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Fractional recovery of phosphorus and heavy metals from sewage sludge incinerated ash based on acidic solubilization

Research Project

Project/Area Number 24560670
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Civil and environmental engineering
Research InstitutionFukui University of Technology

Principal Investigator

TAKASHIMA Masanobu  福井工業大学, 工学部, 教授 (30257498)

Co-Investigator(Renkei-kenkyūsha) SHIMIZU Yoshihisa  京都大学, 大学院工学研究科, 教授 (20226260)
Project Period (FY) 2012-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywordsリン回収 / 下水汚泥焼却灰 / 酸 / アルカリ / リン酸鉄 / リン酸アルミニウム / リン酸カルシウム / リン / 焼却灰 / 下水汚泥 / 酸溶出法 / 重金属 / 酸溶出 / 重金属回収
Outline of Final Research Achievements

In this study, the recovery of phosphate solution or calcium phosphate was attempted from sewage sludge incinerated ash, based on acid leaching of the incinerated ash and subsequent precipitation through iron phosphate and/or aluminium phosphate. The precipitaton of iron phosphate and/or aluminium phosphate from the acid leaching solution was performed at the pH of about 2 and 4, respectively. Adding sodium hydroxide, metals were separated from the precipitate, and phosphate was dissolved into the solution. It was confirmed that overall phosphorus recovery of 71-87% from the incinerated ash was possible with minimized heavy metal contents. On the other hands, it was indicated that heavy metals can be recovered as concentrated heavy metal solutions.

Report

(4 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • 2012 Research-status Report
  • Research Products

    (3 results)

All 2015 2014 2012

All Presentation (3 results)

  • [Presentation] 下水汚泥焼却灰からのリン酸鉄を介したリン回収の基礎検討2015

    • Author(s)
      高島正信
    • Organizer
      第49回日本水環境学会年会
    • Place of Presentation
      金沢大学
    • Year and Date
      2015-03-16 – 2015-03-18
    • Related Report
      2014 Annual Research Report
  • [Presentation] Fundamental study on fructional recovery of iron phosphate from acidified incinerated ash solution2014

    • Author(s)
      M. Takashima
    • Organizer
      The 3R International Scientific Conference on Material Cycles and Waste management
    • Place of Presentation
      京都大学
    • Related Report
      2013 Research-status Report
  • [Presentation] Study on fractional recovery of phosphorus from incinerated ash and anaerobically digested sludge2012

    • Author(s)
      M. Takashima
    • Organizer
      The 2012 World Congress on Advances in Civil, Environmental and Materials Research
    • Place of Presentation
      Seoul, South Korea
    • Related Report
      2012 Research-status Report

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Published: 2013-05-31   Modified: 2019-07-29  

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