Chloe Zhang
Plastic is a part of nearly every product we use daily, with the average person in the US generating about 100 kg of plastic waste per year. While plastic is recyclable, the process of mechanical recycling, where plastic is melted down and reshaped into new products, has limited benefits. This is because the polymers in the plastic become mixed with incompatible additives, resulting in a lower-quality product. However, some companies are now producing products made from 100% recycled plastic, such as vacuum cleaners and packaging. Additionally, a new type of plastic called poly(diketoenamine) (PDK) has been invented, which can be recycled indefinitely without any loss in quality. Despite these advancements, some companies have faced lawsuits for misleading 100% recycled and 100% recyclable claims, as it is not technically feasible for plastic to be infinitely recycled.
| Characteristics | Values |
|---|---|
| Recyclability of plastic | Only 9% of plastic ever made has been recycled. |
| Plastic recycling claims | Coca-Cola, Nestle, and Danone have been sued for misleading "100% recycled" and "100% recyclable" claims. |
| Plastic recycling challenges | The process degrades the properties of plastic, making 'infinite' recycling impossible. |
| Plastic waste | The average person in the U.S. generates about 100 kg of plastic waste per year, most of which ends up in landfills. |
| Plastic recycling benefits | Recycled plastic can be used to create new products, reducing waste and promoting sustainability. |
| Plastic recycling quality | High-quality recycled plastic can produce high-quality products without production problems. |
| Plastic recycling applications | Industries such as automobile, consumer electronics, and packaging can benefit from 100% recyclable plastics. |
| Plastic recycling incentives | Companies can reap the benefits of sustainable branding and long-term savings by using recycled materials. |
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What You'll Learn
Plastic waste and recycling
Plastic is a part of almost every product we use daily. The average person in the US generates about 100 kg of plastic waste per year, most of which ends up in landfills or waste incineration plants. The process of recycling plastic by melting it down and reshaping it into new products has limited benefits. This is because the plastic resin's long chains of polymers become mixed with incompatible additives like pigments and heat stabilizers, resulting in a lower-quality material.
However, there have been recent developments in recyclable plastics. A team from Lawrence Berkeley National Laboratory (Berkeley Lab) has invented a new plastic called poly(diketoenamine) or PDK, which can be recycled indefinitely with no loss in quality. This material has all the convenient properties of traditional plastics while avoiding the environmental pitfalls. Another example is HDPE, or high-density polyethylene, which is strong, sturdy, flexible, non-toxic, and food safe. It is one of the most widely collected and recycled materials and is used by companies like PakTech for sustainable packaging handles.
Some companies have been accused of greenwashing, or misleading consumers, by claiming their products are made from 100% recycled or recyclable plastic. For example, environmental and consumer rights organizations have filed a legal complaint against Coca-Cola, Nestlé, and Danone for using misleading "100% recycled" and "100% recyclable" claims on PET plastic water bottles sold in Europe. These claims suggest that the bottles can be recycled in an infinite, circular loop, which is not technically possible.
Despite these challenges, there are success stories in plastic recycling. Stena Recycling, in partnership with Electrolux, has produced a vacuum cleaner prototype made from 100% recycled plastic with high and stable quality. Additionally, companies like EcoPackables offer 100% recycled plastic polybags that are transparent, eco-friendly, and customizable to meet branding and packaging requirements.
Overall, while plastic waste is a significant issue, innovations in recyclable plastics and successful recycling initiatives provide hope for reducing plastic waste and promoting sustainability.
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Recycled plastic quality
The quality of recycled plastic is a key consideration in the push for a circular economy. The quality of recycled plastic is generally determined by the homogeneity of the recovered plastic feed. The quality of recycled plastic can be improved by implementing strategies such as enhanced product designs for minimised waste heterogeneity and controlling the degree of contamination by applying advanced sorting.
The current primary method of recycling plastic is mechanical recycling, which involves crushing plastic into flakes, processing and transforming them into plastic granules, and then remelting them to form new products. However, this method has limitations, as the remelted plastic often contains incompatible additives, resulting in a lower-quality product.
To address this issue, researchers are exploring chemical processes such as pyrolysis and material separation to improve the quality of recycled plastic. These processes aim to return to the basic component, monomers, using various technologies. For example, Carbios is focusing on biorecycling, which uses enzymes to cut up PET molecules for recycling.
The quality of recycled plastic is also influenced by the type of plastic and its previous use. For instance, plastic from ocean waste or beach cleanups may have degraded structural integrity due to exposure to sunlight and seawater. Additionally, the presence of multiple resins and additives in plastic packaging can make it more challenging to recycle into food-grade material.
Despite these challenges, some companies have successfully created products with 100% recycled plastic that maintain high and stable quality. For example, in collaboration with Electrolux, PE Plast manufactured new plastic components for vacuum cleaner prototypes made entirely from recycled electronic plastics. This demonstrates that recycled plastic can be a viable and high-quality alternative to virgin plastic, reducing plastic pollution and moving towards a more sustainable future.
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Recycled plastic products
Plastic is a part of almost every product we use daily, and the average person in the US generates about 100 kg of plastic waste per year, most of which ends up in landfills. However, the future looks bright for recyclable plastic, with companies increasingly adopting recycled plastic in their production processes.
