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Investigations on the Adsorption Characteristics of $SO_2$ Gas on Fixed Bed Manganese Nodule Column  

Baek, Mi-Hwa (Department of Environmental Science and Engineering, Ewha Womans University)
Kim, Dong-Su (Department of Environmental Science and Engineering, Ewha Womans University)
Jung, Sun-Hee (Department of Environmental Science and Engineering, Ewha Womans University)
Park, Kyoung-Ho (Minerals and Materials Processing Division, Korea Institute of Geoscience and Mineral Resources)
Publication Information
Resources Recycling / v.15, no.4, 2006 , pp. 3-12 More about this Journal
Abstract
The feasibility for the employment of manganese nodule as an adsorbent for $SO_{2}$ gas has been investigated. The specific surface area of manganese nodule particle, which used in the experiments, was ca. $221.5m^{2}/g$ and the content of sulfur in manganese nodule was observed to significantly increase after $SO_{2}$ was adsorbed on it. The EPMA for the distilled water-washed and methanol-washed manganese nodule particle after $SO_{2}$ adsorption showed that its sulfur content was slightly decreased to 14.7% and 13.1% respectively, from 15.4% before washing. The XRD analysis of manganese nodule showed that todorokite and birnessite, which are manganese oxides, and quartz and anorthite were the major mineralogical components and weak $MnSO_{4}$ peaks were detected after $SO_{2}$ was adsorbed on manganese nodule. For an comparative investigation, limestone was also tested as an adsorbent for $SO_{2}$, however, no peaks for $CaSO_{4}$ were found by XRD analysis after the adsorption of $SO_{2}$. As the size of adsorbent increased, time for breakthrough was decreased and the adsorbed amount of $SO_{2}$ was also diminished. The $SO_{2}$ adsorption was hindered when its flow rate became high and the adsorption capacity of manganese nodule was observed to be superior to that of limestone. In addition, the mixture of manganese nodule and limestone did not show an increase in the adsorption of $SO_{2}$. Finally, as the temperature was raised, the adsorbed amount of adsorbate on manganese nodule was found to be decreased.
Keywords
manganese nodule; $SO_2$ gas; fixed bed column adsorption;
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Times Cited By KSCI : 1  (Citation Analysis)
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