2026-04-23T03:27:46Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/63832022-03-23T10:39:29Zcom_10259_6229com_10259_4534com_10259.4_106com_10259_2604com_10259_4244com_10259_5086col_10259_6230col_10259_4245

Martínez Díaz, Raquel 98de4ca0-fcac-445f-be78-3dff5312d01c 600 Ruiz Pérez, María Olga 503 600 García Rodríguez, Ana 214 600 Ramos Rodríguez, Cipriano 464 600 Diez Blanco, Victorino 151 600 2022-02-01T09:33:07Z 2022-02-01T09:33:07Z 2021-09 0927-7757 http://hdl.handle.net/10259/6383 10.1016/j.colsurfa.2021.126910 The results of the characterisation of anaerobic sludge-derived extracellular polymeric substances (EPS) under different extraction conditions and their effects on the fouling in submerged hollow fibre membranes are presented. A wide range of EPS extraction results was obtained depending on the extraction conditions. Proteins, polysaccharides, and humic substances represented 80–99% of the total organic matter extracted, with 54–60% identified as humic substances. Ultrasonication was more effective than vortex agitation, ensuring higher EPS extraction yields in a shorter contact time. The increase in temperature from 30 °C to 50 °C and the decrease in NaCl concentration favoured the EPS diffusion, but this positive temperature effect was negligible for an ultrasonic contact. Linear, quadratic, and combined effects of ultrasonication time and solvent salinity were statistically significant effects for ultrasonication-assisted EPS extraction. The highest extraction yield was achieved using ultrasonication at 30 ºC for at least 60 min with salt-free water as the solvent, and an EPS extract with 138.8 mg TOC/L was obtained. Batch ultrafiltration-backwash tests at different permeation rates allowed to determine the specific resistance to filtration of the EPS extracts, which increased from 103.8·1012 m/kg TOC to 169.4·1012 m/kg TOC in presence of 1.8 wt% of NaCl. Salinity also provided rigidity to the EPS gel layer, reducing the compressibility index from 0.23 to 0.03. TCUE 2018–2020 cofounded by European Regional Development Fund (ERDF) and Junta de Castilla y León, Spain. Ana García is grateful to the European Social Fund the Operative Program of Castile-Leon, the Regional Government of Castile-Leon, Spain, through the Ministry of Education, for her research contract (Orden EDU/310/2015). application/pdf eng Elsevier Colloids and Surfaces A: Physicochemical and Engineering Aspects. 2021, V. 625, 126910 https://doi.org/10.1016/j.colsurfa.2021.126910 Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Extraction Membrane fouling Salinity Extracellular polymeric substances Humic substances Ingeniería química Chemical engineering Effect of salinity and temperature on the extraction of extracellular polymeric substances from an anaerobic sludge and fouling in submerged hollow fibre membranes info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Colloids and Surfaces A: Physicochemical and Engineering Aspects 625 126910 THUMBNAIL Martinez-csapea_2021.pdf.jpg Martinez-csapea_2021.pdf.jpg IM Thumbnail image/jpeg 4789 https://riubu.ubu.es/bitstream/10259/6383/4/Martinez-csapea_2021.pdf.jpg bcf6af8079604c7f8dcb1f16f6c607ce MD5 4 LICENSE license.txt license.txt text/plain; charset=utf-8 998 https://riubu.ubu.es/bitstream/10259/6383/3/license.txt aa90105e1c90a1b4fe810649aa967b7d MD5 3 CC-LICENSE license_rdf license_rdf application/rdf+xml; charset=utf-8 805 https://riubu.ubu.es/bitstream/10259/6383/2/license_rdf 4460e5956bc1d1639be9ae6146a50347 MD5 2 ORIGINAL Martinez-csapea_2021.pdf Martinez-csapea_2021.pdf application/pdf 2344972 https://riubu.ubu.es/bitstream/10259/6383/1/Martinez-csapea_2021.pdf 0401880f5c3db07e0e5a91359b1fe0fd MD5 1 10259/6383 oai:riubu.ubu.es:10259/6383 2022-03-23 11:39:29.016 Repositorio Institucional de la Universidad de Burgos bubrep@ubu.es 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