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Development Of Phosphorus Adsorption Removal Using Ceramics

Research Project

Project/Area Number 16510056
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Environmental technology/Environmental materials
Research InstitutionIbaraki University

Principal Investigator

KAMIKO Naoyuki  Ibaraki University, College of Engineering, Associate Professor, 工学部, 助教授 (70251345)

Project Period (FY) 2004 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2005: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2004: ¥2,700,000 (Direct Cost: ¥2,700,000)
Keywordsphosphorus removal / adsorption / phosphorus recover / ceramics / dissolved iron / 富栄養化 / リン吸着除去 / 鉄系吸着剤
Research Abstract

To solve the problems of eutrophication of lakes, nutrient removal, especially phosphorus removal, is being desired. Focusing adsorption removal, this research used ceramics pretreated by iron sulphate and basic investigation was conducted.
The phenomenon of increase of adsorption capacity of certain ceramics for phosphorus caused by iron sulphate pretreatment could be explained by the gradual release of ferrous ion to water resulting in the formation of iron phosphate precipitation. On the other hand, ceramics which was washed till no iron release was observed showed adsorption capacity that could be due to the existence of ferrous ion on the surface of the ceramics.
Adsorbed phosphorus could be detouched by washing with alkali.
Released iron was bivalent but iron phosphate precipitation was formed by trivalent iron. To clarify the mechanisms of iron phosphate formation, ozonation was conducted in the ferrous iron and phosphate suspension to oxidize the ferrous iron. Ozonation resulted in the large amount of iron phosphate precipitaion, that is the mechanisms of phosphorus removal. Namely, to remove phosphate in water, if ferrous ion and oxidizer were existed, ferrous ion would settle down with phosphate after oxidized.
To design the ceramics for phosphate removal, ferrous ion rather than ferric ion should be on the surface of the ceramics. Furthermore, if oxidation power could be controlled, both of phosphate removal and iron discharge could be managed and a new process for phosphorus removal could be developed.

Report

(3 results)
  • 2005 Annual Research Report   Final Research Report Summary
  • 2004 Annual Research Report
  • Research Products

    (3 results)

All 2005

All Journal Article (3 results)

  • [Journal Article] セラミックスを用いた水からの回分式リン吸着除去の速度と機構に関する基礎的研究2005

    • Author(s)
      繁村佳恵, 神子直之
    • Journal Title

      水環境学会誌 28

      Pages: 131-137

    • NAID

      10014378873

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] Basic Study On The Rate And Mechanisms Of Phosphorus Removal From Water In Batch Reactor Using Ceramics2005

    • Author(s)
      Yoshie SHEGEMURA, Naoyuki KAMIKO
    • Journal Title

      Journal Of Japan Society On Water Environment Vol.28, No.2

      Pages: 131-137

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] セラミックスを用いた水からの回分式リン吸着除去の速度と機構に関する基礎的研究2005

    • Author(s)
      繁村佳恵, 神子直之
    • Journal Title

      水環境学会誌 28・2

      Pages: 131-137

    • NAID

      10014378873

    • Related Report
      2004 Annual Research Report

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Published: 2004-04-01   Modified: 2016-04-21  

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