Anders Bekeken

The Ocean Cleanup: How We Showed the Oceans Could Clean Themselves

Geschreven op 10-10-2015 - Erik van Erne. Geplaatst in Afval, Duurzaam, Water Facebooktwitterredditpinterestlinkedintumblrmail

The Ocean Clean UpThe Ocean Cleanup develops technologies to extract, prevent, and intercept plastic pollution. The Ocean Cleanup’s goal is to fuel the world’s fight against oceanic plastic pollution by initiating the largest cleanup in history.

About 8 million tons of plastic enters the ocean each year. Part of this accumulates in 5 areas where currents converge: the gyres. At least 5.25 trillion pieces of plastic are currently in the oceans, a third of which is concentrated in the infamous Great Pacific Garbage Patch. This plastic pollution continues to do the following damage in the ages to come.

At least one million seabirds, and one-hundred thousand marine mammals die each year due to plastic pollution. The survival of more then 100 species, including the Hawaiian Monk Seal and Loggerhead Turtle, could be jeopardized by plastic debris. Plastic pollution is furthermore a carrier of invasive species, threatening native ecosystems .

Globally, plastic pollution causes at least US $13 billion of damage each year to industries that include fishing, shipping, tourism and the cleaning of coastlines. The US West Coast spends approximately US $500 million each year to clean up their beaches. The costs of removing debris from beaches is on average US $1,500, and up to US $25,000 per ton.

Toxic chemicals (including PCBs and DDTs) are adsorbed by the plastic, increasing the concentration a million times. After entering the food chain, these persistent organic pollutants bio-accumulate in the food chain, resulting in an even higher concentration of pollutants inside fish, including ones consumed by humans. Health effects linked to these chemicals are: cancer, malformation and impaired reproductive ability. Source: The Ocean Cleanup See also: The Ocean Plastic Cleanup of Boyan Slat by VPRO Backlight Documentary

See also: TEDxGreatPacificGarbagePatch: Living a Sustainable Life by Ed Begley Jr – TEDxGreatPacificGarbagePatch: The Economic Injustice of Plastic by Van Jones – TEDxGreatPacificGarbagePatch: The Ocean is Connected to Everything by Dr. Sylvia Earle –TEDxGreatPacificGarbagePatch: Tackling Our Nature Deficiency Disorder by David deRotschild – Can We Save Our Oceans from Plastic and Remove the Great Pacific Garbage Patch by CNN Eco Solutions – A Plastic Ocean: The Request? Rethink Plastic – The Great Pacific Garbage Patch Explained by The Ocean Cleanup

It had always been assumed that cleaning the oceans was impossible, due to the vastness of the areas in which plastic is concentrated. Using vessels and nets to collect the plastic from one garbage patch would take about 79,000 years and tens of billions of dollars. Besides, such an operation would cause significant harm to sea life and generate huge amounts of CO2 and other emissions.

Why move through the oceans, if the oceans can move through you? Instead of going after the plastic using boats and nets, The Ocean Cleanup will use long floating barriers, using the natural movement of the ocean currents to passively concentrate the plastic itself. Virtually all of the current flows underneath these booms, taking away all (neutrally buoyant) sea life, preventing by-catch, while the lighter-than-water plastic collects in front of the floating barrier.

The scalable array of floating barriers, attached to the seabed, is designed for large-magnitude deployment, covering millions of square kilometers without moving a centimeter. The Ocean Cleanup’s research into the feasibility of its concept indicates that using a single 100 km cleanup array, deployed for 10 years, will passively remove 42% of the great pacific garbage patch. We conservatively estimate this to be 70,320,000 kg. This (conservative estimate) would imply a cleanup cost of € 4,53 per kilo.

