Ethan Clarke
Black plastic food containers are a common sight in the U.S., often used for takeout orders and meat or produce trays. However, they have come under scrutiny in recent years due to their impact on the environment and potential health hazards. While black plastic technically can be recycled, it is not always recycled in practice due to challenges with sorting technology. This has led to concerns about the safety of recycled black plastic items and their contribution to landfill waste. Additionally, studies have found that some black plastic items contain harmful chemicals and flame retardants, which can leach into food and pose risks to human health. As a result, consumers are encouraged to avoid purchasing products packaged in black plastic and to dispose of black plastic items separately from other recyclables.
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What You'll Learn
- Black plastic containers are not recyclable due to their colour
- Optical scanners at recycling facilities cannot detect black plastic
- Black plastic is often made from e-waste, which contains toxic materials
- Black plastic containers can contain harmful chemicals and flame retardants
- Consumers can avoid black plastic containers by using glass, ceramic or metal containers
Black plastic containers are not recyclable due to their colour
The inability of scanners to detect carbon black creates more work and expense for recyclers, as black plastic items must be hand-sorted. In addition, black plastic cannot be dyed other colours when making new products, limiting its recycling potential.
The issue of black plastic recycling has been exacerbated by the pandemic, with the increase in takeout containers contributing to higher levels of contamination in recycling programs. While some machines can handle black plastic containers, they are not commonly used for beverages.
To reduce the impact of black plastic on the environment, it is recommended to avoid purchasing products packaged in black plastic and to choose compostable or biodegradable alternatives whenever possible. Consumers can also express their preference for recyclable packaging to businesses and opt for reusable foodware instead of single-use items.
It is worth noting that black plastic containers have also been found to contain harmful chemicals and flame retardants, providing additional reasons to avoid their use and properly dispose of them.
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Optical scanners at recycling facilities cannot detect black plastic
Black plastic is notoriously difficult to recycle. While it can be recycled, most black plastic ends up in landfills, incinerators, or the environment. This is because the carbon black pigment used to dye black plastic is not recognised by the near-infrared scanners used for sorting recyclables at recycling facilities.
Near-infrared scanners work by analysing how light is reflected by different materials. Carbon black absorbs infrared light, so black plastic is invisible to the scanners and is not sorted for recycling. As a result, black plastic items are often skipped during sorting and end up in landfills.
The use of optical systems to sort plastics by resin and colour is common, with the demand and investment from processors driving forward optical innovation. However, optical sortation equipment makers have noted that as materials recovery programs grow and single-stream collection of recyclables becomes more common, processors have encountered poor-quality incoming materials. Changes in packaging design mean that more challenging items are found in the stream, including full-sleeve bottle labels, flexible and multi-layer packaging, and smaller packaging.
While black plastic can be recycled, it is important to check with your local recycler to see if they have a separate process for black plastic. Some facilities may have alternative methods for sorting black plastic, such as visual-range spectrometry or X-ray systems. However, it is still best to avoid purchasing products packaged in black plastic and to choose clear or light-coloured plastic instead, as these are easily recyclable.
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Black plastic is often made from e-waste, which contains toxic materials
Black plastic food containers are difficult to recycle because they are often made from carbon black, which is not recognised by the near-infrared scanners used for sorting recyclables. This means that black plastic items often end up in landfills, incinerators, or littered in the environment after just a single use.
Due to the lack of recycled black plastic, the demand is often met with e-waste (discarded electronics like old computers, phones, TVs, monitors, speakers, and appliances). These electronic products contain toxic chemicals such as phthalates, flame retardants, and heavy metals such as cadmium, lead, nickel, chromium, and mercury. These chemical-laced plastics are then melted down, mixed with food-grade plastics, and turned into everyday items such as children's toys, single-use utensils, coffee stirrers, cooking implements, and garden hoses.
The problem with using e-waste to make black plastic products is that the toxic chemicals in the e-waste can leach into food and pose a hazard to human health. A 2024 study by scientists from Toxic Free Future and Vrije Universiteit Amsterdam found high levels of cancer-causing, hormone-disrupting flame retardant chemicals in black plastic household products, including food serviceware, kitchen utensils, and toys. These toxic chemicals can cause serious reproductive and developmental problems, poisoning the brain and kidneys, disrupting human thyroid function, affecting development, and causing long-term neurological damage.
While not all black plastic products in your kitchen contain recycled electronic waste, it can be difficult to know for sure due to the lack of available labelling. Experts recommend getting rid of any black plastic items that come into contact with food, especially if they are exposed to heat, as this increases the likelihood of toxic chemicals leaching into your food and drink.
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Black plastic containers can contain harmful chemicals and flame retardants
Black plastic containers are not recycled due to their colour. The black colour is created by adding a substance called carbon black to the plastic. Optical sorters and near-infrared scanners at recycling facilities cannot detect carbon black, and therefore cannot "see" black plastic containers on the conveyor belts. As a result, black plastic items often end up in landfills, incinerators, or littered in the environment after just a single use.
The demand for black plastic is often met by melting down e-waste, which contains toxic chemicals such as phthalates, flame retardants, and heavy metals. These chemical-laced plastics are then mixed with food-grade plastics and turned into various everyday items, including children's toys, single-use utensils, and food containers.
A study published in the journal Chemosphere found dangerous levels of toxic chemicals in black plastic household items, including kitchen utensils, toys, and food containers. The authors of the study screened 203 consumer products for two kinds of flame retardants: brominated flame retardants (BFRs) and organophosphate flame retardants (OPFRs). They found flame retardants in 85% of the products, with the highest levels in a sushi tray, a spatula, and a beaded necklace meant for children.
Flame retardants have been linked to carcinogenicity, endocrine disruption, neurotoxicity, and reproductive and developmental toxicity. People with the highest levels of flame retardant chemicals in their blood had about a 300% greater risk of dying from cancer compared to those with the lowest levels. Therefore, it is recommended to avoid using black plastic products, especially for food storage and consumption.
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Consumers can avoid black plastic containers by using glass, ceramic or metal containers
Black plastic containers are not recycled due to their colour. The black colour is created by adding carbon black to the plastic, which is not recognised by the near-infrared scanners used for sorting recyclables. As a result, these items are often skipped during sorting and end up in landfills.
Consumers can play a crucial role in reducing the use of black plastic containers by opting for alternative materials, such as glass, ceramic, or metal containers. Here are some ways consumers can actively avoid black plastic containers:
- When purchasing food in a black plastic container, transfer the contents to a glass, ceramic, or metal storage container when you get home. Glass, ceramic, and metal containers are safer alternatives as they do not contain harmful chemicals that can leach into food.
- Carry your own metal, bamboo, wooden, or stainless-steel cutlery to avoid using black plastic utensils such as forks, spoons, knives, or stirrers.
- Avoid single-use hot cups, especially those with black plastic lids. Instead, bring your own metal, ceramic, or stainless-steel mug, ensuring that the lid is not made of black plastic.
- Avoid purchasing products packaged in black plastic. Choose products packaged in clear or light-coloured plastic, as these are easily recyclable.
- Talk to your favourite restaurants about using alternative materials for leftovers, such as cardboard containers, and offer to bring your own reusable containers if possible.
- Avoid heating food in black plastic containers, whether in a microwave or otherwise, as this can cause toxic chemicals to leach into your food. Instead, use glass, ceramic, or stainless-steel containers that are microwave-safe.
By making these simple changes, consumers can significantly reduce their reliance on black plastic containers and contribute to a more sustainable future.
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