Abstract
This study evaluated the influence of nanoparticles in both suspension and solid format on the performance of a microalgal process devoted to photosynthetic biogas purification. The experimental system consisted of an enclosed tubular photobioreactor coupled to a biogas absorption column through a mixing chamber. The high NH4+ concentration in the inlet mineral medium (530mg N-NH4+ L-1) and the punctual addition of 115mL of nanoparticle suspension to the system caused inhibition of the microalgal-bacterial cultivation. Conversely, cultivation broth aeration (0.5 L min-1 air flowrate) allowed the biomethane production fulfilling the EN 16723 (CH4>90%, CO2<2%). The nanoparticle suspension performance was superior to that of their solid counterparts in terms of CO2 removal efficiency at equivalent nanoparticle dose (77% vs. 49%). However, parameters such as the nanoparticle suspension dosage and biomass concentration in the photobioreactor should be optimized to further improve biomethane quality before its industrial application.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call