See also: Great Pacific Garbage Patch: Plastic Soup and Plastic Planet – Plastic Soep by Jesse Goossens Plastic Planet – Recycled Island: Cleaning our Oceans and Creating a Floating City – The Plastiki Expedition by David de Rothschild – The House of Plastic: Prefab Homes made of Plastic Garbage – From Oil to Plastic and from Plastic back to Oil: The Magic Box by Akinori Ito – The Throwaway Mentality and The 5 Oceanic Gyres – The Plastiki Expedition by David de Rothschild: On National Geographic Channel – Plastic Whale – EU-Commissaris Maria Damanaki Wil Op Plastic Gaan Vissen in de Middellandse Zee – Pacific Garbage Screening (PGS): De Kam Om De Oceanen Schoon Te Maken

16 Reacties

  1. Erik van Erne zegt:

    10 oktober 2015 om 10:46 | Permalink

    The 20-Year-Old Boyan Slat With a Plan to Rid the Sea of Plastic

  2. Erik van Erne zegt:

    12 mei 2017 om 12:17 | Permalink

    Deploying The Ocean Cleanup: Simulation

    The Ocean Cleanup aims to start extracting plastic from the Great Pacific Garbage Patch in the first half of 2018.

    The main idea behind The Ocean Cleanup is to let the ocean currents do the work. An installation of Ushaped screens channels floating plastic to a central point. The concentrated plastic can then be extracted and shipped to shore for recycling into durable products. The passive systems is estimated to remove half the Great Pacific Garbage Patch in 5 years.

  3. Erik van Erne zegt:

    15 mei 2017 om 12:22 | Permalink

    How we will rid the oceans of plastic by Boyan Slat

    On May 11th 2017, Boyan Slat, Founder and CEO of The Ocean Cleanup, the Dutch foundation developing advanced technologies to rid the oceans of plastic, announced a design breakthrough allowing for the cleanup of half the Great Pacific Garbage Patch in just 5 years.

    The main idea behind The Ocean Cleanup is to let the ocean currents do the work. An installation of U-shaped screens channels floating plastic to a central point. The concentrated plastic can then be extracted and shipped to shore for recycling into durable products. The improvements involve the introduction of a mobile, or drifting system. Rather than fixing the floating screens to the seabed at great depths, The Ocean Cleanup will apply sea anchors to ensure the floating screens move slower than the plastic. Rather than one massive barrier, the improved, modular cleanup system consists of a fleet of screens.

  4. Erik van Erne zegt:

    21 juli 2018 om 17:01 | Permalink

    The Ocean Cleanup Technology, Explained

    The ocean is big. Cleaning up the Great Pacific Garbage Patch using conventional methods – vessels and nets – would take thousands of years and tens of billions of dollars to complete. Our passive systems are estimated to remove half the Great Pacific Garbage patch in just five years, and at a fraction of the cost. Our first cleanup system will be deployed in the summer of 2018. This is how it works.

  5. Erik van Erne zegt:

    26 juli 2018 om 14:31 | Permalink

    C-Job Naval Architects Announces Partnership With The Ocean Cleanup

    C-Job Naval Architects is proud to announce its partnership with The Ocean Cleanup. The Ocean Cleanup is a non-profit organisation that has designed the first feasible method to rid the world’s oceans of plastic. C-Job will assist The Ocean Cleanup’s activities with engineering capacity and knowledge sharing.

    “Like The Ocean Cleanup, we are a dynamic company that shares the vision – indeed, the responsibility – to contribute to a cleaner and healthier marine environment,” comments C-Job’s Managing Director Basjan Faber. “With this in mind, what better initiative is there to work with than The Ocean Cleanup?”

    Designing ships that not only meet the functional specifications of it clients, but are also as environmentally friendly and sustainable as possible is at the core of C-Job’s mission. “Our engineering team is ready to support The Ocean Cleanup’s own project requirements by transferring their knowledge of sustainable and technically practical solutions.”

    The Ocean Cleanup has developed a passive cleaning system that moves with ocean currents. It consists of a floater with a solid screen underneath, concentrating plastic debris, making it easy to extract and bring back to shore for recycling.

    While launching several expeditions to map the degree of plastic pollution in the Pacific Ocean, The Ocean Cleanup also performed scale model tests in the North Sea. Deployment of the first cleanup system in the Pacific Ocean is scheduled to take place in Q3 of 2018.

