Green chemistry is a tool in achieving sustainability. It is define as the design of chemical processes and products that reduce or eliminate the use and generation of hazardous substances. Green and sustainable chemistry concern on development of processes and technologies that result in more efficient chemical reactions that generate little waste and fewer environmental emissions than traditional chemical reactions do. Green chemistry cover all aspects and types of chemical processes that reduce negative impacts to human health & environment by reducing and eliminating hazardous. It is all about to reduce waste, material, hazard, risk, energy and cost. It is a prevention approach because elimination of waste, toxic and hazardous materials associated with synthesis or process reducing risk to both human health and the environment. Moreover, green chemistry also works towards sustainability.
The concept of sustainability is the study of the functioning, diversity and production of natural systems in order to keep ecology in balance. It recognizes that human civilization is taking resources to sustain our contemporary way of life. Sustainability takes into account how we can live and protect ourselves from damage and destruction in harmony with the natural world around us. In order to balance the fine line between competitor requirements, sustainability and sustainable development is at the core of our needs to move technology and economically and the needs to protect our and others ‘ environments. Sustainability does not only concern the environment. The aim of this study is to assess the long-term effects of action humanity takes and to ask questions as to how these can be improved. It also concerns our health as a company, ensuring no persons or areas of life suffer as a result of the environmental legislation.
For a system to be sustainable, there is a need to balance in three pillars of sustainability which are environmental protection, economic and social development. For the economic worldwide human communities have access to the resources they need, financially and otherwise, in order to meet their need. their independence. Economic systems are intact and activities, such as secure livelihoods, are available to all. In social aspect, all people who have access to sufficient resources to maintain their families and their communities healthy and secure can achieve universal human rights and basic necessities. Healthy communities just have leaders who guarantee respect for personal, labor and cultural rights and who protect all against discrimination. This pillar is full of facets.
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The awareness and legislative protection of people’s health against pollution and other harmful activities by companies and other organizations is of major importance. It also aims to ensure access to fundamental resources without compromising the quality of life. Lastly, we all know what we need to do to protect the environment, including recycling, reducing our energy consumption by switching off electronic devices instead of using standby, taking the bus instead of taking the short journeys. Companies are regulated to avoid pollution and to keep emissions of their own carbon down. Incentives exist in our houses and companies for the installation of renewable energy sources. The third pillar and the main concern of many people is environmental protection. It defines how we should investigate and protect ecosystems, air quality, integrity and resource sustainability and concentrates on those elements which put environmental stress.
From what we are focusing, that is lead in automobile, ways to practice a green chemistry included in the general twelve principles of green chemistry. From the principles, there are a few principles that are related to toxicity include wherever practical, synthetic methodologies should be designed to use and generate substances that possess little or no toxicity to human health and the environment. There should be a green way to substitute lead in automobile paint because lead is a risk to health. It is stored in your bones and teeth and may cause liver, kidney and brain damage. Lead exposure can influence children, unborn babies and adults ‘ health. Single exposures can increase blood-lead levels for several weeks like eating a leaded paint flat of a size of 5 cent piece. Some of this lead will remain lifetime in the body. The lead enters the body when fine particles of plumage are swallowed into the dust or fumes or dust from aerosols is breathed into synthetic lacquers and enamels. Sanding and buffing pollution poses a significant risk. The soil or household dust can be settled and a health risk constantly risks. High-level plumbing should be used by commercial automotive repairers and spray painters according to the occupational safety and security regulations.
Moreover, substances and the form of a substance used in a chemical process should be chosen so as to minimize the potential for chemical accidents, including releases, explosions, and fires. This principle focuses on safety for employees and the environment in which an industry is based. It is best to use non-explosive materials and chemicals, fire lighting or air ignition when creating a product. Only a properly equipped spray shop with dust extraction, ventilation and waterwash spray cabinet should carry out automatic painting work. Make sure that the work area properly ventilated if using solvents. Next, the work area also have to contained in order to avoid dust spreading and contained in aerosolic paint to prevent overspray. Lastly, easily purified. This means that the floor coverings in workshops are not suitable for tapestry.
The sheets of plastic are better. Do not dry sand auto-paints containing lead, as it produces a lot of lead-containing dust. Wet sand is safer and subsequently properly clean sanded surfaces. When handling the paint, use a respirator that meets the standard for particulate or air purification. It should be equipped with a filter P1 (dust) or P2 (dust and fumes), that both can capture small lead particles. It should be worn when auto paints are removed or sprayed. It is possible to buy the respirators from major hardware stores and make sure to replace the filter regularly. Eye protection and protective clothing must wear all the time when handling the paint. Wash your workwear separately from the family and wash and wash the hair after the day’s work as soon as possible.
Lastly, chemical products should be designed to preserve efficacy of function while reducing toxicity is included in principle of green chemistry. Lead is added to accelerate drying, improve durability, maintain a refreshing look and withstand corrosion-causing moisture. It is one of the main dangers associated with paint in the health and environment. However, the use lead in automobile paint had been substitute with titanium dioxide. The vehicles ‘ painting has never been brighter, more varied or as durable, thanks to major manufacturers of automotive and aerospace paint and coatings, based on titanium dioxide.
As one of the brightest and whitest pigments known, titanium dioxide gives all types of vehicles unparalleled brightness and resilience, making their way into vehicles, trucks, buses, cruise ships, trains and airplanes. One of the many striking qualities of the titanium dioxide is its extremely high index of refractivity, which even beating diamond reflectivity. The titanium dioxide is manufactured to optimize the dispersal of visible light when used in paint with controlled main particle size. This dispersion of light on contact makes it possible to paint vehicles in all visible colours.
Bibliography
- Green Chemistry. (n.d.). Retrieved May 24, 2019, from Chemistry Explained: http://www.chemistryexplained.com/Ge-Hy/Green-Chemistry.html
- Lead in auto paints. (n.d.). Retrieved May 24, 2019, from Department of the Environment and Energy: http://www.environment.gov.au/protection/chemicals-management/lead/lead-in-auto-paints
- What is sustainability and why is it important? (n.d.). Retrieved May 24, 2019, from EnvironmentalScience.org: https://www.environmentalscience.org/sustainability
