[{"command":"settings","settings":{"pluralDelimiter":"\u0003","suppressDeprecationErrors":true,"user":{"uid":0,"permissionsHash":"d9587e6f410d2e7f476e3da6cb10a457c78ab82347f962bf83d9020620f901dd"}},"merge":true},{"command":"add_css","data":[{"rel":"stylesheet","media":"all","href":"\/modules\/contrib\/addtocal\/addtocal.css?t2408i"},{"rel":"stylesheet","media":"all","href":"\/themes\/custom\/cest2025\/css\/components\/node.css?t2408i"}]},{"command":"add_js","selector":"body","data":[{"src":"\/core\/assets\/vendor\/jquery\/jquery.min.js?v=3.7.1"},{"src":"\/core\/assets\/vendor\/once\/once.min.js?v=1.0.1"},{"src":"\/core\/misc\/drupalSettingsLoader.js?v=10.5.1"},{"src":"\/core\/misc\/drupal.js?v=10.5.1"},{"src":"\/core\/misc\/drupal.init.js?v=10.5.1"},{"src":"\/modules\/contrib\/addtocal\/addtocal.js?v=10.5.1"},{"src":"\/modules\/contrib\/addtocal\/addtocal-download.js?v=10.5.1"}]},{"command":"openDialog","selector":"#drupal-modal","settings":null,"data":"\n\u003Carticle class=\u0022node node--type-presentation node--promoted node--view-mode-modal\u0022\u003E\n  \n      \u003Cb\u003E\u003Cspan\u003ECo-extraction of phosphorous and rare earth elements from sewage sludge ash using electrodialysis \u003C\/span\u003E\n\u003C\/b\u003E\n  \n      \u003Cdiv\u003E\u003Cb\u003ECEST ID: cest2025_00233\u003C\/b\u003E\u003C\/div\u003E\n  \n        \u003Cdiv class=\u0022mb-3\u0022\u003E\n      \u003Cb\u003ERoom  | Fri 5 Sep 2025 | 17:00 - 18:00 pm\u003C\/b\u003E\n    \u003C\/div\u003E\n  \n          \n    \n  \n      \u003Cdiv class=\u0022mt-10\u0022\u003E\n            \u003Cdiv class=\u0022clearfix text-formatted field field--name-presentation-body field--type-text-long field--label-hidden field__item\u0022\u003EPhosphorous (P) and rare earth elements (REEs) are on the EU list of critical raw materials. Sewage sludge ash typically contains 10% P per weight and should be regarded as a secondary P source. An electrodialytic method is under development for the extraction and recycling of P. In this method, the ash is suspended in water, and an electric field is applied to a set of electrodes placed in two compartments separated by a cation exchange membrane. The anode is placed in the compartment with the ash suspension, and due to electrolysis at the anode, the suspension gradually acidifies resulting in the extraction of P. The heavy metals are extracted as well, but they are removed simultaneously from the suspension into the cathode compartment in the applied electric field. Previously it has been shown possible to extract more than 90% P and obtain a product with very low heavy metal concentration. In the current research, the behavior of REEs during the electrodialytic extraction from sewage sludge ash is in focus. The REE content in the investigated sewage sludge ash was, in total, about 125 mg\/kg SSA. It was found that the REEs were co-extracted with P in the electrodialytic experiments. The lowest extraction percentages were around 60% (for Sc, La, and Eu), and the highest extractions of about 75% were obtained for Dy, Ho, Er, Tm, Yb, and Lu, i.e., the heavy REEs were extracted to the highest level. Since the REEs are in ionic form in a solution after EDR, separation for recovery is the next step to be investigated.\u003C\/div\u003E\n      \u003C\/div\u003E\n  \n  \u003Cdiv class=\u0022mt-5 mb-5\u0022\u003E\n          \u003Cspan\u003E\n          \u003Cb\u003EPresenter:\u003C\/b\u003E\n                      \u003Cp\u003E\n            Prof Lisbeth Ottosen\n            \u003C\/p\u003E\n                  \u003C\/span\u003E\n      \u003C\/div\u003E\n\n  \u003Cdiv class=\u0022mb-5\u0022\u003E\n          \u003Cdiv class=\u0022field__label\u0022\u003E\n        Authors\n      \u003C\/div\u003E\n              \u003Cp\u003E\n          Lisbeth Ottosen\n        \u003C\/p\u003E\n              \u003Cp\u003E\n          Ana Lima\n        \u003C\/p\u003E\n              \u003Cp\u003E\n          Huilin Li\n        \u003C\/p\u003E\n            \u003C\/div\u003E\n\n\u003C\/article\u003E\n","dialogOptions":{"width":"700","position":{"my":"right top","at":"right top"},"closeOnEscape":true,"dialogClass":"presentation-dialog","modal":true,"title":"","classes":{"ui-dialog":"presentation-dialog"}}}]