2026-04-21T05:23:18Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/82782024-01-11T01:05:23Zcom_10259_4244com_10259_5086com_10259_2604com_10259_4402col_10259_4245col_10259_6209
Repositorio Institucional de la Universidad de Burgos
author
Martínez Díaz, Raquel
author
Ruiz Pérez, María Olga
author
Ramos Rodríguez, Cipriano
author
Cámara Nebreda, José María
author
Diez Blanco, Victorino
2024-01-10T08:54:45Z
2024-01-10T08:54:45Z
2020-07
1369-703X
http://hdl.handle.net/10259/8278
10.1016/j.bej.2020.107558
Anaerobic sludge filtration tests were performed with two experimental set-ups equipped with either submerged hollow-fiber membranes or external tubular membranes operated with low crossflow velocity and gas sparging in a gas-lift mode. Particle size distributions, extracellular polymeric substance concentrations, methanogenic activity, reversible and irreversible fouling rates, and chemical cleaning efficiency were all studied and compared. An increase in the percentage of smaller particles and a decrease in the concentration of volatile suspended solids in the external membrane set-up were observed. Both soluble protein and soluble polysaccharide concentrations were also higher in the external filtration. Operating at 12–15 L/m2 h for 7 days, the total resistance of the external membrane reached 9.3 × 1012 m−1, while the resistance of submerged membrane reached 1.1 × 1012 m−1 despite operating at 15–25 L/m2 h for 12 days. Finally, the type of fouling and the efficiency of chemical cleaning also differed in both configurations.
eng
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Submerged filtration
External filtration
Anaerobic membrane bioreactor
Gas-lift mode
Shear stress
Fouling rate
Comparison of external and submerged membranes used in anaerobic membrane bioreactors: Fouling related issues and biological activity
info:eu-repo/semantics/article
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URL
https://riubu.ubu.es/bitstream/10259/8278/1/Martinez-bej_2020.pdf
File
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application/pdf
Martinez-bej_2020.pdf