Helena Joyce
Plastic pollution is a pressing environmental issue, with plastic bags being a significant contributor. Plastic bags have become a major component of urban solid waste, leading to detrimental effects on the environment, including animal choking, pollution, blockage of channels, rivers and streams, and landscape disfigurement. While plastic bags are commonly used, they can take up to 1,000 years to degrade in landfills, and even then, they do not break down completely but instead photodegrade into microplastics. These microplastics absorb toxins and continue to pollute the environment, finding their way into our food and water systems and potentially impacting human health. The widespread use of plastic bags and their persistence in the environment highlight the need for urgent action to address this global pollution epidemic.
| Characteristics | Values |
|---|---|
| Percentage of plastic waste ever recycled | 9% |
| Percentage of plastic waste incinerated | 12% |
| Percentage of plastic waste accumulated in landfills, dumps, or the natural environment | 79% |
| Average time for a plastic bag to degrade in a landfill | 1,000 years |
| Number of plastic grocery bags and other plastic bags collected in the 2018 International Coastal Cleanup | 1.9 million |
| Number of countries that have adopted some form of legislation to regulate plastic bags | 127 |
| Number of US cities that have banned plastic bags | Dozens |
| Number of countries in Africa that have banned the production and use of plastic bags | Most |
| Average lifespan of single-use plastic bags | Minutes to hours |
| Estimated amount of plastic consumed by people globally per week | Equivalent of a credit card |
| Estimated amount of plastic in the sea by 2050 | More than fish |
| Percentage of plastic produced annually that is single-use | 40% |
| Number of tons of plastic waste that escape into the oceans from coastal nations annually | 8 million |
| Percentage of plastic waste that is not recycled | 91% |
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What You'll Learn
Plastic bags are commonly found in the environment
Plastic bags are also a significant and growing source of marine pollution. They get trapped along coastlines, producing environmental challenges that harm tourism, shipping infrastructure, energy production, fishing, and aquaculture. Plastic bags in the ocean are an increasing source of contaminants, either introduced during processing or absorbed from the atmosphere. Compounds leaching from plastic bags have been linked to increasing levels of toxicity.
The plastic used in bags often contains chemical additives associated with negative health effects, including endocrine disruptors, which have been linked to cancers, birth defects, and immune system suppression in humans and wildlife. When plastic bags break down in landfills, they become microplastics that absorb toxins and continue to pollute the environment. These microplastics impair the growth of important microorganisms like Prochlorococcus, a marine bacterium that provides one-tenth of the world's oxygen.
To address the issue of plastic bag pollution, some governments have implemented policies to reduce their use, with dozens of national and local governments adopting measures to limit disposable plastic. Africa stands out as the continent with the most countries that have banned the production and use of plastic bags. California became the first state to ban plastic bags in 2014, and as of March 2018, 311 local bag ordinances had been adopted in 24 states. Additionally, 127 countries have enacted legislation to regulate plastic bags as of July 2018. Individuals can also play a role by using reusable bags, supporting legislation to address plastic pollution, and advocating for responsible waste management practices.
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Plastic bag bans
Plastic bags are a major source of pollution. In a recent global survey, plastic bags were found to be one of the most common types of plastic waste in the environment, alongside bottles, bottle caps, food wrappers, drink lids, straws, and stirrers. Plastic bags are particularly harmful as they can clog sewers and provide breeding grounds for mosquitoes and pests, increasing the transmission of vector-borne diseases like malaria. They also break down into microplastics, which are consumed by marine life and end up in our food chain.
To combat this issue, many countries, local governments, and organizations have implemented plastic bag bans or regulations. As of July 2018, 127 countries have adopted some form of legislation to regulate plastic bags, with Africa being the continent where the most countries have adopted a total ban on the production and use of plastic bags.
In the United States, there is currently no national plastic bag fee or ban in effect. However, several states, including California, Colorado, Connecticut, Delaware, Maine, New Jersey, New York, Oregon, Rhode Island, Vermont, and Washington, have banned disposable bags, with varying levels of success due to plastic industry lobbying. Many counties and municipalities have also enacted ordinances imposing a fee on plastic bags or banning them. For example, all counties in Hawaii have banned plastic bags, effectively banning them statewide.
Some retailers have also taken it upon themselves to stop using plastic bags ahead of government mandates. Additionally, individuals can play a role in reducing plastic bag waste by bringing their own reusable bags when shopping and supporting legislation aimed at tackling the plastic pollution crisis.
Overall, the movement towards banning or regulating plastic bags is a crucial step in addressing the global plastic pollution crisis and protecting our environment and health.
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Plastic bag waste in oceans
Plastic bag waste is a significant contributor to ocean pollution. While it is challenging to determine the exact percentage of plastic grocery bags in ocean pollution, it is clear that they make up a substantial portion of the plastic waste that ends up in our seas.
