Chloe Zhang
Plastic recycling is a complex and often misunderstood process. While recycling is generally considered beneficial for the environment, the reality of plastic recycling is more nuanced. The process of collecting, sorting, and melting plastic is expensive, and the resulting product is often of lower quality, limiting its market value. Additionally, the variety of plastic types and the need for specialised recycling processes for each type further complicate the matter. The public has been encouraged to recycle plastics, but the infrastructure and economic viability of plastic recycling have not kept pace, leading to a situation where much of the plastic collected ends up in landfills or the ocean. This article will explore the challenges of plastic recycling, the role of industry and governments in perpetuating or addressing these issues, and potential solutions to reduce plastic waste.
| Characteristics | Values |
|---|---|
| Plastic waste sent to China | China was the world's largest market for recycled waste but shut its doors in 2018 |
| Plastic waste in landfills | Most plastic waste ends up in landfills |
| Cost of recycling | It costs more to recycle than to dispose of the same material as garbage |
| Plastic waste sent to Europe and Asia | About two-thirds of plastics are sent to Europe or Asia for recycling |
| Plastic waste in the US | The US recycles only 32% of its plastic waste |
| Global plastic waste | Only 9% of plastic waste is recycled globally |
| Plastic waste and recycling labels | Many plastic items are only sometimes labeled correctly for recycling |
| Energy savings from recycling plastic | Recycling plastic results in energy savings of up to 70% compared to using virgin plastic, leading to lower emissions of CO2 and other greenhouse gases and reduced extraction of Earth's resources |
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What You'll Learn
- Plastic is expensive to collect, sort and reprocess
- It degrades each time it is reused, limiting reuse to once or twice
- Oil companies misled the public about the viability of plastic recycling
- The public is confused about what can and cannot be recycled
- Plastic often ends up in landfill in other countries
Plastic is expensive to collect, sort and reprocess
Plastic recycling is a complex and costly process. It involves multiple steps, each of which incurs expenses. Firstly, collection requires significant investment in infrastructure and transportation. This includes the cost of special equipment such as compactors, additional trucks, and crews for pickup. The process of collection is further complicated by the need to separate plastic waste from other materials, often requiring separate bins and bags.
Once collected, the plastic waste must undergo the sorting process, which is another significant expense. Sorting facilities utilize advanced technology, such as optical detection systems and infrared technology, to separate plastics by type, colour, size, and thickness. The sorting process is crucial to ensuring the quality and safety of the final recycled product, but it is also intricate and time-consuming, especially when dealing with multi-layered plastics or plastics with complex packaging designs.
After sorting, the plastic needs to be washed and shredded. This step removes impurities such as labels, glue, dirt, and food scraps. The washing process requires specialized equipment and a steady supply of water, adding to the overall cost. Furthermore, the shredded plastic flakes must be further processed into granulate, which can then be melted and molded into new products.
The entire recycling process also incurs operational costs, including labor, fuel, maintenance, and publicity. These allocated costs are ongoing and necessary to keep the recycling program running. Additionally, there may be hidden costs associated with the environmental impact of plastic recycling. For example, the production and use of plastic can contribute to air and water pollution, leading to potential health risks and ecological damage.
While the benefits of plastic recycling are significant in terms of resource conservation and environmental protection, the financial burden of collecting, sorting, and reprocessing plastic waste cannot be overlooked. The high costs involved present a challenge to making plastic recycling more accessible and widespread.
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It degrades each time it is reused, limiting reuse to once or twice
Plastic recycling is a complex and challenging process, and one of the significant challenges faced by recyclers is the degradation of plastic with each reuse. This limitation means that plastic can only be reused once or twice before it becomes unsuitable for further recycling.
Plastic is a versatile material, and its properties can be tailored for various applications, from packaging to durable goods. However, this versatility also poses challenges for recycling. Different types of plastics have different chemical compositions and melting points, which makes them difficult to process together. As a result, recyclers must separate plastics into different streams, which can be costly and time-consuming.
Even within the same type of plastic, such as PET (polyethylene terephthalate), there can be variations in quality and additives used, affecting the recycling process. Each time plastic is recycled, it undergoes a process of melting, reheating, and remoulding, which breaks down its polymer chains. This degradation results in a lower quality material with reduced strength and flexibility.
Additionally, plastics are often contaminated with impurities, such as food residue, labels, or other materials, which can further impact the quality of the recycled product. These contaminants can be difficult to remove completely, and even small amounts can affect the performance of the recycled plastic. Therefore, recyclers must invest in advanced technologies to sort and clean the plastic waste, adding to the overall cost and complexity of the recycling process.
The limitations on reusing plastic have significant environmental implications. As plastic degrades with each reuse, it cannot be recycled indefinitely, leading to a constant demand for virgin plastic production. This continuous reliance on new plastic contributes to the depletion of fossil fuels and the emission of greenhouse gases, undermining the sustainability benefits of recycling.
To address these challenges, recyclers are exploring innovative technologies and processes. For example, chemical recycling, which breaks down plastic waste into its chemical components, offers the potential for more effective recycling and the creation of higher-quality recycled materials. However, these advancements also come with their own set of economic and technical considerations.
