Influence of Fe2O3 Nanoparticles on the Anaerobic Digestion of Macroalgae Sargassum spp.

The anaerobic digestion (AD) of biomass is a green technology with known environmental benefits for biogas generation. yield from existing substrates and the biodegradability biomasses can be improved by conventional or novel enhancement techniques, such as addition iron-based nanoparticles (NPs). In this study, effect different concentrations Fe2O3-based NPs on AD brown macroalga Sargassum spp. has been investigated 30 days trials. was evaluated at concentrations. control sample yielded value 80.25 ± 3.21 NmLCH4/gVS. When 5 mg/g substrate 10 Fe2O3 were added to sample, increased 24.07% 26.97%, respectively. Instead, when 50 negative observed, biomethane decreased 38.97%. Therefore, low favor process, whereas high have an inhibitory effect. Direct interspecies electron transfer (DIET) via their insolubility play important role in facilitating methanogenesis process during AD.