Chinese scientists to develop to 'disappear' plastic in the sea

Chinese scientists to develop can be 'lost' in the sea of plastic Chinese scientists to develop can be 'lost' in the sea of plastic

to solve the problem of increasingly severe Marine plastic pollution, protect the Marine ecological environment, Chinese scientists have developed a can degradation of polyester composite material in seawater, is expected to replace existing difficult to degrade in many areas of common plastics.

Wang Gexia technical institute of physics and chemistry of the Chinese Academy of Sciences, senior engineer, the team developed the combination of the water-soluble and degradability of material has certain environmental tolerance, abandoned after degradation in sea water for several days to several hundred days disappear, eventually into the small molecules that won't cause pollution to the environment.

Wang Gexia said, people have long focused on the land of the white pollution and its governance. Until recent years, a large number of plastic pollution causes the phenomenon of Marine was killed is frequently reported to cause wide public concern.

according to conservative estimates, the human into the ocean every year on the plastic is 4. 8 million tons to 12. 7 million tons, or 60% to 80% of the total Marine solid contaminants. At present, human activities and ocean currents cause these plastic concentration distribution in the north Pacific, south Pacific, central north Atlantic, the south Atlantic ocean and the Indian Ocean.

the world economy BBS also warned that global ocean plastic will be the total weight in 2050 more than the total weight of the fish.

expert introduction, now almost all types of plastic have been found in the ocean. These plastic particles floating in the water or sink to the bottom of the ocean, does not decompose decades or even centuries, for the whole Marine environment caused serious pollution. Plastic is directly discarded after use or from the land through the rivers, the wind into the sea, in seawater by light weathering, seawater, and the role of ocean currents and biota, leads to the formation of a plastic ultimate micro plastic is less than 5 mm.

some sea creatures, such as the albatross, turtles, eating plastic bags will produce a series of gastrointestinal problems, so can't eat, has finally been starved to death. One of the most stunning scientific data shows that: 90% of seabirds because eating plastic bags and was killed.

Wang Gexia pointed out that although the ocean plastic pollution is very serious, but there are still no effective people for these plastic pollution response. Marine special waters environment makes people don't like on land for such a large number of dispersed for centralized collection and disposal. The most effective way is to make the material waste into the sea after degradation disappear on its own.

according to introducing, the physical and chemical technology, Chinese Academy of Sciences institute of degradable plastics and engineering plastics research group is China's first to develop biodegradable plastics research unit. Biodegradable plastics are polymers containing ester bond, the molecular chain is relatively weak, thus it can be by nature a lot of microbes, digestion, eventually to form carbon dioxide and water.

at present, the team of biodegradable plastics production and application technology has completed the technology licensing to four Chinese enterprises, three of them have successfully put into production, the total capacity of up to 7 every year. 50000 tons, accounting for half of the global total.

after realize the seriousness of Marine plastic pollution, researchers hope to develop biodegradable materials in the water. They found, however, can quickly on land degradation of biodegradable materials in seawater are difficult to degrade, even for a long time are not degraded, cannot be used to solve the problem of plastic pollution in the oceans.

after repeated experiments, the physical and chemical technology institute of scientific research team of enzyme hydrolysis and water soluble process combined with the process of biodegradation, realized the material in seawater rapid degradation. Scientific research personnel through the design, synthesis, modification and processing of materials make the degradation performance according to different application requirements.

in the near future in shenzhen to enhance China's capacity for independent innovation, more advanced science and technology achievements transformation of the first 'the first cup' the future of technology innovation competition, this technology among 30 winners.

China has to increase the ecological environment protection to all before unprecedented levels, in solving the problem of its ecological at the same time also to solve the problem of global environment pollution contribution of Chinese wisdom. Conversion table packaging printing knowledge