Abstract
Simulating regeneration tests of Potassium-Based sorbents that supported by Suzhou River Channel Sediment were carried out in order to obtain parameters of regeneration reaction. Potassium-based sediment sorbents have a better morphology with the surface area of 156.73 m2·g−1, the pore volume of 357.5×10−3 cm3·g−1 and the distribution of pore diameters about 2–20 nm. As a comparison, those of hexagonal potassium-based sorbents are only 2.83 m2g−1, 7.45×10−3 cm3g−1 and 1.72–5.4 nm, respectively. TGA analysis shows that the optimum final temperature of regeneration is 200 and the optimum loading is about 40%, with the best heating rate of 10 °C·min−1. By the modified Coats-Redfern integral method, the activation energy of 40% KHCO3 sorbents is 102.43 kJ·mol−1. The results obtained can be used as basic data for designing and operating CO2 capture process.
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This work was presented at the 9th China-Korea Workshop on Clean Energy Technology held at Huangshan, China, July, 01–05, 2012.
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Wang, Lw., Diao, Yf., Wang, Ll. et al. Regeneration dynamics of potassium-based sediment sorbents for CO2 capture. Korean J. Chem. Eng. 30, 1631–1635 (2013). https://doi.org/10.1007/s11814-013-0090-z
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DOI: https://doi.org/10.1007/s11814-013-0090-z