Rematronic: project to recovery precious metals from electronic waste

The large and grown amount of electronic waste (e-waste) demand technological solutions to minimize the environmental impact. In this context, the recycling of e-waste, focused on the recovery of precious metals from printed circuit boards (PCBs), emerges as a sustainable solution to reduce environmental impact and creates employment and income through the recycling processes. In this direction, the Center for Information Renato Archer (CTI), supported by National Bank of Economic and Social Development (BNDES) and a Brazilian company called "Gerenciamento de Resíduos Industriais (GRI)", is developing a national technology to recovery precious metals from PCBs. This development is under a project named REMATRONIC. For a better adaptation to a Brazilian context as volume of e-waste and geographical characteristics, the project will avoid pyrometallurgy and adopt a hydrometallurgy and biohydrometallurgy as the main routes. This paper aims to present the REMATRONIC project and technologies to recovery precious metals from PCBs. It is expected this technology became a mechanism to add more value to the recycling chain in Brazil thus contributing to economic viability of e-waste reverse logistics.

[1]  F. Reith,et al.  Potential utilisation of micro-organisms in gold processing: a review , 2012 .

[2]  B. Conard,et al.  The role of hydrometallurgy in achieving sustainable development , 1992 .

[3]  Eric Forssberg,et al.  BioMinE : integrated project for the development of biotechnology for metal-bearing materials in Europe , 2006 .

[4]  Helmut Brandl,et al.  Chapter 8. Microbial Leaching of Metals , 2001 .

[5]  Jan D. Miller,et al.  Reaction kinetics of gold dissolution in acid thiourea solution using ferric sulfate as oxidant , 2007 .

[6]  Gavin Hilson,et al.  Alternatives to cyanide in the gold mining industry: what prospects for the future? , 2006 .

[7]  Lifeng Zhang,et al.  Metallurgical recovery of metals from electronic waste: a review. , 2008, Journal of hazardous materials.

[8]  S. Harrison,et al.  The use of pyrite as a source of lixiviant in the bioleaching of electronic waste , 2015 .

[9]  Zhi Dang,et al.  Bioleaching of metal concentrates of waste printed circuit boards by mixed culture of acidophilic bacteria. , 2011, Journal of hazardous materials.

[10]  B. D. Pandey,et al.  Bio-processing of solid wastes and secondary resources for metal extraction - A review. , 2012, Waste management.

[11]  S. Syed,et al.  Recovery of gold from secondary sources—A review , 2012 .

[12]  B. D. Pandey,et al.  Optimizing the thiosulfate leaching of gold from printed circuit boards of discarded mobile phone , 2014 .

[13]  J. C. Gentina,et al.  Application of bioleaching to copper mining in Chile , 2013 .

[14]  R. Woods,et al.  Determination of leaching rates of precious metals by electrochemical techniques , 1991 .

[15]  I. O. Ogunniyi,et al.  Chemical composition and liberation characterization of printed circuit board comminution fines for beneficiation investigations. , 2009, Waste management.

[16]  Tiago Barreto Rocha,et al.  Ambientronic: a Brazilian program to support the development of innovative projects in e-waste reverse logistics , 2013, MEDES.

[17]  J. Proost,et al.  Recovery of precious metals from electronic scrap by hydrometallurgical processing routes , 2005 .

[18]  Rolf Widmer,et al.  Key drivers of the e-waste recycling system: Assessing and modelling e-waste processing in the informal sector in Delhi , 2005 .

[19]  G. N. Srinivasan,et al.  The aqueous recovery of gold from electronic scrap , 2003 .

[20]  Denise Crocce Romano Espinosa,et al.  Recycling of WEEE: characterization of spent printed circuit boards from mobile phones and computers. , 2011, Waste management.

[21]  W. Marsden I and J , 2012 .

[22]  Jilt Sietsma,et al.  Characterisation of metals in the electronic waste of complex mixtures of end-of-life ICT products for development of cleaner recovery technology. , 2015, Waste management.

[23]  Abdul Khaliq,et al.  Metal Extraction Processes for Electronic Waste and Existing Industrial Routes: A Review and Australian Perspective , 2014 .

[24]  Mohammad Mehdi Salarirad,et al.  Process development for recovery of copper and precious metals from waste printed circuit boards with emphasize on palladium and gold leaching and precipitation. , 2013, Waste management.

[25]  D. Holmes,et al.  Metal resistance in acidophilic microorganisms and its significance for biotechnologies , 2014, Applied Microbiology and Biotechnology.

[27]  Eric Forssberg,et al.  Mechanical recycling of waste electric and electronic equipment: a review. , 2003, Journal of hazardous materials.

[28]  Paul R. Haddad,et al.  Leaching and recovery of gold using ammoniacal thiosulfate leach liquors (a review) , 2003 .

[29]  Jinki Jeong,et al.  Enrichment of the metallic components from waste printed circuit boards by a mechanical separation process using a stamp mill. , 2009, Waste management.

[30]  D. Fray,et al.  Recovery of high purity precious metals from printed circuit boards. , 2009, Journal of hazardous materials.

[31]  M. Riekkola-Vanhanen Talvivaara mining company – From a project to a mine , 2013 .

[32]  Sami Virolainen,et al.  Hydrometallurgical recovery of valuable metals from secondary raw materials , 2013 .

[33]  F. Renaud,et al.  A review of the environmental fate and effects of hazardous substances released from electrical and electronic equipments during recycling: Examples from China and India , 2010 .

[34]  Ping Li,et al.  Bioleaching of copper from waste printed circuit boards by bacterial consortium enriched from acid mine drainage. , 2010, Journal of hazardous materials.

[35]  Bernd Kopacek,et al.  An advanced study on the hydrometallurgical processing of waste computer printed circuit boards to extract their valuable content of metals. , 2014, Waste management.

[36]  Bernd Kopacek,et al.  Environmental impact assessment of hydrometallurgical processes for metal recovery from WEEE residues using a portable prototype plant. , 2013, Environmental science & technology.

[37]  S. M. Mousavi,et al.  Simultaneous recovery of Ni and Cu from computer-printed circuit boards using bioleaching: statistical evaluation and optimization. , 2014, Bioresource technology.

[38]  Holger Scharf,et al.  Elemental analysis of printed circuit boards considering the ROHS regulations. , 2011, Waste management.