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http://dx.doi.org/10.5762/KAIS.2014.15.7.4675

A Study on the comparison on Adsorption characteristics of Zeolite and DETOX for the removal of H2S  

Park, Dae-Seok (Dept. of Civil & Environmental Engineering, Incheon National University)
Lim, Ji-Young (Dept. of Civil & Environmental Engineering, Incheon National University)
Cho, Young-Gun (Dept. of Civil & Environmental Engineering, Incheon National University)
Song, Seung-Jun (Dept. of Civil & Environmental Engineering, Incheon National University)
Kim, Jin-Han (School of Urban and Environmental Engineering, Incheon National University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.15, no.7, 2014 , pp. 4675-4681 More about this Journal
Abstract
This study examined the $H_2S$ removal characteristics, such as breakthrough time, adsorption capacity, and adsorption rate of adsorbents between Zeolite 3A and DETOX in terms of the $H_2S$ inflow concentration and adsorption temperature. The adsorption capacity of Zeolite 3A increased with increasing mass flow rate of hydrogen sulfide($H_2S$) inflow, but the breakthrough time decreased. On the other hand, both the adsorption capacity and breakthrough time of DETOX decreased with increasing mass flow rate of $H_2S$ inflow. The adsorption capacity and breakthrough time of Zeolite 3A decreased with increasing adsorption temperature but those of DETOX increased. The adsorption capacity of DETOX was higher than that of Zeolite 3A by a factor of 2.5 - 16.4 because the collision frequency that overcomes the activation energy barrier increased with increasing adsorption temperature. For Zeolite 3A and DETOX, the adsorption rate of $H_2S$ increased with increasing mass flow rate of $H_2S$ inflow and adsorption temperature. The adsorption rate of $H_2S$ for Zeolite 3A was 4 times as much as that for DETOX. For the removal of $H_2S$ in biogas, DETOX had an advantage over Zeolite 3A because DETOX had a much longer breakthrough time and greater adsorption capacity in the temperature range of 308~318K than Zeolite 3A.
Keywords
zeolite; DETOX; hydrogen sulfide; adsorption characteristics; adsorption kinetic;
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