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Effect of Corn Straw Blending on Phosphorus Specification and Bioavailability of Incinerated Sludge Ash
[Image: see text] Phosphorus is a depletable resource, and the consumption of phosphorus fertilizer increases with the growing population size. Phosphorus recycled from incinerated sludge ash can be a complement to phosphatic fertilizers in districts suffering from phosphorus resource shortages (e.g...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2022
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9026084/ https://www.ncbi.nlm.nih.gov/pubmed/35474809 http://dx.doi.org/10.1021/acsomega.2c00444 |
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author | Dong, Yang Yu, Rongzhen Yan, Tinggui Zhao, Xiaojiao Zhang, Wei |
author_facet | Dong, Yang Yu, Rongzhen Yan, Tinggui Zhao, Xiaojiao Zhang, Wei |
author_sort | Dong, Yang |
collection | PubMed |
description | [Image: see text] Phosphorus is a depletable resource, and the consumption of phosphorus fertilizer increases with the growing population size. Phosphorus recycled from incinerated sludge ash can be a complement to phosphatic fertilizers in districts suffering from phosphorus resource shortages (e.g., Germany, Japan, and Sweden). The apatite inorganic phosphorus (AP) content in incinerated sludge ash is a key factor influencing the recoverability and bioavailability. Biomass straw is rich in calcium and magnesium minerals and can be used as an additive to be blended with sludge to increase the AP content. However, most of the current studies added excessive amounts of calcium-based or biomass additives, and the bioavailability of various Ca–Mg–P minerals generated after the addition of biomass has not been systematically discussed. In this study, the changes of the phosphorus form in the mixed sludge and biomass with Ca/P in the range of 1.0–2.5 are studied, and the influence of temperature and additives on the phosphorus form and the bioavailability of phosphorus in the ash samples are discussed by combining X-ray diffraction and citric acid (CA) leaching experiments. The AP content is very low in the residue of the sludge or corn straw (CS) that has been burned individually. The sludge and the blended sludge and CS were incinerated at various temperatures. As the incineration temperature increased, the conversion of non-apatite inorganic phosphorus (NAIP) to AP was promoted, but the bioavailability did not change until 1050 °C for samples with a Ca/P of 2.5. In the range from 750 to 950 °C, higher temperature promotes the formation of Ca(2)P(2)O(7) and CaP(2)O(6). CaP(2)O(6) is insoluble in CA; thus, the bioavailability changes little from 750 to 950 °C, although the AP content increases. With the increase of Ca/P, the conversion of NAIP to AP and the bioavailability of phosphorus were promoted. For the blended sludge and CS ash, Ca(7)Mg(2)P(6)O(24) appears at 950 and 1050 °C and the bioavailability also increases. |
format | Online Article Text |
id | pubmed-9026084 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-90260842022-04-25 Effect of Corn Straw Blending on Phosphorus Specification and Bioavailability of Incinerated Sludge Ash Dong, Yang Yu, Rongzhen Yan, Tinggui Zhao, Xiaojiao Zhang, Wei ACS Omega [Image: see text] Phosphorus is a depletable resource, and the consumption of phosphorus fertilizer increases with the growing population size. Phosphorus recycled from incinerated sludge ash can be a complement to phosphatic fertilizers in districts suffering from phosphorus resource shortages (e.g., Germany, Japan, and Sweden). The apatite inorganic phosphorus (AP) content in incinerated sludge ash is a key factor influencing the recoverability and bioavailability. Biomass straw is rich in calcium and magnesium minerals and can be used as an additive to be blended with sludge to increase the AP content. However, most of the current studies added excessive amounts of calcium-based or biomass additives, and the bioavailability of various Ca–Mg–P minerals generated after the addition of biomass has not been systematically discussed. In this study, the changes of the phosphorus form in the mixed sludge and biomass with Ca/P in the range of 1.0–2.5 are studied, and the influence of temperature and additives on the phosphorus form and the bioavailability of phosphorus in the ash samples are discussed by combining X-ray diffraction and citric acid (CA) leaching experiments. The AP content is very low in the residue of the sludge or corn straw (CS) that has been burned individually. The sludge and the blended sludge and CS were incinerated at various temperatures. As the incineration temperature increased, the conversion of non-apatite inorganic phosphorus (NAIP) to AP was promoted, but the bioavailability did not change until 1050 °C for samples with a Ca/P of 2.5. In the range from 750 to 950 °C, higher temperature promotes the formation of Ca(2)P(2)O(7) and CaP(2)O(6). CaP(2)O(6) is insoluble in CA; thus, the bioavailability changes little from 750 to 950 °C, although the AP content increases. With the increase of Ca/P, the conversion of NAIP to AP and the bioavailability of phosphorus were promoted. For the blended sludge and CS ash, Ca(7)Mg(2)P(6)O(24) appears at 950 and 1050 °C and the bioavailability also increases. American Chemical Society 2022-04-05 /pmc/articles/PMC9026084/ /pubmed/35474809 http://dx.doi.org/10.1021/acsomega.2c00444 Text en © 2022 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Dong, Yang Yu, Rongzhen Yan, Tinggui Zhao, Xiaojiao Zhang, Wei Effect of Corn Straw Blending on Phosphorus Specification and Bioavailability of Incinerated Sludge Ash |
title | Effect of Corn Straw Blending on Phosphorus Specification
and Bioavailability of Incinerated Sludge Ash |
title_full | Effect of Corn Straw Blending on Phosphorus Specification
and Bioavailability of Incinerated Sludge Ash |
title_fullStr | Effect of Corn Straw Blending on Phosphorus Specification
and Bioavailability of Incinerated Sludge Ash |
title_full_unstemmed | Effect of Corn Straw Blending on Phosphorus Specification
and Bioavailability of Incinerated Sludge Ash |
title_short | Effect of Corn Straw Blending on Phosphorus Specification
and Bioavailability of Incinerated Sludge Ash |
title_sort | effect of corn straw blending on phosphorus specification
and bioavailability of incinerated sludge ash |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9026084/ https://www.ncbi.nlm.nih.gov/pubmed/35474809 http://dx.doi.org/10.1021/acsomega.2c00444 |
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