Reagent-free phosphorus precipitation from a denitrified swine effluent in a batch electrochemical system
There is high interest in the recovery of phosphorus (P) from wastewater through crystallization processes. However, the addition of chemical reagents (e.g., sodium hydroxide) to raise the pH may result in high treatment costs and increased concentrations of undesired metal ions (e.g., sodium). As a...
| Autores: | , , , , , |
|---|---|
| Tipo de documento: | artigo |
| Estado: | Versão publicada |
| Data de publicação: | 2024 |
| País: | España |
| Recursos: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repositório: | Recercat. Dipósit de la Recerca de Catalunya |
| OAI Identifier: | oai:recercat.cat:10256/25292 |
| Acesso em linha: | http://hdl.handle.net/10256/25292 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Electroquímica Electrochemistry Aigua -- Electròlisi Water -- Electrolysis Aigües residuals -- Depuració Sewage -- Purification |
| id |
ES_da9ecdfeb9d1a0549fdd94e0632c82b7 |
|---|---|
| oai_identifier_str |
oai:recercat.cat:10256/25292 |
| network_acronym_str |
ES |
| network_name_str |
España |
| repository_id_str |
|
| spelling |
Reagent-free phosphorus precipitation from a denitrified swine effluent in a batch electrochemical systemDessì, EmmaCompany Masó, EmmaPous Rodríguez, NarcísMilia, StefanoColprim Galceran, JesúsMagrí Aloy, AlbertElectroquímicaElectrochemistryAigua -- ElectròlisiWater -- ElectrolysisAigües residuals -- DepuracióSewage -- PurificationThere is high interest in the recovery of phosphorus (P) from wastewater through crystallization processes. However, the addition of chemical reagents (e.g., sodium hydroxide) to raise the pH may result in high treatment costs and increased concentrations of undesired metal ions (e.g., sodium). As an alternative, in this research we considered electrochemical mediated precipitation at low current densities (0.4–1.2 A m−2) without using chemical reagents. For that purpose, a two-chamber electrochemical system was operated in batch for treating denitrified swine effluent (48 mg P L−1). By applying current at 1.2 A m−2, and targeting pH 11.5, a maximum P removal rate of 33.4 mmol P (L·d−1) was obtained while the P removal efficiency was above 90 %. New solids that formed mostly remained suspended in the catholyte. Before discharge, the catholyte effluent was recirculated to the anodic compartment to neutralize the pH, achieving a final pH of 6.4 ± 0.1. Chlorine (Cl2) production in the anodic compartment was favored by a small anode surface and a high initial pH of the catholyte. Although the production of chlorine achieved was limited (the highest concentration was 8.6 ± 0.1 mg Cl2 L−1) these findings represent a new opportunity for the recovery and onsite use of this side-product. Electrochemical impedance spectroscopy tests confirmed that the deposition of solids inside the cathodic compartment during the experimental period was limited. Membrane analysis revealed significant scaling of carbonate compounds. The electrochemical treatment described above was shown as a promising alternative to sodium hydroxide and sulfuric acid dosage for pH adjustment when crystallizing phosphate saltsOpen Access funding provided thanks to the CRUE-CSIC agreement with Elsevier6Elsevier2024info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionpeer-reviewedapplication/pdfhttp://hdl.handle.net/10256/25292http://hdl.handle.net/10256/25292Heliyon, 2024, vol. 10, núm. 17, p. e36766Articles publicats (D-B)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)Inglésinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.heliyon.2024.e36766info:eu-repo/semantics/altIdentifier/eissn/2405-8440Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:recercat.cat:10256/252922026-05-29T05:05:01Z |
| dc.title.none.fl_str_mv |
Reagent-free phosphorus precipitation from a denitrified swine effluent in a batch electrochemical system |
| title |
Reagent-free phosphorus precipitation from a denitrified swine effluent in a batch electrochemical system |
| spellingShingle |
Reagent-free phosphorus precipitation from a denitrified swine effluent in a batch electrochemical system Dessì, Emma Electroquímica Electrochemistry Aigua -- Electròlisi Water -- Electrolysis Aigües residuals -- Depuració Sewage -- Purification |
| title_short |
