Assessment on the Stability of Radiocesium in Sludge from a Water Purification Plant by a Leachate Test and a Sequential Extraction Test

• SAITO Yoichi

  Kiryu Bureau of Waterworks Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University

• KOIKE Yuko

  Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University

• MATSUSHIMA Toru

  Kiryu Bureau of Waterworks

• NAKAJIMA Nobuhiro

  Kiryu Bureau of Waterworks

• AIZAWA Shoichi

  Division of Molecular Science, Faculty of Science and Technology, Gunma University

• TSUNODA Kin-ichi

  Division of Molecular Science, Faculty of Science and Technology, Gunma University

• MORI Masanobu

  Division of Environmental Engineering Science, Faculty of Science and Technology, Gunma University

• ITABASHI Hideyuki

  Division of Environmental Engineering Science, Faculty of Science and Technology, Gunma University

Bibliographic Information

Other Title

• 逐次抽出試験及び溶出試験による浄水処理発生土中の放射性セシウムの安定性に関する評価
• チクジ チュウシュツ シケン オヨビ ヨウシュツシケン ニ ヨル ジョウスイ ショリ ハッセイ ドチュウ ノ ホウシャセイ セシウム ノ アンテイセイ ニ カンスル ヒョウカ

Abstract

Radiocesium released by the Fukushima Daiichi nuclear power plant accident fell in mountainous areas located in northern and western regions of Gunma Prefecture. Therefore, several research groups measured the radiocesium in the sediments in lakes and rivers, as well as soils around rivers, lakes and mountains. In this study, we investigated not only the concentration of radiocesium contained in wasted-sludge samples from a water purification plant, but also the leachate behaviors from the sludge to water. As results, the concentrations of radiocesium in wasted-sludge samples collected from a water purification plant at Kiryu Bureau of Waterworks on 2013 were obviously lower than that on 2011. Additionally, the degrees of radiocesium concentrations were related to those of turbidities in raw water of the water supply. Through leachate tests of radiocesium using aqueous solutions adjusted from pH 2 to pH 10, the risk leaching from wasted-sludge to water was considered to be low without any regard to the pH values of the solutions. Furthermore, the chemical forms of radiocesium in the sludge by a sequential extraction method were expected to mainly exist as residue and oxide forms, which are classified as fractions hardly eluted in nature.

Journal

• BUNSEKI KAGAKU

  BUNSEKI KAGAKU 62 (11), 1013-1021, 2013

  The Japan Society for Analytical Chemistry

Keywords

• radiocesium
• water purification plant
• sludge
• leachate test
• sequential extraction

Details

• CRID: 1390001204660272768
• NII Article ID: 10031196849
• NII Article ID: 130003382330
• NII Book ID: AN00222633
• DOI: 10.2116/bunsekikagaku.62.1013
• COI: 1:CAS:528:DC%2BC3sXhvVyhurzO
• NDL BIB ID: 025010187
• ISSN: 05251931
• Web Site: http://id.ndl.go.jp/bib/025010187
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I025010187
• Web Site: https://www.jstage.jst.go.jp/article/bunsekikagaku/62/11/62_1013/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed