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May 04, 2020· Photo: Johner Royalty-Free/Getty Images. T he world produces 50 million tons of e-waste each year — equivalent to 4,500 Eiffel Towers or 125,000 jumbo jets — from old computers, discarded screens, broken smartphones, and damaged tablets. E-waste is the fastest growing waste stream in the world, but it also holds metals crucial to tech that could soon become short in supply.
rise to the generation of a new stream of waste known as E-waste which is rising three times higher than the other forms of municipal wast(die et˜ al. 2014)ally, about 50 million tons of e-waste are produced every year (iu et˜al. 2016)aste electrical and electronic equip-men(WEE)so called electronic waste or e-waste,
Mar 13, 2016· In India, e-waste scenario has undergone a drastic change. After China imposed a ban on the import of e-waste in 2002, India has emerged as one of the largest dumping grounds for the developed countries of the world [49- 51]. ... Pradhan JK, Kumar S. Metals bioleaching from electronic waste by Chromobacterium violaceum and Pseudomonas sp. Waste ...
E-waste of developed countries, such as the US, dispose their wastes to India and other Asian countries. A recent investigation revealed that much of the electronics turned over for recycling in the United States ends up in Asia, where they are either disposed of or recycled with little or no regard for environmental or worker health and safety.
Jul 14, 2020· Pradhan JK, Kumar S (2012) Metals bioleaching from electronic waste by Chromobacterium violaceum and Pseudomonads sp. Waste Manag Res 30(11):1151–1159 PubMed Google Scholar 29. Ilyas S, Chi RA, Lee JC (2013) Fungal bioleaching of metals from mine tailing.
bioleaching of e-waste: strategies for enhanced gold recovery gayathri natarajan (b.tech, anna university, india) a thesis submitted for the degree of doctor of philosophy department of chemical and biomolecular engineering national university of singapore 2014
Jul 05, 2018· The explosion of e-waste highlights its dual (and dueling) identities as both environmental scourge and potential economic resource. Though often laced with lead, mercury or …
May 26, 2018· Asian countries like India and China are the major countries, which get the e-Waste from all over the world for recycling purpose as the developing countries have less legislation rules for disposal. 9 There are several definitions for e-Waste, but the simplest definition for e-Waste is "any broken or unwanted electronic and electrical ...
Chennai, India 2Department of Biotechnology, Vel TechHigh ... niveus were used for the bioleaching of metals from waste printed circuit boards. Bio- ... mous amount of electrical and electronic waste materials and it turns out to be a serious environmental issue [1, 2]. The increased
Jan 13, 2020· E-waste is an emerging problem that has to be attending worldwide. The best way for E-waste management is recycling. Bioleaching is a novel method to extract metals from E-waste. In this research, bioleaching of Cu and Ni from an E-waste sample …
Electronic waste is emerging as a serious public health and environmental issue in India. India is the "fifth largest electronic waste producer in the world"; approximately 2 million tons of e-waste are generated annually and an undisclosed amount of e-waste is …
Mar 27, 2012· These days, electronic waste needs to be taken into consideration due to its materials content, but due to the heterogeneity of the metals present, reprocessing of electronic waste is quite limited. The bioleaching of metals from electronic waste was investigated by using cyanogenic bacterial strains (Chromobacterium violaceum, Pseudomonas ...
In India, the estimated amount of e-waste generated in 2019 was 3.2 Mt as compared to the waste generated in 2016 i.e., 2.0 Mt. E-waste is mixture of metals and persistent organic pollutants (POP ...
Electronic Waste and India Dr. S. Chatterjee Scientist-E Department of Information Technology Electronics Niketan, 6, C.G.O. Complex New Delhi-110 003, India, [email protected] Abstract Electronic waste (e-waste) is one of the fastest growing waste streams in the country. Growth of Information and Communication Technology sector has
Jan 16, 2021· India generated 708,445-tonne e-waste in 2017-18 and 771,215 tonnes the following fiscal. In 2019-20, the figure rose 32 per cent to 1,014,961 tonne. The figures have taken into account the 21 types of electrical and electronic equipment listed in the E-Waste Management Rules, 2016. These include discarded computer monitors, mobile phones ...
