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Phosphate Recovery from Swine Wastewater by a Struvite Precipitation Electrolyzer
Struvite precipitation electrolyzers are interesting environmental electrochemical reactors with potential applications for efficient phosphate recovery from wastewater, such as swine wastewater. In this paper, effects of phosphate concentration and pH on the struvite precipitation reaction rate wer...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6586645/ https://www.ncbi.nlm.nih.gov/pubmed/31222075 http://dx.doi.org/10.1038/s41598-019-45085-3 |
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author | Wang, Fang Fu, Rao Lv, Hang Zhu, Guoliang Lu, Binwei Zhou, Zheng Wu, Xu Chen, Huanchun |
author_facet | Wang, Fang Fu, Rao Lv, Hang Zhu, Guoliang Lu, Binwei Zhou, Zheng Wu, Xu Chen, Huanchun |
author_sort | Wang, Fang |
collection | PubMed |
description | Struvite precipitation electrolyzers are interesting environmental electrochemical reactors with potential applications for efficient phosphate recovery from wastewater, such as swine wastewater. In this paper, effects of phosphate concentration and pH on the struvite precipitation reaction rate were investigated. When phosphate concentration decreased from 100 to 20 mg/L, the precipitation reaction rate decreased from 396.65 mg/L·h to 70.46 mg/L·h, indicating that the reaction rate of struvite crystallization can be controlled by adjusting pH according to the change of phosphate concentration. Numerical simulation of different currents and flow rates on pH in the electrolyzer was developed and validated, and pH in the electrolyzer was dynamically measured along the distribution point of the flow field. We aimed to test the treatment effect of the electrolyzer on actual swine wastewater. When the flow rate was 20 L/h and constant voltage was 4 V, the electrolyzer was run continuously for 5 hours with the volume of 50 L. The phosphate recovery efficiency reached 99.51%, and the time-space yield of the struvite precipitation electrolyzer was 0.0219 kg/m2·h. The harvested struvite particles were identified by XRD and SEM-EDS, which presented orthorhombic structure and high purity. Economic analysis demonstrated that the proposed electrolyzer was cost-effective and technologically convenient. |
format | Online Article Text |
id | pubmed-6586645 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-65866452019-06-26 Phosphate Recovery from Swine Wastewater by a Struvite Precipitation Electrolyzer Wang, Fang Fu, Rao Lv, Hang Zhu, Guoliang Lu, Binwei Zhou, Zheng Wu, Xu Chen, Huanchun Sci Rep Article Struvite precipitation electrolyzers are interesting environmental electrochemical reactors with potential applications for efficient phosphate recovery from wastewater, such as swine wastewater. In this paper, effects of phosphate concentration and pH on the struvite precipitation reaction rate were investigated. When phosphate concentration decreased from 100 to 20 mg/L, the precipitation reaction rate decreased from 396.65 mg/L·h to 70.46 mg/L·h, indicating that the reaction rate of struvite crystallization can be controlled by adjusting pH according to the change of phosphate concentration. Numerical simulation of different currents and flow rates on pH in the electrolyzer was developed and validated, and pH in the electrolyzer was dynamically measured along the distribution point of the flow field. We aimed to test the treatment effect of the electrolyzer on actual swine wastewater. When the flow rate was 20 L/h and constant voltage was 4 V, the electrolyzer was run continuously for 5 hours with the volume of 50 L. The phosphate recovery efficiency reached 99.51%, and the time-space yield of the struvite precipitation electrolyzer was 0.0219 kg/m2·h. The harvested struvite particles were identified by XRD and SEM-EDS, which presented orthorhombic structure and high purity. Economic analysis demonstrated that the proposed electrolyzer was cost-effective and technologically convenient. Nature Publishing Group UK 2019-06-20 /pmc/articles/PMC6586645/ /pubmed/31222075 http://dx.doi.org/10.1038/s41598-019-45085-3 Text en © The Author(s) 2019 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Wang, Fang Fu, Rao Lv, Hang Zhu, Guoliang Lu, Binwei Zhou, Zheng Wu, Xu Chen, Huanchun Phosphate Recovery from Swine Wastewater by a Struvite Precipitation Electrolyzer |
title | Phosphate Recovery from Swine Wastewater by a Struvite Precipitation Electrolyzer |
title_full | Phosphate Recovery from Swine Wastewater by a Struvite Precipitation Electrolyzer |
title_fullStr | Phosphate Recovery from Swine Wastewater by a Struvite Precipitation Electrolyzer |
title_full_unstemmed | Phosphate Recovery from Swine Wastewater by a Struvite Precipitation Electrolyzer |
title_short | Phosphate Recovery from Swine Wastewater by a Struvite Precipitation Electrolyzer |
title_sort | phosphate recovery from swine wastewater by a struvite precipitation electrolyzer |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6586645/ https://www.ncbi.nlm.nih.gov/pubmed/31222075 http://dx.doi.org/10.1038/s41598-019-45085-3 |
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