| Title | Biostimulation of jarosite and iron oxide-bearing mine waste enhances subsequent metal recovery |
|---|---|
| ID_Doc | 17109 |
| Authors | Roberts, M; Srivastava, P; Webster, G; Weightman, AJ; Sapsford, DJ |
| Title | Biostimulation of jarosite and iron oxide-bearing mine waste enhances subsequent metal recovery |
| Year | 2023 |
| Published | |
| Abstract | Novel resource recovery technologies are required for metals-bearing hazardous wastes in order to achieve circular economy outcomes and industrial symbiosis. Iron oxide and co-occurring hydroxysulphate-bearing wastes are globally abundant and often contain other elements of value. This work addresses the biostimulation of indigenous microbial communities within an iron oxide/ hydroxysulphate-bearing waste and its effect on the subsequent recoverability of metals by hydrochloric, sulphuric, citric acids, and EDTA. Laboratory-scale flowthrough column reactors were used to examine the effect of using glycerol (10% w/w) to stimulate the in situ microbial community in an iron oxide/ hydroxysulphate-bearing mine waste. The effects on the evolution of leachate chemistry, changes in microbiological community, and subsequent hydrometallurgical extractability of metals were studied. Results demonstrated increased leachability and selectivity of Pb, Cu, and Zn relative to iron |
| https://doi.org/10.1016/j.jhazmat.2022.130498 |
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