Jang KN  Song YS  Hong JS  You YW  Hwang TS

Vol. 23,  No. 3, pp. 286-293, Sep.  2017
10.7464/ksct.2017.23.3.286

H2S Adsorbent Odor gas K2CO3 Biogas

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The goal of this paper was to improve the performance of the adsorbent to remove H2S. Pellet type adsorbents were prepared by using four kinds of materials (Fe2O3, Ca(OH)2, Activated carbon, Al(OH)2) for use as a basic carrier. As the results of H2S adsorption tests, Fe2O3 and Activated Carbon improved the adsorption performance of H2S by 1.5 ~ 2 times, and Ca(OH)2 and Al(OH)2 showed no effect on H2S adsorption performance. Four basic materials were as carriers, and 5 wt% of KI, KOH and K2CO3 were added on the carriers, respectively. As the results of H2S adsorption tests, adsorbent containing K2CO3 showed the best performance. As a result of H2S adsorption test with varying K2CO3 content from 5 to 30 wt%, it was confirmed that adsorption performance was increased up to 20 wt% of K2CO3 and adsorption performance decreased to 30 wt%. The H2S adsorption performance was modeled by using Thomas model with varying K2CO3 contents and the results were used for the adsorption tower design. It was shown that the experimental values and the simulated values were in good agreement with the contents range of K2CO3 up to 20 wt%. Based on these results, it is expected that not only the adsorption performance of H2S adsorbent is improved but also life time of the adsorbent is increased.