| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
O-40: Enhanced Chalcopyrite Bioleaching by Combined Catalysis of Activated Carbon and Visible Light |
| Author(s) |
Mo Lin, Shitong Liu, Hao Lin, Baojun Yang, Jun Wang, Guanzhou Qiu |
| On-Site Speaker (Planned) |
Mo Lin |
| Abstract Scope |
The effects of activated carbon and visible light on chalcopyrite bioleaching by Acidithiobacillus ferrooxidans (A. ferrooxidans) were investigated in this study. The results indicated that the dissolved copper in the visible light group without activated carbon and the dark group with activated carbon was higher than that of the control without visible light and activated carbon, respectively.In this study,bioleaching experiments,synchrotron X-ray Diffraction(SR-XRD),X-ray absorption near edge structure (XANES) and X-ray Photoelectron Spectroscopy (XPS) were conducted to investigate the specific mechanism about catalysis of activated carbon and visible light.Results revealed that catalytic effect was mainly attributed to the promotion of ferric iron/ferrous iron cycling and the inhibition of passivation layer formation on chalcopyrite surface. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |