In order to develop a method for the removal of hydrogen sulfide via a biological process, two different packing materials were tested to assess their capabilities as biofilter bed materials under variable conditions of two parameters: inlet gas concentration and inlet gas flow rate. We detected a maximal elimination capacity (critical loading rate) of 515.1 (410.5) g-H 2 S/m 3 ·hr, and 415.5 (80.0) g-H 2 S/m 3 ·hr, respectively, when polypropylene fibrils and volcanic stone were employed as supporting materials. The results of this study show that the application of polypropylene fibrils might be a favorable choice as a packing material in biofilter for the biological removal of hydrogen sulfide.
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