dc.creator | Leon Fernandez, Luis Fernando | |
dc.creator | Medina Díaz, Hassay Lizeth | |
dc.creator | Gonzalez Perez, Omar | |
dc.creator | Rodríguez Romero, Luis | |
dc.creator | Villaseñor, José | |
dc.creator | Fernández Morales, Francisco Jesús | |
dc.date.accessioned | 2022-08-08T17:48:15Z | |
dc.date.accessioned | 2022-10-15T06:40:49Z | |
dc.date.available | 2022-08-08T17:48:15Z | |
dc.date.available | 2022-10-15T06:40:49Z | |
dc.date.created | 2022-08-08T17:48:15Z | |
dc.date.issued | 2021-02 | |
dc.identifier | Leon Fernandez, Luis Fernando; Medina Díaz, Hassay Lizeth; Gonzalez Perez, Omar; Rodríguez Romero, Luis; Villaseñor, José; et al.; Acid mine drainage treatment and sequential metal recovery by means of bioelectrochemical technology; John Wiley & Sons Ltd; Journal of Chemical Technology and Biotechnology; 96; 6; 2-2021; 1543-1552 | |
dc.identifier | 0268-2575 | |
dc.identifier | http://hdl.handle.net/11336/164596 | |
dc.identifier | CONICET Digital | |
dc.identifier | CONICET | |
dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/4356393 | |
dc.description.abstract | BACKGROUND: This work studied the treatment of and metal recovery from a synthetic acid mine drainage (AMD) containing 500 mg L−1 copper (Cu2+) and iron (Fe+3), and 50 mg L−1 nickel (Ni2+) and tin (Sn2+) by using a bioelectrochemical system (BES). The presence of electroactive bacteria improved the performance of such reactor configuration, by contrast with systems with abiotic anodes. RESULTS: Operating as a microbial fuel cell (MFC), all of the Fe3+ was reduced to Fe2+ in about 24 h and Cu2+ was electrodeposited onto the cathodic surface, a Cu electrode, obtaining pure Cu0. Almost all of the Cu in the catholyte was recovered after four days. The maximum current density and power attained in this stage were 0.136 mA cm−2 and 0.0134 mW cm−2, respectively. Subsequent operation as a microbial electrolysis cell (MEC) allowed simultaneous recovery of the Fe2+, Ni2+ and Sn2+ by fixing the cathode potential at −0.7 V versus Ag/AgCl. The electrode material in this stage was titanium. The tin was completely deposited onto the cathodic surface after one day of electrolysis. After three days, 77% and 60% of Ni and Fe, respectively, was recovered. CONCLUSION: It was possible to recover Cu0 while generating electricity at the same time using a BES. The cell voltage required for the metal electrodeposition of Fe2+, Ni2+ and Sn2+ was low in the case of the BES because of the contribution of the electroactive bacteria. Sequential metal deposition is possible by adjusting the operating parameters of the BES reactors. | |
dc.language | eng | |
dc.publisher | John Wiley & Sons Ltd | |
dc.relation | info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/10.1002/jctb.6669 | |
dc.relation | info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/jctb.6669 | |
dc.rights | https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ | |
dc.rights | info:eu-repo/semantics/restrictedAccess | |
dc.subject | ACID MINE DRAINAGE | |
dc.subject | BIOELECTROCHEMICAL SYSTEM | |
dc.subject | METAL RECOVERY | |
dc.subject | MICROBIAL ELECTROLYSIS CELL | |
dc.subject | MICROBIAL ELECTROMETALLURGY | |
dc.subject | MICROBIAL FUEL CELL | |
dc.title | Acid mine drainage treatment and sequential metal recovery by means of bioelectrochemical technology | |
dc.type | info:eu-repo/semantics/article | |
dc.type | info:ar-repo/semantics/artículo | |
dc.type | info:eu-repo/semantics/publishedVersion | |