Semi-Dry Carbonation Process Using Fly Ash from Solid Refused Fuel Power Plant

Jung Hyun Kim and Woo Teck Kwon
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Jung Hyun Kim: Energy & Environmental Division, Korea Institute of Ceramic Engineering & Technology (KICET), 101 Soho-ro, Jinju-si, Gyeongsangnam-do 52581, Korea
Woo Teck Kwon: Energy & Environmental Division, Korea Institute of Ceramic Engineering & Technology (KICET), 101 Soho-ro, Jinju-si, Gyeongsangnam-do 52581, Korea

Sustainability, 2019, vol. 11, issue 3, 1-10

Abstract: The increasing CO 2 concentration in the Earth’s atmosphere, mainly caused by fossil fuel combustion, has led to concerns about global warming. Carbonation is a technique that can be used as a carbon capture and storage (CCS) technology for CO2 sequestration. In this study, the utilization of the fly ash from a solid refused fuel (SRF) power plant as a solid sorbent material for CO 2 capture via semi-dry carbonation reaction was evaluated as a simple process to reduce CO 2 . The fly ash was exposed to accelerated carbonation conditions at a relative humidity of 25, 50, 75, and 100%, to investigate the effects of humidity on the carbonation kinetics of the fly ash. The reaction conditions such as moisture, concentration of CO 2 , and reaction time can affect CO 2 capture performance of fly ash. Due to a short diffusion length of H 2 CO 3 in water, the semi-dry process exhibits faster carbonation reaction than the wet process. Especially, the semi-dry process does not require a wastewater treatment plant because it uses a small amount of water. This study may have important implications, illustrating the possibility of replacing the wet process with the semi-dry process.

Keywords: SRF; fly ash; carbon dioxide; carbonation; CO 2 capture (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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