Green chemistry is the research and engineering of products and processes to minimalize the use of and production of hazardous substances. Green chemistry seeks to reduce and prevent pollution at its source.
The twelve principles of green chemistry were developed by Paul Anastas (who also coined the term ‘Green Chemistry’) and John C. Warner. The principles cover concepts such as:
* The design of processes to maximize the amount of raw materials used in the end product.
* The use of safe environmentally-friendly substances including solvents whenever possible.
* The design of energy efficient processes.
* A lack of waste product created in the process.
The twelve principles are:
1. It’s better to prevent waste than to treat/ clean up waste after it’s formed.
2. Synthetic methods should be designed to maximize the incorporation of all materials used in the process into the final product.
3. Wherever possible, synthetic methodologies should be designed to use and generate substances that possess little or no toxicity to human health and the environment.
4. Chemical products should be designed to preserve efficacy of function while reducing toxicity.
5. The use of auxiliary substances (e.g. solvents, separation agents) should be made unnecessary wherever possible and harmless when used.
6. Energy requirements should be recognized for their environmental and economic impacts and should be minimized. Synthetic methods should be conducted at ambient temperature and pressure.
7. A raw material or feed stock should be renewable rather than depleting wherever technically and economically practicable.
8. Reduce derivatives –unnecessary derivation (blocking group,... [continues]
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