- The Methodology of Paper Recycling
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- Green way to recycle paper
- Paper Recycling: When, How and Why? Here’s What You Need to Know
A large portion of paper waste generated in CSE comes from the 20 — 25 newspapers that the library subscribes. Initially the library received 80 - 90 newspapers each day but today with most newspapers being available online, the number of newspapers received physically has come down drastically. The remaining waste comprises discarded cardboard packing material and postage waste.
On an average, CSE generates about - kgs of waste paper each year.
The Methodology of Paper Recycling
Each morning the housekeeping staff collects waste paper from the entire office complex. The paper thus collected is then segregated into recyclable and non recyclable.
It is then stored. As soon as a full truckload of paper is collected, it is sent to Vatavaran, a non government, non profit, community based organization based in New Delhi. This process of transforming the recovered paper materials to pulp is known as pulping.
The pulp is then passed through a series of screens, and a centrifuge-like process to remove larger contaminants such as paper clips, staples, tape, and plastic films that were included in the recovered paper. After removing larger contaminants, pulp is added to a flotation tank where chemicals and air bubbles remove dyes and inks to enhance the purity and whiteness of the product. Hydrogen peroxide, and other whitening agents may be added to further enhance the whiteness if a white color is desired as the product.
This step continually bleaches the pulp until it is ready for the final processing stage.
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Dyes are sometimes added to create colored products, and in some cases a small amount of blue and black dye are added to create a bright white printing paper . Brown paper pulp, such as paper pulp used to make paper towels, is not bleached.
The pulp, which is now 99 percent water and one percent fiber at this stage, may be combined with pulp made from new materials to enhance its properties, and is then pumped over onto a paper machine . The pulp is then passed over rollers that press out excess water, or a vibrating machine to create a product made of 50 percent water and 50 percent fiber. The pulp can be used alone or additional virgin wood fiber can be added to the pulp to give the paper extra strength or smoothness.
If coated paper is desired for smooth printing, a coating mixture may be applied to the paper near the end of the paper-making process or after the process is completed.
Next, the sheets pass through steam heated rollers, at temperatures as high as degrees Fahrenheit to form long rolls of continuous sheets of flattened paper. A single roll of this paper can be as wide as 30 feet and weigh up to 27 metric tons . At this stage, coatings such as potato starch are sometimes added to the paper to keep ink from spreading like it does when writing on tissue paper.promresmesi.tk
Green way to recycle paper
The ends of the roll are then trimmed and recycled to make new pulp . The resulting paper roll is then shortened into smaller sections and sent to various manufacturers that use paper to make their product, such as newspaper printing, wrapping paper, printing paper, and blown-in cellulose insulation. Unfortunately, there is a limit to how much recovered paper can be recycled. During the paper recycling process, the individual paper fibers are shortened more and more each time they are recycled, and generally have a maximum limit of 7 times that they can be recycled. The availability of recycling programs varies across the United States  , and across the world.
Most communities and offices in the United States accept at least some grades of paper at curbside pickup.
Paper Recycling: When, How and Why? Here’s What You Need to Know
Most curbside recycling programs pick up recyclables once a week; check with your local program to determine the appropriate day to take your recyclables to the curbside to prevent unintentional disposal in landfills. Even though recycling programs are largely available throughout the United States, paper makes up approximately 25 — 33 percent of our annual garbage output [12,13]. Almost all paper types can be recycled, including magazines, corrugated cardboard, printer paper, packaging papers, newspaper, cardboard dairy and juice cartons, unsolicited direct mail, phone books, and more .
It is very important to check with your recycling company to determine which types of paper products can be recycled and which ones cannot. For instance, used paper towels and paper plates cannot be recycled because they contain food particles.
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However, in most cases, such paper products can be composted in your backyard or composted by your local waste management company or municipality. Recycling paper is not only for paper mills; you can also recycle paper at home by following a few simple steps. First, affix the screen or mesh to an old picture frame using nails, staples, or glue to make a paper mold. Examples of recycled paper products Recycled paper products are used in our everyday lives, and you may not even be aware that you are using it. In fact, an estimated million tons of paper and cardboard are produced annually from recycled paper sources.
The most common examples of products made from recycled paper are white printing paper, toilet paper and tissues, paper towels and napkins, greeting cards, cardboard, and magazine and newspapers . Creative retailers are also selling other items that have not traditionally been made from recycled paper.
For instance, Ten Thousand Villages sell flower vases, picture frames, clocks, and other crafts made from recycled paper . In the United States alone, approximately 1 billion trees worth of paper is discarded each year .