RT info:eu-repo/semantics/article
T1 Anaerobic digestion of food waste coupled with biogas upgrading in an outdoors algal-bacterial photobioreactor at pilot scale
A1 Marín de Jesús, David Fernando
A1 Méndez Rodríguez, Lara
A1 Suero Martín, Irene
A1 Blanco, Saúl
A1 Fernández-Polanco Íñiguez de la Torre, María
A1 Muñoz Torre, Raúl
K1 Photobioreactors
K1 Fotobioreactores
K1 Anaerobic digestion
K1 Digestión anaeróbica
K1 Biomethane
K1 Biometano
AB This work aimed at integrating the anaerobic digestion of food waste (FW) with photosynthetic biogas upgrading at pilot scale in order to obtain a high quality biomethane and a nutrient-laden algal biomass as the main byproducts from FW treatment. The performance of a 100 L anaerobic digester treating food waste integrated via raw biogas and digestate injection with a 1.2 m2 outdoors high-rate algal pond (HRAP) was evaluated. Biogas production in the digester averaged 790 ± 89 mL g VSin-1 (68 ± 8 L d-1) (35 °C, 1 bar) at a loading rate of 0.86 g VS L-1 d-1 and a steady state chemical oxygen demand removal efficiency of 83 ± 7%. The biogas produced (60% CH4 / 39% CO2) was upgraded in a 2.5 L absorption column interconnected with the HRAP via culture broth recirculation at a liquid to biogas ratio of 2, resulting in a maximum CO2 removal efficiency of 90% and a maximum CH4 content of 93.9%. The HRAP, supplied with the centrifuged liquid digestate supplemented with synthetic wastewater (5.0 ± 1.1 L d-1, Total nitrogen (TN) = 793 ± 110 mg N L-1, P-PO43- = 39 ± 19 mg P L-1), supported TN and total phosphorus maximum removal efficiencies of 100% in both cases. Pseudoanabaena sp. and Chlorella vulgaris were identified as the dominant species.
PB Elsevier
SN 0016-2361
YR 2022
FD 2022
LK https://uvadoc.uva.es/handle/10324/53589
UL https://uvadoc.uva.es/handle/10324/53589
LA eng
NO Fuel, 2022, vol. 324, Part A, 2022, 124554
NO Producción Científica
DS UVaDOC
RD 23-abr-2024