On Energy Sustainability of Dark Anaerobic Fermentation of Biohydrogen

摘要

The only bio-H_2 production leads to a negative net energy balance, hence in this paperrnexperimental tests in order to increase the energy recovery embedded in the substraternhave been carried out. In order to try different strategies to recovery as much as possiblernthe energy, we have realized several proofs of the concept tests on the followingrndifferent approaches: i) Production of biogas on liquid metabolites; ii) Production of H_2rnfrom sodium acetate by Microbial Electrolysis Cell (MEC) with cation exchangernmembrane (CEM). Both technologies demonstrate to be feasible and with the doublernpositive effect: the energy recovery increment and the greater lowering of the organicrnwastewater load.