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Biodegradable Technology In Electronic Waste Reduction And Recycling
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E Waste Recycling In Dubai: Companies, Methods & More
Center of Excellence for Advanced Materials Application, Slovak Academy of Sciences, Dubravska Cesta 9, 845 11 Bratislava, Slovakia
Laboratory of Power Electronics and Medium Voltage Applications (LEMT), Alberto Luiz Coimbra Institute of Graduate Studies and Research in Engineering (COPP), Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-594, Brazil.
Retrieved: April 14, 2022 / Rev.
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Waste materials originating from the recovery and recycling of electronic waste (e-waste) such as batteries and printed circuit boards have received a great deal of attention from academia and industry in recent years, mainly due to their eco-friendly and large-scale nature. increases in e-waste due to technological development. More research in the literature covers development. Meanwhile, photocatalytic applications are of particular interest because they continue to have mutual benefits and can be used for H .
Production from solar water splitting is based on the semiconductor process as an environmentally friendly technique for solar energy conversion. In addition, they can be degraded by various organic and inorganic contaminants. However, to the best of the authors’ knowledge, no comprehensive review has been conducted on e-waste-derived photocatalytic materials. In this regard, there is a current need for a full discussion of the relevant mechanisms, strategies and methods, as well as the various possible photocatalysts from some of the critical wastes of these fields. This brief overview will introduce modern technologies and promising possibilities for valorization from waste, photocatalytic processes, and new photocatalytic degradation methods in an eco-friendly environment. This paper discusses various waste-derived photocatalytic materials, their synthesis methods and applications, as well as some types of waste-derived materials such as TiO.
Electronic waste (e-waste) refers to all components of any electrical and electronic equipment (EEE) that are discarded without the intention of reuse. E waste covers a wide range of products – usually household or industrial items that contain environmental or electrical components that contain a power source or battery supply. In the 20th century, EEE began to be widely commercialized, and many household appliances were introduced, including refrigerators, televisions, and washing machines. Therefore, when technological advancements are combined with easy access, they have resulted in the significant growth of the electronics industry, making it an integral part of today’s modern life. This has become more important with the introduction of information and communication technologies (ICT) and the growing number of mobile phones, personal computers, laptops and all kinds of gadgets . This rapid expansion and increase in use has led to a new environmental problem called e-waste, which contains many harmful and toxic substances along with precious metals. This serious threat can be turned into an opportunity with the right management and implementation of new methods and reap significant financial and environmental benefits. Unfortunately, the world is suffering from a great lack of labor in the industry dedicated to the recycling of e-waste, especially in developing countries, and for this reason only a small part of the discarded e-waste is recycled. In this regard, most waste valorization techniques are focused on recovering precious metals, while various metals can be extracted from waste and some of them can be converted into photocatalysts, which can be used in many environmentally friendly applications; like water remediation, disposal of dyes and solar cells. Many metal oxides can be produced from waste and transformed into photocatalytic materials; however, the methods required for recycling are quite complex [2, 3]. This review presents an in-depth study of the production of various photocatalytic materials from waste with a focus on environmentally friendly methods.
Why Nigeria Needs To Manage Electronic Waste Better
Technological progress and the increased use of electronic devices due to the growth of electronic waste and improper and unsafe treatment and disposal through open burning or dumpsites represent many dangerous environmental and human health threats . This is a big and serious risk and should not be considered a small issue, because it is reported that global waste generation has increased to 44.7 million metric tons every year . Unfortunately, only 20% of the generated waste is collected and recycled, and the rest is burned or landfilled, which increases the risk of environmental pollution through toxic elements and other chemicals . Despite the small portion of the recovered waste in the total waste (2%), it contains a high amount of hazardous substances, reaching ~70% .
In addition to the serious environmental risks of waste and the environmental benefits of e-waste recycling, e-waste has great economic potential. The value of the total raw material in the waste (such as Fe, Cu, Al, Ag, Au, Pd and plastic content) is estimated to be about EUR 55 billion in 2016, which is greater than the value of the domestic gross. product (GDP) of most countries in the world in 2016 . In fact, up to 60 elements from the periodic table exist among different types of waste and many of them are technically recoverable. In addition to precious metals such as gold, silver, platinum, and palladium, it contains rare, rare, and rare metals. Popular hazardous species found in waste include various toxic chemicals (such as CFCs/chlorofluorocarbons or various flame retardants) and heavy metals (such as Hg, Pb, Cd); therefore, it is of the utmost importance that the wastes are systematically collected, treated and converted into valuable products. It is worth noting that the environmental aspect of waste as the world’s fastest growing waste stream is important since, according to the Global Recycling Foundation, it is slowly becoming one of the greatest threats to the Earth due to its toxicity and dangerousness [5, 7].
Evaluating the global situation of waste, the negative impact on the environment, and the great benefits of proper management and recovery, it is important to collect all the important things to study the subject of the material obtained in the waste. . . In this regard, the present study provides a comprehensive overview of the types of materials derived from waste in the category of photocatalysts as a solution to the ever-increasing problems arising from waste. This study aims to identify possible photocatalytic materials that can be recycled from waste, production methods, related factors, etc. with particular attention to techniques, criticisms, and their renewal. In addition, the type of e-waste used is taken into account, since it plays an important role in the recycling phase, since each type of e-waste can be a source of specific materials, as is mainly observed in lithium -ion and other types of batteries, with printed circuit boards and metal fragments from waste materials and can be used in the production of photocatalytic materials. Unfortunately, information on the global status of waste recycling and the scale of recovery initiatives is limited and only a few countries report detailed information, mainly the US and China. Therefore, another goal is to highlight the benefits and advantages of waste recovery from an environmental and economic perspective. This paper is also dedicated to presenting challenges and techniques, their consequences, faults, and related parameters. The biggest gaps in this matter are being told
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