The odor from sulfur hydrogen (H2S) is extensive and toxic even at low concentrations. Sulfur hydrogen could also damage the health of human being and corrode equipments. In addition, it can be oxidized to SO2 by oxygen and ozone, resulting in acidic rain and destroy our environment. Therefore, decreasing H2S concentration and its odor is in great demand in both environmental and economic aspects. Biological method, among many available ones, has great advantages to eliminate odor from H2S because it ne...