Green Chemistry
21.10 | 
Diposting oleh
Awal
Green chemistry, also called sustainable chemistry, is a chemical philosophy encouraging the design of products and processes that reduce or eliminate the use and generation of hazardous substances. Whereas environmental chemistry is the chemistry of the natural environment, and of pollutant chemicals in nature, green chemistry seeks to reduce and prevent pollution at its source. In 1990 the Pollution Prevention Act was passed in the United States. This act helped create a modus operandi for dealing with pollution in an original and innovative way. It aims to avoid problems before they happen.
As a chemical philosophy, green chemistry derives from organic chemistry, inorganic chemistry, biochemistry, analytical chemistry, and even physical chemistry. However, the philosophy of green chemistry tends to focus on industrial applications. Click chemistry is often cited as a style of chemical synthesis that is consistent with the goals of green chemistry. The focus is on minimizing the hazard and maximizing the efficiency of any chemical choice. It is distinct from environmental chemistry which focuses on chemical phenomena in the environment.
In 2005 Ryoji Noyori identified three key developments in green chemistry: use of supercritical carbon dioxide as green solvent, aqueous hydrogen peroxide for clean oxidations and the use of hydrogen in asymmetric synthesis.[1] Examples of applied green chemistry are supercritical water oxidation, on water reactions and dry media reactions..
Bioengineering is also seen as a promising technique for achieving green chemistry goals. A number of important process chemicals can be synthesized in engineered organisms, such as shikimate, a Tamiflu precursor which is fermented by Roche in bacteria.
From: http://en.wikipedia.org/wiki/Green_chemistry
As a chemical philosophy, green chemistry derives from organic chemistry, inorganic chemistry, biochemistry, analytical chemistry, and even physical chemistry. However, the philosophy of green chemistry tends to focus on industrial applications. Click chemistry is often cited as a style of chemical synthesis that is consistent with the goals of green chemistry. The focus is on minimizing the hazard and maximizing the efficiency of any chemical choice. It is distinct from environmental chemistry which focuses on chemical phenomena in the environment.
In 2005 Ryoji Noyori identified three key developments in green chemistry: use of supercritical carbon dioxide as green solvent, aqueous hydrogen peroxide for clean oxidations and the use of hydrogen in asymmetric synthesis.[1] Examples of applied green chemistry are supercritical water oxidation, on water reactions and dry media reactions..
Bioengineering is also seen as a promising technique for achieving green chemistry goals. A number of important process chemicals can be synthesized in engineered organisms, such as shikimate, a Tamiflu precursor which is fermented by Roche in bacteria.
From: http://en.wikipedia.org/wiki/Green_chemistry
How does chemistry affect our daily lives?
Chemistry is everywhere, and we use all the time in our daily lives, probably without knowing it.
Here are some things that wouldn't be possible without the field of chemistry.
No plastic. That's no plastic bags, no CDs or DVDs, no iPods, no plastic silverware or plastic cups and plates, no scotch tape, no styrofoam, no synthetic fabics (like nylon, fleece, rayon, and kevlar). Most of your car is made of plastic too.
No gasoline. No driving fancy cars!
No pharmaceuticals. Modern medicine wouldn't exist. No aspirin, no pain killers!
No water purification. Drinking water would make you sick half the time. Most of sewage treatment is done using chemistry.
No synthetic fertilizers. Farming and food production wouldn't be nearly as productive and starvation would be a massive problem. Insecticides are also made by chemists.
No paint. No cosmetics. No processed foods. No air conditioning. No refrigeration. No soap and cleaning products. No photography. No televisions. No radios. No computeres. No glue. No batteries. No electricity in your house.
There's probably nothing you've done today that wasn't made thanks to chemistry. You'd pretty much have to go back to living in a cave to get away from it!
From: http://wiki.answers.com/Q/How_does_chemistry_affect_our_daily_lives
Here are some things that wouldn't be possible without the field of chemistry.
No plastic. That's no plastic bags, no CDs or DVDs, no iPods, no plastic silverware or plastic cups and plates, no scotch tape, no styrofoam, no synthetic fabics (like nylon, fleece, rayon, and kevlar). Most of your car is made of plastic too.
No gasoline. No driving fancy cars!
No pharmaceuticals. Modern medicine wouldn't exist. No aspirin, no pain killers!
No water purification. Drinking water would make you sick half the time. Most of sewage treatment is done using chemistry.
No synthetic fertilizers. Farming and food production wouldn't be nearly as productive and starvation would be a massive problem. Insecticides are also made by chemists.
No paint. No cosmetics. No processed foods. No air conditioning. No refrigeration. No soap and cleaning products. No photography. No televisions. No radios. No computeres. No glue. No batteries. No electricity in your house.
There's probably nothing you've done today that wasn't made thanks to chemistry. You'd pretty much have to go back to living in a cave to get away from it!
From: http://wiki.answers.com/Q/How_does_chemistry_affect_our_daily_lives
Download Free Chemistry and Physics Books and Flash Animation
Download Free Chemistry and Physics Books and Flash Animation...
You can download FREE chemistry and physics book in this blog. Beside e-book you also can download free animation flash. List of chemistry animation:
I wish, in the next future this blog can be usefull to all. Amin...
You can download FREE chemistry and physics book in this blog. Beside e-book you also can download free animation flash. List of chemistry animation:
- Le Chatelier Principles
- Rutherford Animation
- Formation of Solution
- Properties of gases
- Hydrogen Spectrum
- Limiting Reagent
- Activation Energy
- Atomic radii
- Buffer solution
- Hibridization
- ionization of acid
- Collosion oriented
- Radioactive
- Volta cell
- coming soon......
I wish, in the next future this blog can be usefull to all. Amin...
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