globalchange  > 气候变化与战略
DOI: 10.1016/j.jclepro.2019.119875
论文题名:
Towards a clean environment: The potential application of eco-friendly magnesia-silicate cement in CO2 sequestration
作者: Abdel-Gawwad H.A.; Hassan H.S.; Vásquez-García S.R.; Israde-Alcántara I.; Ding Y.-C.; Martinez-Cinco M.A.; Abd El-Aleem S.; Khater H.M.; Tawfik T.A.; El-Kattan I.M.
刊名: Journal of Cleaner Production
ISSN: 9596526
出版年: 2020
卷: 252
语种: 英语
英文关键词: CO2-Capture ; Global warming phenomenon ; Magnesia-based cement ; Volcanic ashes
Scopus关键词: Adsorbents ; Cements ; Compressive strength ; Environmental protection ; Fabrication ; Global warming ; Gravimetric analysis ; Hardening ; Magnesia ; Silicates ; Thermogravimetric analysis ; Volcanoes ; Cementitious materials ; CO2 capture ; Global warming potential ; Industrial activities ; Instrumental techniques ; Magnesium hydroxide ; Naturally occurring ; Volcanic ash ; Carbon dioxide
英文摘要: The key point of this study is the fabrication of magnesia-based cement with promising mechanical properties and high efficiency of CO2-capture. The naturally occurring volcanic ashes (white & red ashes) and reactive magnesium oxide are the main materials used in the synthesis of eco-friendly CO2-capture materials. Volcanic ashes were individually mixed with reactive magnesium oxide at ash to magnesium oxide ratio of 25:75 wt %. The dry blends can react with water to yield hardened materials (at ambient temperature) with compressive strength depends on the type of volcanic ash. A considerable change in the features of the hardened samples was recorded when the fabricated materials exposed to 100% CO2 gas for 28-days. This change is mainly due to CO2-capture by magnesium hydroxide Mg(OH)2 within the fabricated materials, resulting in the formation of Nesquehonite minerals MgCO3.3H2O as proved by X-ray diffraction, thermo-gravimetric, and infra-red instrumental techniques. The thermo-gravimetric analysis demonstrates that, the fabricated sample containing low amorphous red ashes has higher CO2-capture capacity (∼260 kg/ton) compared to that having high amorphous white volcanic ashes (∼220 kg/ton) at 28-days of CO2-exposure. Accordingly, the fabricated magnesia-based cement is not only used as cementitious material with outstanding mechanical properties, but also used as a super CO2-absorbent precursor. This can strongly contribute in the mitigation of global warming potential caused by different industrial activities. © 2019 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158417
Appears in Collections:气候变化与战略

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作者单位: Raw Building Materials Research and Processing Technology Institute, Housing and Building National Research Center (HBRC), Cairo, Egypt; Posgrado de Ingeniería Química, Universidad Michoacana de San Nicolas de Hidalgo, Morelia, Michoacan 58000, Mexico; Geology Department, Faculty of Science, New Valley University, El- Kharga72511, Egypt; Instituto de Investigaciones en ciencias de latierra Edif. U-4, Cd. Universitaria, Morelia, Michoacán, Mexico; Institute of Mineral Resources Engineering, National Taipei University of Technology, Taipei, Taiwan; Chemistry Department, Faculty of Science, Fayoum University, Fayoum, Egypt; Construction and Building Department, Higher Institute of Engineering on 6thOctober, Giza, Egypt; Environmental Science and Industrial Development Department, Faculty of Postgraduate Studies for Advanced Sciences, Beni-Suef University, Beni-Suef, Egypt

Recommended Citation:
Abdel-Gawwad H.A.,Hassan H.S.,Vásquez-García S.R.,et al. Towards a clean environment: The potential application of eco-friendly magnesia-silicate cement in CO2 sequestration[J]. Journal of Cleaner Production,2020-01-01,252
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