Maya Ellison
Plastic pollution is one of the greatest threats to ocean health worldwide. It is estimated that between 4 and 12 million metric tons of plastic enter the ocean each year, with most of it coming from rivers. This plastic pollution has a detrimental impact on marine ecosystems, with animals mistaking small, colorful microplastics for food, leading to the ingestion of toxic chemicals and digestive blockages. To address this issue, various organizations are taking initiatives to sanitize beaches and rivers, such as The Ocean Cleanup, which aims to remove 90% of floating ocean plastic by 2040. Additionally, local communities and individuals can make a difference by organizing or participating in beach cleanups and reducing their plastic consumption.
| Characteristics | Values |
|---|---|
| Methods | Beach cleanups, filtration systems, river interception technologies, trash wheels, trash fences, incineration for electricity |
| Organizations | The Ocean Conservancy, Surfrider Foundation, American Littoral Society, Ocean Blue Project, The Ocean Cleanup, Sea Turtles Forever, NOAA's Marine Debris Program |
| Impact | Marine ecosystem, wildlife, food chain, community health, human neurological development |
| Prevention | Reduce plastic use, reuse and recycle items |
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What You'll Learn
Microplastics filtration systems
Microplastics are toxic and detrimental to marine life and the environment. They are often mistaken for food by marine animals, leading to the introduction of toxic chemicals into their digestive systems and causing blockages. They can also carry pollutants such as PCBs and DDT, which have been linked to neurological issues in children.
To address this issue, several organizations and individuals have developed microplastics filtration systems to sanitize beaches. One such system is the Microplastic Filtration System developed by Sea Turtles Forever, a conservation group. This system, designed by Marc W. Ward, resembles a stretcher with a flour sifter. It utilizes a fine mesh stretched between two long poles, allowing sand to fall through while catching microplastics and other debris. The mesh is statically charged to attract and capture plastic particles as small as 100 micrometers.
Another example is the Hoʻola One machine, designed by engineering students from the Université de Sherbrooke in Québec, Canada, in collaboration with the University of Hawaiʻi at Hilo and the Hawaiʻi Wildlife Fund. Hoʻola One, meaning "bring life back to the sands" in Hawaiian, is specifically designed to filter out microplastics from beach sediments while letting natural sand and rocks pass through. The machine operates like a large vacuum cleaner, sucking up sand and debris, which are then separated from the plastic in a decanter filled with seawater. The plastic floats to the top, while the sand and rocks sink to the bottom, allowing for their return to the beach.
In addition to these efforts, organizations like The Ocean Cleanup are working to rid the oceans of plastic waste. They aim to remove 90% of floating ocean plastic by 2040 through ocean cleanup systems and river interception technologies. Their projects include tackling pollution in 1000 rivers worldwide and cleaning up the Great Pacific Garbage Patch, emphasizing the importance of preventing new trash from entering the oceans.
These microplastics filtration systems and cleanup initiatives are crucial steps towards restoring beach and ocean ecosystems, protecting marine life, and ensuring a safer environment for future generations.
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Beach cleanups
Every year, tens of thousands of volunteers worldwide participate in beach cleanups, with the largest effort conducted annually by the Ocean Conservancy in September. Other notable organizations include The Ocean Cleanup, which aims to remove 90% of floating ocean plastic by 2040 through the development and scaling of ocean cleanup systems and river interception technologies.
To sanitize plastic from beaches, unique screen filtration systems have been developed, resembling a cross between a medical stretcher and a flour sifter. This system allows dirty sand to be piled onto a sheet of fine mesh, with the mesh catching plastic and other foreign materials while letting the sand fall through.
While beach cleanups provide a temporary solution to the problem of marine pollution, they are essential in combating the growing presence of plastic waste in our oceans and raising public awareness about the threat of debris.
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River interception technologies
The Interceptor uses a barrier to funnel rubbish towards a floating processing plant. The trash is then passed up a conveyor belt and deposited into bins, which are later emptied by a boat for recycling. This technology has been successfully deployed in several countries, including Malaysia, Indonesia, Vietnam, the Dominican Republic, and the USA.
The Interceptor comes in different models to suit various river conditions. The Interceptor Original is designed for series production and has a large cleaning capacity, making it the primary technology evaluated for new river projects. Another variation is the Interceptor Barricade, which consists of two booms, one upstream and one downstream, to maximize the capture of plastic waste. The Interceptor Guard, suited for shallow waters, can be used in combination with the Interceptor Barrier to prevent trash from drifting too far.
