Omar Khalid
Plastic recycling is critical to improving the environment and bettering waste management solutions. While almost all plastic can be recycled in theory, in practice, there are several barriers to this process. For instance, many items are made of multiple types of plastic and different layers, making separation difficult and costly. Additionally, some plastics are not accepted by community recycling programs, and small quantities of certain plastics can make recycling non-economical. To determine which plastics to recycle, individuals should check the resin number, usually contained in a triangle, to identify the type of plastic and whether it is accepted by their local recycling program. It is also important to ensure that plastics are not contaminated by food or other substances, as this can make them unfit for reuse.
| Characteristics | Values |
|---|---|
| Plastic types | 7 different types of plastic are used around the world, including HDPE, PET, polyvinyl chloride, and polypropylene |
| Recyclability | Almost all plastic can be recycled in theory, but in practice, there are economic, environmental, and technical barriers |
| Contamination | Plastics contaminated by food or other substances may not be clean enough to recycle |
| Local programs | Local recycling programs may accept specific types of plastic, such as numbers 1, 2, and 5 |
| Plastic bags | Plastic bags and thin films are not accepted in residential recycling bins as they can cause equipment issues |
| Compostable plastic | Compostable plastics should not be mixed with non-compostable plastics and require separate disposal methods |
| Symbols | Resin numbers inside triangles help identify the plastic type and whether it can be recycled locally |
| Separation | Items with multiple types of plastic or layers are difficult and costly to separate for recycling |
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What You'll Learn
Check local recycling programs
The type of plastics that can be recycled depends on your local recycling program. Local recycling programs vary, and some facilities may recycle certain types of plastics that others do not. For example, some facilities recycle polypropylene (number 5), the plastic commonly used in yogurt containers.
It is important to check with your local recycling program to see which types of plastics it accepts. Some localities accept styrofoam in curbside recycling, while others do not. Some localities may also have specific drop-off locations for certain types of plastic. For example, some local grocery and department stores accept plastic bags and plastic wrap/film for recycling.
Recycling symbols can help you determine whether an item is recyclable by your local program. These symbols indicate the type of plastic used to make the container. However, this symbol does not necessarily mean that your community will collect it for recycling.
It is also important to note that some items, such as plastic bags, should not be put into recycling bins, as they can get tangled in the equipment at recycling facilities. Additionally, items contaminated by food or other substances may not be clean enough to be recycled.
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Identify plastic types
There are seven different types of plastic used around the world, which differ in size, colour, usage, and disposal. However, not all types of plastic are accepted by community recycling programs. The safest rule to follow is to only recycle number 1 and 2 plastics, which can be placed in standard recycling bins. Other types of plastic may not be permitted in your bin, depending on your municipality's guidelines.
To identify the type of plastic, look for the resin number, which is contained in a triangle that looks similar to the recycling symbol. This symbol can help you determine whether the item is recyclable by your local program. However, it is not a guarantee that it can be collected for recycling in your community.
Some types of plastic are harder to recycle and may require specialized handling, such as Styrofoam, shrink wrap, and manufacturing scrap. Plastic bags, including grocery and produce bags, should also not be placed in recycling bins as they can get tangled in the equipment at recycling facilities.
It is also important to note that plastics can be contaminated by food and other substances, making them non-recyclable. Always ensure that containers are clean and free of food debris before placing them in the recycling bin.
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Avoid contamination
Recycling contamination occurs when non-recyclable material or garbage ends up in the recycling system. For example, if you are putting all of your recyclables in plastic bags, the plastic bag would be considered a contaminant because it is not accepted in the recycling program. Even recoverable materials, like plastics and paper products, can act as contaminants if they are placed in the wrong recycling container.
To avoid contamination, it is important to separate your recyclables and only put them in the correct recycling container. For instance, only put paper products in the blue side (or blue carts) and glass, plastic, and metal containers in the brown side (brown cart). If you are unsure about an item, it is recommended to ask an expert.
Food residue, such as oil and grease, can also contaminate recyclables. Rinsing and wiping containers to remove food residue will help to ensure that the material can be recycled into its highest and best use. However, it is not necessary to deep-clean recycled items—a simple rinse is sufficient.
Another way to avoid contamination is to keep your bins together. Having trash, recycling, and other streams all in one place will help people make the right recycling choices and reduce contamination.
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Understand recycling economics
Recycling plastics is a complex process that involves various economic considerations. While the specific recycling practices may vary across different regions, understanding the economics of plastic recycling is essential for promoting environmental sustainability and responsible waste management. Here are some key aspects of recycling economics:
Economic Incentives for Recycling
The economics of plastic waste management plays a crucial role in encouraging or discouraging recycling practices. The recycling sector offers significant economic benefits, including job creation and economic growth. For example, in South Carolina, the recycling industry generates a $13 billion economic impact and provides over 54,000 jobs. Similarly, the reuse sector in Minnesota employs nearly 46,000 people and contributes more than $4 billion in gross sales annually. These economic incentives highlight the potential for economic development through recycling and upcycling initiatives.
