Green Chemistry is the utilization of a set of principles that reduces or eliminates the use or generation of hazardous substances in the design, manufacture and application of chemical products .
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2. Hare Krishna
GREEN CHEMISTRY
“Chemistry does not mean only chemical it also means something new
from green, green if invented can save the greenery of the environment.”
By:- Somin Dey somindey
3. 01
What is Green Chemistry ?
02
Birth of Green Chemistry
Contents
03
Green Chemistry is about
04
Father of Green Chemistry
05
Principles of Green Chemistry
06
Benefits of Green Chemistry
07
Future scope of Green Chemistry
08
Bibliography
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8. Father of Green Chemistry
Dr. Paul Anastas and Dr. John Warner who outlined
Twelve Principles of Green Chemistry in 1998.
Dr. Paul Anastas Dr. John Warner
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9. Principle
12
321
Prevention:
It is better to
prevent waste
than to treat or
clean up waste
Atom
Economy:Synthetic
methods
should be
designed
to maximize
the
proportion ofall
materials.
Catalysis.
Catalytic
reagent
s
Generate lesser
waste.
4
Safer Chemicals :
Chemical
products
should be
designed to
improve their
design function
while
minimizing
their toxicity.
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10. Principle
12
876
Use of Renewable
Feedstocks.
The raw material
should be
renewable
rather than
depleting
whenever
technically
and economically
practical.
Reduce
Derivatives.
Derivatization
should be
avoided
if possible,
because
such steps
require
additional
reagents
and can generate
waste .
Less Hazardous
ChemicalSynthesis
synthetic method
should be designed
to use and generate
substances thatposses
little ornotoxicity
Whenever pragmetic
12
5
Safer Solvents
and Auxiliaries :
The use of auxiliary
substances should
Be made unnecessary
wherever possible .
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11. 12
109
Design for
Degradation.
Chemical products
should be
designed so that
at the end of their
function they
break down into
harmless
products.
Real-time
Analysis for
Pollution
Prevention.Analytical
methodologies
need
tobe further
developed
to allow for real-
time,
in-process
monitoring
and control prior
to
the formation of
hazardous
substances.
1
1
Inherently Safer
Chemistry for
Accident
PreventionSubstances and
the
form of a
substance
used in a
chemical
process should be
chosen to
minimize
the potential for
chemical
accidents,
1
2
Design for Energy
Efficiency :
Energy requirements
of chemical processes
should be minimized.
If
possible, synthetic
methods
should
be conducted at room
temperature
Principle
12
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12. Benefits of Green Chemistry
Cleaner Air Cleaner Water
Less release of hazardous
chemicals to air leading to less
damage to lungs
Less release of hazardous chemical wastes
to water leading to cleaner drinking and
recreational water
For Human Health
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13. Green Chemistry Used in our Day to
Day Life
Now instead of the Toxic Cancer
causing Chemical perchlorothylene
liquefied Carbon dioxide is used
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14. Proctor and Gamble is synthesizing a paint made of soya
oil and sugar to replace the regular paints(for houses). It
will not produce the toxic fumes and is safer to use.
Green Chemistry in Paints
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15. Green Chemistry in Computer Technology
To manufacture computer chips, they quite often had
to use a lot of chemicals and fossil fuels to make one
chip. This resulted in a lot of wastage. Researchers
came up with a method using supercritical carbon
dioxide to make the chip and it significantly reduced
the amount of raw material and energy required.
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16. Green Chemistry in Protecting Environment
BASF is currently developing a bag made of a material
called ECOFLEX which is synthesized from cassava and
calcium carbonate. The bags are tear resistant, puncture
resistant, waterproof, elastic and can be written on. Using
these bags in the kitchen is ideal as they decompose
overtime when place in municipal compost system.
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17. Now Prepared in three steps. Where 77% of atoms are used
Earlier it was a six step process with 40% of atoms.
Annually 2 billion of Ibuprofen is manufactured
Synthesis of Ibuprofen
Green Chemistry in Pharmaceutical
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18. Future scope of Green
Chemistry
It is a new trend to design safer chemicals and processes. It
will minimize the negative impact of chemicals on the human
health & environment .It will also help in achieving
sustainability in the chemical production. The desire of
chemists to make products that are effective and economical
will expand the scope of Green Chemistry.
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