Essay on electronic waste management
Step: 4 - Metals Extraction The pulverized PCB powder will then be sold to the professional authorised smelters who have the adequate knowledge and facilities to extract metals like lead, copper, gold, silver, palladium, platinum etc.
Air emissions of brominated dioxins, heavy metals, and PAHs Plastics from printers, keyboards, monitors, etc. In the proposed approach, the industrial acceptable standards of pulverization will be used to ensure the standardization of the powder with respect to their particle size distribution, homogenization, sampling procedure and sample collection.
E waste management
Programmes: Awareness Program on Environmental Hazards of Electronic Waste: by Ministry of Electronics and Information Technology which aims at providing training, tools, and films that seeks to create awareness and minimising the impact of e-waste on the environment and health. The reduction in profitability of the recycling business forces many recyclers to shift the businesses in the emerging countries like China, India and Brazil. Where do they go? This cat-sized E-waste which contains lead, cadmium, beryllium, or brominated flame retardants is a serious …show more content… 2. An indicative price of scrape metals, plastics and other recovered items based on prevailing rate in Indian market are shown in Table 5. The matters are not helped further by the fact that public at large remains unaware of their own toxic footprints and as part of its life-style replaces functional electronic gadgets with the latest model with impunity. How E-wastes are being managed in India? Our old electronics are being sent to developing countries to extract the valuable materials from them, but it is being done in a way that is damaging the environment and people who work, play, and live there. Copper, gold, palladium, silver and tin are valuable metals sold to smelters for recycling.
These never-to-be-used again products are called E-waste. Our old electronics are being sent to developing countries to extract the valuable materials from them, but it is being done in a way that is damaging the environment and people who work, play, and live there.
E waste definition
Some of the emissions are caught by scrubbers and screens. COP9 of the Basel convention adopted the Nairobi declaration which seeks to create innovative solutions for the environmentally sound management of e-waste. Therefore, the purpose of this paper is to explore the disposal methods of medical, electronic, and hazardous waste. It is known to be carcinogenic. Cathode ray tubes used in TVs, computer monitors, ATM, video cameras, and more Breaking and removal of yoke, then dumping Lead, barium and other heavy metals leaching into the ground water and release of toxic phosphor Printed circuit board image behind table — a thin plate on which chips and other electronic components are placed De-soldering and removal of computer chips; open burning and acid baths to remove metals after chips are removed. When not properly recycled it can leach into the soil, harming microorganisms and disrupting the soil ecosystem. That is very dangerous because it might kill all the trees that groundwater feeds and it could get into our drinking water of us. E-waste was included only in COP8. Robinson claims, now worldwide production of e-waste reaches approximately million tons being discarded every year with the largest proportion in Europe, the United States and Australasia. The populated PCB containing connectors, chips etc. Although AAS can analyze a number of elements in the range of ppm or ppb concentration, it is more time and cost intensive.
The research by Quayle revealed that small and medium enterprises SMEs in the UK would generally focus on waste management rather than adopting e-commerce. Consumer electronics manufacturers and retailers sponsor or operate more than 5, recycling locations nationwide and have vowed to recycle one billion pounds annually by a sharp increase from million pounds industry recycled in These identified components will preferably need segregation at early stage and process separately for better recovery yield.
The PCBs populated with whole range of passive, active, electro mechanical and inductive components in both leaded and surface mount configuration will be shredded in a mechanical shearing machine down to a size of about 3mm x 3mm.
The electrostatic separation will be used for separating plastic and metals and various embedded plastic and metal clusters are separated by gravity separation methods.
A study by government agency had predicted that electronic waste, comprising of personal computers, mobile phones, and televisions would reach 8,00, MT by . The concentrated e-waste will be created by manual removing of items such as glass components, metal fittings, screws, connectors etc.
The recovery of all the metals requires professional skill, expensive equipments and machineries.
Sources of e waste
The boards are heated to extract the thin layer of copper foils in the PCBs. China was the top e-waste generator in the world, producing 7. The gold rich components are removed by loosening of the lead solder by surface heating, which causes air pollution. Iron wires are added to the solution and the sludge contained copper settles in the bottom. The extraction of the precious metal will be carried out by the well-established techniques, which are discussed in details at various articles[1, , ]. This can be contributed to the misconceptions about what can be recycled and thrown away as is it not clearly stated. The PCBs and connectors are most valuable parts as it contains gold, silver copper and other precious metals. The advancement of material research is also replacing conventional usages of gold, silver, copper and other precious metals tantalum, palladium, platinum etc. Creation of Management Structure for Hazardous Substances: This programme aims at creating awareness among people regarding the rules and its implementation. It costs a lot because we are sacrificing our planet for using papers…. People take paper for granted that they have unlimited amounts of papers and it would always be around them. The electronics products are being continuously modified, improvised and miniaturized through technological developments and advancement of materials research.
Table 5. A known carcinogen after occupational inhalation exposure.
based on 82 review