Date of publication: 2017-08-05 20:02
A: Reducing the amount of paper you use is not just being cost-effective, it is taking concrete steps to reduce climate change. More so than any other waste management option - including composting, recycling, and landfilling - source reduction helps turn back the clock on climate change.
The molten lead is poured into ingot molds. Large ingots, weighing about 7,555 pounds are called hogs. Smaller ingots, weighing 65 pounds, are called pigs. After a few minutes, the impurities, otherwise known as dross, float to the top of the still-molten lead in the ingot molds. The dross is away, and the ingots are left to cool.
Recycling conserves raw materials and saves the additional energy that manufacturers would use producing new products from scratch. Recycling also reduces the amount of material going into landfills, which is a big bonus given that many countries are fast running out of space for trash. Luckily, recycling is easy, and can quickly become part of your normal routine.
While only about 67 percent of plastic bags and other film are currently recycled in the United States, according to the . Environmental Protection Agency, the demand for clean scrap film is quickly growing. Plastics are long-lived and, even after initial use, can serve as feedstock in a swiftly expanding manufacturing industry.
The broken battery pieces go into a vat, where the lead and heavy materials fall to the bottom while the plastic rises to the top. At this point, the polypropylene pieces are scooped away and the liquids are drawn off, leaving the lead and heavy metals. Each of the materials then begins its own recycling journey. We'll begin with the plastic, or polypropylene.
Stanford recycled, composted, and otherwise source reduced 66% of its waste and reduced landfill by 59%. The results are cleaner air and water, less pollution, more forested land and open space, and reduced greenhouse gases.
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When a material is source reduced (. less of the material is made), the GHG emissions associated with making the material and managing the post consumer waste are avoided. In addition, when paper products are source reduced, trees that would otherwise be harvested are left standing and continue to grow, removing additional carbon dioxide from the atmosphere. GHG emissions reductions resulting from source reduction of a variety of common materials are listed in the table.
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The polypropylene pieces are washed, blown dry and sent to a plastic recycler where the pieces are melted together into an almost-liquid state. The molten plastic is put through an extruder that produces small plastic pellets of a uniform size. Those pellets are sold to the manufacturer of battery cases, and the process begins again.