1.8.1.21	degradation	application of strain in a two-stage biotrickling filter for simultaneous treatment of hydrogen sulfide, methanethiol, dimethyl sulfide and dimethyl disulfide. The first biofilter is inoculated with Acidithiobacillus thiooxidans and the second one with Thiobacillus thioparus. For separate feeds of reduced sulfur compounds, the elimination capacity order is dimethyl disulfide > dimethyl sulfide > methanethiol	753024