    See also: Vijf Elektrische Ro-Ro Veerponten Voor GVB Amsterdam by C-Job Naval Architects

  6. Erik van Erne zegt:

    28 juli 2018 om 17:14 | Permalink

    The Ocean Cleanup System: Launch Date Announced

    On September 8, we will launch the world’s first ocean cleanup system from our assembly yard in Alameda, through the San Francisco Bay, toward the infamous Great Pacific Garbage Patch.

    To celebrate this historic moment, we would like to invite you to watch the deployment live, either online or in person.

  7. Erik van Erne zegt:

    21 augustus 2018 om 16:41 | Permalink

    A.P. Moller – Maersk is providing marine support to The Ocean Cleanup

    By installing a pilot clean-up system in the Pacific. The project marks the world’s first major initiative for collection of plastic from the ocean.

    Global plastic production has risen steadily since the 1950’s with over 5 trillion pieces of plastic currently estimated to be littering all the major ocean basins. The Ocean Cleanup, a non-profit organisation and globally recognised frontrunner in reducing plastic pollution, has developed a 600m long floating buoy system with a screen to collect plastic debris for recycling.

    In September 2018, the first offshore cleaning system will be installed by Maersk Supply Service’s AHTS vessel, Maersk Launcher, in the Great Pacific Garbage Patch (GPGP), located 1200 nautical miles off the coast of San Francisco.

    The installation of the first clean-up system is partly funded by A.P. Moller – Maersk and DeepGreen. Currently, DeepGreen has Maersk Launcher on charter and has released it to perform the operation for the Ocean Cleanup.

    Ensuring a healthy environment
    The total contribution is around USD 2m in vessel services and equipment which also includes providing transportation of equipment needed for the installation of Cleanup System 001, from the UK and Denmark to San Francisco, as well as providing open top containers for the collected plastic.

    “A. P. Moller – Maersk contributes to the protection of the ocean environment through enhancing the sustainability of all our activities both at sea and on land,” says Claus V. Hemmingsen, Vice CEO of A.P. Moller – Maersk and CEO of the Energy division.

    “In addition to always taking great care that our operations do not pollute the oceans with plastic, we are also very pleased to take part in the world’s first major collection of plastics from the ocean. As a responsible maritime operator, we are committed to ensuring that the oceans can remain a healthy environment for generations to come,” he adds.

    The Ocean Cleanup’s long-term ambition is to install at least 60 systems to remove 50% of the 80,000 tonnes of plastic in the Great Pacific Garbage Patch within five years.

  8. Erik van Erne zegt:

    4 september 2018 om 16:10 | Permalink

    The Ocean Clean Up: System 001 Launch Saturday September 8th 2018

    After six months of assembly, we can now announce that System 001 is officially complete. It is currently positioned entirely in the Seaplane Lagoon – the sheltered body of water adjacent our assembly yard in Alameda. The cleanup system will make tow with the Maersk Launcher at Anchorage 9 on September 7th, the morning before the launch.

    The system (floater, skirt and stabilizers) were transferred into the lagoon on August 24th to assemble the last few elements. These include the E&I pods, that are equipped with the navigation lights, GPS, satellite communication equipment, cameras and AIS tracking devices. The pods also include solar panels to power the electrical equipment on the system while it is out at sea.

    On Saturday, September 8, 2018, System 001 will embark on its voyage to the Great Pacific Garbage Patch and to begin the cleanup. On September 8, we will launch the world’s first ocean cleanup system from our assembly yard in Alameda, through the San Francisco Bay, toward the infamous Great Pacific Garbage Patch. To celebrate this historic moment, we would like to invite you to watch the deployment live, either online or in person.

