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Evaluation of the effect of physical and chemical factors in the recovery of Cu, Pb and Fe from waste PCB through acid leaching.
Gómez Duran, Jaime A; Arroyo, Zeferino Gamiño; Gómez Castro, Fernando Israel; Owen, Patricia Quintana; Sánchez Cadena, Lorena Eugenia; Ayala Gómez, Mónica V.
Afiliación
  • Gómez Duran JA; Departamento de Ingeniería Química, División de Ciencias Naturales y Exactas, Campus Guanajuato, Universidad de Guanajuato, Noria Alta S/N, Guanajuato, Gto., 36050, Mexico.
  • Arroyo ZG; Departamento de Ingeniería Química, División de Ciencias Naturales y Exactas, Campus Guanajuato, Universidad de Guanajuato, Noria Alta S/N, Guanajuato, Gto., 36050, Mexico.
  • Gómez Castro FI; Departamento de Ingeniería Química, División de Ciencias Naturales y Exactas, Campus Guanajuato, Universidad de Guanajuato, Noria Alta S/N, Guanajuato, Gto., 36050, Mexico.
  • Owen PQ; Departamento de Física Aplicada, CINVESTAV-IPN, A.P. 73, Cordemex, 97310, Mérida, Yucatán, Mexico.
  • Sánchez Cadena LE; Departamento de Ingeniería Civil, Campus Guanajuato, Universidad de Guanajuato, Calle Juárez 77, Col. Centro, Guanajuato, Gto, C.P, 36000 , Mexico.
  • Ayala Gómez MV; Departamento de Química, División de Ciencias Naturales y Exactas, Campus Guanajuato, Universidad de Guanajuato, Noria Alta S/N, Guanajuato, Gto, 36050, Mexico.
Heliyon ; 9(11): e21348, 2023 Nov.
Article en En | MEDLINE | ID: mdl-38027605
Electronic waste recycling is a strategy that contributes to implement a circular economy model which include reuse, component and raw material recovery and minimum final deposition. Given the importance of reincorporating the components of electronic devices into the productive chain and a correct recovery for some hazardous metals such as lead contained in such residues. This study is focused on the effect of maximum available content (MAC) of metal, sulfuric acid initial concentration, agitation velocity, and oxidising agent on the recovery of copper, lead and iron from electronic waste through acid leaching. A solid-state characterization before and after treatment and electrochemical analysis was carried out to analyse MCA effects and surface chemistry. It was found that sub-millimetric particles show a better available extraction percentage in case of copper and iron, being opposite for lead. Presence of hydrogen peroxide enhance the extraction efficiency, however, this cause iron and lead precipitation, therefore it is inefficient for metals recovery as well as for reagent consumption. The presence of calcium salts reacts producing gypsum, which reduces the extraction yield of copper at particle size below 250 µm.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Heliyon Año: 2023 Tipo del documento: Article País de afiliación: México Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Heliyon Año: 2023 Tipo del documento: Article País de afiliación: México Pais de publicación: Reino Unido