1. The reactivity of carbon dioxide capture with calcium-based waste solid by wet process.
- Author
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YI Yuan-rong and HAN Min-fang
- Subjects
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SOLID waste , *CARBON sequestration , *CARBON dioxide mitigation , *SLAG , *SEQUESTRATION (Chemistry) - Abstract
Steel slag, a kind of alkaline industrial waste from smelting, can be used as CO2 capture agent. Ground steel slag was applied in carbon capture. The effect of steel slag proportion in slurry on the efficiency of carbon capture, the change of slurry pH and the results of thermodynamic calculation were studied. XRD, TG-DTA, BET and FT-IR were used to characterize the lag before and after carbon capturing. The results of XRD and SEM show the content of CaCO3 and specific surface area increase after carbon capturing, which indicate that alkaline substance reacts with CO2. The results of TG-DTA and FT-IR analysis prove that the physicochemical properties and microscopic structure of the slag mixture change because of increasing of CaCO3 content. [ABSTRACT FROM AUTHOR]
- Published
- 2012