Archivio Istituzionale della RicercaThis paper deals withexperimental tests on dark fermentation(DF)carried out withdifferent powered Fe°concentrations. The anaerobic corrosion(AC)of Fe° and the production of H2through fermentation, were tested separately, whiletests with Fe°supplement on DFat 1 g/L and 2 g/L of Fe°were conducted to ascertain synergic effects. Results of the Röels approach ofrelaxation times (τR)suggested that Fe°ACand DF areconcurrent phenomena. Apositive synergiceffectwas experimentally verified: H2productionincreasedof44% thanthe control test and of 35% compared with summation effect of ACand DF. In addition,Fe° supplementprovokes decreases of CO2yield of 56% in the case of2 g/L of Fe°addition.This is in agreement with literature references,whichadvance the enzymatic activity enhancement due to the action of S-Fe clustersofPyruvate:ferredoxin oxidoreductase (PFOR) enzymeto shift electronstowards hydrogenases.
Enhanced Biohydrogen Production and CO2 Sink by Powered Fe° Addition in Dark Fermentation / GOMEZ CAMACHO, CARLOS ENRIQUE; I. Romano, Francesco; Ruggeri, Bernardo. - ELETTRONICO. - (2017). (Intervento presentato al convegno 10th International Conference on Sustainable Energy and Environmental Protection tenutosi a Bled nel 27-30 June, 2017) [10.18690/978-961-286-061-5.20].
Enhanced Biohydrogen Production and CO2 Sink by Powered Fe° Addition in Dark Fermentation
GOMEZ CAMACHO, CARLOS ENRIQUE;Ruggeri, Bernardo
2017
Abstract
This paper deals withexperimental tests on dark fermentation(DF)carried out withdifferent powered Fe°concentrations. The anaerobic corrosion(AC)of Fe° and the production of H2through fermentation, were tested separately, whiletests with Fe°supplement on DFat 1 g/L and 2 g/L of Fe°were conducted to ascertain synergic effects. Results of the Röels approach ofrelaxation times (τR)suggested that Fe°ACand DF areconcurrent phenomena. Apositive synergiceffectwas experimentally verified: H2productionincreasedof44% thanthe control test and of 35% compared with summation effect of ACand DF. In addition,Fe° supplementprovokes decreases of CO2yield of 56% in the case of2 g/L of Fe°addition.This is in agreement with literature references,whichadvance the enzymatic activity enhancement due to the action of S-Fe clustersofPyruvate:ferredoxin oxidoreductase (PFOR) enzymeto shift electronstowards hydrogenases.
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https://hdl.handle.net/11583/2701567
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