The anode of a two-chamber methane-producing microbial electrolysis cell (MEC) was poised at +0.200 V vs. the standard hydrogen electrode (SHE) and continuously fed (1.08 gCOD/L d) with acetate in anaerobic mineral medium. A gas mixture (carbon dioxide 30 vol.% in N-2) was continuously added to the cathode for both pH control and carbonate supply. At the anode, 94% of the influent acetate was removed, mostly through anaerobic oxidation (91% coulombic efficiency); the resulting electric current was mainly recovered as methane (79% cathode capture efficiency). Low biomass growth was observed at the anode and ammonium was transferred through the cationic membrane and concentrated at the cathode. These findings suggest that the MEC can be used for the treatment of low-strength wastewater, with good energy efficiency and low sludge production. (C) 2012 Elsevier Ltd. All rights reserved.

Carbon and nitrogen removal and enhanced methane production in a microbial electrolysis cell / Villano, Marianna; Stefano, Scardala; Federico, Aulenta; Majone, Mauro. - In: BIORESOURCE TECHNOLOGY. - ISSN 0960-8524. - STAMPA. - 130:(2013), pp. 366-371. [10.1016/j.biortech.2012.11.080]

Carbon and nitrogen removal and enhanced methane production in a microbial electrolysis cell

VILLANO, MARIANNA;MAJONE, Mauro
2013

Abstract

The anode of a two-chamber methane-producing microbial electrolysis cell (MEC) was poised at +0.200 V vs. the standard hydrogen electrode (SHE) and continuously fed (1.08 gCOD/L d) with acetate in anaerobic mineral medium. A gas mixture (carbon dioxide 30 vol.% in N-2) was continuously added to the cathode for both pH control and carbonate supply. At the anode, 94% of the influent acetate was removed, mostly through anaerobic oxidation (91% coulombic efficiency); the resulting electric current was mainly recovered as methane (79% cathode capture efficiency). Low biomass growth was observed at the anode and ammonium was transferred through the cationic membrane and concentrated at the cathode. These findings suggest that the MEC can be used for the treatment of low-strength wastewater, with good energy efficiency and low sludge production. (C) 2012 Elsevier Ltd. All rights reserved.
2013
microbial electrolysis cell; biocathode; ammonium recovery; anaerobic digestion; methane bioproduction
01 Pubblicazione su rivista::01a Articolo in rivista
Carbon and nitrogen removal and enhanced methane production in a microbial electrolysis cell / Villano, Marianna; Stefano, Scardala; Federico, Aulenta; Majone, Mauro. - In: BIORESOURCE TECHNOLOGY. - ISSN 0960-8524. - STAMPA. - 130:(2013), pp. 366-371. [10.1016/j.biortech.2012.11.080]
File allegati a questo prodotto
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/507341
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? 7
  • Scopus 130
  • ???jsp.display-item.citation.isi??? 117
social impact