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Presentation on Green chemistry by somin
- 1. By:- Somin Dey somindey
- 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 somindey
- 4. somindey
- 5. Birth of Green Chemistry Environmental Problems and active prevention of pollution gave Birth to Green Chemistry somindey
- 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 somindey
- 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. somindey
- 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 . somindey
- 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 somindey
- 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 somindey
- 13. Green Chemistry Used in our Day to Day Life Now instead of the Toxic Cancer causing Chemical perchlorothylene liquefied Carbon dioxide is used D R Y G R E E N C L E A N I N G somindey
- 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 somindey
- 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. somindey
- 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. somindey
- 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 somindey
- 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. somindey
- 19. • www.google.com • www.yahoo.com • www.wikipedia.com • www.epa.gov somindey