Journal
JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT
Volume 18, Issue 3, Pages 407-412Publisher
SPRINGER
DOI: 10.1007/s10163-015-0461-0
Keywords
Carbon dioxide; Calcium carbonate; Gypsum; Industrial waste
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In this study, we propose a process making calcium carbonate and calcium sulfate and recovering absorbent using ammonia absorbent, carbon dioxide, and industrial waste. The main objective of this study is to confirm the possibility of carbon capture and utilization based on waste materials. We assumed desulfurization gypsum and construction waste (ready mixed concrete washing water, waste concrete, etc.) are CaSO4, Ca(OH)(2), respectively. And concentration of simulated carbon dioxide gas was 15 vol% similar to flue gas. Calcium carbonate was produced by combination reaction between ionic CO2 in absorbent and metal ion in the solid waste. Experiments were conducted at normal temperature and pressure. Furthermore, the generated products were characterized by X-ray diffraction, and scanning electron microscope.
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