RT info:eu-repo/semantics/article
T1 Influence of design and operational parameters of a Taylor flow reactor on the bioconversion of methane to ectoines
A1 Herrero Lobo, Raquel
A1 Torres Franco, Andrés Felipe
A1 Llamas-Ramos, Wendy Mylene
A1 Monsalvo, Víctor
A1 Zamora Martínez, Patricia
A1 Rogalla, Frank
A1 Lebrero Fernández, Raquel
A1 Rodero Raya, María del Rosario
A1 Muñoz Torre, Raúl
K1 Ectoine
K1 High mass-transfer reactor
K1 Hydroxyectoine
K1 Methane bioconversion
K1 Methanotrophic consortium
AB Ectoine is one of the most attractive bioproducts due to its high market price and applications. Methanotrophic bacteria can synthesize ectoine from biogas. In this work, key design and operating parameters were optimised to maximise the bioconversion of methane to ectoine in a novel Taylor Flow bioreactor. This bioreactor configuration is characterized by higher gas-liquid mass transfer coefficients compared to conventional bubble column bioreactors. Thus, the influence of the internal gas recirculation flow rate (1.0 L·min−1, 2.5 L·min−1, 4.0 L·min−1, 5.5 L·min−1) at 60 and 120 min of gas residence time (GRT), the liquid recirculation flow rate (0 L·h−1, 141 L·h−1, 165 L·h−1, 395 L·h−1, 434 L·h−1) and the capillary length (1.50 and 0.75 m) was evaluated using a mixed methanotrophic consortium. Process operation at 120 min of GRT and 5.5 L·min−1 of gas recirculation flow rate enhanced methane bioconversion, resulting in a maximum efficiency of 83.8 ± 2.7 %. The decrease in capillary length from 1.5 to 0.75 m did not enhance methane bioconversion. Intracellular ectoine and hydroxyectoine reached maximum contents of 105.1 ± 8.6 mgEC·gTSS−1 and 33.4 ± 11.7 mgHE·gTSS−1, respectively. Nitratireductor was the dominant genus, while Methylomicrobium and Methylophaga were the main methanotrophic bacteria detected in the consortium. This study confirmed the feasibility of bioconverting novel renewable feedstocks such biogas into high-added value bio-products, boosting the circular and carbon neutral economy in bio-based industries.
PB Elsevier
SN 2213-3437
YR 2024
FD 2024
LK https://uvadoc.uva.es/handle/10324/83786
UL https://uvadoc.uva.es/handle/10324/83786
LA eng
NO Journal of Environmental Chemical Engineering, Diciembre 2024, vol. 12, n. 6, p. 114323
NO Producción Científica
DS UVaDOC
RD 27-mar-2026