Volume 5, Issue 2, June 2019, Page: 30-40
Urban Mining: A Process Designed to Recover Au from E-waste
Fernanda Nicolle Pinheiro Nicolai, Thematic Network in Materials Engineering (REDEMAT), Ouro Preto State University, Ouro Preto City, Brazil
Sebastiana Luiza de Bragança Lana, Thematic Network in Materials Engineering (REDEMAT), Ouro Preto State University, Ouro Preto City, Brazil; Department of Post-Graduation in Design/School of Design of Minas Gerais State, Minas Gerais State University (UEMG), Belo Horizonte City, Brazil
Received: Mar. 27, 2019;       Accepted: May 9, 2019;       Published: Jul. 1, 2019
DOI: 10.11648/j.ijsdr.20190502.11      View  110      Downloads  20
Abstract
Electronic waste (e-waste) is today the fastest growing solid waste in the world, due to its unique characteristics like planned obsolescence, high technology and a fast growing consumer market. It can contain over 100 highly toxic and potentially hazardous substances to human health and to the environment. However, e-waste is a valuable secondary source of high quality finite raw minerals suitable for “urban mining” in which the materials contained should not be lost. The recovery materials from e-waste, also called Reverse Logistics (RL), which includes the insertion and application of sustainable Design, is an environmental and commercial measure of great importance that can only bring benefits to all involved. Unconventional pre-treatments techniques to separate gold-rich components and other parts of e-waste from motherboards, Printed Circuit Boards (PCBs) and cell phone plates has not been extensively explored in literature. The aim of this paper is to describe a set of thermo-mechanical and manual techniques in pilot scale to separate gold-rich parts from the others of the e-waste mentioned above. Another goal of this research is to obtain the total mass of gold deposited on the three samples of selected connector tabs from PCBs. Scanning Electron Microscopy (SEM) technique was performed and the results were analyzed. With this procedure, the total gold mass could be evaluated.
Keywords
E-waste, Urban Mining, Recycling Designing Process, Separation Techniques, Gold (Au) Recovery, SEM
To cite this article
Fernanda Nicolle Pinheiro Nicolai, Sebastiana Luiza de Bragança Lana, Urban Mining: A Process Designed to Recover Au from E-waste, International Journal of Sustainable Development Research. Vol. 5, No. 2, 2019, pp. 30-40. doi: 10.11648/j.ijsdr.20190502.11
Copyright
Copyright © 2019 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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