|About this Abstract
||Part C-1: Hydrometallurgy 2018
||Assessing Alternative Pre-treatment Methods to Promote Metal Recovery in the Leaching of Printed Circuit Boards (PCBs)
||Thandazile Moyo, Blessing Helen Chirume, Jochen Petersen, Dee Bradshaw
|On-Site Speaker (Planned)
PCBs are a metal rich fraction of e-waste streams. Reported successful cases of PCB recycling for metal recovery are carried out in large volumes in high technology and high capital investment smelter house operations. Hydrometallurgical processes can possibly provide an option for the scalable processing of smaller volumes of PCBs and can be set up at lower capital costs. However, to date, the hydrometallurgical treatment options available rely on precursor comminution processes that also have high capital and energy costs. This study evaluates the options of using chemical pre-treatment and other alternative pre-treatment methods to promote the leaching of metals which are otherwise inaccessible. Custom made PCBs of known metal content have been used to evaluate the effectiveness of each pre-treatment method. This has been assessed using a diagnostic base metal leach. Surface analysis tools have been used to assess where residual metal sits on the PCB post leaching.
||Planned: At-meeting proceedings