Ethan Clarke
Plastic is one of the most popular and useful materials of modern times, with 300 million tonnes of plastic being produced annually. Despite the popularity of recycling, the process is not without its issues. While recycling is important, it is not enough to solve the plastic pollution crisis. Recycling rates in the west are stalling, and even when reused, refilled, or recycled, plastics are still dangerous, releasing chemicals, emissions, and microplastics into our bodies and the environment. The plastic that we put into our recycling bins is transported to a material recovery facility (MRF) where it is sorted and reprocessed into new materials. However, the transportation of plastic contributes to plastic pollution, as plastic easily escapes and enters the environment, breaking apart into plastic particles that enter our bodies.
| Characteristics | Values |
|---|---|
| Amount of virgin plastic produced worldwide | 8.3 billion tonnes |
| Percentage of plastic that has been recycled | 9% |
| Percentage of UK local authorities offering collection facilities for plastic bottles | 99% |
| Number of countries that passed measures to track and control the export of plastic waste to developing countries | 186 |
| Number of companies that have signed a global commitment to eliminate the use of single-use plastics by 2025 | 350+ |
| Amount of plastic packaging recycled in the U.S. in 2022 | 5 billion pounds |
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What You'll Learn
Plastic recycling rates
The EPA's data reveals that the recycling rates for specific plastic containers are more promising. For instance, the recycling rate for PET bottles and jars was 29.1% in 2018, while HDPE natural bottles achieved a rate of 29.3% in the same year. However, the overall picture is concerning, with 14.5 million tons of plastic in the containers and packaging category in 2018, making it the most significant contributor to municipal solid waste (MSW).
The US Plastics Pact aims to address this issue by working towards ambitious goals, such as making 100% of plastic packaging reusable, recyclable, or compostable by 2025. They also target recycling or composting 50% of plastic packaging and achieving 30% recycled content in plastic packaging by the same year. These efforts are vital as plastic pollution continues to increase, impacting the environment and straining raw materials.
To improve recycling rates, Germany, which has the highest recycling rate globally, has shown that separate waste collection for plastics results in recycling rates 80 times higher than mixed collection schemes. Additionally, addressing illegal and unofficial plastic dumping is crucial for transparency in data and understanding the true scope of plastic waste entering the environment.
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Recycling alternatives
Plastic is everywhere, and it is cheap to produce and profitable. However, it is having a devastating impact on the environment, with plastic waste ending up in landfills, waterways, and oceans, contributing to wildlife destruction and the accumulation of trash on beaches. While recycling is one way to address this issue, it is not a perfect solution. A Greenpeace report found that most plastic ends up in landfills, and even plastic that is put into recycling bins is often not actually recycled. The problem is further compounded by the increasing production of plastic and the difficulty and expense of collecting and sorting it for recycling.
With this in mind, let's explore some recycling alternatives:
Reusable and Refillable Packaging
The least problematic solution is to use reusable and refillable packaging or to buy unpackaged goods. This requires a shift in habits and behavior, such as bringing your own containers when shopping in bulk or choosing products with minimal or eco-friendly packaging.
Sustainable Materials
Choose products made from sustainable and biodegradable materials such as natural cloth, organic cotton, wool, hemp, bamboo, wood from sustainably managed forests, jute, cork, or pottery and ceramics. These materials can be used for a variety of items, including bags, clothing, household containers, utensils, and tableware.
Bioplastics
Bioplastics, or plant-based plastics, are biodegradable or compostable plastics made from natural substances instead of petroleum. They can be a greener alternative to fossil fuel-based plastic, especially for food packaging. However, it is important to note that most bioplastics require commercial composting facilities and can contaminate municipal recycling programs if not disposed of properly.
Coconut
Coconuts are highly adaptable and environmentally benign, with nearly every component of the fruit having an alternative use. They can be used to make combs, cutlery, bowls, mugs, and eco-friendly gift baskets.
Non-Liquid Soaps
Liquid soaps, shampoos, and detergents contribute significantly to plastic waste. Opting for bar soaps, shampoo bars, and powders packed in recyclable containers can reduce plastic waste.
Rubber
Most rubber products are designed to minimize their environmental impact. At the end of their useful life, tires can be recycled into goods that are better for the environment.
It is important to remember that simply replacing disposable plastic with another material is not enough. We need to reduce our overall consumption, reuse and recycle products whenever possible, and support sustainable alternatives to make a meaningful impact on the environment.
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Plastic waste transportation
The transportation of plastic waste can occur over short or long distances, following direct or convoluted paths. One of the primary goals of plastic waste transportation is to collect and consolidate waste from various sources, such as urban, coastal, and inland areas, and transport it to centralised locations for further processing or recycling. This process helps reduce the environmental impact of plastic waste by preventing its accumulation in landfills or natural environments, such as oceans, rivers, and beaches.
