ID | 113780 |
Author |
Sugiyama, Shigeru
Tokushima University
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Wakisaka, Kenji
Tokushima University
Imanishi, Kenta
Tokushima University
Kurashina, Masashi
Tokushima University
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Katoh, Masahiro
Tokushima University
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Liu, Jhy-Chern
National Taiwan University of Science and Technology
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Keywords | Incineration Ash
Chicken Manure
Recovery of Phosphorus
Phosphate Rock Equivalent
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Content Type |
Journal Article
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Description | In order to obtain calcium phosphates - a phosphate rock equivalent - from the incineration ash of chicken manure, which is obtained from power generation systems that use the manure for fuel, incineration ash was treated with an aqueous solution of nitric acid to elute phosphorus. By using 0.3 M of HNO3, most of the phosphorus could be eluted from 1.0 g of ash within 0.1 h. Compared with the composted chicken manure that was previously examined in our laboratory, the concentration of HNO3 was increased for this session of elution. Using the incineration ash of chicken manure made it possible to remove inorganic species at a lower boiling or sublimation temperature, and organic species by calcination in the power generation system. Compared with composted chicken manure, the concentrations of phosphorus contained in the incineration ash and the nitric acid extract were higher in the incineration ash. XRD analysis showed that the obtained nitric acid extract could be treated with aqueous NH3 to form a precipitation of poorly-crystallized calcium hydroxyapatite (Ca10(PO4)6(OH)2), which is one of main components in phosphate rock. In order to confirm the formation and purity of calcium phosphate species, the precipitation calcination was conducted at 1,078 K for 5 h. XRD revealed that the calcined solid was tricalcium phosphate, and no contamination was evident. These results reveal that a phosphate rock equivalent could be easily obtained from the incineration ash of chicken manure, which means that approximately 14% of the phosphate rock that is currently being imported into Japan could be replaced by this product.
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Journal Title |
Journal of Chemical Engineering of Japan
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ISSN | 00219592
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NCID | AA00709658
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Publisher | The Society of Chemical Engineers, Japan
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Volume | 52
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Issue | 9
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Start Page | 778
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End Page | 782
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Published Date | 2019-09-20
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Rights | Copyright © 2019 The Society of Chemical Engineers, Japan
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EDB ID | |
DOI (Published Version) | |
URL ( Publisher's Version ) | |
FullText File | |
language |
eng
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TextVersion |
Author
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departments |
Science and Technology
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