竹炭における硝酸イオン吸着能とその機構

• 伴野 雅之

  九州大学大学院工学府

• 久場 隆広

  九州大学大学院工学府

• 佐野 弘典

  九州旅客鉄道株式会社

• 河村 直哉

  九州大学大学院システム生命科学府

• 市川 瞬平

  九州大学大学院工学府

• 酒井 雄介

  九州大学大学院工学府

書誌事項

タイトル別名

• Capacity and Mechanism of Nitrate Anion Adsorption onto Bamboo Charcoal
• チクタン ニ オケル ショウサン イオン キュウチャクノウ ト ソノ キコウ
• Capacity and mechanism of nitrate anion adsorption onto bamboo charcoal. (In Japanese with English summary.)

抄録

Bamboo charcoal was examined to assess its nitrate ion adsorption capacity and mechanism in aqueous solutions. Three types of bamboo charcoal were prepared from Moso bamboo at different carbonization temperatures, namely, 400, 600 and 800°C (i.e., BC400, BC600, BC800). Although BC600 had the largest BET surface area and micropore volume (245.4m² · g^-1 and 0.162cm³ · g^-1, respectively), the batch adsorption experiment showed that BC800 had the highest nitrate ion adsorption capacity (3mg-N · g^-1 at about 80mg-N · l^-1). In addition, at the initial pH of the aqueous solutions of 2, the adsorption capacity was larger than that at about pH 6. Furthermore, the effects of acid and alkali treatments were examined. BC800_NaOH-HCl treated with acid following alkali treatment had a higher adsorption capacity than BC800_HCl-NaoH treated with alkali following acid treatment. This suggested that some hydroxide ions adsorbed onto BC800_NaOH-HCl were replaced with chlorine ions with the last acid treatment, although all of the anion exchange groups on BC800_HCl-NaOH adsorbed only hydroxide ions with the last alkali treatment. In other words, bamboo charcoal with partial substitution of chlorine ions for hydroxide ions can adsorb ions better. Therefore, it was concluded that the mechanism of nitrate ion adsorption onto bamboo charcoal is through ion exchange chemical adsorption.

収録刊行物

• 水環境学会誌

  水環境学会誌 32 (7), 369-374, 2009

  公益社団法人 日本水環境学会

キーワード

• bamboo charcoal
• nonactivated carbon
• anion adsorption
• nitrate nitrogen
• acid and alkali treatments

詳細情報

• CRID: 1390282680057079808
• NII論文ID: 10025186153
• NII書誌ID: AN10372439
• DOI: 10.2965/jswe.32.369
• COI: 1:CAS:528:DC%2BD1MXhtVelsrvF
• ISSN: 18813690
• ISSN: 09168958
• NDL書誌ID: 10332689
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10332689
• Web Site: https://www.jstage.jst.go.jp/article/jswe/32/7/32_7_369/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可