Maya Ellison
Plastic recycling is a complex and often misunderstood topic. Many people assume that their plastic waste is being recycled effectively, but the reality is that plastic recycling rates are extremely low globally. A significant portion of plastic ends up in landfills, the environment, or is incinerated, contributing to pollution and climate change. The plastic recycling process is challenging due to the diverse types of plastics, the degradation of plastic quality with reuse, and the high costs of recycling compared to producing new plastic. Additionally, the transportation and disposal of plastic waste contribute to pollution through fuel usage and the release of hazardous substances. While recycling is an important part of the solution, reducing plastic consumption and developing sustainable alternatives are crucial to addressing the plastic pollution crisis.
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What You'll Learn
Plastic recycling rates
The reasons for these low rates are varied. Firstly, plastic is not designed to be recycled. While 75% of global plastics are thermoplastics, which can be melted and moulded into new plastics, the remaining 25% are thermoset plastics that do not soften with heat and are almost impossible to recycle. Even recyclable plastics may not be recycled due to contamination from food residues or oil, for example. Only good-quality, clean plastics are suitable for the recycling process, and the recycling process is energy-intensive and costly.
The transportation of plastic contributes to plastic pollution, as it easily escapes and enters the environment, breaking into tiny microplastic particles that can end up in our bodies through food and drink. The plastic waste trade has grown significantly, but the actual recycling of plastic makes up a very small share of the market.
Furthermore, the concept of "greenwashing" has been used by corporations to exaggerate the environmental benefits of their products or practices, such as plastic recycling. For example, the use of vague labels like "green" or "eco-friendly" on plastic items or the inaccurate use of terms like "zero-waste" and "circular" to describe plastic recycling.
Despite the challenges, some countries are working towards establishing a circular economy for plastic, involving banning single-use plastics with low reuse value, as well as implementing robust collection, reuse, and recycling efforts.
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Plastic recycling methods
Plastic recycling is vital for creating a more sustainable future. However, only about 9% of all the plastic ever produced has been recycled, with 72% ending up in landfills and the environment, and 19% incinerated.
The low recycling rate is due to a combination of factors, including inefficient systems, the complexity of recycling different types of plastics, and the material properties of plastics.
There are three main types of plastic recycling methods: mechanical, chemical, and bacterial. Mechanical recycling is the most prevalent method, responsible for the majority of plastic recycling worldwide. It involves grinding, washing, sorting, and reprocessing plastic material to repurpose it into new products. However, mechanical recycling can only handle certain types of plastics, and the process is energy-intensive and costly.
Chemical recycling is a newer technology that can recycle plastics that may not be suitable for mechanical recycling. It involves breaking down the polymer structure of plastics through processes such as pyrolysis, gasification, and depolymerization, to create raw materials that can be used to manufacture new products.
Bacterial recycling, also known as enzyme recycling, uses bacteria and enzymes to break down plastics. This method is still being researched and developed, but it shows promise for recycling plastics that other methods cannot.
The recycling process typically involves several steps, regardless of the specific method used. These steps include collecting and separating recyclable materials, cleaning and washing to remove contaminants, shredding or grinding the plastic into smaller pieces, melting the plastic, and finally, reprocessing the plastic into new products.
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Plastic waste trade
Plastic recycling is often touted as a solution to the world's growing plastic waste problem. However, the reality is that most plastic is not recycled. In fact, about 91% of plastic is not recycled due to various reasons, such as the material properties of plastics, food residue on plastic items, and the high cost of recycling compared to producing new plastic. The plastic that is recycled is often shipped overseas to developing countries, which has led to concerns about "waste colonialism" and the environmental and health impacts of the plastic waste trade.
The plastic waste trade refers to the international trade of waste between countries for further treatment, disposal, or recycling. It is often driven by the global waste industry, which generates nearly $1,300 billion annually and includes a network of businesses, governments, and individuals. The trade has grown significantly over time, mirroring the growth in global plastic production, but it has also become a source of controversy due to concerns about environmental and social responsibility.