The Solving the E-Waste Problem (StEP) Initiative's vision is to be agents and stewards of change, uniquely leading global thinking, know- ... 10 Bioleaching of polymetallic industrial waste using ... environmental health in informal recycling chain in India . . 41 2.3 Distribution and structure of …
The one step and two step bioleaching experiments were carried out for testing efficacy of biomass on metal leaching. Paenibacillus sp. showed its potential for the extraction of precious metals viz., gold, silver and copper from electronic waste. Paenibacillus sp. recovered gold (0.001%), cadmium (45%), copper (50%), iron (46%), manganese (88% ...
Sep 27, 2015· Mumbai, the financial nerve-center of India, alone throws away 19,000 to 20,000 tons of electronic waste a month, excluding the large e-waste it imports from developing nations through its port . There are only two formal recyclers one at Chennai and another in Bangalore for the whole of South India and one in western India.
e-waste management and source recuperation, they are known for their higher energy utilization and operational expense. Despite these, bioleaching offers a characteristic, natural, and cost-benefit organic methodology for e-waste management and recuperation of valuable metals present in it using a variety of bacterial and fungal species.
Aug 05, 2021· India's e-waste problem is complex. The nation's burgeoning, tech-savvy economy has created one of the world's biggest electronics markets – together with plenty of used and unwanted goods. Yet in a city like New Delhi there is no shortage of small workshops, recycling everything from cables to motherboards.
Feb 07, 2021· Among the various e-waste, generation of WPCBs is estimated to about 6% which in turn comes to 0.5 million tons annually [23, 46]. Importantly, WPCBs contain precious metals like Zn, Cu and Ni, which are of greater value. The scope of researches on bioleaching of valuable metals from WPCBs or other electronic waste is tremendous.
Increase in advanced electronic technology leads to environmental issues related with its disposal. Electronic waste i.e., video card and random access memory were used for studying extraction of precious metals using Paenibacillus sp. Metal contaminated soil was used for the isolation of exopolysaccharide producing strains. The isolate was identified as Paenibacillus sp. based on ...
Bioleaching is a novel method to extract metals from E-waste. In this research, bioleaching of Cu and Ni from an E-waste sample was examined using acidophil microorganisms. Different kinds of E-waste were purchased; the sample size reduced to lower than 100 microns. Acidithiobacillus ferrooxidans was adapted to the 15 g/l of the E-waste sample.
E (Electronic) Waste Management using Biological systems-overview ... e-waste generated in India reckoned to be about 1, 46,000 tonnes yearly (Sharma et al., 2012). Therefore, it has become paramount ... Table.1 Some microorganisms identified for bioleaching of toxic metals
A record 53.6 million metric tons (Mt) of electronic waste was generated worldwide in 2019, up 21% in just five years, according to the UN's Global E-waste Monitor 2020, released recently. The new report also predicts global e-waste - discarded products with a battery or plug - will reach 74 Mt by 2030, almost a doubling of e-waste in just 16 ...
Electronic waste is a secondary source of valuable and precious metals. In recent trends, urban mining of these metals has received significant attention due to its profitable prospects, extended business opportunity, source of livelihood and ultimately achieving agenda for …
Jan 19, 2021· The world generated a record 53.6 million tonnes of e-waste last year, the Global E-waste Monitor 2020 has said. India is the third biggest contributor to this dump with 3.2 million tonnes, after China and the US. While the environmental hazard is worsening, some companies are beginning to take e-waste
Martin, K.B. & Harris, C., 2014 • "Health and Environmental Hazards of Electronic Waste in India" Borthakur, Anwesha, 2016 • "Electronic Waste Management in India: A Stakeholder's Perspective" Borthakur, A. & Kunal, S., 2013 • "DENR Administrative Order 2013-22: Revised Procedures in the Management of Hazardous Wastes"