  9. Erik van Erne zegt:

    11 september 2018 om 19:14 | Permalink

    The Ocean Clean Up: System 001 Launch Timelapse

  10. Erik van Erne zegt:

    7 oktober 2018 om 19:42 | Permalink

    Pacific Trials Results – System 001 is Go

    The Pacific Trials was our last chance to run through a series of tests before we tow System 001 the distance to the Great Pacific Garbage Patch. For the last two weeks, our crew aboard the Maersk Launcher conducted a various tests on the system and the environment around it to be certain it was ready for the challenge of the world’s largest ocean garbage patch.

    On Tuesday evening in Rotterdam (Tuesday morning for the crew on the Launcher), a meeting was held to fully evaluate the current situation. A careful rundown of all tests was presented, and concerns and issues were brought to the table. After two hours of evaluation and discussion, it was concluded that System 001 shall continue to the Great Pacific Garbage Patch.

  11. Erik van Erne zegt:

    12 december 2018 om 11:52 | Permalink

    Tegenslag Voor The Ocean Clean Up: Nederlands Schoonmaaksysteem Oceanen Houdt Plastic Niet Vast

    De plasticvanger van The Ocean Cleanup heeft te maken met een tegenvaller. Het door de Nederlander Boyan Slat bedachte schoonmaaksysteem beweegt te langzaam en houdt het plastic dat in de Grote Oceaan wordt verzameld niet vast. Daardoor kan het niet worden opgevist.

    Het team probeert de hapering zo snel mogelijk op te lossen. Slat is niet uit het veld geslagen door deze pech, want hij hield vooraf al rekening met dit soort verrassingen.

    Hij heeft ook goed nieuws. In de 600 meter lange arm die op zee drijft en zo het plastic vangt, zijn geen in zee levende schepsels aangetroffen.

  12. Erik van Erne zegt:

    20 december 2018 om 14:19 | Permalink

    World’s First Ocean Cleanup System Isn’t Yet Doing Its Job

    Months after its highly anticipated deployment off the San Francisco coast, Boyan Slat’s multimillion-dollar Ocean Cleanup system is not cleaning up any plastic.

    “System 001″—which consists of a 600-meter-long floating pipe with a tapered 3-meter skirt attached underneath designed to catch debris—”is attracting and concentrating plastic, but not yet retaining it,” the organization admitted.

    Slat explained that System 001, which has been in the Great Pacific Garbage Patch since October, might be traveling too slow to retain the plastic. “Sometimes the system actually moves slightly slower than the plastic, which of course you don’t want because then you have a chance of losing the plastic again,” the 24-year-old Ocean Cleanup founder and CEO said.

    Engineers are now working out how to increase the speed of the device. Despite the setback, Slat remains hopeful. “What we’re trying to do has never been done before. So, of course we were expecting to still need to fix a few things before it becomes fully operational,”

  13. Erik van Erne zegt:

    1 januari 2019 om 14:41 | Permalink

    The Ocean Clean Up: Wilson To Return To Port For Repair And Upgrade

    Due to a structural malfunctioning of the cleanup system, today we made the decision to return to port earlier than planned. We will set sail as soon as an appropriate weather window is available.

    On Saturday, December 29th, during a regular inspection of the cleanup system, our offshore crew discovered that an 18-meter end-section had detached from the rest of the system. Although it is too early to confirm the cause of the malfunction, we hypothesize that material fatigue (caused by about 106 load cycles), combined with a local stress concentration, caused a fracture in the HDPE floater.

    It’s important to note that both the 580-meter main section and the 18-meter end section are both completely stable; all bulkheads are intact, and the end section has two stabilizers affixed to it, so rollover is not possible Also, because no material was lost, there have been no safety risks for the crew, environment or passing marine traffic. However, as the redundancy in the cleanup system’s sensors and satellite communication (which are mounted on both end sections) has now been compromised, we concluded it is sensible to return to port.

    We are, of course, quite bummed about this as 1) we hoped to stay out for a bit longer to collect more data on plastic-system interaction, and 2) it introduces an additional challenge to be solved. At the same time, we also realize that setbacks like this are inevitable when pioneering new technology at a rapid pace. Being in port provides us with the opportunity to make upgrades to the system with the aim of solving the plastic retention issue, which we previously reported.

