02-05-2012, 03:38 PM
Green Chemistry
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DEFINITION
Green Chemistry is the utilisation 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 .
GREEN CHEMISTRY IS ABOUT
Waste Minimisation at Source
Use of Catalysts in place of Reagents
Using Non-Toxic Reagents
Use of Renewable Resources
Improved Atom Efficiency
Use of Solvent Free or Recyclable Environmentally Benign Solvent systems
Why do we need Green Chemistry
Chemistry is undeniably a very prominent part of our daily lives.
Chemical developments also bring new environmental problems and harmful unexpected side effects, which result in the need for ‘greener’ chemical products.
A famous example is the pesticide DDT.
Food Supply
While current food levels are sufficient, distribution is inadequate
Agricultural methods are unsustainable
Future food production intensity is needed.
Green chemistry can address many food supply issues
Use of pesticides will affect environment by emitting by products