REGAIN
REcovery and co-GenerAtIoN of metals and energy by sustainable acid mine drainage treatment.
The project REGAIN aims to demonstrate an integrated system for biological remediation of acid mine drainage (AMD) along with recovery of valuable metals and electricity using a microbial fuel cell (MFC) and reverse electrodialysis (RED). MFC will be fed with a mixture of AMD and wood hydrolysate at anode side, wherein sulfate-reducing bacteria reduces sulfate to sulfide which is further oxidized to sulfur by sulfide oxidizing bacteria. Electrons from anode pass via external circuit, while protons pass through membranes towards cathode for oxygen reduction and electricity generation. To boost the electricity, RED unit will be incorporated in between the anode and cathode chamber of MFC. RED produce electricity by mixing AMD with alkali through alternately placed ion-exchange membranes. Stacking of multiple MFC-RED units in different configurations and optimization will be investigated. Scenarios for upscaling and integration with electricity grid/market will be analyzed in collaboration with LTU’s Electric Power Engineering group.
Contact
Ulrika Rova
- Professor
- 0920-491315
- ulrika.rova@ltu.se
- Ulrika Rova
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