Chloe Zhang
The Ocean Cleanup is a non-profit organisation that aims to rid the oceans of 90% of plastic by 2040. Its plastic cleanup system consists of a large floating net-like barrier that forms a U-shape and is slowly towed by two ships. The natural flow of the movement directs plastic to the central retention zone, which is emptied every four days or once a week. The collected plastic is then sent to recycling facilities onshore. The Interceptor, a solar-powered automated system designed to capture and extract waste, is another technology used by The Ocean Cleanup to intercept plastic in rivers and halt its inflow into the oceans. While the organisation has faced criticism regarding the feasibility and potential harm to marine life, it continues to adapt and refine its technologies to address the growing problem of plastic pollution.
| Characteristics | Values |
|---|---|
| Name | The Ocean Cleanup |
| Type of Organization | Non-profit |
| Objective | Remove 90% of plastic from oceans by 2040 |
| Strategy | Dual: intercepting plastic in rivers and cleaning up what has accumulated in the ocean |
| Current Technology | System 03 |
| Technology Features | Deterrents, cameras, escape aids, and other features to minimize risk to marine wildlife |
| Technology Performance | Net Environmental Benefit Assessment showed benefits outweighed potential environmental costs |
| Technology Cost | Estimated $7.5 billion to clean GPGP in 10 years |
| Technology Expansion | In 2021, began expanding Interceptor systems to tackle a wider range of rivers |
| Technology Concerns | Potential harm to marine life, focus on old plastic instead of microplastics, carbon emissions, and feasibility |
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What You'll Learn
The Ocean Cleanup's goal
The Ocean Cleanup is a non-profit organisation with the goal of ridding the oceans of 90% of plastic by 2040. It aims to do this through the development and scaling of technologies designed to clean up the ocean and intercept river pollution.
The Ocean Cleanup's first system proved ineffective when plastic was able to escape its barriers, and a part broke off due to winds and waves. The organisation has since refined its design, with its more successful current iteration removing 220,000 pounds of plastic from the Great Pacific Garbage Patch, a plastic accumulation zone with over 100,000,000 kilograms of plastic. The Ocean Cleanup's system consists of a large floating net-like barrier that forms a U-shape and is slowly towed by two ships. The natural flow of the ships' movement directs plastic to the central retention zone, which is emptied weekly. The plastic is then separated into different recycling streams, packaged, and sent to recycling facilities onshore.
The Ocean Cleanup is also working on intercepting plastic in rivers to cut the inflow of pollution into the oceans. The Interceptor is a solar-powered, automated system designed to capture and extract waste from rivers. It uses a barrier and conveyor belt system to guide rubbish into bins, which are then emptied by local operators and sent to waste management facilities. The Interceptor project has been expanded to tackle a wider range of rivers.
While The Ocean Cleanup has received attention for its efforts, some critics argue that its methods could do more harm than good. Concerns have been raised about the potential impact on marine life, including the neuston ecosystem, and the use of fossil fuel-powered ships. The Ocean Cleanup maintains that its system includes features to minimise risk to marine wildlife, such as escape aids and underwater cameras. It also states that it offsets its emissions and is experimenting with biofuels.
Overall, The Ocean Cleanup aims to address the global crisis of plastic pollution in the oceans through the development and deployment of innovative technologies. By taking a step-by-step approach, the organisation aims to scale its systems gradually while improving its technology.
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The Interceptor project
The Interceptor Original, the first river cleanup technology introduced by The Ocean Cleanup, is a high-tech, scalable solution. It relies on natural forces, such as river currents and solar power, to extract debris flowing through rivers. The system is designed for series production and can adapt to a wide range of river conditions. However, The Ocean Cleanup also recognises that a single solution may not be sufficient for all rivers, so they are developing a family of Interceptor solutions, including the Interceptor Barrier, the Interceptor Tender, the Interceptor Barricade, and the Interceptor Guard. This toolkit approach allows them to apply the most effective solution for each specific river location.
The Interceptor itself is an automated system that uses a barrier to guide rubbish towards its opening. The rubbish is then transported via a conveyor belt to a shuttle, which evenly distributes the waste into one of six bins. Local operators are notified when the bins are almost full, and they empty the waste, sending it to local waste management facilities. The Interceptor project draws inspiration from smaller-scale initiatives like Mr. Trash Wheel, developed in 2008 for Baltimore Harbor.
The Ocean Cleanup has deployed Interceptors in various locations, including Indonesia, Malaysia, the Dominican Republic, and the Klang River in Jamaica. These Interceptors have successfully intercepted significant amounts of waste, with one Interceptor in the Dominican Republic removing 10,000,000 kg of trash from the river in its first year. The Interceptor project is a critical component of The Ocean Cleanup's overall goal to remove 90% of floating ocean plastic by 2040 and address the global crisis of plastic pollution.
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Concerns about feasibility
The plastic clean-up system, also known as The Ocean Cleanup, is a nonprofit environmental engineering organization that develops and deploys technology to extract plastic pollution from the oceans and capture it in rivers before it reaches the ocean. The Ocean Cleanup's system consists of a large, floating, net-like barrier that forms a U-shape and is slowly towed by two ships. The natural flow caused by the movement directs plastic to the central retention zone.
