徳島大学 教育・研究者情報データベース(EDB)

1. 徳島大学.大学院社会産業理工学研究部.理工学域.応用化学系.化学プロセス工学分野(2017年4月1日〜)
2. 徳島大学.先端技術科学教育部.物質生命システム工学専攻.化学機能創生コース.化学プロセス工学講座(2012年4月1日〜)

1. 杉山 茂

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2. (英) Liu En-Hong / (日) 劉 恩宏 / (読) りゅう えんほん

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3. (英) Imanishi Kenta / (日) 今西 健太 / (読) いまにし けんた

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4. 霜田 直宏([徳島大学.大学院社会産業理工学研究部.理工学域.応用化学系.化学プロセス工学分野]/徳島大学.理工学部.理工学科.応用化学システムコース.化学プロセス工学講座/徳島大学.工学部.化学応用工学科.化学プロセス工学講座/徳島大学.先端技術科学教育部.物質生命システム工学専攻.化学機能創生コース.化学プロセス工学講座)

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5. 加藤 雅裕([徳島大学.大学院社会産業理工学研究部.理工学域.応用化学系.化学プロセス工学分野]/[徳島大学.理工学部.理工学科.応用化学システムコース.化学プロセス工学講座])

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6. (英) Liu Jhy-Chern / (日) 劉 志成 / (読) りう じぇいちゃん

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(英) Dependence of Phosphorus Recovery on Acid Type during Dissolution-Precipitation Treatment of Incineration Ash of Chicken Manure

(英) In order to utilize chicken manure as a source of phosphorus, we used dissolution-precipitation treatment to recover phosphorus from the incineration ash of chicken manure (IACM), which was used as fuel to power a boiler. In order to recover useful phosphorus-containing solids from IACM, it was dissolved into aqueous solutions of either nitric acid, hydrochloric acid, or sulfuric acid to elute phosphorus together with various component elements, followed by the use of aqueous NH3 to form a precipitate containing phosphorus. In using nitric acid and hydrochloric acid, calcium phosphate species such as calcium hydroxyapatite (Ca10(PO4)6(OH)2) and monetite (CaHPO4) were obtained following the precipitation treatment. By contrast, the use of sulfuric acid resulted in the precipitation of magnesium ammonium phosphate (MAP) species such as struvite (MgNH4PO4∙6H2O) and dittmarite (MgNH4PO4∙H2O). Both the calcium phosphate and MAP species can be used as a slow-acting fertilizer containing phosphorus, while the MAP species could be simultaneously used as a slow-acting fertilizer containing nitrogen. It is noteworthy that the calcium phosphate species obtained in the present study was equivalent to phosphate rock, which is widely used as a raw material in phosphorous-based industries, and the natural sources of this material could be depleted in the near future. Though IACM has not been used effectively until now, this new resource shows promise as s viable alternative to the dwindling supply of the natural sources of phosphorus.

1. (英) Incineration Ash
2. (英) Chicken Manure
3. (英) Recovery of Phosphorus
4. (英) Hydroxyapatite
5. (英) Struvite