    We are returning to port with terabytes of data that we will use in coming weeks and months to develop the necessary upgrades. The Maersk Transporter is also carrying around 2000 kg of plastic that we recovered from the patch over the past few weeks through a combination of the cleanup system and ghost net fishing (for comparison: once fully operational, System 001 is expected to harvest 1000 kg per week).

    Although we would have liked to end the year on a more positive note, we believe these teething troubles are solvable, and the cleanup of the Great Pacific Garbage Patch will be operational in 2019. The fact that the cleanup system orients itself in the wind, is able to follow the waves well and is able to catch and concentrate plastic gives us confidence in the technology.

  14. Erik van Erne zegt:

    4 januari 2019 om 14:37 | Permalink

    Opnieuw Tegenslag Voor The Ocean Clean Up: Veegarm Afgebroken

    The Ocean Cleanup loopt maanden vertraging op na afbreken veegarm. De plasticvanger van het Nederlandse project The Ocean Cleanup is kapotgegaan tijdens het opvegen van plastic afval op de Grote Oceaan. Een van de uiteinden is afgebroken.

    De veegarm wordt in de komende weken naar Hawaï gesleept voor reparatie. Dat gaat waarschijnlijk een paar maanden duren. Het afgescheurde uiteinde is ongeveer 18 meter lang. Waarschijnlijk kwam het los door materiaalmoeheid.

    In de loop van het jaar moet het systeem terugkeren naar de zogeheten Great Pacific Garbage Patch, de drijvende vuilnisbelt vol plastic deeltjes, tussen Hawaï en de westkust van de Verenigde Staten.

    Het systeem heeft in de afgelopen weken ongeveer 2.000 kilo plastic opgevist uit de oceaan. Het gaat om onder meer achtergelaten visnetten.

  15. Erik van Erne zegt:

    2 maart 2019 om 18:51 | Permalink

    System 001: First Mission by The Ocean Clean Up

    System 001 is our first system and we planned to learn a lot from this new technology. During the four months of deployment, the challenges we faced have brought us a greater understanding of the environment of the Great Pacific Garbage Patch and how our system behaves in it. All three shifts collected incredible amounts of data which we are now using to enhance the design of our technology. System 001 has been brought back to port, but we will return to the patch with an improved design in the coming months.

  16. Erik van Erne zegt:

    29 mei 2019 om 16:45 | Permalink

    The Ocean Clean Up System Design Upgrades Completed: Relaunch System 001/B In June 2019

    Last September, we deployed System 001 into the Great Pacific Garbage Patch – marking the first-ever attempt to start cleaning it up. During the last campaign, we confirmed many key assumptions of the design, but also encountered two unscheduled learning opportunities: the system did not maintain a sufficient speed, allowing plastic to exit the system, and a stress concentration caused a fatigue fracture in the HDPE floater (more detailed information in our Root Cause Analysis).

    With the understandings from the root cause analysis, the engineering team began to work on solutions that we could start trialing in the Great Pacific Garbage Patch (GPGP) in June. The upgraded design, which we have dubbed System 001/B, will entail various modifications that will be tested during our next campaign. By adapting the design to address these unknown learning opportunities, we aim to have a system that can effectively capture plastic and withstand the forces of the ocean.

    Survivability is essential if we intend to keep our systems deployed for long periods of time and expect them to endure the harsh winter months in the ocean. In addition to the modifications detailed below, the main improvement of the structural design was to simplify the HDPE pipe and allow minimal fluctuations in the wall thickness. The following we aim to test in the next campaign:

    1. New screen design – because the rail connection (dovetail connection) was the cause of the fatigue fracture, we have completely eliminated this aspect of the design by bringing the screen slightly forward and connecting it to the pipe using slings. This simplifies the connection to the system and should allow us to minimize stress concentrations.

    2. Eliminate stabilizer frames – to ease the loads on the pipe, we will not use the stabilizer frames. By simplifying the electronics on this design in particular, we no longer require these frames, as they were primarily there to prevent the system from toppling over from the weight of the electronics.

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