Efficiency of leaching of used PCBs using different acids

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F19%3A10244352" target="_blank" >RIV/61989100:27360/19:10244352 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.5593/sgem2019/4.1/S18.088" target="_blank" >http://dx.doi.org/10.5593/sgem2019/4.1/S18.088</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5593/sgem2019/4.1/S18.088" target="_blank" >10.5593/sgem2019/4.1/S18.088</a>

Result language

angličtina

Original language name

Efficiency of leaching of used PCBs using different acids

Original language description

Today, waste of electrical and electronic equipment is a big problem because it contains heavy metals such as copper, cadmium or nickel that cause neurological diseases. In addition, such waste also contains precious metals such as gold and silver, which makes this material really attractive for recovery. One of the fastest-generated groups of electrical and electronic waste is mobile phones. In 2008, the global sale of smartphones reached the level of 140 million units, while in 2015 it is rapidly growing to the level of 1500 million units. The lifespan of phones is also shortened to 8-12 months, which means that in the near future the number of mobile phones will continue to grow. The generated amount of electronic waste, including mobile phones, supports the search for an effective way of processing this waste. The dominant materials in used mobile phones are printed circuit boards (PCBs), which consist of a non-conductive substrate or laminate, conductive copper substrate printed on a laminate or inside a laminate and components attached to the substrate (chips-Ga, In, Ti, Si, Ge, As, Sb, Se and Te), connectors (Au, Ag) and capacitors (Ta, Al). Economically, the most important metals that can be recovered are copper, gold and silver. There are many methods to recover such metals based on pyrometallurgical and hydrometallurgical processes. Hydrometallurgical methods used to recover metals from electronic waste have many advantages over other methods. The paper presents an overview of hydrometallurgical studies of metal recovery from PCBs using various acids. Furthermore, the results of the leaching of printed circuit boards of used cell phones with H2SO4, HCl and HNO3 are presented. Research focused on the recovery of metals such as copper, iron, zinc, tin, aluminum and nickel. (C) 2019, International Multidisciplinary Scientific Geoconference. All rights received.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20500 - Materials engineering

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM. Volume 19, Issue 4.1

ISBN

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ISSN

1314-2704

e-ISSN

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Number of pages

8

Pages from-to

695-702

Publisher name

STEF92 Technology Ltd.

Place of publication

Sofia

Event location

Albena

Event date

Jun 30, 2019

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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