Tuesday , April 20 2021

Pollution by plastics in oceans at the bottom of the sea: Plastic clothing fibers have already reached the bottom of the sea



There is evidence of southern Europe, from Bysay Bay to the Black Sea, with a high density of textile remains of 3 to 8 mm in length. According to experts, these microfibers come mainly from domestic washing machines.

Previous research had already indicated the presence of these materials on a bed in the Atlantic. Now, the seas of Europe are also part of the problem. Pixabay

A study led by researchers from the University of Barcelona (UB) has measured attendance Textile microfibers on bed and sea in southern Europe, from Bysay Bay to the Black Sea.

The work, published in the magazine PLoS UN, have studied how many of these color fiber, with a length of 3 to 8 mm but extremely fine, less than 0.1 mm in diameter, which comes mainly from domestic and industrial washing machines.

The results show a mastery of cellulose fibers over synthetic polymers, and highlight the fact that different copywriting processes sweep, carry and build up microfibers towards large marine fittings.

According to the authors, the work documented the size of this type of waste on the bed and the sea and could help to design effective management strategies to reduce the emissions of microfibers that have a potentially negative impact on ecosystems morol.

Residues more than 2,000 meters in depth

Microfibers are one of the most frequent types of microbial observations that have been observed in the marine environment, but to date it did not have them A study with such detail in such a wide area. Researchers have analyzed sediment samples between 42 and 3,500 meters deep in 29 stations in southern Europe.

The research shows that the highest fiber density can be seen at Cantabri Sea, followed by the west of the Mediterranean and the Sea of ​​Alboran, respectively, while the lowest density found in the eastern Mediterranean and Black Sea.

The study also shows that the remote sea depth does not prevent the collection of microfibers, since then around 20% of these particles build up in the open sea beyond 2,000 meters from depth.

"The microbes appear to have been summed up at the bottom of the submarine canyons, while the amounts are significantly lower on the slopes. This suggests that there are microfibers that are similar to land – a machine can washing up up to 700,000 microfibers to waste water in one washing – accumulation of the continental shelf, from where they are transported by various oceanic processes to marine banks, taking advantage of the natural pieces of the submarine canyons ", explains Anna Sánchez Vidal, one of the authors.

Waiting in deep deep organisms

These findings are also Confirm previous studies that have detected microfibers that are triggered by deep water organisms in a natural environment. "Recent results show the spread of microplasts from different organisms and in different ecosystems, but the concrete effect on organisms is not anonymous," emphasizes Anna Sánchez Vidal. "It can rely on a wide range of factors, such as the characteristics of the microfibers or the chemicals that they have insulated, as well as the physiology and ecology of marine organisms," the expert emphasizes.

The main type of microfiber found in the bed is the cellulose, natural (cotton, linen) and regeneration (rayon or viscose), mainly comes from industrial clothing and textiles. In terms of synthetic fibers, polyester is the most numerous, and then there are acrylic, polyamide, polyethylene and polypropylene. "Some of these synthetic microfibers are made of plastic, which can contain chemical additives, which may be easy to include in the food web," emphasize the researcher.

Measures to reduce emissions

For researchers, the presence and persistence of microfibers in marine sediments – and the long-term negative impact that they can have on marine organisms – makes it clear that effective control strategies must be designed to reduce emissions. "We must take a step forward in research and innovation in the textile industry, in the design of effective filters for washing machines, when properly handling wastewater, and in promoting the use of responsible clothing", comes to & # 39; the Sánchez Vidal collection.


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