1.0 Introduction
Nowadays, there world is more aware about materials disposing and there are many concerns regarding the disposal of waste materials and its impact in the environment. So, the elimination process for the materials passes through the optimization of their use in the industrial processes. Existing deteriorated material can be reused; its characteristics can be rehabilitated, recycled and improved. The old material can be used in the same application that it was initially used for, or as part of a new material.
1.1 Recycling in general
Recycling is the process of transforming or reusing of waste materials to get new products to benefit the reduction of using fresh materials, reduce energy usage, reduce air pollution and water pollution since that most of the materials are not renewable. The trend nowadays is to reduce the consumption of energy and new materials. As a result of that the world create hierarchy to called 3R of waste which are reduce, reuse and recycle.
Recyclable materials include many kinds of glass, paper, metal, plastic, textiles, and electronics. Although similar in effect, the composting or other reuse of biodegradable waste such as food or garden waste is considered recycling.
1.2 Pavement recycling
In recent years the use of recycled materials in pavements has become an increasingly widespread practice. This is especially true for flexible pavements like (HMA) and rigid pavements like Portland cement concrete (PCC) materials that are
Recycling is a very essential and crucial process in our world today. The term recycling means that waste can be converted into new products instead of being discarded. As the population continues to grow, humans are using more and more products. In order to reduce the amount of waste on planet Earth, and to preserve its resources, recycling is significant. Not only does recycling allow the environment to thrive, but it also allows living people to thrive as well. There are many materials that can be recycled. Plastics, electronics, aluminum, food and glass are only but a few products that can be recycled. Recycling can benefit our environment in numerous amount of ways. However, without recycling, negative impacts on our environment can occur. Some of these effects include pollution whether it is air, land or sea, depletion of natural resources and even an increase threat to global warming. Therefore, recycling is extremely important to sustain our environment.
Recycling is the process in which materials, that are no longer needed, are remanufactured making new products in order to prevent wastage of useful material and also to reduce pollution, landfill, greenhouse gases and energy usage.
Recycling is when you convert waste into reusable material. This is like when you drink, or eat something out of a can. That can after you put it in the recycling bin, soon will be brought
bio-waste is wasted every day as well as the other categories. Bio-waste is waste material capable of breaking down under aerobic or anaerobic conditions. Due to the nature of this waste it is easier to break down and recycle. Bio-waste is usually recycled through composting or using the scraps to feed other organisms (Dusseldorf, 1998).
Recycling is an important way to help us achieve sustainable development.We can recycle many resources,including:
Recycling is the process of reusing, reutilizing, and turning waste into new reusable items. This procedure is saving space in the landfills and conserving the natural recourses of raw materials being utilized. There have been many different opinions as to whether recycling is worth all the work, time, and cost of processing recycled material. Recycling has come a long way and has many benefits such as cost savings for consumers/businesses, construction/building with recycled materials, and the positive effects it has on the environment.
The recycled aggregates can undergo some processing procedures and adaptation to the desired characteristics. Some of these processes are: homogenisation, crushing and screening and autogenous cleaning. The homogenisation process Material aims to standardise and remove waste materials such as wood, steel, plastics, among others. Initially, construction waste and demolition are separated by the predominant color: gray or red. It is then performed quartering, where the material is distributed in different layers along a plastic and from the middle section, they are divided into several sections entitled cells. The material is then sent to a crusher where grinding occurs (Kwan, Ramli, Kam and Sulieman, 2012).
But really know what is recyclable? Is a physical-chemical or mechanical process is to submit to a substance or a product already used to a cycle of total or partial treatment for a commodity or a new product. Could also be defined as the raw materials from waste, introducing them back into the cycle of
Aluminum recycling is the process by which scrap aluminum is reprocessed to be used in products after its initial production. Aluminum producers and recyclers in the aluminum industry work with individuals, businesses, and communities to enable both curbside and industrial recycling programs. For most aluminum products, the metal is not consumed during the products lifetime, but it is simply used making it easy to recycle without losing its intrinsic properties. Used beverage container (UBC) recycling is the most recognized of the aluminum recycling programs. However, end of life recycling of certain products like building parts and cars allows for the production of recycled materials like window frames, wire, tubing and electronic parts. The following is step by step process of aluminum recycling:
Recycling is important if we want to preserve our planet in the future. It is better for future generations, and is also good for the environment. By reusing products that have already been manufacturer, we can reduce waste and also reduce the use of new materials. When thinking about recycling, one should think about the idea of “reduce, reuse, and recycle”. After years of neglect in caring for our environment, necessary changes have to be made. This will also help to reduce air and water pollution. Recycling could also help to counter the effects of global warning. We not only have to help reduce waste, but we have to alter our way of thinking. If we do not need something, we should not get it. If we do need something, we should try to
Employees on the computer team and in the service and repair area can recycle all the old electronic equipment that the company is no longer using. Old wire and cable can be recycled in addition to computers, monitors and printers. Most printer cartridges that are recycled can be remanufactured to specs as good as the original and are sold for less. Recycling electronics helps to keep hazardous materials out of landfills and there are network drop-off facilities.
Recycling refers to a process where conversion of waste materials is done thus coming up with fresh products that inhibit waste of materials, which are potentially useful (Lynn & Eda, 15). “Consumers might also be more inclined to engage in green consumption if they know that they are making a difference.” It decreases the use of new raw materials, decrease usage of energy, decrease pollution of air coming from incineration, and pollution of water from landfilling by decreasing the need for conservative disposal of waste and reduce emissions of greenhouse gas as compared to the production of plastic. Recycling is one of the main ways encouraged to help curb environmental degradation while reducing waste. In the waste hierarchy, it is the third element of the Reduce, Reuse, and Recycle (Perritano, np). Recyclable materials involve many types of paper, glass, textiles, plastic, electronics, and metal. The composting or various biodegradable wastes like garden or food waste also regarded recycling. Materials that should be recycled can either be collected from the curbside or presented to a collection point and then categorized and recycled into fresh materials intended for manufacturing. The paper explores the benefits of recycling to environmental, energetic, and economic factors.
Serious environmental problems are happening at this time. These complications happen for one simple reason, people do not pay attention about the importance of caring the environment and saving natural resources for future generations. There is one activity that includes reusing materials or products to save energy and raw materials, looks like a good solution for all the environmental problems occurring in our planet. Since early ages, people had been learning about the word recycle. Many people know the meaning and the purpose of recycling. The real concern is that recycling is impractical for several
This literature review is focusing on the methods for recycling waste tyres particularly that of TDF (tyre derived fuels) as well as other methods utilised globally. Currently in Australia approximately 52.5 million waste tyres are produced annually with an estimated 13% being recycled through processes that involve separating the steel and rubber and using the resulting components for various other products or reusing the tyres for a number of construction projects as well as being utilised as a TDF.
Since the human being lived in this world, different kinds of waste were produced continuously. In the early years, the common wastes produced were biodegradable. There are no major problems with this since it will decompose over time. As the number of population increases and new inventions were made, the kind of waste produced by humans also increases. Some of these wastes include plastics, glass, metal, papers and many more. Some of waste scattered in the surroundings are recyclable. But due to improper waste management, these are not optimized.