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Students:
 Gonzalo Santa Clara
 Franco Perino
 Daniel Gerber
Environmental impact of paper
The production and use of paper has a number of adverse effects on the
environment.
Worldwide consumption of paper has risen by 400% in the past 40 years
leading to increase in deforestation, with 35% of harvested trees being used
for paper manufacture. Logging of old growth forests accounts for less than
10% of wood pulp, but is one of the most controversial issues.
Paper waste accounts for up to 40% of total waste produced in the United
States each year, which adds up to 71.6 million tons of paper waste per year
in the United States alone.
Conventional bleaching of wood pulp using elemental chlorine produces and
releases into the environment large amounts of chlorinated organic
compounds, including chlorinated dioxins. Dioxins are recognized as a
persistent environmental pollutant, regulated internationally by
the Stockholm Convention on Persistent Organic Pollutants. Dioxins are highly
toxic, and health effects on humans include
reproductive, developmental, immune and hormonal problems. They are
known to be carcinogenic. Over 90% of human exposure is through
food, primarily meat, dairy, fish and shellfish, as dioxins accumulate in the
food chain in the fatty tissue of animals.
How paper is recycled:
1. Paper is taken from the bin and deposited in a large recycling container
along with paper from other recycling bins.
2. The paper is taken to a recycling plant where it is separated into types
and grades.
3. The separated paper is then washed with soapy water to remove inks,
plastic film, staples and glue. The paper is put into a large holder where
it is mixed with water to create ‘slurry’.
4. By adding different materials to the slurry, different paper products can
be created, such as cardboard, newsprints or office paper.
5. The slurry is spread using large rollers into large thin sheets.
6. The paper is left to dry, and then it is rolled up ready to be cut and sent
back to the shops.
Paper

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Paper

  • 1. Students:  Gonzalo Santa Clara  Franco Perino  Daniel Gerber
  • 2. Environmental impact of paper The production and use of paper has a number of adverse effects on the environment. Worldwide consumption of paper has risen by 400% in the past 40 years leading to increase in deforestation, with 35% of harvested trees being used for paper manufacture. Logging of old growth forests accounts for less than 10% of wood pulp, but is one of the most controversial issues. Paper waste accounts for up to 40% of total waste produced in the United States each year, which adds up to 71.6 million tons of paper waste per year in the United States alone. Conventional bleaching of wood pulp using elemental chlorine produces and releases into the environment large amounts of chlorinated organic compounds, including chlorinated dioxins. Dioxins are recognized as a persistent environmental pollutant, regulated internationally by the Stockholm Convention on Persistent Organic Pollutants. Dioxins are highly toxic, and health effects on humans include reproductive, developmental, immune and hormonal problems. They are known to be carcinogenic. Over 90% of human exposure is through food, primarily meat, dairy, fish and shellfish, as dioxins accumulate in the food chain in the fatty tissue of animals.
  • 3. How paper is recycled: 1. Paper is taken from the bin and deposited in a large recycling container along with paper from other recycling bins. 2. The paper is taken to a recycling plant where it is separated into types and grades. 3. The separated paper is then washed with soapy water to remove inks, plastic film, staples and glue. The paper is put into a large holder where it is mixed with water to create ‘slurry’. 4. By adding different materials to the slurry, different paper products can be created, such as cardboard, newsprints or office paper. 5. The slurry is spread using large rollers into large thin sheets. 6. The paper is left to dry, and then it is rolled up ready to be cut and sent back to the shops.