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Green Chemistry Principles |
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If we would have to choose the two most influential terms of green technology in our epoch – they would, without doubt, be carbon emission reduction and sustainable growth. Green, or sustainable growth decreases greenhouse gases and environment pollution – adding an extra benefit of leaving what our future generation needs behind. At the same time, we can strengthen our selves by maintaining the development of our present economy. What we need in our lives is energy and matter, and matter is created by chemistry. So does energy, which is an outcome of chemical equations or the combination of different raw materials. Hence, green growth depends on the desire to process such chemicals in an eco-friendly way, as well as change them into sustainable materials. Today, our planet is home to more than 7,000,000,000 people. Although there are discrepancies between nations and their inhabitants, we are generally enjoying a rather plentiful, healthy life that couldn?t have been possible only a few hundred years ago. Such a life has come to reality after the 19th century, in which chemistry started to develop and create fertilizers, medicine, plastic, and other industrial equipment. Yet if there?s a bright side to the development of technology, there?s always the opposite artificially made chemical materials eventually end up toxic, and the environment is significantly affected while carrying out these chemical processes. There is a lack of natural resources, and people are starting to believe that modern chemistry is the reason why we are facing environmental difficulties. And that?s not an overstatement. One-third of the toxic waste of the world comes from industries. Still, life without man-made materials or changes made to natural materials seems to be quite tough. Thus, it is necessary to maintain the benefits that chemistry provides us, and balance it with the amount of toxic waste we are producing, or the amount of natural resources that are being depleted at the moment. In 1998, Paul T. Anastas and John C. Warner established the 12 main principles for green chemistry. THESE ARE THE PRINCIPLES:
Considering this, we must do more to sustain green chemistry than simply educate the public about it. The people who study chemistry and take part in chemical industry should understand that our race coexists with the environment. We must believe that we can use chemistry for the success of our future generations, and be provided with sufficient knowledge about how chemical materials can affect our environment. |
 
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Previous : Green living products in life
8 Comments
Reduction of Toxic substances is the key to Green chemistry.
Well written Ryu.
Also thanks to Keoleboge for presenting 12 green chemistry principles to us.
Posted 31-12-2014 19:02
@Keoleboge, Wow, thank you so much for the additional information! I was wondering about the 12 principles and you solved it :)
And guys, thank you for your supportive comments also :)
Posted 30-12-2014 10:56
@Gaa Bhin- Thank you for sharing the 12 Green Chemistry Principles, they are informative and as you mentioned one third of the toxic waste generates form industries so green chemistry principles hold its importance. I agree with Christy, we are surrounded by petrochemical substances. So it is necessary to utilize chemistry for sustainable growth through green principles.
Posted 30-12-2014 09:56
Green Chemistry or sustainable chemistry encourages the designs of products and processes that minimise the use and generation of hazardous substances.It rather reduces the negative impact of chemistry on environment. Therefore , Green Chemistry should be taught , practised and implemented in all industries. Thanks for sharing report on very interesting topic.
Posted 30-12-2014 02:03
I agree with you Christy. Most resources used in chemistry are toxic and can degrade human health in many ways. Green chemistry principles will not only reduce carbon emissions but will also be less harmful health-wise for humans. After all, it is thanks to green chemistry that we were able to obtain biofuels like ethanol. Thanks for enlightening us on this interesting topic, Gaa Bin Ryu:)
Posted 29-12-2014 18:01
I love green chemistry principles.
Green Chemistry is a relatively new emerging field that strives to work at the molecular level to achieve sustainability. The field has received widespread interest in the past decade due to its ability to harness chemical innovation to meet environmental and economic goals simultaneously. Green Chemistry has a framework of a cohesive set of Twelve Principles:
1.Prevention
It is better to prevent waste than to treat or clean up waste after it has been created.
2.Atom Economy
Synthetic methods should be designed to maximize the incorporation of all materials used in the process into the final product.
3.Less Hazardous Chemical Syntheses
Wherever practicable, synthetic methods should be designed to use and generate substances that possess little or no toxicity to human health and the environment.
4.Designing Safer Chemicals
Chemical products should be designed to affect their desired function while minimizing their toxicity.
5.Safer Solvents and Auxiliaries
The use of auxiliary substances (e.g., solvents, separation agents, etc.) should be made unnecessary wherever possible and innocuous when used.
6.Design for Energy Efficiency
Energy requirements of chemical processes should be recognized for their environmental and economic impacts and should be minimized. If possible, synthetic methods should be conducted at ambient temperature and pressure.
7.Use of Renewable Feedstocks
A raw material or feedstock should be renewable rather than depleting whenever technically and economically practicable.
8.Reduce Derivatives
Unnecessary derivatization (use of blocking groups, protection/ deprotection, temporary modification of physical/chemical processes) should be minimized or avoided if possible, because such steps require additional reagents and can generate waste.
9Catalysis
Catalytic reagents (as selective as possible) are superior to stoichiometric reagents.
10.Design for Degradation
Chemical products should be designed so that at the end of their function they break down into innocuous degradation products and do not persist in the environment.
11.Real-time analysis for Pollution Prevention
Analytical methodologies need to be further developed to allow for real-time, in-process monitoring and control prior to the formation of hazardous substances.
12.Inherently Safer Chemistry for Accident Prevention
Substances and the form of a substance used in a chemical process should be chosen to minimize the potential for chemical accidents, including releases, explosions, and fires.
*Anastas, P. T. Warner, J. C. Green Chemistry: Theory and Practice, Oxford University Press: New York, 1998, p.30. By permission of Oxford University Press.
Posted 29-12-2014 16:58
Green Chemistry Principles is really beneficial for the co-existence of environment and the people but at the same time it doesnt seem to be easily applicable.We are already surrounded by hazardous chemistry everywhere as Christy said.
Thanks for sharing Gaa. :)
Posted 29-12-2014 12:03
Most of goods using chemistry is toxic. And many are carcinogenic. Worse is we are surrounded by petrochemical substances. So, knowing green chemistry principles is important for our healthy life. Find out anything around you which doesn't contain petrochemical substances. You will be very shocked at the result.
Posted 29-12-2014 09:50