4. In our country, we collect and recycle batteries (white), glass (black), plastic (red), paper (blue) and cans (yellow). We also recycle used equipment and home appliances in special sections.
5. In our school we collect batteries, paper and cans. We don’t collect plastic bottles or glass.
6. Battery recycling aims to reduce the number of batteries being disposed as municipal solid waste. People are concerned about contamination, particularly of soil contamination and water pollution, by the addition of heavy metals and other toxic chemicals from batteries. Most types of batteries can be recycled. However, some batteries are recycled more readily than others, such as lead - acid automotive batteries (nearly 90% are recycled) and button cells (because of the value and toxicity of their chemicals).Other types, such as alkaline and rechargeable, can also be recycled.
18. Plastic consists of various substances . M ost of them slowly spread and are harmful to people. S hopping bags or bottles of drink are made of plastic. Burning plastic is prohibited bec a use toxic gases are emitted into the atmosphere during combustion. However, they can be processed and reused. A lot of packs are made of plastic Shopping bags pollute our environment
19. We buy plastic bags or bottles. What happens to plastic after inserting into a suitable container ? Throw discarded plastics into suitable containers. They are sent to recycling companies There , they are processed in to such tubes , garbage cans or even fleece jumpers!
22. Aluminum alloys are alloys in which aluminum is the predominant metal. Typical alloying elements are copper, zinc, manganese, silicon, and magnesium. There are two principal classifications, namely casting alloys and wrought alloys, both of which are further subdivided into the categories heat-treatable and non-heat-treatable. About 85% of aluminum is used for wrought products, for example rolled plate, foils and extrusions. Cast aluminium alloys yield cost effective products due to the low melting point, although they generally have lower tensile strengths than wrought alloys. The most important cast aluminium alloy system is Al-Si, where the high levels of silicon (4-13%) contribute to give good casting characteristics. Aluminium alloys are widely used in engineering structures and components where light weight or corrosion resistance is required .
23. A ircraft and automobile industry B uilding industry Dish industry Machine industry Ship industry Welding Paints to protection against corrosion Food industry C hemical industry Tin Application
39. Worn major appliance as light bulbs, computers, old televisons and radios, nonoperational refridgeratiers are in arrears on our cellars or lofts. What can We do with them? Answer look easy – to turf out them. But in practice this is not so simple. We should give back to due services point. Thats firms hand down theese WEEE ( W aste of E lectrical and E lectronic E quipment) to recycling process. Next WEEE disassemble for a machine elements and collect.
