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Study of pig manure digestate pre-treatment for subsequent valorisation by struvite

This work evaluates the release of phosphorus contained in the digestate from the anaerobic digestion of pig manure, through an acidification process. The objective of this acidification is to increase the amount of phosphorus available in the digestate liquid fraction and, subsequently, recover thi...

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Autores principales: Corona, Francisco, Hidalgo, Dolores, Martín-Marroquín, Jesús María, Meers, Erik
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9132833/
https://www.ncbi.nlm.nih.gov/pubmed/33010012
http://dx.doi.org/10.1007/s11356-020-10918-6
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author Corona, Francisco
Hidalgo, Dolores
Martín-Marroquín, Jesús María
Meers, Erik
author_facet Corona, Francisco
Hidalgo, Dolores
Martín-Marroquín, Jesús María
Meers, Erik
author_sort Corona, Francisco
collection PubMed
description This work evaluates the release of phosphorus contained in the digestate from the anaerobic digestion of pig manure, through an acidification process. The objective of this acidification is to increase the amount of phosphorus available in the digestate liquid fraction and, subsequently, recover this element by chemical precipitation in the form of struvite or calcium phosphate. Two digestate samples (one fresh and one old) were studied and treated by adding various amounts of sulphuric acid to the different digestate fractions (raw digestate, solid fraction and liquid fraction). For the raw digestate, phosphorus releases higher than 95% were obtained for pH 4.0. In the last part of the experiment, the influence of acid pre-treatment on the reaction yield of phosphorus precipitation, in the form of struvite or calcium phosphate, was determined. Improvements in reaction yield were obtained up to 15% for struvite and 80% for calcium phosphate, increasing also in 7.5 times the amount of phosphorus available in the digestate liquid fraction, for both cases.
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spelling pubmed-91328332022-05-27 Study of pig manure digestate pre-treatment for subsequent valorisation by struvite Corona, Francisco Hidalgo, Dolores Martín-Marroquín, Jesús María Meers, Erik Environ Sci Pollut Res Int Waste and Biomass Management & Valorization This work evaluates the release of phosphorus contained in the digestate from the anaerobic digestion of pig manure, through an acidification process. The objective of this acidification is to increase the amount of phosphorus available in the digestate liquid fraction and, subsequently, recover this element by chemical precipitation in the form of struvite or calcium phosphate. Two digestate samples (one fresh and one old) were studied and treated by adding various amounts of sulphuric acid to the different digestate fractions (raw digestate, solid fraction and liquid fraction). For the raw digestate, phosphorus releases higher than 95% were obtained for pH 4.0. In the last part of the experiment, the influence of acid pre-treatment on the reaction yield of phosphorus precipitation, in the form of struvite or calcium phosphate, was determined. Improvements in reaction yield were obtained up to 15% for struvite and 80% for calcium phosphate, increasing also in 7.5 times the amount of phosphorus available in the digestate liquid fraction, for both cases. Springer Berlin Heidelberg 2020-10-03 2021 /pmc/articles/PMC9132833/ /pubmed/33010012 http://dx.doi.org/10.1007/s11356-020-10918-6 Text en © The Author(s) 2020, corrected publication 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Waste and Biomass Management & Valorization
Corona, Francisco
Hidalgo, Dolores
Martín-Marroquín, Jesús María
Meers, Erik
Study of pig manure digestate pre-treatment for subsequent valorisation by struvite
title Study of pig manure digestate pre-treatment for subsequent valorisation by struvite
title_full Study of pig manure digestate pre-treatment for subsequent valorisation by struvite
title_fullStr Study of pig manure digestate pre-treatment for subsequent valorisation by struvite
title_full_unstemmed Study of pig manure digestate pre-treatment for subsequent valorisation by struvite
title_short Study of pig manure digestate pre-treatment for subsequent valorisation by struvite
title_sort study of pig manure digestate pre-treatment for subsequent valorisation by struvite
topic Waste and Biomass Management & Valorization
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9132833/
https://www.ncbi.nlm.nih.gov/pubmed/33010012
http://dx.doi.org/10.1007/s11356-020-10918-6
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