The Best Solutions for Green Life
The Best Solutions for Green Chemistry
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Green Chemistry
Oct 24Green chemistry, also called sustainable chemistry, is a philosophy to chemistry and engineering that drive product design and processes that minimize the use and generation of hazardous substances while environmental chemistry is the chemistry of the natural environment and 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 helps to create a modus operandi for dealing with pollution in an original and innovative way. It aims to avoid problems before they occur.
As a philosophy of chemistry, green chemistry applies to organic chemistry,inorganic chemistry, biochemistry, analytical chemistry, and even physical chemistry. While green chemistry seems to focus on industrial applications, it does not apply to any chemical choice. The focus is on minimizing danger and maximizing the efficiency of any chemical choice. This is different from the chemical environment that focuses on chemical phenomena in the environment.The use of supercritical carbon dioxide as green solvent peroxide, liquid hydrogen to clean the oxidation and the use of hydrogen in asymmetric synthesis. Examples of applied green chemistry are supercritical water oxidation, the reaction of water, and dry media reactions.Biotechnology is also seen as a promising technique for achieving green chemistry goals. A number of important chemical processes can be synthesized in engineered organisms, such as shikimate, a precursor of Tamiflu that is fermented by Roche in bacteria. These principles include such concepts as:
design process to maximize the amount of raw materials that end up in the product; the use of safe, environmentally-benign substances, including solvents, if possible; energy efficient process design;
The best form of waste disposal: not to create it in the first place.The 12 principles are:
It is better to prevent waste than to treat or clean up waste after forming.
Synthetic methods should be designed to maximize the incorporation of all materials used in the process into the final product.
Wherever practicable, synthetic methodologies should be designed to use and generate substances with little or no toxicity to human health and the environment.
Chemical products should be designed to preserve the success of the function while reducing toxicity. The use of additives (eg solvents, separation agents, etc.) should be made unnecessary wherever possible and innocuous when used.
Energy needs to be recognized for the environmental and economic impacts and should be minimized. Synthetic methods should be performed at ambient temperature and pressure. A raw material or feedstock should be renewable rather than spend wherever technically and economically feasible. Reduce derivatives – unnecessary derivatization (blocking group, protection / deprotection, temporary modification) should be avoided as much as possible. Catalytic reagents (as selective as possible) are superior to stoichiometric reagents.Chemical products should be designed so that at the end of the function they do not survive in the environment and break down into harmless degradation products. Analytical methodologies need to be further developed to allow for real-time, in the process of monitoring and control prior to the formation of harmful substances. Substance and form a substance used in chemical processes should be chosen to minimize the potential for chemical accidents, including releases, explosions, and fires.