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Oil companies misled the public about the viability of plastic recycling
The oil and gas industry has long been aware of the limitations of plastics recycling, yet has used the promise of recycling to sell more plastic. In the late 1980s, public opinion began to turn against plastics, with an increasing percentage of people believing that plastics were harmful to the environment and public health. In response, Big Oil launched a massive disinformation campaign, spending hundreds of millions of dollars on advertisements promoting the idea that most plastics could be recycled. They also built recycling centres to deal with the anticipated boom in plastic recycling, many of which closed within five years.
The industry has known since the 1970s that recycling was not a realistic solution for most plastics, yet continued to push the idea that plastic could and would be recycled. In 1994, Exxon Chemical Vice President Irwin Levowitz was clear about the industry's priorities when addressing the American Plastics Council. Larry Thomas, former president of the Society of the Plastics Industry, admitted that the industry wanted to "take the heat off" and continue manufacturing plastic products. Documents from 1989 show that Thomas called executives from several oil and gas companies, including Exxon, Chevron, and Dow, to a private meeting, warning them that the viability of the plastics industry was at stake and that they needed to act to improve its image.
The oil industry has continued to promote recycling and clean-up efforts while resisting calls for a reduction in plastic production or the development of plastic alternatives. In 2019, they launched a billion-dollar campaign, The Alliance to End Plastic Waste, which shifted the blame for plastic waste from producers to consumers. The recycling symbol, with its three arrows, has been co-opted by the industry-backed RIC number system and used as a tool by lobbyists working for Big Oil to trick the public into thinking that recycling is achievable.
The reality is that most plastic is not recycled. Before 2018, when China shut its doors to recycled waste, most plastic trash was sent there from the US and other countries. Since then, much of it has ended up in landfills or has been burned or dumped in the ocean. Recycling facilities exist, but only a fraction of the plastic produced ever winds up being recycled.
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The public is confused about what can and cannot be recycled
The public's confusion is also due to the fact that the recycling symbol on plastic products does not mean that the product is recyclable. Instead, the symbol merely identifies what kind of plastic the product is made of. Furthermore, the public has been misled by the oil and gas industry, which used the promise of recycling to sell more plastic, even when they knew it would never work on a large scale.
To address this confusion, the advice is to check with local authorities about what can and cannot be recycled. Households should receive a leaflet with this information, and it should also be available on local authorities' websites. It is also recommended to make a list of what can and can't be recycled in your area and stick it somewhere visible.
The UK government has also introduced new rules asking people to stop "over-recycling" and to be more careful about what they put in their recycling bins. This is to reduce the amount of dirty or contaminated waste that goes to processing centres and landfills. For example, items such as toothpaste tubes, takeaway packaging, and juice cartons cannot be properly processed at recycling centres and should be disposed of differently.
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Plastic often ends up in landfill in other countries
Plastic recycling is a challenging and often inefficient process. It requires sorting at a vast scale, which can be time-consuming and expensive. While all used plastic can technically be turned into new things, the process of picking it up, sorting it out, and melting it down is costly. Plastic also degrades each time it is reused, limiting the number of times it can be recycled. Furthermore, the recycling process can be contaminated by food and other materials, rendering the entire batch unusable.
The inefficiency of plastic recycling means that a significant portion of plastic waste ends up in landfills or is incinerated. In the United States, three-quarters of plastics go to landfills, while in Europe, incineration is a more common method of disposal. Low recycling rates and improper waste management contribute to plastic pollution, with plastic waste ending up in oceans, rivers, lakes, and the environment.
The responsibility for improving plastic recycling rates lies with both individuals and governments. Individuals can adopt a zero-waste culture, seeking out recyclable or reusable products and ensuring that any materials they recycle are clean and free from contaminants. Governments, on the other hand, have a duty to create access to recycling infrastructure, implement regulations, and encourage citizens to recycle through incentives and educational campaigns.
Additionally, it is important to address the role of the plastic and oil industries in perpetuating the myth of plastic recycling. Despite internal doubts about the viability of plastic recycling, these industries spent millions of dollars promoting the idea that plastic could be and would be recycled. This misled consumers and delayed the adoption of more effective waste management strategies.
The challenges of plastic recycling have led to a situation where plastic waste is often exported to other countries for processing. However, this practice has come under scrutiny due to ethical concerns and the risk of contamination. China, once the world's largest market for recycled waste, restricted the import of certain types of waste in 2018, citing contamination issues. This decision had a significant impact on the global waste trade, highlighting the urgency of improving domestic waste management capabilities.
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Frequently asked questions
Recyclers dislike recycling plastic because it is expensive to collect, sort, and melt down. Plastic also degrades each time it is reused, meaning it can't be reused more than once or twice.
There are thousands of different types of plastic, and none of them can be melted down together. Plastic production is increasing, but the percentage of plastic being recycled is decreasing.
Plastic that is not recycled often ends up in landfills or is burned, which can have negative environmental consequences.
To improve plastic recycling, governments and municipalities should provide convenient access to recycling bins and centralized collection points, as well as create incentives, laws, and regulations that make it easier for people to recycle.
