Metal Recovery from Printed Circuit Board Waste by Chlorination-Volatilization and the Volatilization Behavior of Metals
نویسندگان
چکیده
منابع مشابه
Metals Content in Printed Circuit Board Waste
This paper an presents analysis of metals in waste of printed circuit boards (PCB) covering types of PCB, segregated from PC computers, mobile phones, and mixed. The presented data identifies metals and other substances found in PCB waste based on elemental and technical analysis of PCBs. PCB categorization based on gold concentration is presented, resulting in two groups: electric and electron...
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Molten fly ashes generated from melting treatment of municipal solid waste and automobile shredder residues are characterized as hazardous waste due to the high content of heavy metals such as Zn, Pb and Cu. In addition, the heavy metal resources could be depleted in the near future and thus, the research towards conservation of metal resources is required. In the present work, volatilization b...
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The recovery of precious metals from waste printed circuit boards (PCBs) is an effective recycling process. This paper presents a promising hydrometallurgical process to recover precious metals from waste PCBs. To simplify the metal leaching process, large pieces of PCBs were used instead of a pulverized sample. The chemical coating present on the PCBs was removed by sodium hydroxide (NaOH) tre...
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The process of etching is the most crucial part of the work of manufacturing printed circuit boards (PCB). In the etching process by nitric acid, a spent etching waste solution of composition 250 g/L HNO3, 30-40 g/L Cu, 30-40 g/L Sn, 30-40 g/L Pb and 20-25 g/L Fe is produced. High metal concentrations in the spent etching waste solution make it a viable candidate for the recovery of metals. Rec...
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Waste printed circuit boards (WPCB) have an inherent value because of the precious metal content. For an effective recycling of WPCB, it is essential to recover the precious metals. This paper reports a promising method to recover the precious metals. Aqua regia was used as a leachant and the ratio between metals and leachant was fixed at 1/20 (g/ml). Silver is relatively stable so the amount o...
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ژورنال
عنوان ژورنال: Journal of the Japan Institute of Metals
سال: 2012
ISSN: 1880-6880,0021-4876
DOI: 10.2320/jinstmet.76.155