Plastic is a ubiquitous part of our everyday lives, and its global production is expected to more than triple between now and 2050. According to industry projections, we will create more plastics in the next 25 years than have been produced in the history of the world so far.
The building and construction industry is the second largest use sector for plastics after packaging.1 From water infrastructure to roofing membranes, carpet tiles to resilient flooring, and insulation to interior paints, plastics are ubiquitous in the built environment.
These plastic materials are made from oil and gas. And, due to energy efficiency improvements, for example, in building operations and transportation, the production and use of plastics is predicted to soon be the largest driver of world oil demand.2
Plastic building products are often marketed in ways that give the illusion of progress toward an ill-defined future state of plastics sustainability. For the past 20 years, much of that marketing has focused on recycling. But for a variety of reasons, these programs have failed.
A recent study from the University of Michigan makes it clear that the scale of post-consumer plastics recycling in the US is dismal.3 Only about 8% of plastic is recycled, and virtually all of that is beverage containers. Further, most of the recyclate is downcycled into products of lower quality and value that themselves are not recyclable. For plastic building materials, the numbers are more dismal still. For example, carpet, which claims to have one of the more advanced recycling programs, is recycled at only a 5% rate, and only 0.45% of discarded carpet is recycled into new carpet. The rest is downcycled into other materials, which means their next go-around these materials are destined to be landfilled or burned.4 After 20 years of recycling hype, post-consumer recycling of plastic building materials into products of greater or equal value is essentially non-existent, and therefore incompatible with a circular economy.
Why isn’t plastic from building materials recycled?
Additives (which may be toxic), fillers, adhesives used in installation, and products made with multiple layers of different types of materials all make recycling of plastic building materials technically difficult. Lack of infrastructure to collect, sort, and recycle these materials contributes to the challenge of recycling building materials into high-value, safe new materials.
Manufacturers have continued to invest in products that are technically challenging to reuse or recycle – initially cheaper due to existing infrastructure – instead of innovating in new, circular-focused solutions. Additionally, their investment in plastics recycling has been paltry. In 2019 BASF, Dow, ExxonMobill, Shell and numerous other manufacturers formed the Alliance to End Plastic Waste (AEPW) and pledged to invest $1.5 billion over the next five years into research and development of plastic waste management technologies. Compare that to the over $180 billion invested by these same firms in new plastic manufacturing facilities since 2010.5
Globally, regulations that discourage or ban landfilling of plastics have, unfortunately, not led to more recycling overall. Instead, burning takes the place of landfilling as the eventual end of life for most plastics.
Confusing rhetoric around plastic end of life options can make this story seem more complicated than it is.6
- “incineration” or “waste to energy” burns plastic for energy.
- “Plastic-to-fuel” or “gasification” or “pyrolysis” generates fuel. This output is rarely used for anything but burning due to the additional processing required to use for any other purpose.
- “Chemical recycling” could, in theory, lead to new plastic products. This technology is unproven and currently not a scalable solution. The outputs are often burned due to low quality.
Plastic waste burning, regardless of the euphemism employed, is a well established environmental health and justice concern.
Burning plastics creates global pollution and has environmental justice impacts.
In its exhaustive 2019 report, the independent, nonprofit Center for International Environmental Law (CEIL) documents how burning plastic wastes increases unhealthy toxic exposures at every stage of the process. Increased truck traffic elevates air pollution, as do the emissions from the burner itself. Burned plastic produces toxic ash and residue at approximately one fifth the volume of the original waste, creating new disposal challenges and new vectors of exposure to additional communities that receive these wastes.7
In the US, eight out of every 10 solid waste incinerators are located in low-income neighborhoods and/or communities of color.8 This means, in some cases, the same communities that are disproportionately burdened with the pollution and toxic chemical releases related to the manufacture of virgin plastics are again burdened with its carbon and chemical releases when it is inevitably burned at the end of its life.
The issue is global in scale. A recent report by the United Nations Environment Program (UNEP) found that “plastic waste incineration has resulted in disproportionately dangerous impacts in Global South countries and communities.” The Global Alliance for Incineration Alternatives (GAIA), a worldwide alliance of more than 800 groups in over 90 countries, has been working for more than 20 years to defeat efforts to massively expand incineration, especially in the Global South. GAIA members have identified incineration not only as an immediate and significant health threat in their communities, but also a major obstacle to resource conservation, sustainable economic development, and environmental justice.
Where do we go from here?
- Minimize production of virgin plastic. This should be the main focus of any plastic waste reduction plan and part of any comprehensive climate change initiative. Policies banning single use plastics or banning the construction of new plastic production facilities or facility expansions are two example solutions cited by GAIA.9 Less plastic means less waste and less material to incinerate.
- Invest in true circular economy initiatives. These may include, for example: extended producer responsibility programs, materials passports, materials disclosure, elimination of toxic chemical additives, product as a service models, and recycling facilities that support upcycling. By shifting industry investments toward circular economy infrastructure – instead of the nearly $200 billion investments in increased manufacturing and burning capacity – the plastic industry could start to be part of the solution of reducing plastic waste.
- When evaluating the “expense” of recycling and circularity vs business-as-usual, a fair calculation for the latter needs to include all costs associated with the production, use, and end of life impacts of plastics. That “cheap” vinyl floor is no longer so inexpensive when the full costs of global pollution and the health burdens of people of color and low income communities are included in the math. Externalities must be a part of the equation.
What is unquestionable is this: Today our only choices for plastic waste are to burn or landfill most of it. Expanding plastics production and incineration is a conscious decision to perpetuate well documented, fully understood inequity and injustice in our building products supply chain.
The folks at The Story of Stuff cover this in The Story of Plastics, a newly released, four minute animated short suitable for the whole family. Comedian John Oliver tells the “R-rated” version of the story with impeccable research and insightful humor in a recent installment of his HBO show Last Week Tonight. It’s worth a look to learn exactly how the plastics industry uses the illusion of recycling to sell ever increasing volumes of plastic. Without manufacturer responsibility and investment, efforts to truly incorporate plastic into a circular economy have little chance of success.