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http://hdl.handle.net/2445/135317
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DC Field | Value | Language |
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dc.contributor.author | Querol Carceller, Xavier | - |
dc.contributor.author | Dosta Parras, Joan | - |
dc.contributor.author | Valderrama, César | - |
dc.contributor.author | Licon Bernal, Edxon Eduardo | - |
dc.contributor.author | Moreno, Natalia | - |
dc.contributor.author | Hermassi, Mehrez | - |
dc.contributor.author | Batis, Narjes H. | - |
dc.contributor.author | Cortina Pallàs, José Luis | - |
dc.date.accessioned | 2019-06-18T12:26:23Z | - |
dc.date.available | 2020-07-15T05:10:29Z | - |
dc.date.issued | 2018-07-15 | - |
dc.identifier.issn | 0048-9697 | - |
dc.identifier.uri | http://hdl.handle.net/2445/135317 | - |
dc.description.abstract | The use of low-cost inorganic sorbents as a new sustainable strategy to enhance the valorization of nutrients (N-P-K), from the urban water cycle (e.g., side streams from sewage sludge anaerobic digestion), in agriculture applications is presented. The simultaneous recovery and stabilization of ammonium and phosphate by using a mixture of two reactive sorbents (Na and K zeolites and magnesium oxide) was evaluated. The nutrients stabilization process, favoured at alkaline pH values, is carried out by a) the precipitation of phosphate ions with magnesium and/or ammonium ions and b) the sorption of ammonium by Na- and K-zeolites. MgO(s) promoted the stabilization of phosphate as bobierrite (Mg3(PO4)2(s)) or struvite (MgNH4PO4(s)) depending on the applied dose. Doses with the stoichiometric molar ratio of Mg/P promote the formation of bobierrite, while molar ratios higher than 3 favour the formation of struvite. Na zeolites (NaP1-NA, NaP1-IQE) demonstrated efficiency on ammonium stabilization between 60±2 (for 15gZ/L) to 90±3% (for 50gZ/L). The ammonium recovery efficiency is limited by the zeolite sorption capacity. If the target of the fertilizing criteria should include K, then the use of a K-zeolite (e.g., 5AH-IQE) provides a good solution. The optimum pH for the precipitation of struvite and bobierrite is 9.5 and the optimum pH for ammonium removal is between 4 and 8.5. N is present in higher concentrations (up 0.7-1gNH4+/L) when pH is ranged between 8.2 and 8.6. The ammonium recovery ratios were better than those previously reported using only magnesium oxide or even a more expensive reagent as newberrite (MgHPO4(s)). The recovery mechanisms described generate low-solubility stabilized nutrients forms that potentially can be applied as slow-release fertilizers in agriculture. Thus, the use in agriculture of blends of digested sludge with low-solubility stabilized nutrients forms will improve soils quality properties in terms of organic matter and nutrients availability. | - |
dc.format.extent | 9 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Elsevier B.V. | - |
dc.relation.isformatof | Versió postprint del document publicat a: https://doi.org/10.1016/j.scitotenv.2018.02.243 | - |
dc.relation.ispartof | Science of the Total Environment, 2018, vol. 630, p. 781-789 | - |
dc.relation.uri | https://doi.org/10.1016/j.scitotenv.2018.02.243 | - |
dc.rights | cc-by-nc-nd (c) Elsevier B.V., 2018 | - |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es | - |
dc.source | Articles publicats en revistes (Enginyeria Química i Química Analítica) | - |
dc.subject.classification | Zeolites | - |
dc.subject.classification | Nutrients (Medi ambient) | - |
dc.subject.classification | Digestió anaeròbia | - |
dc.subject.classification | Llots de depuradora | - |
dc.subject.other | Zeolites | - |
dc.subject.other | Nutrients (Ecology) | - |
dc.subject.other | Anaerobic digestion | - |
dc.subject.other | Sewage sludge | - |
dc.title | Simultaneous ammonium and phosphate recovery and stabilization from urban sewage sludge anaerobic digestates using reactive sorbents | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/acceptedVersion | - |
dc.identifier.idgrec | 687303 | - |
dc.date.updated | 2019-06-18T12:26:23Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Enginyeria Química i Química Analítica) |
Files in This Item:
File | Description | Size | Format | |
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687303.pdf | 1.1 MB | Adobe PDF | View/Open |
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