ベントナイトのメチレンブルー吸着量試験 : 試験方法による結果の相違について

• 三好 陽子

  産業技術総合研究所地圏資源環境研究部門鉱物資源研究グループ

• 宮腰 久美子

  産業技術総合研究所地圏資源環境研究部門鉱物資源研究グループ

• 高木 哲一

  産業技術総合研究所地圏資源環境研究部門鉱物資源研究グループ

書誌事項

タイトル別名

• Methylene Blue Adsorption Test Method for Bentonite : Dependence of the Results on the Procedures
• ベントナイト ノ メチレンブルー キュウチャクリョウ シケン : シケン ホウホウ ニ ヨル ケッカ ノ ソウイ ニ ツイテ

抄録

The methylene blue adsorption test measures the amount of methylene blue (MB) adsorbed on montmorillonite in bentonite. The test is one of the most important methods to estimate a quality of the bentonite. Therefore, the test is conducted by most of the bentonite companies such as mining companies, general construction companies and foundries. However, the detail procedures of the test vary among different companies. This study reports the differences in the amount of MB adsorbed on bentonite caused by the different procedures. We used the Mikawa montmorillonite which is the Clay Science Society of Japan (CSSJ) Reference Clay Sample JCSS-3102 Montmorillonite "Mikawa". The amount of MB adsorbed on bentonite dispersed in pure water with sulfuric acid was about 13% smaller than that in tetrasodium pyrophosphate (TSPP) solution. The amount of MB adsorbed on bentonite dispersed by boiling was about 9% larger than that by ultrasonic treatment. In the bentonite-dispersed solution, the initial amount of MB is normally about 75% to the amount of MB at the end point. When the initial amount of MB was < 50%. the amount of MB adsorbed on bentonite was about 5-7% smaller than when the initial amount was normal. To make halo around spots on a filter paper, various instruments (stirring glass rod, komagome pipette, and micropipette) and various filter papers (ADVANTEC No.131, No.2, No.5C and No.6) are used in the bentonite companies. First appearances of halo did not vary, but 1.5-2 mm width halo varied among the different instruments and filter papers. When the filter paper was No.2 or No.6, the 1.5-2 mm width halo was reached by about 4-6% smaller amount of MB than the other filter papers.

収録刊行物

• 粘土科学

  粘土科学 54 (2), 65-73, 2016

  一般社団法人 日本粘土学会

キーワード

• bentonite
• methylene blue adsorption test method
• the Clay Science Society of Japan (CSSJ) Reference Clay Sample JCSS-3102 Montmorillonite "Mikawa"

詳細情報

• CRID: 1390282679089406720
• NII論文ID: 110010050766
• NII書誌ID: AN00199972
• DOI: 10.11362/jcssjnendokagaku.54.2_65
• ISSN: 21863563
• ISSN: 04706455
• NDL書誌ID: 027320001
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I027320001
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • CiNii Articles
  • Crossref
• 抄録ライセンスフラグ: 使用不可