to what extent does recycling decrease the carbon footprint

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Introduction to Metals Metals are natural components from the earth that are found in compounds but are separated to individuals. The recycling process of metals begins by separating the metals collected into two groups, aluminum and steel, reclaimable metals include aluminum products such as tin coated steel containers, bi-metal containers, nonferrous metals, and ferrous metals. After the metals have been classified by type, they are then dissolved into a molting hot liquid which is later poured into blocks and set-to cool. Aluminum melts at 1200 degrees Fahrenheit whereas steel melts at an even higher temperature of 2, 800 degrees Fahrenheit .Hence more energy is need to make steel products than to make aluminum products. Aluminum comes from bauxite ore which requires a great amount of raw material to produce a small quantity of the product. An estimated six pounds of ore may be essential to produce one pound of aluminum. Because bauxite is usually mined from equatorial rainforests, it entails removing vegetation and the topsoil from big areas of land; they therefore distribute new soil to recover the lost. The process of manufacturing aluminum takes a great deal of electricity, which comes from burning fossil fuels. The refined bauxite is mixed with blistering soda and is heated in a kiln, to create the aluminum oxide. A white powder then undergoes an electrolytic reaction, in which a direct electrical current is used to separate out the oxides and produce the material into aluminum. The material is then heated up to almost 3000˚F for this operation to occur. The processing of bauxite into aluminum results in large measures of waste (called “mud”) which comprises of heavy traces of metals and other hazardous substances.... ... middle of paper ... ... it sounded like something from a chicken, and however it is actually the term for ready recycled glass. The cullet makes up to 70 percent of the raw material mixture for new glass. This material is mixed at 2600 Fahrenheit to2800 degree Fahrenheit. When recycling glass bottles 315kg of Carbon dioxides emissions are saved per ton of glass recycled that is after taking into account the transportation and processing. By adding waste glass to a furnace in the glass manufacturing process it reduces the energy requirement and decreases CO2 emissions. Each ton of cullet added to the furnace saves 1.2 tons of raw materials diminishing the carbon emissions further, when put in comparison to the new glass ;which takes up a lot more energy to make. An effective heater burns 4 gigajoules to melt every ton of glass, which is the energy equivalent of burning 250kgs of wood.

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