Technology validation of photosynthetic biogas upgrading in a semi-industrial scale algal-bacterial photobioreactor
2019
Rodero Raya, María del Rosario | Lebrero Fernández, Raquel | Serrano, Esteban | Lara, Enrique | Arbib, Zouhayr | García Encina, Pedro Antonio | Muñoz Torre, Raúl
Producción Científica
显示更多 [+] 显示较少 [-]The performance of photosynthetic biogas upgrading coupled to wastewater treatment was evaluated in an outdoors high rate algal pond (HRAP) interconnected to an absorption column at semi-industrial scale. The influence of biogas flowrate (274, 370 and 459 L h−1), liquid to biogas ratio (L/G = 1.2, 2.1 and 3.5), type of wastewater (domestic versus centrate) and hydraulic retention time in the HRAP (HRT) on the quality of the biomethane produced was assessed. The highest CO2 and H2S removal efficiencies (REs) were recorded at the largest L/G due to the higher biogas-liquid mass transfer at increasing liquid flowrates. No significant influence of the biogas flowrate on process performance was observed, while the type of wastewater was identified as a key operational parameter. CO2 and H2S-REs of 99% and 100% at a L/Gmax = 3.5 were recorded using centrate. The maximum CH4 content in the biomethane (90%) was limited by N2 and O2 desorption.
显示更多 [+] 显示较少 [-]European Union’s Horizon 2020 research and innovation program. grant agreement no. 689242
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