This document outlines learning objectives and provides information on the evolution, history, and principles of green chemistry. It discusses key events that prompted the development of green chemistry like the Cuyahoga River fire and Bhopal disaster. It defines green chemistry and its goal of reducing pollution by designing chemical products and processes that are less hazardous. The 12 principles of green chemistry are presented, which aim to prevent waste and maximize atom economy. Examples of conventional versus green syntheses are provided. Finally, applications of green chemistry and a concluding statement about reducing costs and risks are discussed.
3. Learning Objectives
Evolution, History & Ideology of Green Chemistry
Pollution Prevention Act
Father of Green Chemistry
Green Chemistry vs. Environmental Chemistry
Principles of Green Chemistry
Examples
Applications
Conclusion
4. Evolution of Green Chemistry
1. Cuyahoga River Fire (1969)
▪ River caught fire due to Highly Volatile Petroleum Derivatives.
▪ $50,000 Damage in 1969 & $1.5 million in 1952.
5. Evolution of Green Chemistry
2. Seveso Chemical Plant (1976)
▪ Clouds of TCDD* escaped from a small plant.
▪ Over 80,000 domestic animals were killed.
▪ 22,000 victims of cancer, chromic dermatitis, neuropathy & deformed babies.
▪ Contamination of 1,800 hectares of land.
* Tetrachlorodibenzo-p-dioxin
6. 3. Bhopal Pesticide Plant (1984)
Evolution of Green Chemistry
▪ 30 tons of Highly Toxic gas (methyl iso-cyanate).
▪ Some 8,000 deaths in the first weak leading to 15,000 deaths within the year.
▪ Birth of Physically and mentally disabled children.
60,000 people were exposed to deadly gas at night.
7. Pollution Prevention Act (1990)
History of Green Chemistry
According to the act, it is the policy of the United States that pollution should be
prevented or reduced at the source.
Paul Anastas is known widely as the “Father of Green Chemistry”.
Father of Green Chemistry
Paul Anastas and John C. Warner co-authored the groundbreaking
book, Green Chemistry: Theory and Practice in 1998.
8. New Synthetic Approaches
Green
Chemistry
Eco Friendly
Reaction
Conditions
Minimum
Eergy
Utilization
Design of
Less Toxic
Chemicals
Inherently
Safer
Chemicals
Ideology
of
Green
Chemistry
10. Environmental Chemistry
Environmental chemistry can be defined as the study of the sources, reactions,
transport, effects, and fates of chemical species in the air, soil, and water
environments; and the effect of human activity on these.
Green Chemistry
Green chemistry reduces pollution at its source by minimizing or eliminating the
hazards of chemical feedstock, reagents, solvents, and products.
Cleaning-up-Pollution
Remediation involves treating waste streams or cleanup of environmental spills
and other releases.
11. Examples of Green Chemistry
Conventional Method of Ibuprofen Synthesis
Produces only 40% Ibuprofen and 60% Wastes.
4-isobutylacetophenone a,b-epoxy ester
Aldoxime
Isobutyl benzene
Nitrile
Ibuprofen
Green Synthesis of Ibuprofen
80% Atom Efficiency, Just 20% Wastes
Isobutyl benzene 4-isobutylacetophenone Alcohol
Ibuprofen
12. Examples of Green Chemistry
New synthesis of Ibuprofen
Replacing Arsenic and Chromate from wood (Lumber)
Many new Pesticides
New oxidants for Bleaching paper and Disinfecting water
Replacing Lead paints with eco-friendly paints
Replacing VOCs and chlorinated solvents
13. Application of Green Chemistry
1) Eco-Friendly Dry clean-up of
Clothes
2) Solution to Turn Turbid water
Clear
3) Solar Array
4) Reusable Water Bottle
5) Solar Water Heater
6) Wind Generator
7) Rainwater Harvesting System
8) Insulation Of House
9) Building with Green Technology
14. Conclusion:
“Green Chemistry is a way to reduce costs, as well as environmental, health and safety risks .
Applications of the 12 guiding principles are found to be minimizing waste and risk to metrics that
quantify waste and process efficiency.”
