From October to December 2013, Narcís Pous carried out a research stay at the laboratory of Dr. Federico Aulenta (IRSA-CNR (Monterotondo, Italy)).
As a result, the study entitled Anaerobic arsenite oxidation with an electrode serving as the sole electron acceptor: A novel approach to the bioremediation ofarsenic-polluted groundwater has been accepted for publication at the Journal of Hazardous Materials.
The work has been carried out by Narcis Pous, Barbara Casentini, Simona Rossetti, Stefano Fazi, Sebastià Puig and Federico Aulenta.
As a result, the study entitled Anaerobic arsenite oxidation with an electrode serving as the sole electron acceptor: A novel approach to the bioremediation ofarsenic-polluted groundwater has been accepted for publication at the Journal of Hazardous Materials.
The work has been carried out by Narcis Pous, Barbara Casentini, Simona Rossetti, Stefano Fazi, Sebastià Puig and Federico Aulenta.
This study demonstrate, for the first time, that anaerobic oxidation of arsenite can be carried out by bacteria able to use a polarized electrode as electron acceptor.
The abstract is:
"Arsenic contamination of soil and groundwater is a serious problem worldwide. Here we show that anaerobic oxidation of As(III) to As(V), a form which is more extensively and stably adsorbed onto metal-oxides, can be achieved by using a polarized (+497 mV vs. SHE) graphite anode serving as terminal electronacceptor in the microbial metabolism. The characterization of the microbial populations at the electrode,by using in situ detection methods, revealed the predominance of gammaproteobacteria. In principle,the proposed bioelectrochemical oxidation process would make it possible to provide As(III)-oxidizing microorganisms with a virtually unlimited, low-cost and low-maintenance electron acceptor as well aswith a physical support for microbial attachment."
It has been a pleasure for us to work with Dr. Aulenta, and we hope that this collaboration can be the first step for future works!
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