EFFECTS OF CO-FIRING SEWAGE SLUDGE AND PLANT BIOMASS ONPHOSPHORUS AND POTASSIUM COMPOUNDS IN INCINERATED ASH
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- MIYAMOTO Toyohisa
- (国研)土木研究所 先端材料資源研究センター
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- NAKAMURA Yuji
- 月島アクアソリューション株式会社
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- TAKAOKA Masaki
- 京都大学大学院 工学研究科都市環境工学専攻
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- TANAKA Shinobu
- 京都大学大学院 工学研究科都市環境工学専攻
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- SHIOTA Kenji
- 京都大学大学院 工学研究科都市環境工学専攻
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- OSHITA Kazuyuki
- 京都大学大学院 工学研究科都市環境工学専攻
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- ITO Ryusei
- 株式会社タクマ 技術センター
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- TANIFUJI Keishi
- (元)(国研)土木研究所 先端材料資源研究センター
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- KOBAYASHI Toshiki
- 月島アクアソリューション株式会社
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- SHISHIDA Kenichi
- 株式会社タクマ 技術センター
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- OKAYASU Yuji
- (国研)土木研究所 先端材料資源研究センター
Bibliographic Information
- Other Title
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- 下水汚泥と草木バイオマスの混焼による焼却灰中のリン・カリウム形態変化
Abstract
<p> To investigate the changes in phosphorus and potassium during co-firing of sewage sludge with grass and woody biomass and to assess the potential of incinerated sewage sludge ash as a fertilizer, a laboratory incinerator was used to conduct co-firing tests of sewage sludge with cut grass and tree prunings. The incinerated ash resulting from the tests was subjected to various analyses (XRF, XRD and XAFS) and thermodynamic equilibrium calculations, and the compositional changes due to co-firing were summarized. Furthermore, the properties of incinerated ash as a fertilizer were evaluated through leaching tests. The addition of grass biomass during co-firing was found increase available potassium, which reacted with aluminum and silicate compounds in the sludge to form aluminosilicates. Additionally, phosphorus was transferred to calcium compounds and other compounds during the reaction process. Moreover, co-firing with both grass and woody biomass was found to enhance the citric acid–soluble forms of potassium and phosphorus available to plants, thereby increasing the value of incinerated ash as a fertilizer.</p>
Journal
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- Japanese Journal of JSCE
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Japanese Journal of JSCE 79 (25), n/a-, 2023
Japan Society of Civil Engineers
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Details 詳細情報について
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- CRID
- 1390299472998416128
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- ISSN
- 24366021
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
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- Abstract License Flag
- Disallowed