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Bioelectrochemical recovery of ammonia–copper(II) complexes from wastewater using a dual chamber microbial fuel cell
- Source :
-
Chemosphere . Nov2012, Vol. 89 Issue 10, p1177-1182. 6p. - Publication Year :
- 2012
-
Abstract
- Abstract: The cathodic reduction of complex-state copper(II) was investigated in a dual chamber microbial fuel cell (MFC). The inner resistance of MFC system could be reduced in the presence of ionizing , however, mass transfer was hindered at higher ammonia concentration. Thermodynamic and electrochemical analyses indicated that the processes of complex dissociation and copper reduction were governed by the ratio of T[Cu]:T[NH3] and the pH of solution. The reduction of could be achieved via two possible pathways: (1) releasing Cu2+ from , then reducing Cu2+ to Cu or Cu2O and (2) accepting an electron and forming , and depositing as Cu or Cu2O consequently. At initial concentration of 350mg T[Cu] L−1, copper removal efficiency of 96% was obtained at pH=9.0 within 12h (with △Cu/△COD=1.24), 84% was obtained at pH=3.0 within 8h (with △Cu/△COD=1.72). was reduced as polyhedral deposits on the cathode. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00456535
- Volume :
- 89
- Issue :
- 10
- Database :
- Academic Search Index
- Journal :
- Chemosphere
- Publication Type :
- Academic Journal
- Accession number :
- 80220061
- Full Text :
- https://doi.org/10.1016/j.chemosphere.2012.08.011