Paper and plastic bags' required energy inputs From the same analysis, we learn that plastic also has lower energy requirements -- these numbers are expressed in millions of British thermal units Btus per 10, bags, again at 1.
The use and reuse of the plastic carrier bags: The manufacture of paper bags is much more resource intensive than plastic consuming larger amounts of energy and water.
It takes approximately three tons of wood chips to make one ton of pulp. It takes approximately three tons of wood chips to make one ton of pulp. Plastic bags just take less energy to create, which is significant because so much of our energy comes from dirty sources like coal and petroleum.
Paper bags hold more stuff, but plastic bags use less energy during production and recycling. Because of the enormous amount of plastic bags handed out, many communities have decided to ban them altogether.
EPAmanufacturing new plastic from recycled plastic requires two-thirds of the energy used in virgin plastic manufacturing. How does plastic bag recycling work? The typical plastic shopping bag weighs grams; a standard Kraft paper bag weighs 55 grams.
See below, or the section next section, Paper versus Plastic—The Studies. Plastic bags most often come from one of the five types of polymers -- polyethylene -- in its low-density form LDPEwhich is also known as 4 plastic. After a three-year wait for the logs to dry, they are stripped of bark and then chipped into one-inch squares.
Not to mention the fact that 90 percent of stores use plastic bags, not paper. More On Reusable Bags. First, the trees are found, marked and felled in a process that all too often involves clear-cuttingresulting in massive habitat destruction and long-term ecological damage.
A look at the facts and numbers Further insight into the implications of using and recycling each kind of bag can be gained from looking at overall energy, emissions, and other life cycle-related costs of production and recycling.
Paper comes from trees -- lots and lots of trees. The pulp is then washed and bleached; both stages require thousands of gallons of clean water. In the production of both paper and plastic bags, valuable natural resources are used.
The UK Environment Agency study of supermarket carry bags LCA found that paper bags contribute three times more to global warming than conventional plastic shopping bags do.
The biggest energy input is from the plastic bag creation process is electricity, which, in this country, comes from coal-burning power plants at least half of the time; the process requires enough juice to heat the oil up to degrees Fahrenheit, where it can be separated into its various components and molded into polymers.
In the production of both products, the use of toxic chemicals contributes to air pollution, such as acid rain, and water pollution. The supermarket carrier bag to be the most popular plastic bag to reuse.Feb 04, · Paper or Plastic? Paper or Plastic?
MAG. Paper bags are not the safer, more economical, and overall better choice for the environment. National Essay Contest; Cover Art Contest.
Plastic bags are very harmful for the environment, and paper bags even more so. The best alternative is a reusable bag, which can save thousands of plastic bags over its lifetime. Paper bags are biodegradable (a plastic bag would still be in a landfill 1, years from now whereas a paper bag would be long gone in about 1 yr).
iii. And because paper grocery bags can be reused and recycled so easily.
Versus Plastic Bags Every day in this country, people are given the choice of paper or plastic before exiting the supermarket. Although most of those same people would agree that neither is necessarily the best choice, the decision between paper or plastic bags is commonly made without the knowledge of the differences between them.
Paper vs. Plastic: The Great Green Debate Which is better for the environment – paper bags or plastic bags? Lawmakers in various parts of the country are betting on paper. “Coloring is added to more water, and is then combined in a ratio of one part pulp to four hundred parts water to make paper” (“Paper vs.
Plastic,” par. 6).Download