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Sustainability 2017, 9(9), 1533; doi:10.3390/su9091533

Adsorption Kinetics and Breakthrough of Carbon Dioxide for the Chemical Modified Activated Carbon Filter Used in the Building

1
Department of Energy and Refrigerating Air-Conditioning Engineering, National Taipei University of Technology, Taipei 10608, Taiwan
2
Department of Molecular Science and Technology, National Taipei University of Technology, Taipei 10608, Taiwan
3
Airrex Co., Ltd., New Taipei City 23148, Taiwan
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 6 August 2017 / Revised: 24 August 2017 / Accepted: 25 August 2017 / Published: 29 August 2017
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Abstract

We studied different face velocity and carbon dioxide (CO2) initial concentration to examine the adsorption behavior of calcium oxide (CaO) impregnated activated carbon (AC) filter and also to discuss pseudo-first-order, pseudo-second-order and intra-particle diffusion three kinetic models. The experimental results show that saturation time and saturation capacity were decreased and increased with higher inlet concentration at the same face velocity, respectively. Simulation results show that pseudo-second-order correlation coefficient (r22 = 0.921) is higher than pseudo-first-order (r12 = 0.7815) and intra-particle diffusion (ri2 = 0.905). Therefore, the adsorption process of CO2 onto CaO impregnated AC filter media is appropriate for the pseudo-second-order kinetic model. View Full-Text
Keywords: activated carbon; adsorption dynamic model; carbon dioxide; air cleaner activated carbon; adsorption dynamic model; carbon dioxide; air cleaner
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Shiue, A.; Hu, S.-C.; Chang, S.-M.; Ko, T.-Y.; Hsieh, A.; Chan, A. Adsorption Kinetics and Breakthrough of Carbon Dioxide for the Chemical Modified Activated Carbon Filter Used in the Building. Sustainability 2017, 9, 1533.

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