Every year, an estimated one to two million metric tons of plastic waste enter our oceans, with eight million tons being a previous estimate. This waste includes plastic bags, bottles, bottle caps, food wrappers, drink lids, straws, and stirrers. Rich countries produce the most plastic waste per person, but it is the mismanagement of waste in poorer countries, particularly in Asia, that contributes most to ocean plastics. Inadequate waste management infrastructure in low- to middle-income countries means that plastic waste is not properly recycled, incinerated, or disposed of in sealed landfills, leading to environmental pollution and, ultimately, ocean pollution.
Plastic bags specifically pose a significant threat to marine life. Sea turtles, for example, struggle to distinguish between jellyfish and floating plastic bags, often ingesting the plastic with fatal consequences. Fish eat thousands of tons of plastic annually, transferring it up the food chain to larger fish and marine mammals. These microplastics are then consumed by people, with studies showing that people ingest the equivalent of a credit card's worth of plastic every week.
The impact of plastic bag waste in oceans is not limited to marine ecosystems. Plastic waste can clog sewers and provide breeding grounds for mosquitoes, increasing the transmission of vector-borne diseases like malaria. Furthermore, chemical leachates from plastic bags impair the growth of Prochlorococcus, a marine bacterium that provides one-tenth of the world's oxygen.
Addressing the issue of plastic bag waste in oceans requires a multifaceted approach. Implementing waste collection and recycling programs globally can not only reduce ocean plastic pollution but also improve public health and reduce emissions. Supporting the development of fundamental waste management systems in countries with rapidly growing economies and increasing disposable plastic usage is crucial. Additionally, reducing the production and use of single-use plastics, improving product design, and holding plastic producers accountable for their waste are essential steps toward mitigating plastic bag waste in our oceans.
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Plastic bag waste ingestion by animals
Plastic pollution is a pressing issue, with global plastic pollution jumping from two million tonnes in 1950 to 348 million tonnes in 2017. It is projected to double by 2040. This plastic waste ends up in landfills, dumps, or the natural environment, including the oceans.
Northern fulmars, which gather food by flying with their beaks open above the water surface, almost always have plastic in their stomachs. In one instance, a sperm whale that washed up in Indonesia had 115 cups, 25 bags, four bottles, and two slippers in its stomach. The plastic weighed six kilos in total.
Plastic ingestion can block animals' digestive tracts, pierce internal organs, and choke them. It can also lead to a reduced feeling of hunger, causing animals to eat less and weaken. Larger pieces of plastic can obstruct the gastrointestinal tract, preventing the animal from excreting the plastic. This results in a slow and painful death.
Plastic bags can take up to 1,000 years to break down, and even then, they do not fully decompose but instead become microplastics, which continue to pollute the environment. Animals that ingest these microplastics can suffer liver and cell damage, as well as disruptions to their reproductive systems.
To address this issue, many governments have adopted policies to reduce disposable plastic use, with Africa leading the way in banning plastic bags. Individuals can also play a role by reusing bags, supporting legislation to regulate plastic bags, and pressuring companies and local authorities to reduce plastic waste.
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Plastic bag recycling
Plastic pollution is a pressing issue, with plastic waste accumulating in landfills, dumps, and the natural environment, including oceans. Plastic bags are a significant contributor to this pollution, as they do not biodegrade and can take up to 1,000 years to degrade in a landfill, breaking down into microplastics that continue to pollute. Marine life often mistakes plastic bags for food, leading to the transfer of microplastics up the food chain to humans.
Recycling plastic bags is an essential step in mitigating this issue. Most plastic bags are made from high-density polyethylene (#2 plastic) or low-density polyethylene (#4 plastic). To recycle them, ensure they are empty of any foreign objects like receipts or crumbs, as these can contaminate the recycling load. Keep a bag collection bin in your home, such as a large garbage bag, and aim to reuse these bags whenever possible. For example, you can wash and dry reusable bags to extend their lifespan.
When recycling, check with your local program, as some accept plastic bags in curbside collections, while others do not. Many national and regional grocery retailers, such as Kroger, Safeway, Target, and Walmart, offer bag recycling collections in their stores, often located near the front entrance. Black plastic bags are harder to recycle due to the dye used, and some store bins may not accept them.
Once collected, plastic bags are chipped into pellets, which can be reprocessed into new bags or used to create synthetic lumber for decking or park benches. Recycling a ton of plastic bags saves 11 barrels of oil. While recycling is important, the most eco-friendly alternative is to bring your own reusable bags when shopping, as these last longer and have a lower environmental impact.
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Frequently asked questions
It is difficult to accurately state the percentage of plastic grocery bag pollution in the world, but it is clear that plastic bags are a significant contributor to the global pollution crisis.
An estimated 8 million tons of plastic waste enter the oceans annually, with plastic bags being a major contributor.
Plastic bags have detrimental effects on the environment, including animal choking, pollution, blockage of channels, rivers, and streams, and landscape disfigurement. They also release toxic substances into the soil and air when exposed to sunlight or burned.
Plastic bags can take up to 1,000 years to degrade, breaking down into microplastics that continue to pollute the environment.
Many governments and local authorities have implemented single-use plastic bans or fees, specifically targeting plastic bags. Individuals can also play a role by reusing bags, supporting legislation, and advocating for sustainable alternatives.