One notable example is Adidas, which produced about 11 million pairs of shoes using recycled plastics in 2019. Their partnership with Parley, a project focused on finding solutions to reduce plastic pollution in the oceans, has successfully kept approximately 2,810 tons of plastic from reaching the oceans. Similarly, Patagonia has been recycling polyester since the 1990s, using plastic soda bottles to create the materials for their jackets and other clothing lines. As a result, 84% of their fabrics are now made from recycled plastic.
In the realm of consumer electronics, Electrolux and Stena Recycling collaborated to develop a 100% recycled and recyclable vacuum cleaner prototype. PE Plast, a company that manufactured the new plastic components for this project, delivered finished prototype components within a few weeks of receiving the circular raw material. This demonstrates the feasibility of producing high-quality plastic components from 100% recycled material.
Additionally, Bureo, a B corporation with a mission to clean up the oceans, transforms discarded plastic fishing nets into clothing, sunglasses, and even skateboards. Their efforts not only recycle plastic waste but also contribute to ocean conservation by intercepting nets before they enter the ocean.
The construction industry has also embraced recycled plastic. Concrete, bricks, plastic boards, lumber, and decking incorporating recycled plastic are more durable and affordable. These structures last a long time, providing an invaluable purpose for indestructible plastic.
Overall, the development and utilisation of recycled plastic products are gaining momentum. Companies across various industries are recognising the importance of sustainability and are committed to reducing their plastic footprint.
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Plastic waste reduction
Plastic waste is a pressing issue that affects the environment, wildlife, and human health. While some plastics are recyclable, only a small fraction of the plastic ever produced has been recycled, and the majority of it ends up in landfills, incineration plants, rivers, oceans, and soils. To address this issue, it is essential to focus on reducing, reusing, and recycling plastic waste.
One effective way to reduce plastic waste is to minimise the use of single-use plastics and opt for reusable alternatives. This includes using cloth napkins, reusable dishes, cutlery, bags, water bottles, and containers. Avoiding plastic produce bags, switching to soap bars instead of shower gel, and refusing plastic utensils and straws when ordering takeout are also simple ways to reduce plastic waste. Additionally, when buying products, it is advisable to choose items with minimal packaging or those packaged in materials that can be easily recycled, such as glass or aluminium.
Another strategy to reduce plastic waste is to support companies that use recycled plastic in their products. This encourages the development and use of sustainable materials, such as the recently invented poly(diketoenamine) (PDK), which can be recycled indefinitely without losing quality. By creating a market for recycled plastic, we can incentivise the recycling of plastic waste and divert it from landfills and the environment.
Proper disposal and recycling of plastic waste are also crucial. It is important to separate different types of plastics according to the accepted standards in your community and to check which types of plastic your local recycling program accepts. Plastic bags, wrap, and film, for example, require special recycling processes and cannot be placed in household recycling bins. Compostable plastics should also be kept separate from regular plastics to avoid contaminating the recycling stream.
Lastly, it is important to repair, reuse, or repurpose plastic items whenever possible. Instead of discarding unwanted plastic items that are still in good condition, consider selling or donating them. This extends the lifespan of plastic products and reduces the demand for new plastic production.
By implementing these strategies and raising awareness about plastic waste reduction, we can collectively work towards a cleaner and healthier environment for ourselves and future generations.
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Plastic recycling challenges
Plastic recycling is a challenging process due to the material's complex nature and the various types of plastics available. The challenges range from technological factors to economic and social behaviour issues.
Firstly, the variety of plastic types poses a significant challenge. There are thousands of different types of plastic, each with unique properties affecting its colour, shape, structure, and melting point. This complexity demands meticulous sorting to maintain purity, which is crucial for effective recycling. However, the task of sorting becomes arduous when different plastic types are combined during manufacturing, often resulting in plastics being incinerated or landfilled, wasting valuable resources.
Secondly, the economic aspect of plastic recycling presents challenges. Virgin raw materials used in manufacturing are sometimes cheaper than recycled plastics, creating a cost barrier for recycled plastic adoption. Additionally, recycling certain plastics can be expensive due to the intricate processes involved in collecting, sorting, and processing them. For instance, the collection and sorting processes require specialised knowledge and infrastructure, which can be costly.
Thirdly, social behaviour issues play a role in the challenges of plastic recycling. Despite consumers' efforts to recycle, a significant portion of plastic waste ends up in landfills or waste incineration plants. This is partly due to the limitations of recycling facilities, which often cannot accommodate all types of plastic. As a result, even recyclable plastics may be landfilled or incinerated, contributing to environmental concerns.
Furthermore, the design of some products hinders recycling efforts. Many products are manufactured in ways that make it difficult to separate and recycle the plastic content. For example, plastics may be bonded with other materials, such as glue or metal screws, requiring specific expertise to disassemble and sort effectively.
Lastly, the lack of collaboration within the plastic industry itself poses a challenge. Unlike the steel industry, the plastic industry lacks unified collaboration between raw material suppliers, subcontractors, and manufacturers. This fragmentation hinders the development of innovative solutions and efficient approaches to plastic recycling.
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Frequently asked questions
No, plastic is not 100% recyclable. Only nine percent of plastic ever made has been recycled. However, there are some plastics that are 100% recyclable, such as poly(diketoenamine) (PDK) and high-density polyethylene (HDPE).
The average person in the US generates about 100 kg of plastic waste per year, most of which goes to landfills.
Some products made from 100% recycled plastic include polybags, vacuum cleaner prototypes, and ballpoint pens.
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