• circuit boards pcbs Topics by Science.gov

    May 15 2018  Theoretic model and computer simulation of separating mixture metal particles from waste printed circuit board by electrostatic separator. PubMed. Li Jia Xu Zhenming Zhou Yaohe. 2008 05 30. Traditionally the mixture metals from waste printed circuit board PCB were sent to the smelt factory to refine pure copper. Some valuable metals

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    Jan 14 2015  Although e waste called junk e waste in the vast majority of components can be recycled. Such as the dismantling of old electrical appliances 200 000 units all kinds of metal can be recycled 4100 tons 1300 tons of plastic glass 640 tons processing one ton chip circuit board can be decomposed into a 130 kg copper tin 20 kg 0.4 kg of gold.

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    Nov 06 2019  Growth in the IT and communication sectors has enhanced the usage of the electronic equipment exponentially. Faster upgradation of electronic product is forcing consumers to discard old electronic products very quickly which in turn adds to e waste to the solid waste stream. The growing problem of e waste calls for greater emphasis on recycling

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    Feb 22 2019  A worker sorts through stripped computer boards in Guiyu China in 2008. Source Fortune Some of the materials in one component of e waste printed circuit boards PCBs are particularly

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    Recycling of Printed Circuit Boards

    on recycling waste PCBs. 2. PCB composition PCBs are platforms on which integrated circuits and other electronic devices and connections are installed. Typically PCBs contain 40 of metals 30 of organics and 30 ceramics. Bare PCB platforms represent about 23 of the weight of whole PCBs Duan et al. 2011 .

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    Effective electronic waste management and recycling

    countries as e waste contains hazardous materials. Recycling of e waste through proper technologies is however considered to be a profitable business in developed countries due to the presence of precious metals including gold silver etc. in printed circuit boards PCBs . The present recycling cost

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    ELECTRONIC WASTE WORLD WIDE. E waste is considered the fastest growing waste stream in the world with 44.7 million tonnes generated in 2016 equivalent to 4500 Eiffel towers. In 2018 an estimated 50 million tonnes of e waste was reported thus the name ‘tsunami of e waste’ given by the UN. Its value is at least 62.5 billion annually.

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    Oct 10 2014  Abstract. E waste contains both hazardous and n on hazardous substances in their components. Globally the e waste generation is estimated at 20 t o 50 million tonnes annually. It. represents 1 to