Why Recycle slide show
- 2. Slogan Logo You will produce about 127,604 pounds of garbage in your lifetime, so recycle
- 3. Paper Recycling Paper can be recycled up to seven times, however each time during the recycling process, fibres are subjected to mechanical processes which result in the decreasing of their mechanical properties.
- 4. Uses For Recycled Paper There are many different products manufactured by the paper industry. Next to the typical ones known from everyday life such as sheets of printing paper, newspaper, or cardboard. Several products have properties that make them suitable for application in architectural structures. These are paperboard, corrugated cardboard, honeycomb panels, and paper tubes.
- 5. Recycled paper in architecture An interesting example, created by Herbert Yates and developed by Sanform Hirsen and Sym van der Ryn in 1966 was Plydome. The structure was made of 10 mm thick paperboard panels filled with polyurethane foam and waterproofed with a polyethene film from the outside. The panels were transported as a flat package and unfolded on site along the parallel valley and mountain folds. Two panels were connected to each other, enclosed with end walls, and anchored to the
- 6. How to Recycle The paper you put in your recycling bin must be clean. Food waste, grease and other contaminants cause problems in the recycling machinery. Junk mail, magazines, printer paper, cardboard and newspapers can all be recycled. Although recycling companies usually provide guidelines as to what they do and don't take, some paper items are not recyclable. Paper with a plastic, chemical or wax coating cannot be recycled. This includes photographs, wax paper, frozen food boxes and bubble-lined mailing envelopes. Tissues and paper towels are also not included in most recycling programs.Put paper out on the curb on recycling day and follow all rules regarding weight limits and where to place the bin to ensure the recycling gets taken.
- 7. Why Recycle Benefits of Paper Recycling The environmental benefits of paper recycling are many. Paper recycling: ● Reduces greenhouse gas emissions that can contribute to climate change by avoiding methane emissions and reducing energy required for a number of paper products. ● Extends the fiber supply and contributes to carbon sequestration. ● Saves considerable landfill space. ● Reduces energy and water consumption. ● Decreases the need for disposal (i.e., landfill or incineration which decreases
- 8. Recycling Process The process of recycling paper begins with individual users (homes, businesses, universities, industrial manufacturers) that collect and store paper waste in bins. Recyclers and paper merchants collect this paper and combine it together in a large recycling container.
- 9. Recycling Process Upon arrival at the recycling facility, the quantity and quality (cleanliness and type) of the paper is measured and a purchase contract is issued to the recycler. These measurements of paper quality are also used to determine whether the type of waste paper is accepted or rejected; some recyclers accept mixed grades of recovered paper, while others only accept preferred quality of waste paper grades
- 10. Recycling process The paper is then shredded to break down the material into small bits. After the material in finely shredded, a large amount of water is added along with other chemicals such as hydrogen peroxide, sodium hydroxide, and sodium silicate to break down and separate the fibers of the paper. This process of transforming the recovered paper materials to pulp is known as pulping.It is then passed through a series of screens, and a centrifuge-like process to remove larger contaminants such as paper clips, staples, and tape.
- 11. Recycling process The 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.Dyes are sometimes added to create colored products.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
- 12. Recycling Process 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.Next, the sheets pass through steam heated rollers, at temperatures as high as 130 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. 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.
- 14. credits Carole Conant background sciencing united states environmental protection agency green tumble science direct