BCB311

Monday, February 27, 2006

Fwd: WHAT IS RECYCLING AND WHAT IS THE SIGNIFICANCE OF RECYCLING PAPER? WHAT HAPPENS TO PAPER DURING THE

Recycling is the processing of waste products so that it can be re-used. Cans, newspapers and glass can be recycled. Recycling helps the environment because there are less trees being cut down to make paper. The cans are melted down and used to make new cans. The old newspapers are turned into pulp and then into clean newsprint. The ground-up glass is an important ingredient in road building materials. A special process melts tyres during which chemicals like oil and gas are given off.

Paper recycling starts with a pulping process. All the waste paper is out into a large container called a pulper. The process of turning the paper into pulp involves water and chemicals in the pulper that remove the ink from paper and in turn making the soft and wet. The pulp is placed in a whirling cylinder to remove solid objects like staples and paper clips. Then a primary water removal process follows where a machine squeezes the pulp, separating it from all chemicals, ink, and dirty water that were flowing with it.

The pulp through vibrating screens and is given a final wash on rollers to remove the unwanted material. The clean pulp is mixed with clean water in a machine until it becomes a thick white substance. This is spread evenly into a thin layer and is heated, dried, and smothered on a series of rollers. As material dries it forms a sheet of clean paper. And the finished paper is put on rolls, cut and then packaged.

http://www.afandpa.org/Content/NavigationMenu/Environment_and_Recycling/Recycling/Recycling.htm

http://www.recycle.cc/freepapr.htm


NCUMISA MNOTOZA
Environmental and Water Sciences
2253897@uwc.ac.za
 
NCUMISA MNOTOZA
Environmental and Water Sciences
2253897@uwc.ac.za

1 Comments:

  • Sounds like a lot of energy is required to re-cycle paper - have you examined this aspect. Re-cycled paper is often not as good as normal paper and is actually quite expensive - what incentives could be used to stimulate use of re-cycled paper? A little more analysis and feasability needs to be provided to answer your title.

    By Anonymous Rich, at Saturday, March 18, 2006 1:19:00 am  

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