In addition to The Ocean Cleanup's Interceptor, other river interception technologies are also making an impact. Mr. Trash Wheel and its subsequent iterations, Professor Trash Wheel and Captain Trash Wheel, are solar and hydro-powered machines that collect plastic trash in Baltimore's rivers. Blue Barriers, developed by Italian engineer Fabio Dalmonte, are sustainable and low-cost barriers that efficiently block river trash. These technologies, along with many others, are crucial in preventing plastic pollution in oceans by intercepting it in rivers.
By focusing on the 1000 most polluting rivers, organizations like The Ocean Cleanup aim to halt a significant amount of riverine pollution from reaching the oceans. With their Interceptor technology and other innovative solutions, they strive to make a substantial impact in a relatively short amount of time. These river interception technologies are a vital step in addressing the global crisis of plastic pollution and protecting marine wildlife, ecosystems, and human health.
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Reducing plastic consumption
Plastic pollution on beaches is a pressing issue, and while cleaning it up is important, reducing plastic consumption is a more effective long-term solution. Here are some ways to achieve this:
Reduce, Reuse, and Recycle
The famous "three Rs" of waste management are an excellent guiding principle for reducing plastic consumption. Reducing plastic usage is the first step, and this can be achieved by opting for reusable alternatives to single-use plastics. Reusable water bottles, coffee cups, shopping bags, and food containers are all examples of how one can reduce their reliance on single-use plastics. Reusable items often need to be cleaned after use, but this small action has a significant positive impact on the environment.
Avoid Microplastics
Microplastics are tiny plastic particles that can be found in a variety of products, including cosmetics, clothing, and even some foods. These particles can be released into the environment during production, use, or disposal, and they often end up in oceans and beaches. To reduce consumption of microplastics, one can opt for natural alternatives such as wooden brushes, lipsticks without microplastics, or clothing made from natural fabrics.
Support Sustainable Businesses
Another way to reduce plastic consumption is to support businesses that prioritize sustainability and plastic reduction. This can include buying from local businesses that offer refillable or package-free goods, or choosing products with minimal or recyclable packaging. Supporting these businesses encourages a shift towards more sustainable practices and reduces the demand for plastic packaging.
Refuse Single-Use Plastics
Single-use plastics are a major contributor to plastic pollution on beaches. Refusing these products whenever possible is an effective way to reduce consumption. This can include refusing plastic straws, disposable cutlery, and plastic bags. Carrying your own reusable alternatives ensures you don't have to rely on single-use options and allows you to refuse them when offered.
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Recycling
The first step in recycling plastic collected from beaches is to separate the different types of plastic into their respective recycling streams. This ensures that the plastic waste is processed correctly and can be recycled effectively. Once sorted, the plastic waste is packaged and sent to recycling facilities onshore. At these facilities, the plastic waste is further processed and recycled into new products.
However, it is important to note that not all plastic waste can be recycled. Some plastics are too contaminated or damaged to be recycled and must be disposed of properly. In addition, the recycling process itself can be energy-intensive and may contribute to environmental concerns if not managed correctly. As such, it is important to focus on reducing plastic consumption and properly disposing of plastic waste to prevent it from ending up on beaches and in the ocean in the first place.
One way to reduce plastic consumption is to opt for reusable alternatives to single-use plastic items. For example, instead of using disposable water bottles, one can use a reusable water bottle. Similarly, reusable shopping bags can replace single-use plastic bags. Reducing the use of disposable and single-use plastic items can significantly decrease the amount of plastic waste generated.
Participating in beach clean-up efforts is another direct and rewarding way to address plastic pollution. Individuals can organize or join local community clean-up initiatives to collect plastic waste from beaches and waterways. Additionally, unique technologies, such as microplastics filtration systems, can be employed to separate and remove microplastics from beach sand, leaving it clean and free of plastic litter. These filtration systems utilize a fine mesh that catches plastic particles while allowing sand to fall through, effectively sanitizing the beach of plastic contaminants.
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Frequently asked questions
You can organize or participate in a cleanup of your local beach or waterway. You can do this on your own or with friends or family, or you can join a local organization’s cleanup or an international event like Global Ocean Cleanup or the International Coastal Cleanup.
Yes, The Ocean Cleanup, a Dutch nonprofit, is developing and scaling technologies to rid the oceans of plastic. Their system consists of a large floating net-like barrier that is slowly towed by two ships. The natural flow caused by the movement directs plastic to the central retention zone, which is emptied onto one of the ships' decks weekly.
Microplastics are tiny pieces of plastic that can be found in sand on the beach or in the ocean. They come from the breakdown of larger plastics through extended exposure to the sun and impact with rocks or coarse sand during the movement of ocean waves. They can be harmful to the environment as animals can mistake them for food, leading to the introduction of toxic chemicals and digestive blockage in fish, seabirds, and turtles.
