dc.contributor |
Universitat Politècnica de Catalunya. Departament d'Enginyeria Química |
dc.contributor |
Valderrama Angel, César Alberto |
dc.contributor.author |
Artusi Ainchil, Martin Shai |
dc.date |
2016-01 |
dc.identifier.uri |
http://hdl.handle.net/2117/91032 |
dc.language.iso |
eng |
dc.publisher |
Universitat Politècnica de Catalunya |
dc.rights |
Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights |
info:eu-repo/semantics/openAccess |
dc.rights |
http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject |
Àrees temàtiques de la UPC::Desenvolupament humà i sostenible::Enginyeria ambiental::Tractament de l'aigua |
dc.subject |
Àrees temàtiques de la UPC::Enginyeria química::Química del medi ambient |
dc.subject |
Zeolites |
dc.subject |
Sewage -- Purification |
dc.subject |
Ultrafiltration |
dc.subject |
Zeolites |
dc.subject |
Aigües residuals -- Depuració |
dc.subject |
Ultrafiltració |
dc.title |
Nutrient recovery from wastewater by adsorption on Magnesium/Potassium zeolites in adsorption-ultrafiltration hybrid systems |
dc.type |
info:eu-repo/semantics/bachelorThesis |
dc.description.abstract |
A zeolitic material synthesized from coal fly ash (Na-Ze) was modified to magnesium (Mg-Ze) and magnesium-potassium (Mg/K-Ze) forms for being used as a sorbent material to enhance simultaneous removal of ammonium and phosphate from wastewater effluents. Loaded zeolites can be used afterwards as slow-release fertilizers or in soil quality improving actions.
A series of batch experiments were carried out in order to determine the sorption capacity and kinetic performance of zeolites. Once these results were obtained a new set of experiments were performed with the objective of setting up a hybrid ultrafiltration-adsorption pilot plant using zeolite as a sorbent material in a more realistic conditions of wastewater treatment plant.
Equilibrium, kinetic, and zeolite dose studies were carried out through batch experiments in NH4+/PO43- binary systems. All equilibrium experimental data were fitted by Langmuir isotherm model, and maximum sorption capacities of ammonium and phosphate were determined for both zeolites. qm of Mg-Ze was reported to be 30.90 mg·g-1 and 12.41 mg·g-1 for ammonium and phosphate, respectively, while results for Mg/K-Ze were 27.79 mg·g-1 and 57.87 mg·g-1. Kinetics was overall reported to be very swift, reaching the equilibrium of ammonium sorption in less than 2 minutes. For the phosphate, sorption was slower and long-termed. The optimum zeolite dose for nutrient removal was determined to be 2 g/dm3.
Finally, after a successful experiment at the UF-adsorption pilot plant, global mass removal efficiency of ammonium and phosphate from a simulated wastewater sample was reported to be 60% and 90%, respectively. |