118701 20240319080947.0 doi 10.1016/j.chemosphere.2022.135587 sideral 129355 ART-2022-129355 eng Ugarte, Patricia Low-cost ceramic membrane bioreactor: Effect of backwashing, relaxation and aeration on fouling. Protozoa and bacteria removal 2022 Access copy available to the general public Unrestricted Membrane biological reactors (MBR) constitute an alternative to conventional wastewater treatments for improved recovery, reuse, and recycling of water. MBRs have a smaller footprint, provide better biotreatment and achieve a high-quality effluent. This work analyses the use of MBRs innovative low-cost ceramic membranes for wastewater treatment. We propose low-cost ceramic membranes as an alternative to the more expensive commercial ceramic membranes. Low-cost membranes were made of clay, calcium carbonate, potato starch, almond shell and chamotte. We synthesized two different selective layers, from clay and/or TiO2. We characterized the membranes (pore diameter and water permeance) and their performance in a laboratory scale MBR. To mitigate membrane fouling and preserve the continued operation along time, the effect of different operating cycles was measured, considering two physical cleaning strategies: relaxation and backwashing. Cycles of 9 min of operation, 30 s of relaxation and 1 min of backwashing provided the lowest fouling rate. We investigated the effect of air scouring on fouling by operating with different air flow rates. Once experimental conditions were optimized, the overall performance of the different ceramic membranes was tested. The membrane with a TiO2 thin layer provided the best resistance to fouling, as well as a good retention capacity of E. coli, Cryptosporidium oocysts and Giardia cysts. info:eu-repo/grantAgreement/ES/MINECO/RTC2015-3485-5 info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 8.8 2022 ENVIRONMENTAL SCIENCES 30 / 275 = 0.109 2022 Q1 T1 1.727 2022 Chemistry (miscellaneous) 2022 Q1 Environmental Chemistry 2022 Q1 Environmental Engineering 2022 Q1 Public Health, Environmental and Occupational Health 2022 Q1 Medicine (miscellaneous) 2022 Q1 Pollution 2022 Q1 Health, Toxicology and Mutagenesis 2022 Q1 13.3 2022 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Ramo, Ana (orcid)0000-0002-0308-1390 Quílez, Joaquín Universidad de Zaragoza (orcid)0000-0001-7831-2483 Bordes, María del Carmen Mestre, Sergio Sánchez, Enrique Peña, José Ángel Universidad de Zaragoza (orcid)0000-0002-8383-4996 Menéndez, Miguel Universidad de Zaragoza (orcid)0000-0002-2494-102X 1009 773 Universidad de Zaragoza Dpto. Patología Animal Área Sanidad Animal 5005 555 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Ingeniería Química 306 (2022), 135587 [7 pp.] Chemosphere CHEMOSPHERE 0045-6535 681659 http://zaguan.unizar.es/record/118701/files/texto_completo.pdf Versión publicada 1801622 http://zaguan.unizar.es/record/118701/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:118701 articulos driver 2024-03-18-12:39:57 ARTICLE