Burning plastic waste releases toxic gases including dioxins and furans, as well as CO2 emissions, making plastic incineration one of the hidden drivers of the climate crisis. When plastic burns, it does not disappear — it transforms into airborne poisons that settle in the lungs, soil, and bloodstreams of the communities living closest to the smoke.
People living near incinerators have a right to know what they are breathing. This explainer delves into what is released when plastic is burned in incinerators (sometimes called “waste-to-energy”), why it worsens the climate crisis, and who is statistically most impacted by these facilities.
Plastic incineration is the burning of plastic waste — whether in an open pit, a backyard barrel, or a large incineration or “waste-to-energy” facility — to dispose of it and/or generate energy. While often marketed as a solution to the plastic crisis, it is anything but.
What toxic gases does burning plastic waste release?
Burning plastic releases a cocktail of hazardous compounds. According to GAIA’s research in The Hidden Climate Polluter: Plastic Incineration, these emissions include some of the most dangerous pollutants known to science.
The primary toxic gases and pollutants released when plastic is burned include:
- Dioxins and furans — persistent organic pollutants that build up in the food chain and are linked to cancer and reproductive harm.
- Particulate matter — microscopic particles that lodge deep in the lungs and enter the bloodstream.
- Hydrogen chloride — a corrosive acidic gas produced when PVC and chlorinated plastics burn.
- Heavy metals and volatile organic compounds — released due to plastics’ additives, dyes, and stabilizers.
Dioxins and furans are among the most toxic chemicals ever studied — they persist in the environment for decades and accumulate in living tissue.
These are not trace emissions. They are the predictable byproducts of setting synthetic, fossil-fuel-derived materials on fire.
Why plastic burns dirty
Plastic is made from fossil fuels. When you burn plastic, you are burning oil and gas in one of the most polluting ways possible. The additives that make plastic flexible, colorful, and durable become airborne toxins the moment they combust.
Why plastic incineration is a hidden climate polluter
Plastic incineration is a climate problem, not just an air quality problem. Because plastic is fossil-based, burning it converts stored carbon directly into carbon dioxide — while releasing the toxic gases named above.
Waste-to-energy incineration is frequently sold as a clean way to handle waste. GAIA’s research documents that these facilities contribute to greenhouse gas emissions and toxic air pollution rather than reducing them. The “energy” recovered is dwarfed by the climate cost of burning material that could have been reduced, reused, or composted.
The framing matters. Every ton of plastic sent to an incinerator is a ton that was never prevented at the source — and a fresh release of climate-warming and health-harming emissions into the air.
The health impacts on frontline communities
The communities living nearest to incinerators and open burning sites breathe the consequences first. These are disproportionately low-income neighborhoods and communities of color — the frontline of what environmental justice advocates call sacrifice zones.
Exposure to the toxic gases from burning plastic is associated with serious health effects, including respiratory illness, cardiovascular stress, and elevated cancer risk from long-term dioxin exposure. Children, older adults, and pregnant people face the greatest danger.
This is not an abstract risk. It is the daily reality for people who never chose to host a facility that turns the world’s plastic waste into the air they breathe.
Why this is an environmental justice issue
Waste infrastructure is rarely built in wealthy neighborhoods. The burden of plastic incineration falls on communities with the least political power and the fewest resources to fight back. Centering these voices is central to GAIA’s mission for a just, zero waste world.
Why burning plastic won’t solve the plastic crisis
Burning plastic is a false solution — a strategy that appears to solve the problem while deepening it. GAIA’s analysis in Burning Plastic Won’t Solve the Plastic Crisis shows why incineration is a dead end.
Here is the core logic:
- It does not reduce plastic production. Incineration creates demand for a steady stream of waste to burn, which locks in more plastic, not less.
- It trades one crisis for another. Solid waste becomes toxic air and ash.
- It undermines real solutions. Money spent on burners is money not spent on reduction, reuse, and community-led zero waste systems.
The real answer is to stop making so much plastic and to build community-led systems that keep it out of both landfills and incinerators. That is the work GAIA and its global network advance every day.
Frequently asked questions about burning plastic
What gases does burning plastic release?
Burning plastic releases dioxins, furans, particulate matter, and hydrogen chloride, along with heavy metals and volatile organic compounds. Dioxins and furans are especially dangerous because they persist in the environment and accumulate in the food chain.
Is burning plastic worse than coal?
Burning plastic is a fossil-fuel-based combustion process, so it releases climate-warming carbon dioxide much like burning coal or oil. It also releases toxic pollutants such as dioxins and hydrogen chloride, which is why GAIA classifies plastic incineration as a climate and health threat rather than a clean energy source. The EU excludes general waste-to-energy incineration from sustainable finance taxonomy lists.
What health effects does plastic smoke cause?
Exposure to plastic smoke is linked to respiratory illness, cardiovascular stress, and increased cancer risk from long-term dioxin exposure. Frontline communities living near incinerators and open burning sites face the highest risk, with children and pregnant people most vulnerable.
Why is plastic incineration called a false solution?
Plastic incineration is called a false solution because it appears to dispose of waste while creating new toxic air pollution and greenhouse gas emissions. It also locks in continued plastic production instead of reducing it at the source, undermining genuine zero waste alternatives.
Take action against burning plastic
The science is clear: burning plastic waste poisons the air and accelerates the climate crisis. The good news is that community-led, zero waste solutions already exist — and they work.
Share this explainer with your network, learn more about GAIA’s work on plastic, and join the Global Week of Action to Stop Incineration. Every voice makes the movement to end plastic incineration stronger.