Various modes of transportation are utilised for plastic waste, including pipeline, truck, rail, and cargo ships. The choice of transportation mode depends on factors such as the quantity of waste, distance, and environmental considerations. For example, transporting plastic waste by rail can offer economic and environmental benefits, reducing logistics costs and greenhouse gas emissions compared to road transport. Additionally, as the demand for recycled plastic resin increases, using environmentally responsible shipping modes becomes crucial for meeting sustainability targets.
The complex life cycle of plastic waste, which includes sorting, processing, and transportation, is influenced by factors such as particle size, density, and buoyancy. These characteristics determine the transport pathways and mechanisms that sort and direct plastic waste to its ultimate fate in the environment. For instance, thick-walled, larger plastic debris from low-density polymers are more likely to be transported through river currents to the ocean, while smaller particles may be transported through stormwater discharges or wastewater treatment plant effluents.
Initiatives to improve the sustainability of transport and reclaim the value of plastic waste are also being explored. Some cities are implementing schemes that encourage recycling and provide incentives for commuters, such as Rome's public transport system, which allows customers to exchange recycled plastic bottles for discounted fares. Additionally, plastic waste is being used as an alternative fuel source for cargo ships, and innovations in road construction incorporate plastic waste into asphalt, reducing the reliance on crude oil and promoting the circular economy.
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Plastic recycling process
Plastic recycling is the process of plastic waste being converted into other products. It is a complex, reverse supply chain that often begins in households when an empty container is placed in a bin.
The first step in the recycling process is the collection of post-consumer materials from homes, schools, and other institutions by government or private companies. The next step is sorting, which is done by colour, thickness, usage, and chemical composition. Sorting is mainly done automatically, with a manual check to ensure all contaminants have been removed. The material is then washed to remove impurities such as food residue, adhesives, and labels. After washing, the plastic is shredded into small pieces or flakes. Shredding allows for the removal of more impurities, such as metals, and the shredded plastic can be used as additives or sold as a raw material.
The flakes are then washed again in hot water and detergent solution to remove surface dirt and any remaining adhesives. The flakes are then rinsed and air-dried. If the recycled material will be used for food packaging, it undergoes a decontamination process using vacuum and heat under low oxygen levels. The flakes are then melted in an extruder and turned into pellets or nurdles. These pellets are then sold to manufacturers to be made into new products.
Recycling plastic can reduce dependence on landfills, conserve resources, and protect the environment from plastic pollution and greenhouse gas emissions. However, it is important to note that not all plastic can be recycled, and some types still end up in landfills or are incinerated. Additionally, the recycling process can be complicated and expensive, and errors can lead to material with inconsistent properties.
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Plastic recycling demand
The demand for recycled plastic is increasing, driven by consumer sentiment, corporate commitments, anti-pollution regulation, access to funds, and new business models. The market demand for recycled plastic has shifted from a niche product to the new norm. However, there is a disconnect between demand and supply, with supply channels struggling to keep up with the surge in demand.
Several factors are driving the demand for recycled plastic. Firstly, there is a growing preference for sustainable materials, such as recycled and bio-based plastics, due to increasing environmental concerns. Governments and environmental agencies worldwide are implementing measures to reduce plastic pollution, promote recycling, and encourage the use of alternative materials, including recycled plastics. Additionally, corporations are setting voluntary targets around sustainability and increasing recycled content in their plastic packaging and products, which is driving demand worldwide due to their multinational presence.
The demand for recycled plastic is particularly high in the packaging industry, including consumer goods, food and beverage packaging, and electrical and electronics. Recycled PET is highly favoured in beverage and water packaging bottles due to its lightweight, non-toxic, easily recyclable, and durable characteristics. The construction industry is also contributing to the demand for recycled plastics, using them in the manufacturing of components such as insulation, fixtures, structural lumber, windows, and fences.
However, there are challenges to meeting the demand for recycled plastics. The quality standard of feedstock has been too low, and the cost base too high, hindering market demand. There is a need for significant improvement in the collection of plastic waste, as rates are low globally, and contamination is a limitation. The supply of recycled plastic is also influenced by the price of crude oil, as the decline in crude oil prices during the pandemic made virgin plastics more cost-competitive.
To meet the growing demand for recycled plastics, improvements in collection systems, sorting technologies, and waste management are necessary. Additionally, the development of advanced recycling technologies and infrastructure is crucial, along with partnerships and investments to support the scaling and maturation of these technologies.
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Frequently asked questions
Unfortunately, most plastic items collected for recycling are not actually recycled. Plastic is not designed to be recycled, and the process is expensive and complicated. It is also a health hazard, with microplastics being found in the human bloodstream.
These are resin codes, which are numbers between one and seven inside a small triangle made of arrows. Each number corresponds to a different type of plastic. For example, PET or PETE (number 1) is used for soda and water bottles, and HDPE (number 2) is used for milk jugs and shampoo bottles. PVC (number 3) is a soft, flexible plastic used for household products like tubing and toys. LDPE (number 4) is used for grocery bags and bread bags.
To address plastic pollution, those who produce plastics need to be held accountable and pay for the damage caused. The world also needs to reduce plastic production and develop more recyclable and sustainable alternatives.
