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    Apr 30 2012 · The proportion of waste printed circuit boards (WPCBs) is about 3 of electronic waste . Unlike other solid waste WPCBs contain a variety of heavy metals and hazardous substances (i.e. lead cadmium mercury PVC halogenated flame retardants etc.)

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    Apr 30 2012 · The proportion of waste printed circuit boards (WPCBs) is about 3 of electronic waste . Unlike other solid waste WPCBs contain a variety of heavy metals and hazardous substances (i.e. lead cadmium mercury PVC halogenated flame retardants etc.)

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    The researchers found they could transfer 99.8 of the copper from the waste circuit boards to the water with this approach. A final recrystallization step yielded purified cupric sulfate

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    Sep 20 2019 · 1. Introduction. The output of electronic waste has reached 41.8 Mt per year. In Europe the per capita e-waste is approximately 20.4 kg/person/year compared with 22.3 kg/person and 4.4 kg/person in the United States and China respectively (Isildar et al. 2019).Printed circuit boards (PCBs) account for 4 of the electronic waste which are rich in gold silver copper and other metal

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    May 26 2015 · Printed circuit board recycling has become an important area within the PCB industry in the last few years. The reason for this is simpleprinted circuit board are considered as hazardous waste as they are manufactured with harsh chemicals and various materials that can harm the environment. Rather than adding to electronic waste manyRead More

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    May 26 2015 · Printed circuit board recycling has become an important area within the PCB industry in the last few years. The reason for this is simpleprinted circuit board are considered as hazardous waste as they are manufactured with harsh chemicals and various materials that can harm the environment. Rather than adding to electronic waste manyRead More