Reagent-free phosphorus precipitation from a denitrified swine effluent in a batch electrochemical system |
| title_full |
Reagent-free phosphorus precipitation from a denitrified swine effluent in a batch electrochemical system |
| title_fullStr |
Reagent-free phosphorus precipitation from a denitrified swine effluent in a batch electrochemical system |
| title_full_unstemmed |
Reagent-free phosphorus precipitation from a denitrified swine effluent in a batch electrochemical system |
| title_sort |
Reagent-free phosphorus precipitation from a denitrified swine effluent in a batch electrochemical system |
| dc.creator.none.fl_str_mv |
Dessì, Emma Company Masó, Emma Pous Rodríguez, Narcís Milia, Stefano Colprim Galceran, Jesús Magrí Aloy, Albert |
| author |
Dessì, Emma |
| author_facet |
Dessì, Emma Company Masó, Emma Pous Rodríguez, Narcís Milia, Stefano Colprim Galceran, Jesús Magrí Aloy, Albert |
| author_role |
author |
| author2 |
Company Masó, Emma Pous Rodríguez, Narcís Milia, Stefano Colprim Galceran, Jesús Magrí Aloy, Albert |
| author2_role |
author author author author author |
| dc.subject.none.fl_str_mv |
Electroquímica Electrochemistry Aigua -- Electròlisi Water -- Electrolysis Aigües residuals -- Depuració Sewage -- Purification |
| topic |
Electroquímica Electrochemistry Aigua -- Electròlisi Water -- Electrolysis Aigües residuals -- Depuració Sewage -- Purification |
| description |
There is high interest in the recovery of phosphorus (P) from wastewater through crystallization processes. However, the addition of chemical reagents (e.g., sodium hydroxide) to raise the pH may result in high treatment costs and increased concentrations of undesired metal ions (e.g., sodium). As an alternative, in this research we considered electrochemical mediated precipitation at low current densities (0.4–1.2 A m−2) without using chemical reagents. For that purpose, a two-chamber electrochemical system was operated in batch for treating denitrified swine effluent (48 mg P L−1). By applying current at 1.2 A m−2, and targeting pH 11.5, a maximum P removal rate of 33.4 mmol P (L·d−1) was obtained while the P removal efficiency was above 90 %. New solids that formed mostly remained suspended in the catholyte. Before discharge, the catholyte effluent was recirculated to the anodic compartment to neutralize the pH, achieving a final pH of 6.4 ± 0.1. Chlorine (Cl2) production in the anodic compartment was favored by a small anode surface and a high initial pH of the catholyte. Although the production of chlorine achieved was limited (the highest concentration was 8.6 ± 0.1 mg Cl2 L−1) these findings represent a new opportunity for the recovery and onsite use of this side-product. Electrochemical impedance spectroscopy tests confirmed that the deposition of solids inside the cathodic compartment during the experimental period was limited. Membrane analysis revealed significant scaling of carbonate compounds. The electrochemical treatment described above was shown as a promising alternative to sodium hydroxide and sulfuric acid dosage for pH adjustment when crystallizing phosphate salts |
| publishDate |
2024 |
| dc.date.none.fl_str_mv |
2024 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion peer-reviewed |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/10256/25292 http://hdl.handle.net/10256/25292 |
| url |
http://hdl.handle.net/10256/25292 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.heliyon.2024.e36766 info:eu-repo/semantics/altIdentifier/eissn/2405-8440 |
| dc.rights.none.fl_str_mv |
Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess |
| rights_invalid_str_mv |
Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ |
| eu_rights_str_mv |
openAccess |
| dc.format.none.fl_str_mv |
application/pdf |
| dc.publisher.none.fl_str_mv |
Elsevier |
| publisher.none.fl_str_mv |
Elsevier |
| dc.source.none.fl_str_mv |
Heliyon, 2024, vol. 10, núm. 17, p. e36766 Articles publicats (D-B) reponame:Recercat. Dipósit de la Recerca de Catalunya instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| instname_str |
Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| reponame_str |
Recercat. Dipósit de la Recerca de Catalunya |
| collection |
Recercat. Dipósit de la Recerca de Catalunya |
| repository.name.fl_str_mv |
|
| repository.mail.fl_str_mv |
|
| _version_ |
1869421596009037824 |
| score |
15,811543 |