Knowledge Management System Of Institute of process engineering,CAS
| Experimental investigation of enhanced carbonation by solvent extraction for indirect CO2 mineral sequestration | |
| Alternative Title | Greenh. Gases |
| Bao, Weijun; Li, Huiquan; Zhang, Yi | |
| 2014-12-01 | |
| Source Publication | GREENHOUSE GASES-SCIENCE AND TECHNOLOGY
 |
| ISSN | 2152-3878 |
| Volume | 4Issue:6Pages:785-799 |
| Abstract | An indirect CO2 mineral sequestration involving two separated steps with acetic acid as a recycling medium provides a promising method for CO2 sequestration as well as the minimum CO2 emission for calcium carbonate production. In such an indirect route, the calcium carbonate production in the second gas-liquid reactive crystallization step has been challenged by low carbonation efficiency. This paper describes significant enhancement of the second step by coupling reactive crystallization and solvent extraction with the introduction of the organic solvent, tributyl phosphate (TBP), to the process. Based on the reaction mechanism of this enhanced carbonation process, many influencing factors including stirring speed, phase ratio, reaction time, reaction temperature, CO2 partial pressure, and the composition of the initial aqueous solution, were studied. Given the operating conditions of 60 min reaction time, 500 rpm stirring speed, organic-to-aqueous phase volume ratio of 1, 80 degrees C reaction temperature, 4.0 MPa CO2 partial pressure, and initial pH of 7, the obtained crystallization conversion in the second step was found to increase from 20% to above 50%, with the incorporation of TBP and the addition of magnesium acetate. (C) 2014 Society of Chemical Industry and John Wiley & Sons, Ltd; An indirect CO2 mineral sequestration involving two separated steps with acetic acid as a recycling medium provides a promising method for CO2 sequestration as well as the minimum CO2 emission for calcium carbonate production. In such an indirect route, the calcium carbonate production in the second gas-liquid reactive crystallization step has been challenged by low carbonation efficiency. This paper describes significant enhancement of the second step by coupling reactive crystallization and solvent extraction with the introduction of the organic solvent, tributyl phosphate (TBP), to the process. Based on the reaction mechanism of this enhanced carbonation process, many influencing factors including stirring speed, phase ratio, reaction time, reaction temperature, CO2 partial pressure, and the composition of the initial aqueous solution, were studied. Given the operating conditions of 60 min reaction time, 500 rpm stirring speed, organic-to-aqueous phase volume ratio of 1, 80 degrees C reaction temperature, 4.0 MPa CO2 partial pressure, and initial pH of 7, the obtained crystallization conversion in the second step was found to increase from 20% to above 50%, with the incorporation of TBP and the addition of magnesium acetate. (C) 2014 Society of Chemical Industry and John Wiley & Sons, Ltd |
| Keyword | Indirect Co2 Mineral Sequestration Tributyl Phosphate (Tbp) Acetic Acid Aragonite Coupled Reactive Crystallization And Solvent Extraction |
| Subtype | Article |
| WOS Headings | Science & Technology ; Technology ; Life Sciences & Biomedicine |
| DOI | 10.1002/ghg.1440 |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | PRECIPITATED CALCIUM-CARBONATE ; STEEL CONVERTER SLAG ; ACETIC-ACID ; HIGH-PRESSURES ; DISSOLUTION ; DIOXIDE ; ACETATE ; SOLUBILITY ; ARAGONITE ; KINETICS |
| WOS Research Area | Energy & Fuels ; Engineering ; Environmental Sciences & Ecology |
| WOS Subject | Energy & Fuels ; Engineering, Environmental ; Environmental Sciences |
| WOS ID | WOS:000345776600009 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/11701 |
| Collection | 研究所（批量导入） |
| Affiliation | Chinese Acad Sci, Inst Proc Engn, Beijing 100080, Peoples R China |
| Recommended Citation GB/T 7714 | Bao, Weijun,Li, Huiquan,Zhang, Yi. Experimental investigation of enhanced carbonation by solvent extraction for indirect CO2 mineral sequestration[J]. GREENHOUSE GASES-SCIENCE AND TECHNOLOGY,2014,4(6):785-799. |
| APA | Bao, Weijun,Li, Huiquan,&Zhang, Yi.(2014).Experimental investigation of enhanced carbonation by solvent extraction for indirect CO2 mineral sequestration.GREENHOUSE GASES-SCIENCE AND TECHNOLOGY,4(6),785-799. |
| MLA | Bao, Weijun,et al."Experimental investigation of enhanced carbonation by solvent extraction for indirect CO2 mineral sequestration".GREENHOUSE GASES-SCIENCE AND TECHNOLOGY 4.6(2014):785-799. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Experimental investi（2970KB） | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | Application Full Text | |
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