E Waste Management Paper Presentation TextSource normalized impact per paper snip: 2.374 ℹ source normalized impact per paper snip: snip measures contextual citation impact by weighting citations based on the total number of citations in a subject field. Scimago journal rank sjr: 1.659 ℹ sjr is a prestige metric based on the idea that not all citations are the same. Sjr uses a similar algorithm as the google page rank it provides a quantitative and a qualitative measure of the journal’s impact. Impact factor: 3.220 ℹ impact factor: the impact factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. © thomson reuters journal citation reports 2015 5 year impact factor: 3.522 ℹ five year impact factor: to calculate the five year impact factor, citations are counted in 2014 to the previous five years and divided by the source items published in the previous five years. © journal citation reports 2015, published by thomson reuters best of b2b technology advertising by: michellepark views: 641 what is the difference between a startup. by: millforbusiness views: 1270 the epidemic of obesity by: epharmacies views: 573 how you can fit exercise into a crazy bu. by: rachelrofe views: 351 mindset vs. E wastes are considered dangerous, as certain components of some electronic products contain materials that are hazardous, depending on their condition and density. The hazardous content of these materials pose a threat to human health and environment. Discarded computers, televisions, vcrs, stereos, copiers, fax machines, electric lamps, cell phones, audio equipment and batteries if improperly disposed can leach lead and other substances into soil and groundwater. Many of these products can be reused, refurbished, or recycled in an environmentally sound manner so that they are less harmful to the ecosystem. This paper highlights the hazards of e wastes, the need for its appropriate management and options that can be implemented. Industrial revolution followed by the advances in information technology during the last century has radically changed people's lifestyle. Although this development has helped the human race, mismanagement has led to new problems of contamination and pollution. The technical prowess acquired during the last century has posed a new challenge in the management of wastes. For example, personal computers pcs contain certain components, which are highly toxic, such as chlorinated and brominated substances, toxic gases, toxic metals, biologically active materials, acids, plastics and plastic additives. The hazardous content of these materials pose an environmental and health threat. These days computer has become most common and widely used gadget in all kinds of activities ranging from schools, residences, offices to manufacturing industries. Basel action network ban estimates that the 500 million computers in the world contain 2.87 billion kgs of plastics, 716.7 million kgs of lead and 286,700 kgs of mercury. The average 14 inch monitor uses a tube that contains an estimated 2.5 to 4 kgs of lead. Effects on environment and human health disposal of e wastes is a particular problem faced in many regions across the globe. Essays on EarthquakesComputer wastes that are landfilled produces contaminated leachates which eventually pollute the groundwater. Acids and sludge obtained from melting computer chips, if disposed on the ground causes acidification of soil. For example, guiyu, hong kong a thriving area of illegal e waste recycling is facing acute water shortages due to the contamination of water resources. Now water is being transported from faraway towns to cater to the demands of the population. Incineration of e wastes can emit toxic fumes and gases, thereby polluting the surrounding air. Mercury will leach when certain electronic devices, such as circuit breakers are destroyed. When brominated flame retardant plastic or cadmium containing plastics are landfilled, both polybrominated dlphenyl ethers pbde and cadmium may leach into the soil and groundwater. It has been found that significant amounts of lead ion are dissolved from broken lead containing glass, such as the cone glass of cathode ray tubes, gets mixed with acid waters and are a common occurrence in landfills. Not only does the leaching of mercury poses specific problems, the vaporization of metallic mercury and dimethylene mercury, both part of waste electrical and electronic equipment we is also of concern. In addition, uncontrolled fires may arise at landfills and this could be a frequent occurrence in many countries.
© Copyright 2013 - 2016 - www.writehomestudio.com.
All rights reserved. |