Kiera Jefferson
Incinerators are a source of energy, with the combustion process delivering steam that can be used to generate electricity. While incinerators reduce the volume of solid waste, they are also a significant source of pollution. Incinerators emit more greenhouse gas emissions per unit of electricity produced than any other power source. They release air pollutants, including nitrogen oxides, sulfur dioxides, particulate matter, lead, mercury, dioxins, and furans, which have serious public health effects, including increased cancer risk, respiratory illness, and cardiac disease. The concentration of incinerators in certain areas, particularly environmental justice communities, exacerbates the impact of these pollutants on vulnerable populations. Additionally, the combustion of synthetic materials, such as plastics, in incinerators can release harmful pollutants, further contributing to environmental inequalities and health hazards.
| Characteristics | Values |
|---|---|
| Principal products of combustion | CO2, water vapour, and ash |
| Other products of incomplete combustion | Sulfur compounds, nitrogen compounds, halogens (e.g. chlorine), toxic metals, particulate matter, acid gases, mercury, lead, dioxins, PFAS |
| Particulate matter concentrations in flue gas | 180 to over 46,000 mg per dry standard cubic meter |
| Residues generated by hazardous-waste incineration | Hazardous waste, except waste burned for metal recovery |
| Ash disposal | Secure hazardous-waste landfill, landfill disposal mixed with municipal solid waste, ash monofill, construction materials, roadbeds, or experimental reefs |
| Environmental impact | Global warming, acidification, photochemical ozone or smog formation, eutrophication, human and animal toxicity |
| Energy efficiency | Low or non-existent net energy generation due to energy required to run incinerators |
| Health impact | Increased risk of cancer, respiratory symptoms, congenital abnormalities, hormonal defects, adverse birth outcomes |
| Social impact | Disproportionately affects low-income communities and communities of colour |
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What You'll Learn
- Incinerators emit more greenhouse gases per unit of electricity produced than any other power source
- Incinerators worsen environmental inequalities and impact public health
- Incinerators are a source of energy, but they are the most emissions-intensive form of power generation
- Plastics are particularly problematic when incinerated as they release harmful pollutants
- Incinerators are heavily concentrated in northeast US states and Florida
Incinerators emit more greenhouse gases per unit of electricity produced than any other power source
Incinerators emit a significant amount of pollution and are detrimental to the environment and human health. They release a range of air pollutants, including nitrogen oxides (NOx), sulfur dioxides (SO2), particulate matter, lead, mercury, dioxins, and furans. These pollutants have severe public health implications, increasing the risk of cancer, respiratory illness, cardiac disease, and developmental and neurological issues.
The impact of incinerators on air pollution is particularly pronounced in environmental justice communities, which are disproportionately affected by environmental health hazards. Incinerators are often located in areas with high population densities and limited landfill space, further exacerbating the pollution burden on these communities.
Moreover, incinerators emit substantially more greenhouse gases per unit of electricity produced than any other power source. Studies have found that incinerators emit 1707 g CO2e/kWh, compared to a range of 2.4 to 991.1 g CO2e/kWh for other power sources. This makes incinerators the most emissions-intensive form of power generation. For example, per unit of electricity produced, incinerators emit 1.7 times as much GHGs as coal, the next most polluting fuel.
The inclusion of incinerators in "renewable" or "clean" energy standards is counterproductive. Despite being classified as a form of renewable energy, incinerators divert more than $40 million in subsidies annually from cleaner energy sources. As the electric grid moves towards decarbonization, the disparities in emissions between incinerators and other cleaner energy sources will become more pronounced.
Additionally, the composition of municipal solid waste has changed over the years, with an increase in synthetic materials like plastics and a decrease in compostable materials. Plastics, being petroleum-based, release harmful pollutants such as dioxins and heavy metals when incinerated. This further contributes to the environmental and health impacts associated with waste incineration.
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Incinerators worsen environmental inequalities and impact public health
Incinerators emit a large number of air pollutants, including nitrogen oxides, sulfur dioxides, particulate matter, lead, mercury, dioxins, and furans. These pollutants have serious public health effects, including an increased risk of cancer, respiratory illness, cardiac disease, and reproductive, developmental, and neurological problems. Incinerators are particularly harmful to children, causing higher concentrations of air pollutants that alter pulmonary function and increase the prevalence of asthma.
The impact of incinerators on public health is not limited to the immediate vicinity of the incinerator but can also affect downwind communities. Older and poorly controlled incinerators pose a higher risk to public health, and their continued operation can have significant consequences for the surrounding communities. Additionally, the release of pollutants from incinerators contributes to environmental inequalities, particularly in low-income communities and communities of color. These communities are already overburdened by multiple pollution sources, and the presence of incinerators further exacerbates the cumulative impacts of pollution on these neighborhoods.
The operation of incinerators also creates financial risks for host communities. The high operation and maintenance costs of incinerators often fall on the public through bonds or tax increases. As plants age, their environmental performance degrades, posing even greater risks to public health and the environment. The volatile revenue model of incinerators, coupled with the increasing costs of upgrades, makes it difficult for these communities to bear the financial burden associated with incinerators.
The continued use of incinerators also reduces the incentive to adopt more sustainable waste practices. With advancements in waste handling options, many materials can now be composted or recycled, reducing the environmental impact of waste disposal. However, the presence of incinerators as a convenient method of waste disposal hinders the transition to more sustainable alternatives.
In conclusion, incinerators worsen environmental inequalities and impact public health through the release of harmful pollutants, the creation of financial burdens for host communities, and the hindrance of sustainable waste practices. To protect public health and the environment, it is essential to transition to newer, environmentally friendly technologies for waste disposal and ensure that vulnerable communities are not disproportionately affected by the presence of incinerators.
