ID 109944
著者
杉山, 茂 Department of Advanced Materials, Institute of Technology and Science, Tokushima University|Department of Resource Circulation Engineering, Center for Frontier Research of Engineering, Tokushima University 徳島大学 教育研究者総覧 KAKEN研究者をさがす
木寅, 龍太 Department of Chemical Science and Technology, Tokushima University
木下, はるか Department of Chemical Science and Technology, Tokushima University
中川, 敬三 Department of Advanced Materials, Institute of Technology and Science, Tokushima University|Department of Resource Circulation Engineering, Center for Frontier Research of Engineering, Tokushima University KAKEN研究者をさがす
加藤, 雅裕 Department of Advanced Materials, Institute of Technology and Science, Tokushima University 徳島大学 教育研究者総覧 KAKEN研究者をさがす
中崎, 清彦 Department of International Development Engineering, Graduate School of Engineering, Tokyo Institute of Technology
キーワード
Composted Chicken Manure
Recovery of Phosphate
Calcium Phosphate
資料タイプ
学術雑誌論文
抄録
To recover phosphorus from composted chicken manure, a batch method with aqueous HNO3, HCl and H2SO4 was used to examine the elution behavior of the aqueous calcium and phosphate contained in the manure. Since the main components in manure are Ca2+ and K+ along with PO4 3- and those ions can be dissolved using an acidic eluate, it was expected that most of the aqueous Ca2+, K+ and PO4 3- could be obtained via the elution. Therefore, it seemed plausible that the removal of the aqueous K+ obtained by the elution of composted chicken manure would result in the formation of calcium phosphates. If calcium phosphates are formed, they can be used for phosphate rock, which also consists of various calcium phosphates. When using 0.1 mol/L HNO3, HCl or H2SO4, the elution behavior of the PO4 3- was not dependent on the acids. However, 0.1 mol/L H2SO4 was not sufficient for the elution of Ca2+, probably due to the precipitation of the calcium sulfate. The eluted amount of K+ using 0.1 mol/L HNO3 was lower than that using 0.1 mol/L of either HCl or H2SO4. Since the poor elution of K+ should enrich the concentrations of Ca2+ and PO4 3- in the acidic aqueous solution after the elution, it was suggested that aqueous HNO3 would be suitable as an eluate in the present system. After the elution of the composted chicken manure, when 0.1 mol/L HNO3 was used to adjust the solution pH of the acidic aqueous solution to greater than 6, Ca2+ and PO4 3- were precipitated, but K+ was not. The precipitate was calcium hydroxyapatite, one of the typical components of phosphate rock, which showed that composted chicken manure could be replaced phosphate rock as a new source of phosphorus.
掲載誌名
Journal of Chemical Engineering of Japan
ISSN
00219592
cat書誌ID
AA00709658
49
2
開始ページ
224
終了ページ
228
並び順
224
発行日
2016-02
備考
Copyright © 2016 The Society of Chemical Engineers, Japan
EDB ID
出典
Journal of Chemical Engineering of Japan (2016) Vol.49 No.2 p.224-228 (DOI: 10.1252/jcej.15we111)
出版社版URL
フルテキストファイル
言語
eng
著者版フラグ
著者版
部局
理工学系