A novel recycling process of waste cement

Akihiro Yamasaki, Atsushi Iizuka, Yasuro Katsuyama, Minoru Fujii, Yukio Yanagisawa

研究成果: Conference contribution

抄録

A recycling process of waste cement by carbonation reaction with pressurized CO2 is discussed. It is found that the proposed process consists of two main reactions. The first is the extraction of calcium ions from waste cement particles in water slurry by pressurized carbon dioxide. The second is the precipitation of calcium carbonate (CaCO3) by reducing the pressure of CO2. The product, CaCO3 can be recycled as a raw material for cement production. The results show that the extraction process can be proceeded with relatively high rates in the initial 10 minutes of the reaction time, where the concentration of calcium ions exceeded thermodynamic solubility.

本文言語English
ホスト出版物のタイトル2004 AIChE Spring National Meeting, Conference Proceedings
ページ2440-2448
ページ数9
出版ステータスPublished - 2004 8 30
外部発表はい
イベント2004 AIChE Spring National Meeting, Conference Proceedings - New Orleans, LA, United States
継続期間: 2004 4 252004 4 29

出版物シリーズ

名前2004 AIChE Spring National Meeting, Conference Proceedings

Other

Other2004 AIChE Spring National Meeting, Conference Proceedings
国/地域United States
CityNew Orleans, LA
Period04/4/2504/4/29

ASJC Scopus subject areas

  • 工学(全般)
  • エネルギー(全般)

フィンガープリント

「A novel recycling process of waste cement」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル