Deng, Yaxin, Zhang, Tao, Clark, James orcid.org/0000-0002-5860-2480 et al. (6 more authors) (2020) Mechanisms and modelling of phosphorus solid-liquid transformation during the hydrothermal processing of swine manure. Green Chemistry. pp. 5628-5638. ISSN 1463-9262
Abstract
Phosphorus (P) recovery from swine manure by hydrothermal processes has recently attracted considerable interest; however, research has been limited by knowledge gaps and challenges in understanding the mechanisms of soluble and insoluble P transformations and the evaluation of the effects of the reaction conditions. In this study, the transformation mechanisms were investigated and the soluble and insoluble phosphorus distributions in swine manure during the hydrothermal processes were modelled. By increasing the severity of the exogenous conditions, P transformed from insoluble to soluble, and then polymerized with the formation of orthophosphates; meanwhile, the formation of hydrochar was enhanced thereby facilitating further P reclamation. The effects of the endogenous conditions showed there may be a threshold of calcium content, which limited the combination of Ca and P. Calcium ions mainly reacted with P in the form of hydroxyapatite and octacalcium phosphate. The modelling and prediction results showed that a coalification model gives a good fit (RSP2= 0.9205 andRIP2= 0.8559) for changes in the concentrations of solid total P and liquid inorganic P. The prediction level of mean absolute error was good as well (MAESP= 0.74 mg g−1and MAEIP= 0.62 mg g−1). These findings provide a range of scientific opportunities for achieving a comprehensive understanding of the basis of sustainable utilisation of P.
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Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details. |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Chemistry (York) |
Depositing User: | Pure (York) |
Date Deposited: | 07 Oct 2020 15:40 |
Last Modified: | 07 Mar 2025 00:07 |
Published Version: | https://doi.org/10.1039/d0gc01281e |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1039/d0gc01281e |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:166446 |
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Description: Mechanisms and modelling of ph osphorus solid–liquid transformation during the hydrothermal processing of swine manure