Extração de elementos terras raras de resíduos de placa de circuito impresso: investigação do uso do ultrassom para recuperação de Ce, La e Y

Paola De Azevedo Mello; Agatha Gabrielly  Moreira Moura; Thaís Lavarda Gatiboni; Gabrielle Dineck Iop

Authors

Paola De Azevedo Mello Universidade Federal de Santa Maria
Agatha Gabrielly Moreira Moura Universidade Federal de Santa Maria
Thaís Lavarda Gatiboni Universidade Federal de Santa Maria
Gabrielle Dineck Iop Universidade Federal de Santa Maria

Keywords:

Ultrasound. Extraction. Rare earth elements. Waste of printed circuit boards.

Abstract

In this work, the feasibility of the use of ultrasound to improve the extraction process of rare earth elements from waste printed circuit boards (WPCBs) was investigated, aiming the recycling of these elements, that have high added value and are present in several technological products. The main parameters related to the extraction process were evaluated by a factorial design, using an ultrasound bath at 25 kHz. After selecting the suitable parameters, other ultrasound systems of several frequencies and power were evaluated as well as a conventional stirring system.

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