While the idea of using passive systems to rid the world's oceans of plastic has been around since 2012, there are several concerns about the feasibility of such a system. Firstly, there is a lack of data on spatiotemporal litter density, as well as capital and maintenance costs, which limits the ability to clearly evaluate the cost-efficiency of clean-up technologies. For example, the estimated investment, operational and management costs for Seabins are 1.24-1.55 USD/kg of plastic, while for booms, it is 22.5-30.1 USD/kg of plastic. This cost is expected to be lower in urban areas.
Secondly, there are concerns about the environmental impact of clean-up technologies. Unregulated clean-up technologies may be inefficient and have unintended negative consequences on ecosystems, such as through bycatch or the removal of organic matter important for ecosystem functions. For example, there are worries that The Ocean Cleanup's system will harm marine life, including neustons, communities of pleustons, Portuguese man-of-war, sea snails, and sail jellyfish that live near the ocean surface.
Thirdly, there is a concern that clean-up technologies distract the public and decision-makers from upstream source-reduction strategies, misrepresenting that plastic pollution can be mitigated solely through downstream approaches. This concern highlights the need for systemic change, including banning single-use plastics, promoting recycling, and fostering sustainable practices, in addition to clean-up efforts.
Finally, there are logistical challenges, particularly in remote locations, that affect the feasibility of clean-up operations. These challenges include isolation, heavy plastic pollution, and the need for careful planning, local engagement, and innovative technologies to balance the benefits of cleanup with the potential costs.
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System 001/B design
The Ocean Cleanup is a non-profit organization that has been researching, extracting, and monitoring plastic pollution in oceans and rivers globally for over ten years. The organization's System 001/B design is an evolution of their first cleanup system, System 001, which was deployed in the Great Pacific Garbage Patch in 2018.
System 001/B was designed, assembled, and launched in less than four months, and deployed for testing in the Great Pacific Garbage Patch in June 2019. It is a passive collection apparatus that works by moving with the ocean's currents, taking advantage of the water's circular movement patterns, or gyres, that cause trash to accumulate. The system's modularity allowed the team to test multiple modifications aimed at improving plastic retention, including speeding up and slowing down the system, varying the underwater skirt, and adjusting the placement of the skirt to reduce loads on the HDPE floater.
One of the main technical challenges with System 001/B was plastic overtopping the cork line that kept the new screen design afloat. This issue was resolved by installing a larger cork line, successfully preventing plastic from crossing over the barrier and effectively retaining it within the system. The most consistent speed versus the plastic was achieved using the parachute anchor configuration.
System 001/B successfully captured and collected plastic debris, validating the core concept of The Ocean Cleanup's technology. The collected plastic was later transformed into sunglasses, with the proceeds helping to fund further cleanup efforts. While the passive technology of System 001/B worked, it did not meet the organization's scale-up ambitions, leading to the development of System 002, which will be large-scale and operational.
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The future of the cleanup
The Ocean Cleanup, a Dutch nonprofit, is currently leading the way in plastic cleanup systems. The organisation aims to remove 90% of floating plastic pollution in the ocean by 2040. Their system consists of a large floating net-like barrier that forms a large U-shape and is slowly towed by two ships. The natural flow caused by the movement directs plastic to the central retention zone.
The future of plastic cleanup systems looks promising, with The Ocean Cleanup continuing to improve its technologies and expand its operations. The organisation is developing advanced technologies, such as river interception methods, to tackle the problem at its source. Their latest system is 2,250 metres long, and they aim to deploy 10 or more systems to remove 50% of the debris in the Great Pacific Garbage Patch within five years.
However, there are some concerns about the potential impact of these systems on marine life. Some marine biologists believe that the current methods could do more harm than good, and there are worries about the potential harm to marine life, including an ecosystem called neuston, which floats on the ocean surface. There are also concerns about the carbon emissions produced by the fossil fuel-powered ships used in the cleanup process.
To address these challenges, The Ocean Cleanup is experimenting with biofuels and has implemented features to minimise harm to marine life, such as breathing ports and remote-controlled triggers to release trapped creatures.
Overall, the future of plastic cleanup systems holds promise, but it is essential to balance effectiveness with environmental considerations to ensure a positive impact on the ocean ecosystem. Additionally, fundamental and systemic changes are needed, including banning single-use plastics and improving waste management practices, especially in low-income countries.
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Frequently asked questions
The Ocean Cleanup is a non-profit organisation that aims to rid the oceans of 90% of plastic by 2040. The organisation has been researching, extracting and monitoring plastic pollution in oceans and rivers globally for over ten years.
The Ocean Cleanup's plastic cleanup system consists of a large floating net-like barrier that forms a large U-shape. This is slowly towed by two ships, which direct plastic to the central retention zone. The retention zone is then emptied onto one of the ships' decks, where the plastic is separated into different recycling streams, packaged, and sent to recycling facilities onshore.
The Ocean Cleanup's first collection system proved ineffective when plastic was able to escape its barriers and a part broke off due to winds and waves. However, its more successful current iteration has removed 220,000 pounds of plastic from the Great Pacific Garbage Patch. The organisation's System 03 is in the works, which is set to be three times bigger and will reduce the cost per kilogram of plastic collected. While some critics argue that The Ocean Cleanup's methods could do more harm than good, the organisation maintains that its systems are safe for marine life.
