2016
DOI: 10.1016/j.seppur.2016.03.007
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A simple and nearly-closed cycle process for recycling copper with high purity from end life printed circuit boards

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Cited by 51 publications
(18 citation statements)
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“…First, the acid leaching method has often been used due to its high leaching rate. In particular, nitric acid (HNO 3 ) leaching solutions have been commonly used for the extraction of Cu, Pb, and Sn from WPCBs ( Kumari et al., 2016 ; Mecucci and Scott, 2002 ; Neto et al., 2016 ). Sulfuric acid (H 2 SO 4 ) has also been proved to be effective for the hydrometallurgy of WPCBs, when used with hydrogen peroxide (H 2 O 2 ) as an oxidant ( Silvas et al., 2015 ; Xiao et al., 2013 ; Yang et al., 2011 ).…”
Section: Hydrometallurgy For the Leaching And Recovery Of Metalsmentioning
confidence: 99%
“…First, the acid leaching method has often been used due to its high leaching rate. In particular, nitric acid (HNO 3 ) leaching solutions have been commonly used for the extraction of Cu, Pb, and Sn from WPCBs ( Kumari et al., 2016 ; Mecucci and Scott, 2002 ; Neto et al., 2016 ). Sulfuric acid (H 2 SO 4 ) has also been proved to be effective for the hydrometallurgy of WPCBs, when used with hydrogen peroxide (H 2 O 2 ) as an oxidant ( Silvas et al., 2015 ; Xiao et al., 2013 ; Yang et al., 2011 ).…”
Section: Hydrometallurgy For the Leaching And Recovery Of Metalsmentioning
confidence: 99%
“…Sulfuric acid desorption involves the need to pass large volumes of H 2 SO 4 solution for the most complete desorption. In [6], to achieve 99 % of the degree of copper desorption, the consumption of 4M sulfuric acid was 30 ml per 1 g of resin.The possibility of ammonia desorption of copper was shown in [7] and [8]. In [7], the desorption of copper from Dowex XFS 4195 was carried out with 2 % ammonium hydroxide, while more than 90 % of copper was desorbed while passing 15 column volumes of ammonia solution.…”
Section: Introductionmentioning
confidence: 99%
“…Além disso, a obsolescência programada se tornou uma estratégia da indústria para diminuir o ciclo de vida dos produtos o que 2/10 Tecnol Metal Mater Min. 2020;17(4):e2009 tem provocado um rápido crescimento na taxa de geração de REEE [2][3][4][5]. As Placas de Circuito Impresso (PCI) de computadores são um exemplo de REEE e apresentam uma composição diversificada de materiais com potencial de reciclagem, tendo em vista que cerca de 28-30% representa o conteúdo metálico, sendo esse composto de 10-20% de cobre e 0,3-0,4% de metais nobres, tais como ouro, prata, platina, podendo esses apresentar concentrações até dez vezes maiores que em minérios de alto teor.…”
Section: Introductionunclassified
“…As pesquisas sobre métodos apropriados de recuperação de metais presentes nestes recursos são baseadas em princípios pirometalúrgicos, hidrometalúrgicos e biometalúrgicos, bem como suas combinações [5,9,10]. Enquanto os processos pirometaúrgicos compreendem a separação térmica dos materiais [11], o tratamento hidrometalúrgico promove a dissolução dos metais em meios ácidos, alcalinos ou salinos a partir do processo de lixiviação seguido por etapas de purificação e separação; uma alternativa interessante, principalmente devido à sua simplicidade, menor gasto energético e menor geração de gases tóxicos se comparado aos processos pirometalúrgicos [12].…”
Section: Introductionunclassified