Isolation and Identification of Desulfovibrio spp. from Hammam Al-Alel and Study some of the Environmental Properties of the Water in This Region

The study involved natural sulfur springs and their tributaries on the right bank of Tigris river south Mosul city at Hammam Al- Alel region. Seasonal samples were taken through a year from four locations represent: hot, cold water springs, tributaries formed, in addition to Tigris river water. Desulfovibrio spp. were isolated from Hammam Al-Alel region, which were responsible of clear variability in water color and the sulfur deposits resulted from sulfate oxidation-reduction reactions. Bacteriological, physical, and chemical properties of this acidic sulfur springs were studied. The study has improved that concentrations average of sulfate ions were high (255 mg/l) led to oxygen decrease and drop in pH to (5.8) compared with Tigris river pH (8.1), the study also has showed that Mg+2, Ca+2, Na+1 and K+1 ions concentrations were increased especially during summer, this caused that the environment surrounded this region became toxic, then it is non-hygienic for utilization by man, animals and cultivation