Development of a new carbon dioxide sequestration scenario by the carbonation of waste cement

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

Research output: Contribution to journalConference articlepeer-review

Abstract

A new sequestration process of anthropogenic CO 2 using waste cement was proposed. The proposed process contains two main reactions. The first reaction is an extraction reaction of calcium ion (Ca 2+) from waste cement particles by pressurized CO 2. The second reaction is a precipitation reaction of CaCO 3. Ca 2+ extracted from waste cement was deposited as a CaCO 3 when the pressure was reduced to the low CO 2 pressure. CaCO 3 was directly disposed or recycled as a raw material of cement production. Energy consumption for the operation was 25.9 Mw/100-Mw power generation, and the sequestration cost was ∼ $83/1 ton carbon sequestration.

Original languageEnglish
JournalACS National Meeting Book of Abstracts
Volume227
Issue number1
Publication statusPublished - 2004 Jun 1
Externally publishedYes
Event227th ACS National Meeting Abstracts of Papers - Anaheim, CA., United States
Duration: 2004 Mar 282004 Apr 1

ASJC Scopus subject areas

  • Chemistry(all)

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