One of the main issues with the plastic waste trade is the export of toxic or hazardous waste from developed countries to developing countries, such as those in the Asia Pacific region. This practice has been referred to as "waste colonialism" as it highlights the power imbalance between economically developed countries and the less affluent nations that receive their waste. The recipient countries are often ill-equipped to manage the waste, leading to human rights violations, environmental destruction, and contributions to marine plastic pollution.
To address these issues, there have been calls for stricter controls and regulations on the global trade in plastic waste. For example, the European Union's Waste Shipment Regulation (WSR) is currently being reviewed to include bans on plastic-waste exports to non-EU countries and stringent measures for intra-EU trade. Additionally, campaigns such as the one led by the EIA aim to severely restrict and phase down the international trade in scrap plastic to ensure environmentally and socially responsible management.
The plastic waste trade is a complex issue that requires global cooperation and comprehensive solutions. While recycling can be a part of the solution, it is important to focus on reducing plastic consumption and finding sustainable alternatives to address the root causes of the plastic waste crisis.
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Plastic incineration
The burning of plastic waste can have detrimental effects on air quality and public health. It releases toxic emissions, including dioxins, particulate matter, carbon monoxide, nitrogen oxides, and other acidic gases. These toxins can cause respiratory issues and disrupt neurodevelopment, endocrine, and reproductive functions. Additionally, incineration contributes to greenhouse gas emissions, further exacerbating climate change.
Another concern with plastic incineration is the generation of microplastics. Studies have found that bottom ash, a solid residue from incinerators, contains microplastics that can be released into the environment. This indicates that incineration does not completely eliminate plastic waste and may contribute to the ubiquitous presence of microplastics worldwide.
Furthermore, incineration competes with local recycling systems for plastic waste. Incinerator companies have an incentive to keep plastic in the waste stream rather than implement strategies to reduce, reuse, or recycle plastic. This dynamic can hinder efforts to promote recycling and reduce plastic consumption.
While incineration can play a role in waste management, particularly in areas lacking solid waste collection services, it should not be considered a primary solution to the plastic waste crisis. Instead, the focus should be on reducing plastic production, improving recycling infrastructure, and promoting circularity by reusing and recycling plastics.
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Plastic pollution
The plastic that is recycled is often downcycled, meaning it is turned into a lower quality material that cannot be recycled again. This process can create microplastics, which contribute to water contamination and enter the food chain, with harmful effects on human and animal health. Furthermore, the transportation of plastic waste also contributes to pollution as plastic easily escapes into the environment during transport and the vehicles and fuels used emit hazardous air pollution and greenhouse gases.
The plastic industry has been accused of greenwashing, or misleading the public about the recyclability of their products, to shift the blame for plastic pollution onto consumers. To address plastic pollution, it is crucial to reduce plastic production and consumption, develop better recyclable products, and implement effective waste management techniques. Circularity, which involves reusing, recycling, or employing reusable and recyclable alternatives, is a promising approach that aims to imitate the natural world where there is no waste.
While recycling may not be a perfect solution, it is still worth doing for certain types of plastic and other materials like metals and paper. However, the onus should not be solely on individuals to recycle properly; producers of plastic need to be held accountable for the damage their products cause and take responsibility for finding solutions to the plastic pollution crisis.
To combat plastic pollution, a United Nations treaty with over 170 participating countries is in the works, aiming to end plastic pollution. Additionally, countries like Ghana are working to establish a circular economy for plastic, involving the gradual banning of single-use plastics and the implementation of robust collection, reuse, and recycling efforts. These efforts provide hope that a future with less plastic pollution is possible.
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Frequently asked questions
Only 5 to 9% of plastic waste produced globally is recycled. The rest ends up in landfills, is burned, or reaches the sea. Therefore, it is likely that your plastic is not being recycled.
Plastic is not designed to be recycled. It is expensive to collect and sort, and there are thousands of different types that cannot be melted down together.
Ensure that your plastic is clean and free of food residues. Only good-quality plastics can go through the recycling process.
You can try to reuse or repurpose your plastic items. Alternatively, you can support companies that use sustainable alternatives to plastic.
Over 170 countries are working on a United Nations treaty to end plastic pollution. Some countries, like Ghana, are also working to establish a circular economy for plastic, which involves banning single-use plastics and implementing robust collection, reuse, and recycling efforts.
