What Are the Benefits of Recycling Metal

What Are the Benefits of Recycling Metal The United States recycles 150 million metric tons of scrap materials annually, including 85 million tons of iron and steel, 5.5 million tons of aluminum, 1.8 million tons of copper, 2 million tons of stainless steel, 1.2 million tons of lead and 420,000 tons of zinc, according to the Institute of Scrap Recycling Industries (ISRI). Other metals such as chrome, brass, bronze, magnesium, and tin are recycled as well. What Are the Benefits of Recycling All That Metal? By definition, mining metal ores and refining them into usable metals is unsustainable; the amount of metals present on earth is fixed when considering (at least when considering any useful geological time scale). However, metals are easily recycled and reused, providing renewed opportunities for their use without having to mine and refine more of it. Thus, issues associated with mining like can be avoided, like  acid mine drainage.  By recycling, we reduce the need to manage extensive and potential dangerous piles of mine tailings.   U.S. Exports Recycled Metal In 2008, the scrap recycling industry generated $86 billion and supported 85,000 jobs. The recycled materials that the industry processes into raw material feedstock every year are used for industrial manufacturing around the world. For example, 25% of the steel used in production car panels (doors, hood, etc.) is obtained from recycled materials. For copper, used in the home building industry for electric wires and plumbing pipes, that proportion surpasses 50%. Each year, the United States exports staggering amounts of scrap metals - called scrap commodities  -  contributing significantly to U.S. trade balances. For example, in 2012 the U.S. exported $3 billion worth of aluminum, $4 billion of copper, and $7.5 billion of iron and steel. Metal Recycling Saves Energy and Natural Resources Recycling scrap metal reduces the substantial amounts of  greenhouse gas emissions  produced during the various smelting and processing operations used when making metal from virgin ore. At the same time, the amount of energy used is also much smaller. Energy  savings using various recycled metals compared to virgin ore is up to: 92 percent for aluminum 90 percent for copper 56 percent for steel These savings are significant, especially when scaled up to large production capacities. Indeed, according to the U.S.Geological Survey, 60% of steel production comes directly from recycled iron and steel scrap. For copper, the proportion coming from recycled materials reaches 50%. Recycled copper is almost as valuable as new copper, making it a common target for scrap metal thieves. Metal recycling also conserves natural resources. Recycling one ton of steel conserves 2,500 pounds of iron ore, 1,400 pounds of coal and 120 pounds of limestone. Water is also used in great quantities in the manufacturing of many metals. According to an industry source, through recycling steel the amount of energy conserved would be enough to power 18 million homes for an entire year.  Recycling a ton of aluminum conserves up to 8 tons of bauxite ore and 14-megawatt hours of electricity.That figure does not even account for shipping the bauxite from where it is mined, generally in South America.  The total amount of energy saved in 2012 by making aluminum from recycled material added up to 76 million megawatt hours of electricity.​ Edited by Frederic Beaudry.

Word Choice Qualitative vs. Quantitative

Word Choice Qualitative vs. Quantitative Word Choice: Qualitative vs. Quantitative If you’re studying at college, you’ll hear the terms â€Å"qualitative† and â€Å"quantitative† used at some point. These describe two approaches to research, each of which is associated with different techniques and methods. Mixing up â€Å"qualitative† and â€Å"quantitative† can, therefore, detract from the clarity of your written work. As such, knowing how to use these words correctly is essential. Qualitative (Related to Quality) One sense of the term â€Å"quality† is â€Å"a distinctive characteristic of something.† As such, â€Å"qualitative† means â€Å"related to the quality of something.† In research, this means focusing on the subjective meaning or character of something. In the social sciences, for instance, researchers are often interested in peoples opinions or motivations. A paper in this field might therefore say: This research used a qualitative approach to assess intention to quit among teaching staff. Methods associated with qualitative research include interviews, direct observation, and case studies. Spying on your neighbors doesnt count as qualitative observation, by the way. Quantitative (Related to Quantity) At this point, you won’t be surprised to find out that â€Å"quantitative† means â€Å"related to quantity.† In academic research, this involves working with numerical data (i.e., things that can be counted or analyzed statistically). Quantitative approaches are often associated with the sciences, but they’re also used in everything from marketing research to anthropology (the key factor is using numbers): Population change was estimated using quantitative techniques. The methods used to gather quantitative data vary, though they range from using hi-tech measuring instruments to statistical analysis of survey data. Numbers! Numbers everywhere! Qualitative or Quantitative? â€Å"Qualitative† and â€Å"quantitative† look similar on paper, so it’s easy to mix them up. However, since they cover very different types of research, you must use the correct term when writing up a study, even if using a mixed-methods approach. The important thing is that qualitative research is concerned with subjective meanings (i.e., the quality of something), while quantitative research deals with numbers (i.e., the quantity of something). Remember: Qualitative = Related to subjective human understanding Quantitative = Related to numerical data and statistical analysis