Cost Considerations
The cost of recycling plastics can be a significant factor in the economics of the process. Recycling facilities are expensive to build and operate, requiring a high volume of plastic waste to be treated daily to remain profitable. Small quantities of plastic waste may not be economically feasible to recycle due to low efficiencies and high costs. Additionally, the cost of refining and purchasing recycled plastic is generally higher than that of new plastic. However, when oil prices increase, the cost of new plastic, being a petroleum product, also rises, making recycled plastic a more attractive option for manufacturers.
Market Dynamics
The market dynamics of plastic waste management and recycling are intricate and interconnected. The shift towards biodegradable plastics and the development of sustainable alternatives are driven by economic incentives and environmental concerns. Regulatory policies and instruments can play a pivotal role in incentivizing recycling, ensuring the financial viability of collecting and recycling plastic waste. For instance, a law passed in New Jersey in 2022 mandates an increasing use of recycled materials in beverage bottles, aiming for 50% by 2044. This legislative push has spurred initiatives to explore new ways to utilize recycled plastic, such as using recycled material for 3D printing.
Profitability and Demand
The profitability of the recycling industry is influenced by various factors, including oil prices and international trade policies. When oil prices are low, the demand for recyclables decreases as petrochemical companies, which produce plastics, rely less on recycled materials. Additionally, the decision to recycle certain plastics may depend on whether waste management companies can profit from them. The recycling sector faces challenges due to restrictions on imported recyclables and changes in global demand, such as China's decision to stop importing recyclable waste in 2018.
Supply Chain and Infrastructure
The economics of plastic recycling is closely tied to the supply chain and infrastructure supporting the process. The supply chain for recycled plastic is often described as immature and unstable, impacting the availability and stability of supply. This instability can create challenges in meeting legislative requirements and implementing sustainable practices. To address these challenges, researchers are working on tracking and analyzing recycling habits to improve market forecasts and design more effective policies and platforms for recycling.
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Reduce plastic use
Reducing plastic use is an important step towards a more sustainable lifestyle. Here are some ways to reduce your plastic consumption and waste:
Reusable Alternatives
Single-use plastics are a major contributor to plastic waste. Make a conscious effort to replace disposable items with reusable alternatives. For example, instead of using plastic bags, bring your own tote bags when shopping. Carry a reusable water bottle instead of buying bottled water, and opt for reusable silverware, cups, and containers. These simple swaps can significantly reduce your plastic waste over time.
Buy Recycled Products
When making purchases, look for products made from recycled plastic materials. From household items to packaging materials, many products are now available with recycled content. By choosing these options, you support the recycling industry and help create a demand for recycled plastics.
Reduce, Reuse, and Repair
Before buying new plastic items, consider if you can reduce your consumption or reuse existing items. For example, instead of buying new containers, repurpose and reuse old containers, jars, or bottles. When items break, try repairing them instead of automatically replacing them. This not only reduces plastic waste but also saves you money.
Buy in Bulk and Avoid Overpackaging
Single-serving plastic packaging generates unnecessary waste. Whenever possible, buy products in bulk and store them in reusable containers at home. Choose products with minimal or no plastic packaging. Opt for fresh produce and whole ingredients instead of pre-packaged foods. This reduces the amount of plastic waste associated with individual servings.
Support Local Thrift Stores and Second-Hand Markets
Purchasing second-hand items made from plastic, such as toys, electronics, or appliances, helps reduce the demand for new plastic products. It also gives pre-owned items a new lease of life, preventing them from ending up in landfills. Consider donating or selling your unwanted plastic items instead of discarding them.
Avoid Microplastics
Microplastics are tiny plastic particles that can be released into the environment through various sources, including synthetic clothing fibres and car tires. To reduce microplastic pollution, opt for natural fibre clothing and rugs, and consider reducing your car usage. When washing synthetic fabrics, air-dry them instead of using a dryer to minimise the release of microplastics.
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Frequently asked questions
The safest rule to stick to is only recycling number 1 and 2 plastics. However, some facilities recycle other types of plastics, such as polypropylene (number 5). Check the resin number inside the triangle on the plastic, which indicates the type of plastic and whether your local program accepts it.
The majority of recycled plastic comes from post-consumer sources, such as milk jugs, bottles, and packaging films. HDPE products, such as detergent bottles, are also commonly recycled.
Plastic bags, plastic wrap/film, and thin films should not be put into recycling bins as they can get tangled in the equipment at recycling facilities. Other non-recyclable plastics include bioplastics, composite plastic, plastic-coated wrapping paper, polycarbonate, and cling film.
Check with your local recycling program or government to see which types of plastics they accept. Some websites, such as Earth911, can also provide information on local recycling options.
