389129 The Morphology Modification of Limestone By Different Forms of Carbon Additives for CO2 Sequestration

Monday, November 17, 2014
Galleria Exhibit Hall (Hilton Atlanta)
Binglu Meng1, Hui Li2, Wen-bin Yang1, Lele Zhang1, Jiang-feng Li1, Youhai Yu3 and Yong Min3,4, (1)College of Materials and Mineral Resource, Xi'an University of Architecture & Technology, Xi'an, China, (2)Xi'an University of Architecture &Technology, Institute of Powder Engineering, Xi'an, China, (3)Xi’an Institute of Optics and Precision Mechanics, Xi'an, China, (4)Xi'an University of Architecture &Technology, Xi'an University of Architecture &Technology, Xi'an, China

The limestone was used to sequestrate the CO2 in cement industry had been widely reported. The efficiency was dramatically reduced after several cycles due to the “sintering” of limestone. Here we found that we can improve the CO2 sequestration capability of limestone by adding different carbon additives to modify the limestone morphology. We have compared the influence of different forms of carbon and found that we can improve the efficiency over 18% and 8% by adding carbon black and bamboo carbon respectively. However, it will decrease by adding layered graphite type materials such as, graphite and graphene. The experimental results were discussed and characterized by SEM, particle distribution, XRD, optical microscope, and its corresponding mechanism was proposed in the paper.

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See more of this Session: Poster Session: Environmental Division
See more of this Group/Topical: Environmental Division