From shark robots to IoT, marine debris ‘Operation Zero’ [우리가 몰랐던 과학 이야기] (276)
Not long ago, a broadcaster reported that as a result of the investigation of the origin of the garbage in the Pacific Garbage Island, which is made of marine garbage, Korea’s rate (10%) is the third after Japan (34%) and China (32). %). More than 80% of the litter was fishing waste such as nets and buoys. The Pacific Garbage Island created in this way is about 1.6 million square kilometers, and is said to be 16 times the size of South Korea.
Marine debris has a huge impact on marine life and marine ecosystems, and this damage comes back to us like a boomerang. Recognizing the seriousness of marine debris, the European Union (EU) issued a directive banning the use of single-use plastic products from July last year, and the Assembly -The United Nations on the Environment held in March concluded a legally binding international agreement to end plastic pollution. . ‘ Adopt a resolution to make arrangements.
The Korean government also plans to reduce the amount of marine plastic waste by 60% by 2030 and achieve zero by 2050.
Therefore, various technologies are being developed for the collection of marine waste from the sea. Today, we will introduce ‘smart’ technology that collects marine waste that is polluting the world.
U-shaped marine debris cleaning technology ‘System 002’
Ocean Cleanup is an international non-profit environmental organization that promotes and cleans up the seriousness of marine pollution.
Ocean Cleanup uses two ships to spread a large ‘U’ shaped net and pull it to collect the rubbish floating in the sea.
By removing 10 tons of plastic waste at a time, and setting a record for a single collection, we set a goal to eliminate 90% of the Pacific Garbage Patch by 2040.
We are collecting it once a week, sorting the plastic waste by type on the ship and recycling it on land.
Waste Shark robot that eats garbage
Dutch marine technology company Ranmarine has developed a robot called ‘Waste Shark’ (pictured) that cleans up marine debris based on a model of a whale shark.
This robot, which means garbage-eating shark, collects around 500 kg of garbage and green algae every day as it moves around the Dutch port of Rotterdam, the largest trading port in Europe .
The Shark Waste (pictured) collects environmental data such as salinity and chemical composition, pH balance, and temperature through its integrated sensors, and collects waste with effectively through its autonomous driving function.
The garbage collected in this way can be recycled or upcycled through partner companies.
◆IoT technology to find abandoned nets in the sea
Recently, a research team at a university in Korea announced that they are developing an ‘automatic fishing gear identification monitoring system’ that uses IoT (Internet of Things) technology to find fishing nets -abandoned fishing in the sea.
This is a system that can monitor the owner, type, location, etc. in real time by attaching an electronic buoy that transmits location information to any fishing equipment based on IoT technology.
The amount of fishing gear used in Korea is 131,000 tons per year, of which 44,000 tons, or 23.5%, are dumped into the sea and polluted.
The automatic identification monitoring system is a kind of fishing gear real name system, and it is expected to protect the marine ecosystem by preparing for loss and managing abandoned fishing gear.
◆ Marine waste recycling technology
While it is important to collect marine debris from the ocean, it is also important to recycle it once it is collected.
Securing technologies and systems to process plastics collected from the sea in an environmentally friendly way and re-produce them as raw materials or plastic packaging is also important.
Hanwha Compound, a subsidiary of Hanwha Solutions, supplies polyamide (PA), an environmentally friendly material made from recycled fishing nets, to the ‘Galaxy S22’, ‘Galaxy Tab S8’ and ‘Galaxy Book 2 Pro’ series of ‘ Samsung Electronics.
Hanwha Compound and Samsung Electronics have succeeded in mass producing pellets in the form of small grains by applying independently developed mixing technology to waste fishing nets collected from the sea. They are processed and used as parts of electronic devices.
By obtaining UL certification, an international certification authority, it has shown durability and eco-friendliness that can be used in electronic devices.
Collecting and recycling marine debris is important, but more importantly, preventing it from happening again. In order to end the pollution of the oceans, it is important not to use single-use plastics in everyday life and to separate and dispose of garbage properly. We hope that the day of zero marine debris will arrive soon.
Hanwha Solutions blogger
*This article was written in partnership with Hanwha Solutions and Segye Ilbo.
[ⓒ 세계일보 & Segye.com, 무단전재 및 재배포 금지]
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