Analytical and reclamation technologies for identification and recycling of precious materials from waste computer and mobile phones

Autor(es)

Andrade, Daniel Fernandes ^{[1, 2]} ; Castro, Jeyne Pricylla ^[2] ; Garcia, Jose Augusto ^{[2, 3]} ; Machado, Raquel Cardoso ^[2] ; Pereira-Filho, Edenir Rodrigues ^[2] ; Amarasiriwardena, Dulasiri ^[1]

Afiliação do(s) autor(es)

^[1] Hampshire Coll, Sch Nat Sci, Amherst, MA 01002 - USA

^[2] Univ Fed Sao Carlos, Dept Chem, Grp Appl Instrumental Anal, Rod Washington Luiz, Km 235, BR-13565905 Sao Carlos, SP - Brazil

^[3] SG Solucoes Cient, BR-13560660 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Chemosphere; v. 286, n. 2 JAN 2022.
• Citações Web of Science: 1

Resumo

Waste electrical and electronic equipment (WEEE) is one of the world's fastest-growing class of waste. WEEE contain a large amount of precious materials that have aroused the interest to develop new recycling technologies. Hence, effective recycling strategies are extremely necessary to promote the proper handling of these materials as well as for environmentally sound recovery of secondary raw resource. This paper reviews important existing methods and emerging technologies in WEEE management, with special emphasis in characterization, extraction and reclamation of precious materials from waste computer and mobile phones. Traditional pyrometallurgical and hydrometallurgical technologies still play a central role in the recovery of metals. More recently, emerging greener recycling technologies using microorganisms (i.e. biometallurgical), plasma arc fusion method and pretreatments (i.e. ultrasound and mechanochemical technologies) combined with other recycling methods (e.g. hydrometallurgical), and using less toxic solvents such as ionic liquids (ILs) and deep eutectic solvents (DESs) have also been attempted to recycle metals from computer and mobile phone scrap. The role of analytical method development, especially using spectroanalytical methods for chemical inspection and ewaste sorting process at industrial applications is also discussed. This confirmed that most direct sampling techniques such as laser-induced breakdown spectroscopy (LIBS) and X-ray fluorescence (XFR) have several advantages over traditional sorting methods including rapid analytical response, without use of chemical reagents or waste generation, and greater reclamation of precious and critical materials in the WEEE stream. (AU)

• Processo FAPESP: 16/17304-0 - Proposição de métodos para a análise direta de amostras de lixo eletrônico: determinação de elementos preciosos, estratégicos e tóxicos em circuitos eletrônicos e telas touch screen
• Beneficiário: Daniel Fernandes de Andrade
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 16/17221-8 - Avaliação da composição de discos rígidos de lixo eletrônico por meio de técnicas espectroanalíticas: determinação de elementos preciosos e terras raras
• Beneficiário: Jeyne Pricylla Castro Castilho
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 18/24569-6 - Caracterização direta de telefones celulares utilizando fusão de dados provenientes de três técnicas espectroanalíticas complementares
• Beneficiário: Daniel Fernandes de Andrade
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado
• Processo FAPESP: 19/24223-5 - Calibração empregando Laser-Induced Breakdown Spectroscopy (LIBS): alternativas, desafios, comparação das propostas existentes e proposição de um procedimento universal
• Beneficiário: Edenir Rodrigues Pereira Filho
• Modalidade de apoio: Auxílio à Pesquisa - Regular