Abstract
As the core component of computers, waste central processing unit slots contain recyclable precious metals as well as a small amount of toxic and hazardous substances. Bioleaching is considered as a green technology for recovering precious metals. However, the limited cyanogenic capacity and long leaching time limit its industrialization. To break this bottleneck, this paper presents an innovative bioleaching technique that increases the cyanide production to 2.38 times and reduces the leaching time to a few hours with 10 mA direct current. Meanwhile, part of Au+ was electrodeposited on the cathode, and Au recovery was achieved. Under the electric field, the improvement of biological activity, the enhancement of cyanogenic capacity, and the change of microbial community greatly contributed to the leaching of Au. This work presents a new approach to achieve efficient leaching in bioleaching, providing key scientific information for the recovery of precious metals from waste central processing unit slots.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