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Incinerators are a source of energy, but they are the most emissions-intensive form of power generation
The concentration of incinerators in certain areas, particularly environmental justice communities, exacerbates the problem. Environmental justice communities are defined as areas where a significant proportion of residents are low-income, people of color, or both. The presence of incinerators in these communities contributes to cumulative impacts from multiple pollution sources, worsening environmental inequalities.
The composition of waste burned in incinerators has also changed over time, with an increase in synthetic materials such as plastics and a decrease in compostable materials. Plastics are particularly problematic when incinerated as they release harmful pollutants such as dioxins and heavy metals. This shift in waste composition further contributes to the environmental and health impacts of incinerators.
While incinerators may reduce the volume of solid waste, they do not eliminate the toxic substances contained within the waste. The toxic ash produced during incineration still requires disposal, and the release of pollutants during the combustion process contributes to air pollution.
In comparison to other power sources, such as coal, incinerators emit higher levels of pollutants per unit of energy produced. For example, to produce the same amount of energy, incinerators release more carbon dioxide, carbon monoxide, nitrogen oxides, mercury, lead, and hydrochloric acid than coal-powered plants.
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Plastics are particularly problematic when incinerated as they release harmful pollutants
Incinerators are a major source of air pollution, and plastics are particularly problematic when burned in this way. Plastics are largely made from fossil fuels, so burning them is as unsustainable as burning any other fossil fuel. Furthermore, the burning of plastics releases harmful pollutants, including dioxins, furans, mercury, and heavy metals. These substances have serious public health effects, including an increased risk of cancer, respiratory illness, cardiac disease, and reproductive, developmental, and neurological problems.
Plastics are also a major contributor to climate change. The incineration of plastic waste releases toxic gases and hazardous chemicals into the atmosphere, causing environmental damage and threatening human, animal, and vegetation health. For example, dioxins can settle on crops and in waterways, eventually entering the human food system. The burning of Poly Vinyl Chloride (PVC) also releases hazardous halogens, which contribute to climate change.
The open burning of plastics is a significant source of air pollution. Plastics are petroleum-based, non-biogenic materials that are challenging to decompose. When plastics are incinerated, they release harmful pollutants, such as dioxins and heavy metals, into the environment. These pollutants can have detrimental effects on both human health and the environment.
Additionally, incinerating plastic waste does not effectively solve the plastic pollution problem. Plastics will continue to contaminate the environment, even if a portion is burned. As plastic producers continue to pump out more plastic, the chances of collecting and incinerating all of it are minimized. Consequently, the plastic that is not collected will eventually find its way into our oceans, lakes, and parks, further exacerbating the pollution issue.
Moreover, incinerators themselves contribute to chemical pollution. The long service life of incinerators delays the transition to renewable energy sources, and the energy production process is less effective than coal combustion. Incinerators produce higher carbon dioxide amounts per kWh than the average for energy production in the EU, and by 2050, plastic waste incineration is predicted to be a more significant carbon dioxide source than fossil fuel combustion.
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Incinerators are heavily concentrated in northeast US states and Florida
Incinerators are facilities that burn trash to dispose of it. They have been used for a long time in the United States, but they are particularly concentrated in the northeast and Florida. These regions have high population densities and limited landfill space, which has led to the adoption of incineration as a waste management solution. However, incinerators emit harmful pollutants and contribute to air pollution, affecting nearby communities.
The northeast region, including states like New York, and Florida have been identified as hotspots for waste-to-energy (WTE) facilities or incinerators. This concentration can be attributed to various factors, including the high population densities in these areas. With more people, there is inevitably more waste generated, necessitating waste management solutions. Additionally, these regions, particularly the northeast, have limited landfill space, making it challenging to rely solely on landfills for waste disposal.
Florida, for instance, has provided economic incentives for incinerator technologies, and as of 2024, had 11 waste incinerators in operation, the most of any state. In contrast, New York, another northeastern state, has excluded municipal solid waste incineration from its renewable energy goals but still has ten operating incinerators. The concentration of incinerators in these states is notable, especially considering the environmental and health impacts associated with incineration.
Incinerators emit various air pollutants, including nitrogen oxides (NOx), sulfur dioxides (SO2), particulate matter, lead, mercury, dioxins, and furans. These emissions have serious public health effects, ranging from increased cancer risk to respiratory illnesses, cardiac disease, and neurological problems. The release of these pollutants into the atmosphere contributes to air pollution, particularly affecting communities located near incinerators.
The impact of incinerators is further exacerbated when they are sited in environmental justice communities, which are often areas with a significant proportion of low-income residents, people of color, or both. About 80% of incinerators are located in these marginalized communities, and their presence worsens the cumulative impacts from multiple pollution sources. The emissions from incinerators create environmental inequalities, financial risks, and reduced incentives for adopting more sustainable waste practices in these already overburdened neighborhoods.
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Frequently asked questions
Incinerators emit a large amount of pollution, including nitrogen oxides, sulfur dioxides, particulate matter, lead, mercury, dioxins, and furans. They are the most emissions-intensive form of power generation per unit of electricity produced.
The release of these pollutants has serious public health effects, including an increased risk of cancer, respiratory illness, cardiac disease, and reproductive, developmental, and neurological problems. Incinerators also worsen environmental inequalities and create financial risks for host communities.
Trash incinerators are the dirtiest way to make electricity by most air pollution measures. In 2018, it was found that incinerators released 65% more carbon dioxide, as much carbon monoxide, three times as much nitrogen oxide, five times as much mercury, nearly six times as much lead, and 27 times more hydrochloric acid than coal power plants to produce the same amount of energy.
