RT info:eu-repo/semantics/article
T1 Innovative ammonia recovery and biogas enhancement via direct contact membrane distillation in thermophilic anaerobic digestion of mixed sludge
A1 Rivera Mejia, Fanny Maritza
A1 Villarreal, Luis
A1 Prádanos del Pico, Pedro Lourdes
A1 Hernández Giménez, Antonio
A1 Palacio Martínez, Laura
A1 Muñoz Torre, Raúl
K1 Biogas production
K1 Circular economy
K1 Distillation
K1 Flat sheet membrane module
K1 TAN recovery
K1 3308 Ingeniería y Tecnología del Medio Ambiente
AB The effect of membrane distillation (MD) on both NH₃ recovery and anaerobic digestion during the treatment ofurban wastewater mixed sludge was studied in a 3 L thermophilic continuous stirred tank reactor combined witha membrane-based module for extraction. A hydraulic retention time of 20 days was used to operate the ther-mophilic anaerobic digester at 55 ◦C, while the flat sheet PTFE membrane module was continuously operated at0.25 L min 1 of liquid recirculation rates. MD was able to progressively reduce the total ammoniacal nitrogen(TAN) concentration from 0.4 ± 0.2 to 0.1 ± 0.1 g TAN L 1 after 40 operating days. The CH4 yield increased by3-fold as a result of NH₃ extraction. Similarly, chemical oxygen demand and volatile solids removal efficienciesincreased by 1.8-fold and 1.4-fold, respectively. Interestingly, the reduction in TAN concentration led to acomplete assimilation of acetic and propionic acid.
PB Elsevier
SN 2214-7144
YR 2025
FD 2025
LK https://uvadoc.uva.es/handle/10324/78269
UL https://uvadoc.uva.es/handle/10324/78269
LA eng
NO Journal of Water Process Engineering, 2025, vol. 76, p. 108193
NO Producción Científica
DS UVaDOC
RD 15-nov-2025