{"id":15560,"date":"2026-04-21T12:52:49","date_gmt":"2026-04-21T12:52:49","guid":{"rendered":"https:\/\/lequia-udg.com\/2026\/04\/21\/from-ageing-analysis-to-second-life-a-sustainable-approach-to-osmosis-membrane-recycling\/"},"modified":"2026-04-21T13:26:26","modified_gmt":"2026-04-21T13:26:26","slug":"from-ageing-analysis-to-second-life-a-sustainable-approach-to-osmosis-membrane-recycling","status":"publish","type":"post","link":"https:\/\/lequia-udg.com\/ca\/2026\/04\/21\/from-ageing-analysis-to-second-life-a-sustainable-approach-to-osmosis-membrane-recycling\/","title":{"rendered":"From ageing analysis to second life: a sustainable approach to osmosis membrane recycling"},"content":{"rendered":"\t\t
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\r\n\t\t\t\r\n\t\t\t\tBianca Zappulla Sabio\r\n\t\t\t\r\n\t\t\t<\/h4>\r\n\t\t

\r\n\t\t\t\r\n\t\t\t\tFrom ageing analysis to second life: a sustainable approach to osmosis membrane recycling\r\n\t\t\t\r\n\t\t\t<\/h2>\r\n\t\t<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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En aquest estudi, limitacions que apareixen durant la vida operativa de les membranes com per exemple els efectes de l\u2019assecat, l\u2019\u00fas industrial i l\u2019exposici\u00f3 qu\u00edmica sobre membranes d\u2019OI es van avaluar sistem\u00e0ticament per entendre millor el seu impacte en el rendiment i determinar si aquests factors s\u00f3n limitant pel reciclatge de membranes. Un enfocament similar tamb\u00e9 es va dirigir a les membranes d’osmosi directa (OD), una tecnologia emergent amb una composici\u00f3 similar, amb una capa selectiva de poliamida (PA) recoberta en una capa de polisulfona (PSf). Els resultats van mostrar que l\u2019assecat redueix significativament la permeabilitat (65% les noves membranes, 55% la SW30-used i 85% la BW30-used). Tot i aix\u00f2, despr\u00e9s de la immersi\u00f3 en etanol, es va observar una recuperaci\u00f3 parcial, la qual cosa indica que el dany a la capa de PA podria ser parcialment reversible. En canvi, en el cas de la capa de PSf, l\u2019assecat va provocar danys irreversibles (90% p\u00e8rdua de la permeabilitat en les noves membranes, 35% en la SW30-used i 70% per la BW30-used)., com esquerdes a la superf\u00edcie, que van suposar la p\u00e8rdua total de les propietats funcionals. Tamb\u00e9 es va avaluar l\u2019impacte de l\u2019\u00fas industrial a les capes de PA i PSf. Els resultats van indicar una disminuci\u00f3 del rendiment, principalment per la compactaci\u00f3 dels porus en la capa de PSf i la degradaci\u00f3 parcial de la capa de PA, confirmant l\u2019impacte de l\u2019\u00fas prolongat en la integritat de les membranes. L\u2019estudi va analitzar a m\u00e9s l\u2019exposici\u00f3 qu\u00edmica, utilitzant un protocol en tres etapes amb clor lliure per degradar selectivament la capa de PA. Aquest proc\u00e9s va permetre obtenir membranes amb propietats similars a les de la nanofiltraci\u00f3 (NF) i ultrafiltraci\u00f3 (UF), confirmant la viabilitat de transformar membranes d\u2019OI al final de la seva vida \u00fatil (EoL) en membranes amb diferents propietats de separaci\u00f3. Paral\u00b7lelament, es va provar la resist\u00e8ncia de les membranes a condicions extremes de pH. Tot i que van mostrar bona resist\u00e8ncia en medis \u00e0cids (petites variacions en la permeabilitat), neutres i b\u00e0sics, l\u2019addici\u00f3 de 10 ppm de clor lliure va provocar la seva degradaci\u00f3, especialment en condicions neutres i b\u00e0siques.<\/p>\n<\/div>\n

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/i><\/span>\n\t\t\t\t\t\t\t\t<\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\tAdditional Info<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t
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Autora:<\/strong><\/td>\nBianca Zappulla Sabio<\/td>\n<\/tr>\n
Supervisors:<\/strong><\/td>\nGa\u00ebtan Blandin, H\u00e8ctor Moncl\u00fas and Ignasi Rodriguez-Roda<\/td>\n<\/tr>\n
Data de defensa:<\/strong><\/td>\n12-12-2025<\/td>\n<\/tr>\n
Enlla\u00e7:<\/strong><\/td>\nhttps:\/\/hdl.handle.net\/10803\/696827<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Autora: Bianca Zapulla Sabio<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"footnotes":""},"categories":[68],"tags":[],"class_list":["post-15560","post","type-post","status-publish","format-standard","hentry","category-doctoral-theses_ca"],"_links":{"self":[{"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/posts\/15560","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/comments?post=15560"}],"version-history":[{"count":4,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/posts\/15560\/revisions"}],"predecessor-version":[{"id":15590,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/posts\/15560\/revisions\/15590"}],"wp:attachment":[{"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/media?parent=15560"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/categories?post=15560"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/tags?post=15560"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}