Mechanical recycling takes used plastic and physically processes it back to resin pellets, leaving the polymer chain intact. Recycling of polyethylene terephthalate (PET) and high-densitypolyethylenehas been established as a viable business, but there is room for further process optimization. A key cha...
First, we collect the plastic. It is sorted into different kinds. Then it is cut into small bits and washed. After being washed, the plastic is melted and made into pellets. Now the old plastic can be used again. We can make new things! We can make many things out of recycled plasti...
C. The amount of plastic waste is increasing. D. Recycled lower-grade products sell badly. 相关知识点: 试题来源: 解析 与解析:A 根据第一段第二句“However, one of the problems with present plastic recycling methods is that you end up with a lower-quality plastic with worse properties(特征...
However, some,including plastic bags, can be recycled.The ability of a plastic to be recycled depends on a number of factors, including the location where one plans to recycle, as well as the material used to make the plastic. Here is more information that can shed light on plastic recycli...
题目 What is the problem with the present plastic recycling? A The quality of recycled plastics declines. C The amount of plastic waste is increasing. B Plastic drink bottles cannot be recycled. D Recycled lower-grade products sell badly. 相关知识点: 试题来源: 解析 A 反馈 收藏 ...
What can be recycled? A. Only paper. B. Only plastic. C. Paper, plastic, glass, and metal. D. None of them. 相关知识点: 试题来源: 解析 C。原因:文章分别介绍了 paper、plastic、glass 和 metal 这几种类型的废物都可以被回收利用。
A. New plastic bottles. B. Post-consumer plastic bottles. C. Natural fibers. D. Synthetic fibers. 相关知识点: 试题来源: 解析 B。解析:“Recycled polyester, on the other hand, is made from post-consumer plastic bottles”,再生聚酯是由消费后的塑料瓶制成的。反馈...
While the body of plastic bottles consumes most of our attention, the small caps which keep their contents secure are sometimes neglected. These items are made of a harder and less pliable plastic than the bottles themselves, which makes them suitable for creating other items. These...
However, in up cycling, the whole object, or parts of the object, is reused in a new way. Up cycling can be less wasteful than recycling and more creative. An old guitar, , can be turned into a unique piece of furniture.Unwanted electronic equipment, or e-waste mostly plastic and ...
One ton of plastic is about 50,000 bottles. A polar bear weighs a ton, so the plastic we need every month weighs as much as 1,500 polar bears.When doing this, the company can save 20% of water. Now DGrade also makes cups and bags out of recycled plastic bottles. These things are...