Copper recovery from waste printed circuit boards and the correlation of Cu, Pb, Zn by ionic liquid

• Autorzy: Li F. , Chen M.

Identyfikatory

DOI

10.5277/epe170405

• Języki publikacji: EN

Abstrakty

EN

Waste printed circuit boards (WPCBs) contain not only harmful materials but also many valuable resources, especially metals, which attracts more and more attention from the public. In this study, a sulfonic acid functionalized ionic liquid ([BSO₃HPy]OTf) was used to recycle copper from WPCBs. Zinc and lead, represented as typical heavy metals, were chosen to study the leaching behavior and their relation to copper. Five factors such as particle size, ionic liquid (IL) concentration, H₂O<sub<2</sub> dose, solid to IL ratio and temperature were investigated in detail. The results showed that copper leaching rate was high, up to 99.77%, and zinc leaching rate reached the highest value of 74.88% under the optimum conditions. Lead cannot be leached effectively and the leaching rate was mostly low than 10%, which indirectly indicated that [BSO₃HPy]OTf has a good selectivity to lead. Besides, the interaction of copper, lead and zinc was characterized macroscopically by means of statistical methods. The Spearman correlation analysis showed that copper and zinc had a highly positive correlation. Lead had little relation to copper, which to some extent indicated that the effect of zinc on copper leaching behavior was bigger than that of lead.

Słowa kluczowe

EN

electronic waste; printed circuit boards; heavy metals; waste disposal

PL

metale ciężkie; odpady elektroniczne; odpad płytek drukowanych; miedź

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Environment Protection Engineering
• Rocznik: 2017
• Tom: Vol. 43, nr 4
• Strony: 55--66
• Opis fizyczny: Bibliogr. 25 poz., tab., rys.

Twórcy

autor

Li F.

• Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, Southwest University of Science and Technology, 59 Qinglong Road, Mianyang, 621010, China

autor

Chen M.

• Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, Southwest University of Science and Technology, 59 Qinglong Road, Mianyang, 621010, China

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).