Scope of Green Chemistry (original) (raw)

Fate and Perspective of Green Chemistry for Sustainable Era

Review paper, 2012

Green chemistry is placed in the frontier areas of research to design the processes that reduce or eliminate the use and generation of hazardous substances. It is accepted that most of today's industry is unsustainable by design so there is an urgent need for more environmentally acceptable processes in the chemical industries. Green chemistry launch new technologies that are cleaner and economically competitive rather than accepting waste generation and disposal as unavoidable. Green chemistry provides 12 green paths for different synthetic routes using non-hazardous solvents and environmental-friendly chemicals. The attractive concept of green chemistry is solvent free reactions. Solvent free reactions can be accelerating by microwave activation. At present, most widely used new alternative solvents are ionic liquids and supercritical fluids. In green chemistry, the concept of atom economy is to conduct chemical reaction where all the atoms that go into process come out either incorporated in the products or marketable side products. Photochemistry and electrochemistry are also green chemistry methods leaving no or less residue to be removed in the workup of a reaction. The major aim of this article is to discuss emerging trends in environment management to solve the burning environmental problem with continues progress in development.

GREEN CHEMISTRY : NEED OF 21 st CENTURY

Over the past few years, the chemistry community has been mobilized to develop new chemistries that are less hazardous to human health and the environment. This new approach has received extensive attention and goes by many names including green chemistry, environmentally benign chemistry, clean chemistry, atom economy and Benign by design chemistry. Simply stated, Green Chemistry is the use of chemistry techniques and methodologies that reduce or eliminate use or generation of feed stock, products, by-products, solvents, reagents etc. that are hazardous to human health or environment Green Chemistry, that possess the spirit of sustainable development was booming in 1990 and has attracted more and more interest in 21 st century. The study of organic reactions from the point of view of its greenness must have in mind 1 st of all that a general synthetic method must be based on complete and efficient conversions of well defined selectivity and that greenness is more a term for comparison than an absolute kind of qualification. The 12 principles of green chemistry are summarized as:

Applications of Green Chemistry in Sustainable Development

INTERNATIONAL RESEARCH JOURNAL OF PHARMACY, 2013

Chemistry is really very helpful to us as its applications are used worldwide for several purposes. We cannot really imagine a world without chemistry and its applications such as medicines. However, we should now concentrate on green chemistry or sustainable chemistry, which refers to reducing or stopping the damage done to the environment around us. Hence, green chemistry could include anything from reducing waste to even disposing of waste in the correct manner. Another way to save the environment through sustainable chemistry is to make use of renewable food stocks. Yet another good move is to make use of catalysts in experiments rather than using stoichiometric reagents. Chemical derivatives must be avoided as far as possible in any type of application as they often prove to be harmful. All chemical wastes should be disposed of in the best possible manner without causing any damage to the environment and living beings. We have to develop materials that will aid in the infusion of green chemistry into the curriculum such as green chemistry laboratory experiments and short courses on green chemistry. This article presents a brief description on green chemistry principles and its developments.

Review on Green Chemistry and Catalysis

International Journal of Advanced Research in Science, Communication and Technology

Green chemistry, also known as sustainable chemistry, refers to the development of chemical products and processes that minimize or exclude the operation and product of dangerous composites. They only use environmentally friendly chemicals and chemical procedures. It is erected on twelve principles that can be used to develop or reproduce motes, accoutrements , responses, and processes that are safer for mortal health and the terrain from the ground over. Green Chemistry decreases the environmental impact of chemical processes and technologies, as demonstrated in this composition. The thing of this exploration is to learn further about the part of catalysts in green chemical conflation for a further sustainable future. In the ecologically friendly conflation of novel and being composites, catalysis plays a critical part. Catalyzed processes bear lower energy to produce and produce smaller by- products, co-products, and other waste particulars, indicating increased effectiveness. Cat...

Review of 12 Principles of Green Chemistry in Practice

International Journal of Sustainable and Green Energy

This paper provides an overview of aplicability 12 principles and future trends of Green Chemistry. Green or Sustainable Chemistry is a term that refers to the creation of chemical products and processes that reduce or eliminate the use and production of harmful substances. They are used exclusively chemicals and chemical processes that do not have negative consequences for the environment. It is based on twelve principles that can be used to initially create or recreate molecules, materials, reactions and processes that are safer for human health and the environment. The processes of the Green Chemistry that have been developed to date include almost all areas of chemistry, including organic, inorganic, biochemistry, polymer, toxicology, environmental, physical, technological, etc. Through the several prevailing trends of the green program such as catalysis, biocatalysis and the use of alternative: renewable feedstock (biomass), reaction media (water, ionic liquids and supercritical fluids), reaction conditions (microwave irradiation) and new synthetic pathways (photocatalytic reaction), the dual goals-environmental protection and economic benefit can be achieved. This article shows examples of the prevailing trends in ways that Green Chemistry reduces the impact of chemical processes and technologies on the environment.

Commentary: What is Green Chemistry? an overvieW

Green chemistry focuses on the reduction, recycling, and/or elimination of the use of toxic and hazardous chemicals in production processes by finding creative, alternative routes for making the desired products that minimise the impact on the environment. Green chemistry is a more eco-friendly green alternative to conventional chemistry practices. The green chemistry movement is part of a larger movement ultimately leading to a green economy- namely sustainable development, sustainable business and sustainable living practices. Green chemistry can contribute to achieving sustainability in three key areas. First, renewable energy technologies will be the central pillar of a sustainable hightechnology civilisation. Second, the reagents used by the chemical industry. Third, polluting technologies must be replaced by benign alternatives. The aim of the present article is to acquaint the academicians, researchers, scientists, and engineers with values and positive impact of green chemistry in innovation, application and technology.

Green Chemistry: Principles, Applications, and Disadvantages

Chemical Methodologies, 2020

This work provides an overview on applicability of 12 principles of green chemistry. Green chemistry is a term that indicates the creation of chemical products and procedures that reduces the use and production of harmful materials. The goals of green chemistry for protecting the environment can be achieved via several main directions. Some of them are bio-catalysis, use of alternative repeatable raw materials (biomass), alternative reaction solution (such as ionic liquids, supercritical fluids, water), alternative reaction circumstances (microwave activation) as well as to new photocatalytic reactions. Moreover, keep natural resources on earth without using harmful materials is the main objective of green chemistry. By changing patterns of consumption and production, steps are being taken to decrease the pollution and harmful waste, which considered being one of the important goals of green chemistry. Also, it was found that, it is so serious to develop alternative technologies that are safer for both human health and the environment to prevent any further damage to human health and the environment such as reducing release of dangerous chemicals to air leading to reduce damage to lungs. In addition, design safer chemical found to be a good opportunity to improve some chemical methods via producing cleaner and cheaper products in industrial processes when harmful chemicals are replacing with biological enzymes. For all the reasons outlined here, in this review, 12 principles of green chemistry are outlined with their applications, where shows how green chemistry reduces the impact of chemical processes on the environment and how their benefit can be achieved. And, also disadvantages of 12 principles are discussed, as well.