic waste every second. Meanwhile, plastic production is projected to rise 52% by 2040, growing twice as fast as waste management capacity even with considerable investment.

There’s a missing link between production and management. Plastic keeps entering the system faster than the infrastructure exists to recover it. That’s the challenge that every technology, policy, and collaborative effort is ultimately trying to solve.

The Infrastructure Isn’t There Yet

Recycling rates for plastics remain stubbornly low across most markets. The U.S. Department of Energy’s cross-sector workshop on plastic circularity identified infrastructure as one of the most pressing gaps, noting that inconsistent policies create complexity for investment and alignment. The current variety of materials, product designs, and recycling infrastructure limits the ability to recycle safely and economically.

The challenge is also geographic. In developed markets, recyclable waste is typically collected and sorted with industrial equipment. In many developing economies, that infrastructure doesn’t exist at comparable scale, and informal waste pickers fill the void, often without the safety equipment, fair compensation, or systemic integration that would make their work sustainable long-term.

The United Nations Industrial Development Organization (UNIDO) approach to plastic circularity recognizes this explicitly, emphasizing that the transition to a circular economy requires transformative changes in policy, industry practices, and consumer behavior, and that redesigning entire value chains is necessary to retain the value of plastics within the economy rather than allowing it to leak out as waste.

Material Complexity Makes Sorting a Technical Challenge

Even where infrastructure exists, plastic packaging is rarely simple, which creates sorting challenges. Packaging often combines multiple plastic types, adhesives, foils, and paper layers that can’t be separated mechanically.

The DOE workshop identified improved sortation as a key leverage point, noting that expanded feedstock quality and quantity require increasing recycling access, engaging consumers, expanding infrastructure, and exploring novel collection solutions. Improved sortation would benefit both mechanical and advanced recycling by better matching feedstocks with recycling technologies. Packaging designed for the recycling stream that actually exists performs far better than packaging designed without that downstream reality in mind.

The Economics Can Work Against Progress

The economics of plastic recycling add another layer of difficulty. When virgin plastic prices fall (as they do when oil prices drop), recycled material becomes comparatively expensive, and the financial case for investing in high-quality, closed-loop feedstock weakens.

This is one of the reasons that policy mechanisms matter so much. Extended Producer Responsibility (EPR) laws and recycled-content mandates create stable demand that doesn’t fluctuate with commodity markets. California’s Plastic Pollution Prevention and Packaging Producer Responsibility Act, Oregon’s EPR framework with its built-in eco-modulation incentives, and the EU’s Packaging and Packaging Waste Regulation are all creating financial structures that reward packaging designed for recovery and penalize packaging that undermines it.

Technology Is Tackling Circularity Challenges

Technology is key to driving circularity. Advanced sorting using near-infrared sensors can identify the chemical composition of a plastic by its molecular fingerprint, enabling separation by material type rather than color or appearance. AI-assisted sorting systems are improving throughput and accuracy significantly over traditional methods.

For materials that mechanical recycling can’t reach, such as multi-layer films, composite packaging, and food-contaminated plastics, chemical recycling offers a solution. Depolymerization and pyrolysis break plastic down to a molecular level, turning mixed or degraded feedstocks into usable material that can re-enter production. This is particularly significant for food-contact packaging, where safety standards make mechanically recycled content difficult to use.

One emerging tool that supports accountability in complex supply chains is mass balance. Mass balance is a chain of custody methodology that helps track materials through a supply chain when different types of raw materials, like circular or bio-based materials and traditional fossil-fuel-based inputs, are mixed together. As chemical recycling scales, mass balance provides a credible framework for producers to account for recycled content even when physical separation of material streams isn’t possible.

The Power of Cross-sector Collaboration

Perhaps the most consistent message from the DOE’s cross-sector stakeholder workshop was that circularity can’t be achieved by any single actor. Advancing technologies from small-scale demonstration through pilot scale and market implementation can be accelerated by partnerships between stakeholders across industry, academia, and government. The alignment of industry coalitions and pre-competitive collaborations around product design and systems development will facilitate the acceleration of innovations at scale.

ALPLA’s closed-loop recycling project in Thailand is an example of how collaboration can solve longstanding challenges. Launched in October 2024 in partnership with recycler ENVICCO and local brand customers, the project creates a fully operational loop for HDPE bottles. They’re collected, processed into post-consumer recyclate, and used to manufacture new packaging that re-enters the market.

The Problems Are Solvable

Annual plastic pollution can be cut by 83% by 2040, but only with a total system transformation across the value chain. That figure comes from the Pew report referenced earlier in this article. To achieve the 83% reduction goal, investment, collaboration, and policy all must come together.

Infrastructure will be built, sorting technology will advance, and regulation will create the conditions where circular choices are also financially rational ones. The road ahead is complex, but that’s precisely the reason why the work is important.